diff options
Diffstat (limited to 'arch')
67 files changed, 1519 insertions, 925 deletions
diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h index e39d487bf724..a3c7f271ad4c 100644 --- a/arch/arm64/include/asm/compat.h +++ b/arch/arm64/include/asm/compat.h @@ -215,7 +215,6 @@ typedef struct compat_siginfo { } compat_siginfo_t; #define COMPAT_OFF_T_MAX 0x7fffffff -#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL /* * A pointer passed in from user mode. This should not diff --git a/arch/mips/include/asm/compat-signal.h b/arch/mips/include/asm/compat-signal.h index e87cd243b0f4..c3b7a2550d1d 100644 --- a/arch/mips/include/asm/compat-signal.h +++ b/arch/mips/include/asm/compat-signal.h @@ -14,45 +14,16 @@ static inline int __copy_conv_sigset_to_user(compat_sigset_t __user *d, const sigset_t *s) { - int err; + BUILD_BUG_ON(sizeof(*d) != sizeof(*s)); + BUILD_BUG_ON(_NSIG_WORDS != 2); - BUG_ON(sizeof(*d) != sizeof(*s)); - BUG_ON(_NSIG_WORDS != 2); - - err = __put_user(s->sig[0], &d->sig[0]); - err |= __put_user(s->sig[0] >> 32, &d->sig[1]); - err |= __put_user(s->sig[1], &d->sig[2]); - err |= __put_user(s->sig[1] >> 32, &d->sig[3]); - - return err; + return put_compat_sigset(d, s, sizeof(*d)); } static inline int __copy_conv_sigset_from_user(sigset_t *d, const compat_sigset_t __user *s) { - int err; - union sigset_u { - sigset_t s; - compat_sigset_t c; - } *u = (union sigset_u *) d; - - BUG_ON(sizeof(*d) != sizeof(*s)); - BUG_ON(_NSIG_WORDS != 2); - -#ifdef CONFIG_CPU_BIG_ENDIAN - err = __get_user(u->c.sig[1], &s->sig[0]); - err |= __get_user(u->c.sig[0], &s->sig[1]); - err |= __get_user(u->c.sig[3], &s->sig[2]); - err |= __get_user(u->c.sig[2], &s->sig[3]); -#endif -#ifdef CONFIG_CPU_LITTLE_ENDIAN - err = __get_user(u->c.sig[0], &s->sig[0]); - err |= __get_user(u->c.sig[1], &s->sig[1]); - err |= __get_user(u->c.sig[2], &s->sig[2]); - err |= __get_user(u->c.sig[3], &s->sig[3]); -#endif - - return err; + return get_compat_sigset(d, s); } #endif /* __ASM_COMPAT_SIGNAL_H */ diff --git a/arch/mips/include/asm/compat.h b/arch/mips/include/asm/compat.h index 8e2b5b556488..49691331ada4 100644 --- a/arch/mips/include/asm/compat.h +++ b/arch/mips/include/asm/compat.h @@ -200,7 +200,6 @@ typedef struct compat_siginfo { } compat_siginfo_t; #define COMPAT_OFF_T_MAX 0x7fffffff -#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL /* * A pointer passed in from user mode. This should not diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 1fd3eb5b66c6..9792d8cf4f56 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -32,6 +32,7 @@ config PARISC select GENERIC_PCI_IOMAP select ARCH_HAVE_NMI_SAFE_CMPXCHG select GENERIC_SMP_IDLE_THREAD + select GENERIC_CPU_DEVICES select GENERIC_STRNCPY_FROM_USER select SYSCTL_ARCH_UNALIGN_ALLOW select SYSCTL_EXCEPTION_TRACE @@ -60,9 +61,6 @@ config PARISC config CPU_BIG_ENDIAN def_bool y -config CPU_BIG_ENDIAN - def_bool y - config MMU def_bool y @@ -288,6 +286,21 @@ config SMP If you don't know what to do here, say N. +config PARISC_CPU_TOPOLOGY + bool "Support cpu topology definition" + depends on SMP + default y + help + Support PARISC cpu topology definition. + +config SCHED_MC + bool "Multi-core scheduler support" + depends on PARISC_CPU_TOPOLOGY && PA8X00 + help + Multi-core scheduler support improves the CPU scheduler's decision + making when dealing with multi-core CPU chips at a cost of slightly + increased overhead in some places. If unsure say N here. + config IRQSTACKS bool "Use separate kernel stacks when processing interrupts" default y diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile index 01946ebaff72..e2364ff59180 100644 --- a/arch/parisc/Makefile +++ b/arch/parisc/Makefile @@ -22,7 +22,7 @@ KBUILD_IMAGE := vmlinuz KBUILD_DEFCONFIG := default_defconfig NM = sh $(srctree)/arch/parisc/nm -CHECKFLAGS += -D__hppa__=1 +CHECKFLAGS += -D__hppa__=1 -mbig-endian LIBGCC = $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) export LIBGCC diff --git a/arch/parisc/include/asm/compat.h b/arch/parisc/include/asm/compat.h index 07f48827afda..acf8aa07cbe0 100644 --- a/arch/parisc/include/asm/compat.h +++ b/arch/parisc/include/asm/compat.h @@ -195,7 +195,6 @@ typedef struct compat_siginfo { } compat_siginfo_t; #define COMPAT_OFF_T_MAX 0x7fffffff -#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL struct compat_ipc64_perm { compat_key_t key; diff --git a/arch/parisc/include/asm/pdc.h b/arch/parisc/include/asm/pdc.h index efee44a5e063..339e83ddb39e 100644 --- a/arch/parisc/include/asm/pdc.h +++ b/arch/parisc/include/asm/pdc.h @@ -18,261 +18,6 @@ extern unsigned long parisc_cell_loc; /* cell location of CPU (PAT) */ #define PDC_TYPE_SYSTEM_MAP 1 /* 32-bit, but supports PDC_SYSTEM_MAP */ #define PDC_TYPE_SNAKE 2 /* Doesn't support SYSTEM_MAP */ -struct pdc_chassis_info { /* for PDC_CHASSIS_INFO */ - unsigned long actcnt; /* actual number of bytes returned */ - unsigned long maxcnt; /* maximum number of bytes that could be returned */ -}; - -struct pdc_coproc_cfg { /* for PDC_COPROC_CFG */ - unsigned long ccr_functional; - unsigned long ccr_present; - unsigned long revision; - unsigned long model; -}; - -struct pdc_model { /* for PDC_MODEL */ - unsigned long hversion; - unsigned long sversion; - unsigned long hw_id; - unsigned long boot_id; - unsigned long sw_id; - unsigned long sw_cap; - unsigned long arch_rev; - unsigned long pot_key; - unsigned long curr_key; -}; - -struct pdc_cache_cf { /* for PDC_CACHE (I/D-caches) */ - unsigned long -#ifdef CONFIG_64BIT - cc_padW:32, -#endif - cc_alias: 4, /* alias boundaries for virtual addresses */ - cc_block: 4, /* to determine most efficient stride */ - cc_line : 3, /* maximum amount written back as a result of store (multiple of 16 bytes) */ - cc_shift: 2, /* how much to shift cc_block left */ - cc_wt : 1, /* 0 = WT-Dcache, 1 = WB-Dcache */ - cc_sh : 2, /* 0 = separate I/D-cache, else shared I/D-cache */ - cc_cst : 3, /* 0 = incoherent D-cache, 1=coherent D-cache */ - cc_pad1 : 10, /* reserved */ - cc_hv : 3; /* hversion dependent */ -}; - -struct pdc_tlb_cf { /* for PDC_CACHE (I/D-TLB's) */ - unsigned long tc_pad0:12, /* reserved */ -#ifdef CONFIG_64BIT - tc_padW:32, -#endif - tc_sh : 2, /* 0 = separate I/D-TLB, else shared I/D-TLB */ - tc_hv : 1, /* HV */ - tc_page : 1, /* 0 = 2K page-size-machine, 1 = 4k page size */ - tc_cst : 3, /* 0 = incoherent operations, else coherent operations */ - tc_aid : 5, /* ITLB: width of access ids of processor (encoded!) */ - tc_sr : 8; /* ITLB: width of space-registers (encoded) */ -}; - -struct pdc_cache_info { /* main-PDC_CACHE-structure (caches & TLB's) */ - /* I-cache */ - unsigned long ic_size; /* size in bytes */ - struct pdc_cache_cf ic_conf; /* configuration */ - unsigned long ic_base; /* base-addr */ - unsigned long ic_stride; - unsigned long ic_count; - unsigned long ic_loop; - /* D-cache */ - unsigned long dc_size; /* size in bytes */ - struct pdc_cache_cf dc_conf; /* configuration */ - unsigned long dc_base; /* base-addr */ - unsigned long dc_stride; - unsigned long dc_count; - unsigned long dc_loop; - /* Instruction-TLB */ - unsigned long it_size; /* number of entries in I-TLB */ - struct pdc_tlb_cf it_conf; /* I-TLB-configuration */ - unsigned long it_sp_base; - unsigned long it_sp_stride; - unsigned long it_sp_count; - unsigned long it_off_base; - unsigned long it_off_stride; - unsigned long it_off_count; - unsigned long it_loop; - /* data-TLB */ - unsigned long dt_size; /* number of entries in D-TLB */ - struct pdc_tlb_cf dt_conf; /* D-TLB-configuration */ - unsigned long dt_sp_base; - unsigned long dt_sp_stride; - unsigned long dt_sp_count; - unsigned long dt_off_base; - unsigned long dt_off_stride; - unsigned long dt_off_count; - unsigned long dt_loop; -}; - -#if 0 -/* If you start using the next struct, you'll have to adjust it to - * work with 64-bit firmware I think -PB - */ -struct pdc_iodc { /* PDC_IODC */ - unsigned char hversion_model; - unsigned char hversion; - unsigned char spa; - unsigned char type; - unsigned int sversion_rev:4; - unsigned int sversion_model:19; - unsigned int sversion_opt:8; - unsigned char rev; - unsigned char dep; - unsigned char features; - unsigned char pad1; - unsigned int checksum:16; - unsigned int length:16; - unsigned int pad[15]; -} __attribute__((aligned(8))) ; -#endif - -#ifndef CONFIG_PA20 -/* no BLTBs in pa2.0 processors */ -struct pdc_btlb_info_range { - __u8 res00; - __u8 num_i; - __u8 num_d; - __u8 num_comb; -}; - -struct pdc_btlb_info { /* PDC_BLOCK_TLB, return of PDC_BTLB_INFO */ - unsigned int min_size; /* minimum size of BTLB in pages */ - unsigned int max_size; /* maximum size of BTLB in pages */ - struct pdc_btlb_info_range fixed_range_info; - struct pdc_btlb_info_range variable_range_info; -}; - -#endif /* !CONFIG_PA20 */ - -struct pdc_mem_retinfo { /* PDC_MEM/PDC_MEM_MEMINFO (return info) */ - unsigned long pdt_size; - unsigned long pdt_entries; - unsigned long pdt_status; - unsigned long first_dbe_loc; - unsigned long good_mem; -}; - -struct pdc_mem_read_pdt { /* PDC_MEM/PDC_MEM_READ_PDT (return info) */ - unsigned long pdt_entries; -}; - -#ifdef CONFIG_64BIT -struct pdc_memory_table_raddr { /* PDC_MEM/PDC_MEM_TABLE (return info) */ - unsigned long entries_returned; - unsigned long entries_total; -}; - -struct pdc_memory_table { /* PDC_MEM/PDC_MEM_TABLE (arguments) */ - unsigned long paddr; - unsigned int pages; - unsigned int reserved; -}; -#endif /* CONFIG_64BIT */ - -struct pdc_system_map_mod_info { /* PDC_SYSTEM_MAP/FIND_MODULE */ - unsigned long mod_addr; - unsigned long mod_pgs; - unsigned long add_addrs; -}; - -struct pdc_system_map_addr_info { /* PDC_SYSTEM_MAP/FIND_ADDRESS */ - unsigned long mod_addr; - unsigned long mod_pgs; -}; - -struct pdc_initiator { /* PDC_INITIATOR */ - int host_id; - int factor; - int width; - int mode; -}; - -struct hardware_path { - char flags; /* see bit definitions below */ - char bc[6]; /* Bus Converter routing info to a specific */ - /* I/O adaptor (< 0 means none, > 63 resvd) */ - char mod; /* fixed field of specified module */ -}; - -/* - * Device path specifications used by PDC. - */ -struct pdc_module_path { - struct hardware_path path; - unsigned int layers[6]; /* device-specific info (ctlr #, unit # ...) */ -}; - -#ifndef CONFIG_PA20 -/* Only used on some pre-PA2.0 boxes */ -struct pdc_memory_map { /* PDC_MEMORY_MAP */ - unsigned long hpa; /* mod's register set address */ - unsigned long more_pgs; /* number of additional I/O pgs */ -}; -#endif - -struct pdc_tod { - unsigned long tod_sec; - unsigned long tod_usec; -}; - -/* architected results from PDC_PIM/transfer hpmc on a PA1.1 machine */ - -struct pdc_hpmc_pim_11 { /* PDC_PIM */ - __u32 gr[32]; - __u32 cr[32]; - __u32 sr[8]; - __u32 iasq_back; - __u32 iaoq_back; - __u32 check_type; - __u32 cpu_state; - __u32 rsvd1; - __u32 cache_check; - __u32 tlb_check; - __u32 bus_check; - __u32 assists_check; - __u32 rsvd2; - __u32 assist_state; - __u32 responder_addr; - __u32 requestor_addr; - __u32 path_info; - __u64 fr[32]; -}; - -/* - * architected results from PDC_PIM/transfer hpmc on a PA2.0 machine - * - * Note that PDC_PIM doesn't care whether or not wide mode was enabled - * so the results are different on PA1.1 vs. PA2.0 when in narrow mode. - * - * Note also that there are unarchitected results available, which - * are hversion dependent. Do a "ser pim 0 hpmc" after rebooting, since - * the firmware is probably the best way of printing hversion dependent - * data. - */ - -struct pdc_hpmc_pim_20 { /* PDC_PIM */ - __u64 gr[32]; - __u64 cr[32]; - __u64 sr[8]; - __u64 iasq_back; - __u64 iaoq_back; - __u32 check_type; - __u32 cpu_state; - __u32 cache_check; - __u32 tlb_check; - __u32 bus_check; - __u32 assists_check; - __u32 assist_state; - __u32 path_info; - __u64 responder_addr; - __u64 requestor_addr; - __u64 fr[32]; -}; - void pdc_console_init(void); /* in pdc_console.c */ void pdc_console_restart(void); diff --git a/arch/parisc/include/asm/topology.h b/arch/parisc/include/asm/topology.h new file mode 100644 index 000000000000..6f0750c74e47 --- /dev/null +++ b/arch/parisc/include/asm/topology.h @@ -0,0 +1,36 @@ +#ifndef _ASM_PARISC_TOPOLOGY_H +#define _ASM_PARISC_TOPOLOGY_H + +#ifdef CONFIG_PARISC_CPU_TOPOLOGY + +#include <linux/cpumask.h> + +struct cputopo_parisc { + int thread_id; + int core_id; + int socket_id; + cpumask_t thread_sibling; + cpumask_t core_sibling; +}; + +extern struct cputopo_parisc cpu_topology[NR_CPUS]; + +#define topology_physical_package_id(cpu) (cpu_topology[cpu].socket_id) +#define topology_core_id(cpu) (cpu_topology[cpu].core_id) +#define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_sibling) +#define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_sibling) + +void init_cpu_topology(void); +void store_cpu_topology(unsigned int cpuid); +const struct cpumask *cpu_coregroup_mask(int cpu); + +#else + +static inline void init_cpu_topology(void) { } +static inline void store_cpu_topology(unsigned int cpuid) { } + +#endif + +#include <asm-generic/topology.h> + +#endif /* _ASM_ARM_TOPOLOGY_H */ diff --git a/arch/parisc/include/uapi/asm/pdc.h b/arch/parisc/include/uapi/asm/pdc.h index 0ad117617f1a..593eeb573138 100644 --- a/arch/parisc/include/uapi/asm/pdc.h +++ b/arch/parisc/include/uapi/asm/pdc.h @@ -16,6 +16,7 @@ #define PDC_ERROR -3 /* Call could not complete without an error */ #define PDC_NE_MOD -5 /* Module not found */ #define PDC_NE_CELL_MOD -7 /* Cell module not found */ +#define PDC_NE_BOOTDEV -9 /* Cannot locate a console device or boot device */ #define PDC_INVALID_ARG -10 /* Called with an invalid argument */ #define PDC_BUS_POW_WARN -12 /* Call could not complete in allowed power budget */ #define PDC_NOT_NARROW -17 /* Narrow mode not supported */ @@ -340,9 +341,6 @@ #if !defined(__ASSEMBLY__) -#include <linux/types.h> - - /* flags of the device_path */ #define PF_AUTOBOOT 0x80 #define PF_AUTOSEARCH 0x40 @@ -418,9 +416,255 @@ struct zeropage { int pad430[116]; /* [0x600] processor dependent */ - __u32 pad600[1]; - __u32 proc_sti; /* pointer to STI ROM */ - __u32 pad608[126]; + unsigned int pad600[1]; + unsigned int proc_sti; /* pointer to STI ROM */ + unsigned int pad608[126]; +}; + +struct pdc_chassis_info { /* for PDC_CHASSIS_INFO */ + unsigned long actcnt; /* actual number of bytes returned */ + unsigned long maxcnt; /* maximum number of bytes that could be returned */ +}; + +struct pdc_coproc_cfg { /* for PDC_COPROC_CFG */ + unsigned long ccr_functional; + unsigned long ccr_present; + unsigned long revision; + unsigned long model; +}; + +struct pdc_model { /* for PDC_MODEL */ + unsigned long hversion; + unsigned long sversion; + unsigned long hw_id; + unsigned long boot_id; + unsigned long sw_id; + unsigned long sw_cap; + unsigned long arch_rev; + unsigned long pot_key; + unsigned long curr_key; +}; + +struct pdc_cache_cf { /* for PDC_CACHE (I/D-caches) */ + unsigned long +#ifdef __LP64__ + cc_padW:32, +#endif + cc_alias: 4, /* alias boundaries for virtual addresses */ + cc_block: 4, /* to determine most efficient stride */ + cc_line : 3, /* maximum amount written back as a result of store (multiple of 16 bytes) */ + cc_shift: 2, /* how much to shift cc_block left */ + cc_wt : 1, /* 0 = WT-Dcache, 1 = WB-Dcache */ + cc_sh : 2, /* 0 = separate I/D-cache, else shared I/D-cache */ + cc_cst : 3, /* 0 = incoherent D-cache, 1=coherent D-cache */ + cc_pad1 : 10, /* reserved */ + cc_hv : 3; /* hversion dependent */ +}; + +struct pdc_tlb_cf { /* for PDC_CACHE (I/D-TLB's) */ + unsigned long tc_pad0:12, /* reserved */ +#ifdef __LP64__ + tc_padW:32, +#endif + tc_sh : 2, /* 0 = separate I/D-TLB, else shared I/D-TLB */ + tc_hv : 1, /* HV */ + tc_page : 1, /* 0 = 2K page-size-machine, 1 = 4k page size */ + tc_cst : 3, /* 0 = incoherent operations, else coherent operations */ + tc_aid : 5, /* ITLB: width of access ids of processor (encoded!) */ + tc_sr : 8; /* ITLB: width of space-registers (encoded) */ +}; + +struct pdc_cache_info { /* main-PDC_CACHE-structure (caches & TLB's) */ + /* I-cache */ + unsigned long ic_size; /* size in bytes */ + struct pdc_cache_cf ic_conf; /* configuration */ + unsigned long ic_base; /* base-addr */ + unsigned long ic_stride; + unsigned long ic_count; + unsigned long ic_loop; + /* D-cache */ + unsigned long dc_size; /* size in bytes */ + struct pdc_cache_cf dc_conf; /* configuration */ + unsigned long dc_base; /* base-addr */ + unsigned long dc_stride; + unsigned long dc_count; + unsigned long dc_loop; + /* Instruction-TLB */ + unsigned long it_size; /* number of entries in I-TLB */ + struct pdc_tlb_cf it_conf; /* I-TLB-configuration */ + unsigned long it_sp_base; + unsigned long it_sp_stride; + unsigned long it_sp_count; + unsigned long it_off_base; + unsigned long it_off_stride; + unsigned long it_off_count; + unsigned long it_loop; + /* data-TLB */ + unsigned long dt_size; /* number of entries in D-TLB */ + struct pdc_tlb_cf dt_conf; /* D-TLB-configuration */ + unsigned long dt_sp_base; + unsigned long dt_sp_stride; + unsigned long dt_sp_count; + unsigned long dt_off_base; + unsigned long dt_off_stride; + unsigned long dt_off_count; + unsigned long dt_loop; +}; + +/* Might need adjustment to work with 64-bit firmware */ +struct pdc_iodc { /* PDC_IODC */ + unsigned char hversion_model; + unsigned char hversion; + unsigned char spa; + unsigned char type; + unsigned int sversion_rev:4; + unsigned int sversion_model:19; + unsigned int sversion_opt:8; + unsigned char rev; + unsigned char dep; + unsigned char features; + unsigned char pad1; + unsigned int checksum:16; + unsigned int length:16; + unsigned int pad[15]; +} __attribute__((aligned(8))) ; + +/* no BLTBs in pa2.0 processors */ +struct pdc_btlb_info_range { + unsigned char res00; + unsigned char num_i; + unsigned char num_d; + unsigned char num_comb; +}; + +struct pdc_btlb_info { /* PDC_BLOCK_TLB, return of PDC_BTLB_INFO */ + unsigned int min_size; /* minimum size of BTLB in pages */ + unsigned int max_size; /* maximum size of BTLB in pages */ + struct pdc_btlb_info_range fixed_range_info; + struct pdc_btlb_info_range variable_range_info; +}; + +struct pdc_mem_retinfo { /* PDC_MEM/PDC_MEM_MEMINFO (return info) */ + unsigned long pdt_size; + unsigned long pdt_entries; + unsigned long pdt_status; + unsigned long first_dbe_loc; + unsigned long good_mem; +}; + +struct pdc_mem_read_pdt { /* PDC_MEM/PDC_MEM_READ_PDT (return info) */ + unsigned long pdt_entries; +}; + +#ifdef __LP64__ +struct pdc_memory_table_raddr { /* PDC_MEM/PDC_MEM_TABLE (return info) */ + unsigned long entries_returned; + unsigned long entries_total; +}; + +struct pdc_memory_table { /* PDC_MEM/PDC_MEM_TABLE (arguments) */ + unsigned long paddr; + unsigned int pages; + unsigned int reserved; +}; +#endif /* __LP64__ */ + +struct pdc_system_map_mod_info { /* PDC_SYSTEM_MAP/FIND_MODULE */ + unsigned long mod_addr; + unsigned long mod_pgs; + unsigned long add_addrs; +}; + +struct pdc_system_map_addr_info { /* PDC_SYSTEM_MAP/FIND_ADDRESS */ + unsigned long mod_addr; + unsigned long mod_pgs; +}; + +struct pdc_initiator { /* PDC_INITIATOR */ + int host_id; + int factor; + int width; + int mode; +}; + +struct hardware_path { + char flags; /* see bit definitions below */ + char bc[6]; /* Bus Converter routing info to a specific */ + /* I/O adaptor (< 0 means none, > 63 resvd) */ + char mod; /* fixed field of specified module */ +}; + +/* + * Device path specifications used by PDC. + */ +struct pdc_module_path { + struct hardware_path path; + unsigned int layers[6]; /* device-specific info (ctlr #, unit # ...) */ +}; + +/* Only used on some pre-PA2.0 boxes */ +struct pdc_memory_map { /* PDC_MEMORY_MAP */ + unsigned long hpa; /* mod's register set address */ + unsigned long more_pgs; /* number of additional I/O pgs */ +}; + +struct pdc_tod { + unsigned long tod_sec; + unsigned long tod_usec; +}; + +/* architected results from PDC_PIM/transfer hpmc on a PA1.1 machine */ + +struct pdc_hpmc_pim_11 { /* PDC_PIM */ + unsigned int gr[32]; + unsigned int cr[32]; + unsigned int sr[8]; + unsigned int iasq_back; + unsigned int iaoq_back; + unsigned int check_type; + unsigned int cpu_state; + unsigned int rsvd1; + unsigned int cache_check; + unsigned int tlb_check; + unsigned int bus_check; + unsigned int assists_check; + unsigned int rsvd2; + unsigned int assist_state; + unsigned int responder_addr; + unsigned int requestor_addr; + unsigned int path_info; + unsigned long long fr[32]; +}; + +/* + * architected results from PDC_PIM/transfer hpmc on a PA2.0 machine + * + * Note that PDC_PIM doesn't care whether or not wide mode was enabled + * so the results are different on PA1.1 vs. PA2.0 when in narrow mode. + * + * Note also that there are unarchitected results available, which + * are hversion dependent. Do a "ser pim 0 hpmc" after rebooting, since + * the firmware is probably the best way of printing hversion dependent + * data. + */ + +struct pdc_hpmc_pim_20 { /* PDC_PIM */ + unsigned long long gr[32]; + unsigned long long cr[32]; + unsigned long long sr[8]; + unsigned long long iasq_back; + unsigned long long iaoq_back; + unsigned int check_type; + unsigned int cpu_state; + unsigned int cache_check; + unsigned int tlb_check; + unsigned int bus_check; + unsigned int assists_check; + unsigned int assist_state; + unsigned int path_info; + unsigned long long responder_addr; + unsigned long long requestor_addr; + unsigned long long fr[32]; }; #endif /* !defined(__ASSEMBLY__) */ diff --git a/arch/parisc/kernel/Makefile b/arch/parisc/kernel/Makefile index 649dc3eda448..eafd06ab59ef 100644 --- a/arch/parisc/kernel/Makefile +++ b/arch/parisc/kernel/Makefile @@ -9,8 +9,7 @@ obj-y := cache.o pacache.o setup.o pdt.o traps.o time.o irq.o \ pa7300lc.o syscall.o entry.o sys_parisc.o firmware.o \ ptrace.o hardware.o inventory.o drivers.o \ signal.o hpmc.o real2.o parisc_ksyms.o unaligned.o \ - process.o processor.o pdc_cons.o pdc_chassis.o unwind.o \ - topology.o + process.o processor.o pdc_cons.o pdc_chassis.o unwind.o ifdef CONFIG_FUNCTION_TRACER # Do not profile debug and lowlevel utilities @@ -30,5 +29,6 @@ obj-$(CONFIG_AUDIT) += audit.o obj64-$(CONFIG_AUDIT) += compat_audit.o # only supported for PCX-W/U in 64-bit mode at the moment obj-$(CONFIG_64BIT) += perf.o perf_asm.o $(obj64-y) +obj-$(CONFIG_PARISC_CPU_TOPOLOGY) += topology.o obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += ftrace.o diff --git a/arch/parisc/kernel/processor.c b/arch/parisc/kernel/processor.c index e120d63c1b28..45cc65902fce 100644 --- a/arch/parisc/kernel/processor.c +++ b/arch/parisc/kernel/processor.c @@ -184,6 +184,9 @@ static int __init processor_probe(struct parisc_device *dev) p->txn_addr = txn_addr; /* save CPU IRQ address */ p->cpu_num = cpu_info.cpu_num; p->cpu_loc = cpu_info.cpu_loc; + + store_cpu_topology(cpuid); + #ifdef CONFIG_SMP /* ** FIXME: review if any other initialization is clobbered @@ -325,6 +328,8 @@ int __init init_per_cpu(int cpunum) set_firmware_width(); ret = pdc_coproc_cfg(&coproc_cfg); + store_cpu_topology(cpunum); + if(ret >= 0 && coproc_cfg.ccr_functional) { mtctl(coproc_cfg.ccr_functional, 10); /* 10 == Coprocessor Control Reg */ @@ -388,6 +393,14 @@ show_cpuinfo (struct seq_file *m, void *v) boot_cpu_data.cpu_hz / 1000000, boot_cpu_data.cpu_hz % 1000000 ); +#ifdef CONFIG_PARISC_CPU_TOPOLOGY + seq_printf(m, "physical id\t: %d\n", + topology_physical_package_id(cpu)); + seq_printf(m, "siblings\t: %d\n", + cpumask_weight(topology_core_cpumask(cpu))); + seq_printf(m, "core id\t\t: %d\n", topology_core_id(cpu)); +#endif + seq_printf(m, "capabilities\t:"); if (boot_cpu_data.pdc.capabilities & PDC_MODEL_OS32) seq_puts(m, " os32"); diff --git a/arch/parisc/kernel/setup.c b/arch/parisc/kernel/setup.c index f7d0c3b33d70..0e9675f857a5 100644 --- a/arch/parisc/kernel/setup.c +++ b/arch/parisc/kernel/setup.c @@ -408,6 +408,8 @@ void __init start_parisc(void) cpunum = smp_processor_id(); + init_cpu_topology(); + set_firmware_width_unlocked(); ret = pdc_coproc_cfg_unlocked(&coproc_cfg); diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c index f2a4038e275b..342073f44d3f 100644 --- a/arch/parisc/kernel/signal.c +++ b/arch/parisc/kernel/signal.c @@ -93,7 +93,6 @@ sys_rt_sigreturn(struct pt_regs *regs, int in_syscall) unsigned long usp = (regs->gr[30] & ~(0x01UL)); unsigned long sigframe_size = PARISC_RT_SIGFRAME_SIZE; #ifdef CONFIG_64BIT - compat_sigset_t compat_set; struct compat_rt_sigframe __user * compat_frame; if (is_compat_task()) @@ -114,9 +113,8 @@ sys_rt_sigreturn(struct pt_regs *regs, int in_syscall) if (is_compat_task()) { DBG(2,"sys_rt_sigreturn: ELF32 process.\n"); - if (__copy_from_user(&compat_set, &compat_frame->uc.uc_sigmask, sizeof(compat_set))) + if (get_compat_sigset(&set, &compat_frame->uc.uc_sigmask)) goto give_sigsegv; - sigset_32to64(&set,&compat_set); } else #endif { @@ -238,7 +236,6 @@ setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs, int err = 0; #ifdef CONFIG_64BIT struct compat_rt_sigframe __user * compat_frame; - compat_sigset_t compat_set; #endif usp = (regs->gr[30] & ~(0x01UL)); @@ -261,8 +258,8 @@ setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs, DBG(1,"setup_rt_frame: frame->uc.uc_mcontext = 0x%p\n", &compat_frame->uc.uc_mcontext); err |= setup_sigcontext32(&compat_frame->uc.uc_mcontext, &compat_frame->regs, regs, in_syscall); - sigset_64to32(&compat_set,set); - err |= __copy_to_user(&compat_frame->uc.uc_sigmask, &compat_set, sizeof(compat_set)); + err |= put_compat_sigset(&compat_frame->uc.uc_sigmask, set, + sizeof(compat_sigset_t)); } else #endif { diff --git a/arch/parisc/kernel/signal32.c b/arch/parisc/kernel/signal32.c index 9e0cb6a577d6..41afa9cd1f55 100644 --- a/arch/parisc/kernel/signal32.c +++ b/arch/parisc/kernel/signal32.c @@ -46,19 +46,6 @@ #define DBG(LEVEL, ...) #endif -inline void -sigset_32to64(sigset_t *s64, compat_sigset_t *s32) -{ - s64->sig[0] = s32->sig[0] | ((unsigned long)s32->sig[1] << 32); -} - -inline void -sigset_64to32(compat_sigset_t *s32, sigset_t *s64) -{ - s32->sig[0] = s64->sig[0] & 0xffffffffUL; - s32->sig[1] = (s64->sig[0] >> 32) & 0xffffffffUL; -} - long restore_sigcontext32(struct compat_sigcontext __user *sc, struct compat_regfile __user * rf, struct pt_regs *regs) diff --git a/arch/parisc/kernel/signal32.h b/arch/parisc/kernel/signal32.h index af51d4ccee42..719e7417732c 100644 --- a/arch/parisc/kernel/signal32.h +++ b/arch/parisc/kernel/signal32.h @@ -79,8 +79,6 @@ struct compat_rt_sigframe { #define FUNCTIONCALLFRAME32 48 #define PARISC_RT_SIGFRAME_SIZE32 (((sizeof(struct compat_rt_sigframe) + FUNCTIONCALLFRAME32) + SIGFRAME32) & -SIGFRAME32) -void sigset_32to64(sigset_t *s64, compat_sigset_t *s32); -void sigset_64to32(compat_sigset_t *s32, sigset_t *s64); long restore_sigcontext32(struct compat_sigcontext __user *sc, struct compat_regfile __user *rf, struct pt_regs *regs); diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S index 41e60a9c7db2..e775f80ae28c 100644 --- a/arch/parisc/kernel/syscall.S +++ b/arch/parisc/kernel/syscall.S @@ -690,15 +690,15 @@ cas_action: /* ELF32 Process entry path */ lws_compare_and_swap_2: #ifdef CONFIG_64BIT - /* Clip the input registers */ + /* Clip the input registers. We don't need to clip %r23 as we + only use it for word operations */ depdi 0, 31, 32, %r26 depdi 0, 31, 32, %r25 depdi 0, 31, 32, %r24 - depdi 0, 31, 32, %r23 #endif /* Check the validity of the size pointer */ - subi,>>= 4, %r23, %r0 + subi,>>= 3, %r23, %r0 b,n lws_exit_nosys /* Jump to the functions which will load the old and new values into diff --git a/arch/parisc/kernel/topology.c b/arch/parisc/kernel/topology.c index f5159381fdd6..0a10e4ddc528 100644 --- a/arch/parisc/kernel/topology.c +++ b/arch/parisc/kernel/topology.c @@ -1,37 +1,142 @@ /* - * arch/parisc/kernel/topology.c - Populate sysfs with topology information + * arch/parisc/kernel/topology.c * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. + * Copyright (C) 2017 Helge Deller <deller@gmx.de> * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. + * based on arch/arm/kernel/topology.c * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. */ -#include <linux/init.h> -#include <linux/smp.h> -#include <linux/cpu.h> -#include <linux/cache.h> +#include <linux/percpu.h> +#include <linux/sched.h> +#include <linux/sched/topology.h> -static DEFINE_PER_CPU(struct cpu, cpu_devices); +#include <asm/topology.h> -static int __init topology_init(void) + /* + * cpu topology table + */ +struct cputopo_parisc cpu_topology[NR_CPUS] __read_mostly; +EXPORT_SYMBOL_GPL(cpu_topology); + +const struct cpumask *cpu_coregroup_mask(int cpu) { - int num; + return &cpu_topology[cpu].core_sibling; +} + +static void update_siblings_masks(unsigned int cpuid) +{ + struct cputopo_parisc *cpu_topo, *cpuid_topo = &cpu_topology[cpuid]; + int cpu; + + /* update core and thread sibling masks */ + for_each_possible_cpu(cpu) { + cpu_topo = &cpu_topology[cpu]; + + if (cpuid_topo->socket_id != cpu_topo->socket_id) + continue; + + cpumask_set_cpu(cpuid, &cpu_topo->core_sibling); + if (cpu != cpuid) + cpumask_set_cpu(cpu, &cpuid_topo->core_sibling); + + if (cpuid_topo->core_id != cpu_topo->core_id) + continue; + + cpumask_set_cpu(cpuid, &cpu_topo->thread_sibling); + if (cpu != cpuid) + cpumask_set_cpu(cpu, &cpuid_topo->thread_sibling); + } + smp_wmb(); +} + +static int dualcores_found __initdata; + +/* + * store_cpu_topology is called at boot when only one cpu is running + * and with the mutex cpu_hotplug.lock locked, when several cpus have booted, + * which prevents simultaneous write access to cpu_topology array + */ +void __init store_cpu_topology(unsigned int cpuid) +{ + struct cputopo_parisc *cpuid_topo = &cpu_topology[cpuid]; + struct cpuinfo_parisc *p; + int max_socket = -1; + unsigned long cpu; + + /* If the cpu topology has been already set, just return */ + if (cpuid_topo->core_id != -1) + return; - for_each_present_cpu(num) { - register_cpu(&per_cpu(cpu_devices, num), num); + /* create cpu topology mapping */ + cpuid_topo->thread_id = -1; + cpuid_topo->core_id = 0; + + p = &per_cpu(cpu_data, cpuid); + for_each_online_cpu(cpu) { + const struct cpuinfo_parisc *cpuinfo = &per_cpu(cpu_data, cpu); + + if (cpu == cpuid) /* ignore current cpu */ + continue; + + if (cpuinfo->cpu_loc == p->cpu_loc) { + cpuid_topo->core_id = cpu_topology[cpu].core_id; + if (p->cpu_loc) { + cpuid_topo->core_id++; + cpuid_topo->socket_id = cpu_topology[cpu].socket_id; + dualcores_found = 1; + continue; + } + } + + if (cpuid_topo->socket_id == -1) + max_socket = max(max_socket, cpu_topology[cpu].socket_id); } - return 0; + + if (cpuid_topo->socket_id == -1) + cpuid_topo->socket_id = max_socket + 1; + + update_siblings_masks(cpuid); + + pr_info("CPU%u: thread %d, cpu %d, socket %d\n", + cpuid, cpu_topology[cpuid].thread_id, + cpu_topology[cpuid].core_id, + cpu_topology[cpuid].socket_id); } -subsys_initcall(topology_init); +static struct sched_domain_topology_level parisc_mc_topology[] = { +#ifdef CONFIG_SCHED_MC + { cpu_coregroup_mask, cpu_core_flags, SD_INIT_NAME(MC) }, +#endif + + { cpu_cpu_mask, SD_INIT_NAME(DIE) }, + { NULL, }, +}; + +/* + * init_cpu_topology is called at boot when only one cpu is running + * which prevent simultaneous write access to cpu_topology array + */ +void __init init_cpu_topology(void) +{ + unsigned int cpu; + + /* init core mask and capacity */ + for_each_possible_cpu(cpu) { + struct cputopo_parisc *cpu_topo = &(cpu_topology[cpu]); + + cpu_topo->thread_id = -1; + cpu_topo->core_id = -1; + cpu_topo->socket_id = -1; + cpumask_clear(&cpu_topo->core_sibling); + cpumask_clear(&cpu_topo->thread_sibling); + } + smp_wmb(); + + /* Set scheduler topology descriptor */ + if (dualcores_found) + set_sched_topology(parisc_mc_topology); +} diff --git a/arch/powerpc/include/asm/compat.h b/arch/powerpc/include/asm/compat.h index a035b1e5dfa7..8a2aecfe9b02 100644 --- a/arch/powerpc/include/asm/compat.h +++ b/arch/powerpc/include/asm/compat.h @@ -185,7 +185,6 @@ typedef struct compat_siginfo { } compat_siginfo_t; #define COMPAT_OFF_T_MAX 0x7fffffff -#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL /* * A pointer passed in from user mode. This should not diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c index 16d16583cf11..9ffd73296f64 100644 --- a/arch/powerpc/kernel/signal_32.c +++ b/arch/powerpc/kernel/signal_32.c @@ -94,40 +94,13 @@ */ static inline int put_sigset_t(compat_sigset_t __user *uset, sigset_t *set) { - compat_sigset_t cset; - - switch (_NSIG_WORDS) { - case 4: cset.sig[6] = set->sig[3] & 0xffffffffull; - cset.sig[7] = set->sig[3] >> 32; - case 3: cset.sig[4] = set->sig[2] & 0xffffffffull; - cset.sig[5] = set->sig[2] >> 32; - case 2: cset.sig[2] = set->sig[1] & 0xffffffffull; - cset.sig[3] = set->sig[1] >> 32; - case 1: cset.sig[0] = set->sig[0] & 0xffffffffull; - cset.sig[1] = set->sig[0] >> 32; - } - return copy_to_user(uset, &cset, sizeof(*uset)); + return put_compat_sigset(uset, set, sizeof(*uset)); } static inline int get_sigset_t(sigset_t *set, const compat_sigset_t __user *uset) { - compat_sigset_t s32; - - if (copy_from_user(&s32, uset, sizeof(*uset))) - return -EFAULT; - - /* - * Swap the 2 words of the 64-bit sigset_t (they are stored - * in the "wrong" endian in 32-bit user storage). - */ - switch (_NSIG_WORDS) { - case 4: set->sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32); - case 3: set->sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32); - case 2: set->sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32); - case 1: set->sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32); - } - return 0; + return get_compat_sigset(set, uset); } #define to_user_ptr(p) ptr_to_compat(p) diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 863a62a6de3c..829c67986db7 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -148,6 +148,7 @@ config S390 select HAVE_FUNCTION_GRAPH_TRACER select HAVE_FUNCTION_TRACER select HAVE_FUTEX_CMPXCHG if FUTEX + select HAVE_GCC_PLUGINS select HAVE_KERNEL_BZIP2 select HAVE_KERNEL_GZIP select HAVE_KERNEL_LZ4 @@ -158,6 +159,8 @@ config S390 select HAVE_KRETPROBES select HAVE_KVM select HAVE_LIVEPATCH + select HAVE_PERF_REGS + select HAVE_PERF_USER_STACK_DUMP select HAVE_MEMBLOCK select HAVE_MEMBLOCK_NODE_MAP select HAVE_MEMBLOCK_PHYS_MAP @@ -538,22 +541,6 @@ config ARCH_RANDOM If unsure, say Y. -config ALTERNATIVES - def_bool y - prompt "Patch optimized instructions for running CPU type" - help - When enabled the kernel code is compiled with additional - alternative instructions blocks optimized for newer CPU types. - These alternative instructions blocks are patched at kernel boot - time when running CPU supports them. This mechanism is used to - optimize some critical code paths (i.e. spinlocks) for newer CPUs - even if kernel is build to support older machine generations. - - This mechanism could be disabled by appending "noaltinstr" - option to the kernel command line. - - If unsure, say Y. - endmenu menu "Memory setup" diff --git a/arch/s390/configs/default_defconfig b/arch/s390/configs/default_defconfig index 84eccc88c065..5af8458951cf 100644 --- a/arch/s390/configs/default_defconfig +++ b/arch/s390/configs/default_defconfig @@ -629,6 +629,7 @@ CONFIG_STACK_TRACER=y CONFIG_BLK_DEV_IO_TRACE=y CONFIG_FUNCTION_PROFILER=y CONFIG_HIST_TRIGGERS=y +CONFIG_DMA_API_DEBUG=y CONFIG_LKDTM=m CONFIG_TEST_LIST_SORT=y CONFIG_TEST_SORT=y @@ -637,14 +638,12 @@ CONFIG_RBTREE_TEST=y CONFIG_INTERVAL_TREE_TEST=m CONFIG_PERCPU_TEST=m CONFIG_ATOMIC64_SELFTEST=y -CONFIG_DMA_API_DEBUG=y CONFIG_TEST_BPF=m CONFIG_BUG_ON_DATA_CORRUPTION=y CONFIG_S390_PTDUMP=y CONFIG_ENCRYPTED_KEYS=m CONFIG_SECURITY=y CONFIG_SECURITY_NETWORK=y -CONFIG_HARDENED_USERCOPY=y CONFIG_FORTIFY_SOURCE=y CONFIG_SECURITY_SELINUX=y CONFIG_SECURITY_SELINUX_BOOTPARAM=y @@ -660,13 +659,11 @@ CONFIG_CRYPTO_PCRYPT=m CONFIG_CRYPTO_CRYPTD=m CONFIG_CRYPTO_MCRYPTD=m CONFIG_CRYPTO_TEST=m -CONFIG_CRYPTO_CCM=m CONFIG_CRYPTO_GCM=m CONFIG_CRYPTO_CHACHA20POLY1305=m CONFIG_CRYPTO_LRW=m CONFIG_CRYPTO_PCBC=m CONFIG_CRYPTO_KEYWRAP=m -CONFIG_CRYPTO_CMAC=m CONFIG_CRYPTO_XCBC=m CONFIG_CRYPTO_VMAC=m CONFIG_CRYPTO_CRC32=m diff --git a/arch/s390/configs/gcov_defconfig b/arch/s390/configs/gcov_defconfig index f7202358e6d7..d52eafe57ae8 100644 --- a/arch/s390/configs/gcov_defconfig +++ b/arch/s390/configs/gcov_defconfig @@ -587,7 +587,6 @@ CONFIG_BIG_KEYS=y CONFIG_ENCRYPTED_KEYS=m CONFIG_SECURITY=y CONFIG_SECURITY_NETWORK=y -CONFIG_HARDENED_USERCOPY=y CONFIG_SECURITY_SELINUX=y CONFIG_SECURITY_SELINUX_BOOTPARAM=y CONFIG_SECURITY_SELINUX_BOOTPARAM_VALUE=0 @@ -605,13 +604,10 @@ CONFIG_CRYPTO_PCRYPT=m CONFIG_CRYPTO_CRYPTD=m CONFIG_CRYPTO_MCRYPTD=m CONFIG_CRYPTO_TEST=m -CONFIG_CRYPTO_CCM=m -CONFIG_CRYPTO_GCM=m CONFIG_CRYPTO_CHACHA20POLY1305=m CONFIG_CRYPTO_LRW=m CONFIG_CRYPTO_PCBC=m CONFIG_CRYPTO_KEYWRAP=m -CONFIG_CRYPTO_CMAC=m CONFIG_CRYPTO_XCBC=m CONFIG_CRYPTO_VMAC=m CONFIG_CRYPTO_CRC32=m diff --git a/arch/s390/configs/performance_defconfig b/arch/s390/configs/performance_defconfig index 03100fe74ea8..20ed149e1137 100644 --- a/arch/s390/configs/performance_defconfig +++ b/arch/s390/configs/performance_defconfig @@ -585,7 +585,6 @@ CONFIG_BIG_KEYS=y CONFIG_ENCRYPTED_KEYS=m CONFIG_SECURITY=y CONFIG_SECURITY_NETWORK=y -CONFIG_HARDENED_USERCOPY=y CONFIG_SECURITY_SELINUX=y CONFIG_SECURITY_SELINUX_BOOTPARAM=y CONFIG_SECURITY_SELINUX_BOOTPARAM_VALUE=0 @@ -603,13 +602,10 @@ CONFIG_CRYPTO_PCRYPT=m CONFIG_CRYPTO_CRYPTD=m CONFIG_CRYPTO_MCRYPTD=m CONFIG_CRYPTO_TEST=m -CONFIG_CRYPTO_CCM=m -CONFIG_CRYPTO_GCM=m CONFIG_CRYPTO_CHACHA20POLY1305=m CONFIG_CRYPTO_LRW=m CONFIG_CRYPTO_PCBC=m CONFIG_CRYPTO_KEYWRAP=m -CONFIG_CRYPTO_CMAC=m CONFIG_CRYPTO_XCBC=m CONFIG_CRYPTO_VMAC=m CONFIG_CRYPTO_CRC32=m diff --git a/arch/s390/include/asm/alternative.h b/arch/s390/include/asm/alternative.h index 6c268f6a51d3..a72002056b54 100644 --- a/arch/s390/include/asm/alternative.h +++ b/arch/s390/include/asm/alternative.h @@ -15,14 +15,9 @@ struct alt_instr { u8 replacementlen; /* length of new instruction */ } __packed; -#ifdef CONFIG_ALTERNATIVES -extern void apply_alternative_instructions(void); -extern void apply_alternatives(struct alt_instr *start, struct alt_instr *end); -#else -static inline void apply_alternative_instructions(void) {}; -static inline void apply_alternatives(struct alt_instr *start, - struct alt_instr *end) {}; -#endif +void apply_alternative_instructions(void); +void apply_alternatives(struct alt_instr *start, struct alt_instr *end); + /* * |661: |662: |6620 |663: * +-----------+---------------------+ @@ -109,7 +104,6 @@ static inline void apply_alternatives(struct alt_instr *start, b_altinstr(num)":\n\t" altinstr "\n" e_altinstr(num) ":\n" \ INSTR_LEN_SANITY_CHECK(altinstr_len(num)) -#ifdef CONFIG_ALTERNATIVES /* alternative assembly primitive: */ #define ALTERNATIVE(oldinstr, altinstr, facility) \ ".pushsection .altinstr_replacement, \"ax\"\n" \ @@ -130,14 +124,6 @@ static inline void apply_alternatives(struct alt_instr *start, ALTINSTR_ENTRY(facility1, 1) \ ALTINSTR_ENTRY(facility2, 2) \ ".popsection\n" -#else -/* Alternative instructions are disabled, let's put just oldinstr in */ -#define ALTERNATIVE(oldinstr, altinstr, facility) \ - oldinstr "\n" - -#define ALTERNATIVE_2(oldinstr, altinstr1, facility1, altinstr2, facility2) \ - oldinstr "\n" -#endif /* * Alternative instructions for different CPU types or capabilities. diff --git a/arch/s390/include/asm/compat.h b/arch/s390/include/asm/compat.h index 1b60eb3676d5..5e6a63641a5f 100644 --- a/arch/s390/include/asm/compat.h +++ b/arch/s390/include/asm/compat.h @@ -263,7 +263,6 @@ typedef struct compat_siginfo { #define si_overrun _sifields._timer._overrun #define COMPAT_OFF_T_MAX 0x7fffffff -#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL /* * A pointer passed in from user mode. This should not diff --git a/arch/s390/include/asm/cpu_mf.h b/arch/s390/include/asm/cpu_mf.h index 05480e4cc5ca..792cda339af1 100644 --- a/arch/s390/include/asm/cpu_mf.h +++ b/arch/s390/include/asm/cpu_mf.h @@ -144,6 +144,12 @@ struct hws_trailer_entry { unsigned long long progusage2; /* */ } __packed; +/* Load program parameter */ +static inline void lpp(void *pp) +{ + asm volatile(".insn s,0xb2800000,0(%0)\n":: "a" (pp) : "memory"); +} + /* Query counter information */ static inline int qctri(struct cpumf_ctr_info *info) { @@ -167,7 +173,7 @@ static inline int lcctl(u64 ctl) " .insn s,0xb2840000,%1\n" " ipm %0\n" " srl %0,28\n" - : "=d" (cc) : "m" (ctl) : "cc"); + : "=d" (cc) : "Q" (ctl) : "cc"); return cc; } diff --git a/arch/s390/include/asm/futex.h b/arch/s390/include/asm/futex.h index 9b5a3469fed9..5e97a4353147 100644 --- a/arch/s390/include/asm/futex.h +++ b/arch/s390/include/asm/futex.h @@ -26,9 +26,9 @@ static inline int arch_futex_atomic_op_inuser(int op, int oparg, int *oval, u32 __user *uaddr) { int oldval = 0, newval, ret; + mm_segment_t old_fs; - load_kernel_asce(); - + old_fs = enable_sacf_uaccess(); pagefault_disable(); switch (op) { case FUTEX_OP_SET: @@ -55,6 +55,7 @@ static inline int arch_futex_atomic_op_inuser(int op, int oparg, int *oval, ret = -ENOSYS; } pagefault_enable(); + disable_sacf_uaccess(old_fs); if (!ret) *oval = oldval; @@ -65,9 +66,10 @@ static inline int arch_futex_atomic_op_inuser(int op, int oparg, int *oval, static inline int futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, u32 oldval, u32 newval) { + mm_segment_t old_fs; int ret; - load_kernel_asce(); + old_fs = enable_sacf_uaccess(); asm volatile( " sacf 256\n" "0: cs %1,%4,0(%5)\n" @@ -77,6 +79,7 @@ static inline int futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, : "=d" (ret), "+d" (oldval), "=m" (*uaddr) : "0" (-EFAULT), "d" (newval), "a" (uaddr), "m" (*uaddr) : "cc", "memory"); + disable_sacf_uaccess(old_fs); *uval = oldval; return ret; } diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h index 9eb36a1592c7..ec6592e8ba36 100644 --- a/arch/s390/include/asm/lowcore.h +++ b/arch/s390/include/asm/lowcore.h @@ -115,33 +115,28 @@ struct lowcore { /* Address space pointer. */ __u64 kernel_asce; /* 0x0378 */ __u64 user_asce; /* 0x0380 */ + __u64 vdso_asce; /* 0x0388 */ /* * The lpp and current_pid fields form a * 64-bit value that is set as program * parameter with the LPP instruction. */ - __u32 lpp; /* 0x0388 */ - __u32 current_pid; /* 0x038c */ + __u32 lpp; /* 0x0390 */ + __u32 current_pid; /* 0x0394 */ /* SMP info area */ - __u32 cpu_nr; /* 0x0390 */ - __u32 softirq_pending; /* 0x0394 */ - __u64 percpu_offset; /* 0x0398 */ - __u64 vdso_per_cpu_data; /* 0x03a0 */ - __u64 machine_flags; /* 0x03a8 */ - __u32 preempt_count; /* 0x03b0 */ - __u8 pad_0x03b4[0x03b8-0x03b4]; /* 0x03b4 */ - __u64 gmap; /* 0x03b8 */ - __u32 spinlock_lockval; /* 0x03c0 */ - __u32 spinlock_index; /* 0x03c4 */ - __u32 fpu_flags; /* 0x03c8 */ - __u8 pad_0x03cc[0x0400-0x03cc]; /* 0x03cc */ - - /* Per cpu primary space access list */ - __u32 paste[16]; /* 0x0400 */ - - __u8 pad_0x04c0[0x0e00-0x0440]; /* 0x0440 */ + __u32 cpu_nr; /* 0x0398 */ + __u32 softirq_pending; /* 0x039c */ + __u32 preempt_count; /* 0x03a0 */ + __u32 spinlock_lockval; /* 0x03a4 */ + __u32 spinlock_index; /* 0x03a8 */ + __u32 fpu_flags; /* 0x03ac */ + __u64 percpu_offset; /* 0x03b0 */ + __u64 vdso_per_cpu_data; /* 0x03b8 */ + __u64 machine_flags; /* 0x03c0 */ + __u64 gmap; /* 0x03c8 */ + __u8 pad_0x03d0[0x0e00-0x03d0]; /* 0x03d0 */ /* * 0xe00 contains the address of the IPL Parameter Information @@ -193,14 +188,14 @@ extern struct lowcore *lowcore_ptr[]; static inline void set_prefix(__u32 address) { - asm volatile("spx %0" : : "m" (address) : "memory"); + asm volatile("spx %0" : : "Q" (address) : "memory"); } static inline __u32 store_prefix(void) { __u32 address; - asm volatile("stpx %0" : "=m" (address)); + asm volatile("stpx %0" : "=Q" (address)); return address; } diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h index cf4c1cb17dcd..f4a07f788f78 100644 --- a/arch/s390/include/asm/mmu_context.h +++ b/arch/s390/include/asm/mmu_context.h @@ -73,41 +73,38 @@ static inline int init_new_context(struct task_struct *tsk, static inline void set_user_asce(struct mm_struct *mm) { S390_lowcore.user_asce = mm->context.asce; - if (current->thread.mm_segment.ar4) - __ctl_load(S390_lowcore.user_asce, 7, 7); - set_cpu_flag(CIF_ASCE_PRIMARY); + __ctl_load(S390_lowcore.user_asce, 1, 1); + clear_cpu_flag(CIF_ASCE_PRIMARY); } static inline void clear_user_asce(void) { S390_lowcore.user_asce = S390_lowcore.kernel_asce; - - __ctl_load(S390_lowcore.user_asce, 1, 1); - __ctl_load(S390_lowcore.user_asce, 7, 7); -} - -static inline void load_kernel_asce(void) -{ - unsigned long asce; - - __ctl_store(asce, 1, 1); - if (asce != S390_lowcore.kernel_asce) - __ctl_load(S390_lowcore.kernel_asce, 1, 1); + __ctl_load(S390_lowcore.kernel_asce, 1, 1); set_cpu_flag(CIF_ASCE_PRIMARY); } +mm_segment_t enable_sacf_uaccess(void); +void disable_sacf_uaccess(mm_segment_t old_fs); + static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, struct task_struct *tsk) { int cpu = smp_processor_id(); - S390_lowcore.user_asce = next->context.asce; if (prev == next) return; + S390_lowcore.user_asce = next->context.asce; cpumask_set_cpu(cpu, &next->context.cpu_attach_mask); - /* Clear old ASCE by loading the kernel ASCE. */ - __ctl_load(S390_lowcore.kernel_asce, 1, 1); - __ctl_load(S390_lowcore.kernel_asce, 7, 7); + /* Clear previous user-ASCE from CR1 and CR7 */ + if (!test_cpu_flag(CIF_ASCE_PRIMARY)) { + __ctl_load(S390_lowcore.kernel_asce, 1, 1); + set_cpu_flag(CIF_ASCE_PRIMARY); + } + if (test_cpu_flag(CIF_ASCE_SECONDARY)) { + __ctl_load(S390_lowcore.vdso_asce, 7, 7); + clear_cpu_flag(CIF_ASCE_SECONDARY); + } cpumask_clear_cpu(cpu, &prev->context.cpu_attach_mask); } @@ -117,7 +114,6 @@ static inline void finish_arch_post_lock_switch(void) struct task_struct *tsk = current; struct mm_struct *mm = tsk->mm; - load_kernel_asce(); if (mm) { preempt_disable(); while (atomic_read(&mm->context.flush_count)) diff --git a/arch/s390/include/asm/perf_event.h b/arch/s390/include/asm/perf_event.h index 79aa6421fedb..d6c9d1e0dc2d 100644 --- a/arch/s390/include/asm/perf_event.h +++ b/arch/s390/include/asm/perf_event.h @@ -64,27 +64,10 @@ struct perf_sf_sde_regs { #define REG_OVERFLOW 1 #define OVERFLOW_REG(hwc) ((hwc)->extra_reg.config) #define SFB_ALLOC_REG(hwc) ((hwc)->extra_reg.alloc) -#define RAWSAMPLE_REG(hwc) ((hwc)->config) #define TEAR_REG(hwc) ((hwc)->last_tag) #define SAMPL_RATE(hwc) ((hwc)->event_base) #define SAMPL_FLAGS(hwc) ((hwc)->config_base) #define SAMPL_DIAG_MODE(hwc) (SAMPL_FLAGS(hwc) & PERF_CPUM_SF_DIAG_MODE) #define SDB_FULL_BLOCKS(hwc) (SAMPL_FLAGS(hwc) & PERF_CPUM_SF_FULL_BLOCKS) -/* Structure for sampling data entries to be passed as perf raw sample data - * to user space. Note that raw sample data must be aligned and, thus, might - * be padded with zeros. - */ -struct sf_raw_sample { -#define SF_RAW_SAMPLE_BASIC PERF_CPUM_SF_BASIC_MODE -#define SF_RAW_SAMPLE_DIAG PERF_CPUM_SF_DIAG_MODE - u64 format; - u32 size; /* Size of sf_raw_sample */ - u16 bsdes; /* Basic-sampling data entry size */ - u16 dsdes; /* Diagnostic-sampling data entry size */ - struct hws_basic_entry basic; /* Basic-sampling data entry */ - struct hws_diag_entry diag; /* Diagnostic-sampling data entry */ - u8 padding[]; /* Padding to next multiple of 8 */ -} __packed; - #endif /* _ASM_S390_PERF_EVENT_H */ diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h index f25bfe888933..bfbfad482289 100644 --- a/arch/s390/include/asm/processor.h +++ b/arch/s390/include/asm/processor.h @@ -109,9 +109,7 @@ extern void execve_tail(void); #define HAVE_ARCH_PICK_MMAP_LAYOUT -typedef struct { - __u32 ar4; -} mm_segment_t; +typedef unsigned int mm_segment_t; /* * Thread structure @@ -247,7 +245,7 @@ static inline unsigned short stap(void) { unsigned short cpu_address; - asm volatile("stap %0" : "=m" (cpu_address)); + asm volatile("stap %0" : "=Q" (cpu_address)); return cpu_address; } diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h index 2f84e77f1f1b..a3788dafc0e1 100644 --- a/arch/s390/include/asm/ptrace.h +++ b/arch/s390/include/asm/ptrace.h @@ -13,10 +13,12 @@ #define PIF_SYSCALL 0 /* inside a system call */ #define PIF_PER_TRAP 1 /* deliver sigtrap on return to user */ #define PIF_SYSCALL_RESTART 2 /* restart the current system call */ +#define PIF_GUEST_FAULT 3 /* indicates program check in sie64a */ #define _PIF_SYSCALL _BITUL(PIF_SYSCALL) #define _PIF_PER_TRAP _BITUL(PIF_PER_TRAP) #define _PIF_SYSCALL_RESTART _BITUL(PIF_SYSCALL_RESTART) +#define _PIF_GUEST_FAULT _BITUL(PIF_GUEST_FAULT) #ifndef __ASSEMBLY__ diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h index 8bc87dcb10eb..2eb0c8a7b664 100644 --- a/arch/s390/include/asm/setup.h +++ b/arch/s390/include/asm/setup.h @@ -36,7 +36,7 @@ #define MACHINE_FLAG_SCC _BITUL(17) #define LPP_MAGIC _BITUL(31) -#define LPP_PFAULT_PID_MASK _AC(0xffffffff, UL) +#define LPP_PID_MASK _AC(0xffffffff, UL) #ifndef __ASSEMBLY__ diff --git a/arch/s390/include/asm/uaccess.h b/arch/s390/include/asm/uaccess.h index cdd0f0d999e2..ad6b91013a05 100644 --- a/arch/s390/include/asm/uaccess.h +++ b/arch/s390/include/asm/uaccess.h @@ -16,7 +16,7 @@ #include <asm/processor.h> #include <asm/ctl_reg.h> #include <asm/extable.h> - +#include <asm/facility.h> /* * The fs value determines whether argument validity checking should be @@ -26,27 +26,16 @@ * For historical reasons, these macros are grossly misnamed. */ -#define MAKE_MM_SEG(a) ((mm_segment_t) { (a) }) - - -#define KERNEL_DS MAKE_MM_SEG(0) -#define USER_DS MAKE_MM_SEG(1) +#define KERNEL_DS (0) +#define KERNEL_DS_SACF (1) +#define USER_DS (2) +#define USER_DS_SACF (3) #define get_ds() (KERNEL_DS) #define get_fs() (current->thread.mm_segment) -#define segment_eq(a,b) ((a).ar4 == (b).ar4) +#define segment_eq(a,b) (((a) & 2) == ((b) & 2)) -static inline void set_fs(mm_segment_t fs) -{ - current->thread.mm_segment = fs; - if (uaccess_kernel()) { - set_cpu_flag(CIF_ASCE_SECONDARY); - __ctl_load(S390_lowcore.kernel_asce, 7, 7); - } else { - clear_cpu_flag(CIF_ASCE_SECONDARY); - __ctl_load(S390_lowcore.user_asce, 7, 7); - } -} +void set_fs(mm_segment_t fs); static inline int __range_ok(unsigned long addr, unsigned long size) { @@ -95,7 +84,7 @@ raw_copy_to_user(void __user *to, const void *from, unsigned long n); static inline int __put_user_fn(void *x, void __user *ptr, unsigned long size) { - unsigned long spec = 0x810000UL; + unsigned long spec = 0x010000UL; int rc; switch (size) { @@ -125,7 +114,7 @@ static inline int __put_user_fn(void *x, void __user *ptr, unsigned long size) static inline int __get_user_fn(void *x, const void __user *ptr, unsigned long size) { - unsigned long spec = 0x81UL; + unsigned long spec = 0x01UL; int rc; switch (size) { diff --git a/arch/s390/include/asm/vdso.h b/arch/s390/include/asm/vdso.h index ae6261ef97d5..169d7604eb80 100644 --- a/arch/s390/include/asm/vdso.h +++ b/arch/s390/include/asm/vdso.h @@ -46,6 +46,7 @@ struct vdso_per_cpu_data { }; extern struct vdso_data *vdso_data; +extern struct vdso_data boot_vdso_data; void vdso_alloc_boot_cpu(struct lowcore *lowcore); int vdso_alloc_per_cpu(struct lowcore *lowcore); diff --git a/arch/s390/include/uapi/asm/perf_regs.h b/arch/s390/include/uapi/asm/perf_regs.h new file mode 100644 index 000000000000..7c8564f98205 --- /dev/null +++ b/arch/s390/include/uapi/asm/perf_regs.h @@ -0,0 +1,43 @@ +#ifndef _ASM_S390_PERF_REGS_H +#define _ASM_S390_PERF_REGS_H + +enum perf_event_s390_regs { + PERF_REG_S390_R0, + PERF_REG_S390_R1, + PERF_REG_S390_R2, + PERF_REG_S390_R3, + PERF_REG_S390_R4, + PERF_REG_S390_R5, + PERF_REG_S390_R6, + PERF_REG_S390_R7, + PERF_REG_S390_R8, + PERF_REG_S390_R9, + PERF_REG_S390_R10, + PERF_REG_S390_R11, + PERF_REG_S390_R12, + PERF_REG_S390_R13, + PERF_REG_S390_R14, + PERF_REG_S390_R15, + PERF_REG_S390_FP0, + PERF_REG_S390_FP1, + PERF_REG_S390_FP2, + PERF_REG_S390_FP3, + PERF_REG_S390_FP4, + PERF_REG_S390_FP5, + PERF_REG_S390_FP6, + PERF_REG_S390_FP7, + PERF_REG_S390_FP8, + PERF_REG_S390_FP9, + PERF_REG_S390_FP10, + PERF_REG_S390_FP11, + PERF_REG_S390_FP12, + PERF_REG_S390_FP13, + PERF_REG_S390_FP14, + PERF_REG_S390_FP15, + PERF_REG_S390_MASK, + PERF_REG_S390_PC, + + PERF_REG_S390_MAX +}; + +#endif /* _ASM_S390_PERF_REGS_H */ diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile index 83bc82001c06..909bce65cb2b 100644 --- a/arch/s390/kernel/Makefile +++ b/arch/s390/kernel/Makefile @@ -59,7 +59,7 @@ obj-y += processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o obj-y += debug.o irq.o ipl.o dis.o diag.o vdso.o als.o obj-y += sysinfo.o jump_label.o lgr.o os_info.o machine_kexec.o pgm_check.o obj-y += runtime_instr.o cache.o fpu.o dumpstack.o guarded_storage.o sthyi.o -obj-y += entry.o reipl.o relocate_kernel.o kdebugfs.o +obj-y += entry.o reipl.o relocate_kernel.o kdebugfs.o alternative.o extra-y += head.o head64.o vmlinux.lds @@ -77,10 +77,9 @@ obj-$(CONFIG_KPROBES) += kprobes.o obj-$(CONFIG_FUNCTION_TRACER) += mcount.o ftrace.o obj-$(CONFIG_CRASH_DUMP) += crash_dump.o obj-$(CONFIG_UPROBES) += uprobes.o -obj-$(CONFIG_ALTERNATIVES) += alternative.o obj-$(CONFIG_PERF_EVENTS) += perf_event.o perf_cpum_cf.o perf_cpum_sf.o -obj-$(CONFIG_PERF_EVENTS) += perf_cpum_cf_events.o +obj-$(CONFIG_PERF_EVENTS) += perf_cpum_cf_events.o perf_regs.o obj-$(CONFIG_TRACEPOINTS) += trace.o diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c index 33ec80df7ed4..587b195b588d 100644 --- a/arch/s390/kernel/asm-offsets.c +++ b/arch/s390/kernel/asm-offsets.c @@ -171,6 +171,7 @@ int main(void) OFFSET(__LC_RESTART_DATA, lowcore, restart_data); OFFSET(__LC_RESTART_SOURCE, lowcore, restart_source); OFFSET(__LC_USER_ASCE, lowcore, user_asce); + OFFSET(__LC_VDSO_ASCE, lowcore, vdso_asce); OFFSET(__LC_LPP, lowcore, lpp); OFFSET(__LC_CURRENT_PID, lowcore, current_pid); OFFSET(__LC_PERCPU_OFFSET, lowcore, percpu_offset); @@ -178,7 +179,6 @@ int main(void) OFFSET(__LC_MACHINE_FLAGS, lowcore, machine_flags); OFFSET(__LC_PREEMPT_COUNT, lowcore, preempt_count); OFFSET(__LC_GMAP, lowcore, gmap); - OFFSET(__LC_PASTE, lowcore, paste); /* software defined ABI-relevant lowcore locations 0xe00 - 0xe20 */ OFFSET(__LC_DUMP_REIPL, lowcore, ipib); /* hardware defined lowcore locations 0x1000 - 0x18ff */ diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c index a4a1208e3df3..ef246940b44c 100644 --- a/arch/s390/kernel/compat_signal.c +++ b/arch/s390/kernel/compat_signal.c @@ -50,19 +50,6 @@ typedef struct struct ucontext32 uc; } rt_sigframe32; -static inline void sigset_to_sigset32(unsigned long *set64, - compat_sigset_word *set32) -{ - set32[0] = (compat_sigset_word) set64[0]; - set32[1] = (compat_sigset_word)(set64[0] >> 32); -} - -static inline void sigset32_to_sigset(compat_sigset_word *set32, - unsigned long *set64) -{ - set64[0] = (unsigned long) set32[0] | ((unsigned long) set32[1] << 32); -} - int copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from) { int err; @@ -294,12 +281,10 @@ COMPAT_SYSCALL_DEFINE0(sigreturn) { struct pt_regs *regs = task_pt_regs(current); sigframe32 __user *frame = (sigframe32 __user *)regs->gprs[15]; - compat_sigset_t cset; sigset_t set; - if (__copy_from_user(&cset.sig, &frame->sc.oldmask, _SIGMASK_COPY_SIZE32)) + if (get_compat_sigset(&set, (compat_sigset_t __user *)frame->sc.oldmask)) goto badframe; - sigset32_to_sigset(cset.sig, set.sig); set_current_blocked(&set); save_fpu_regs(); if (restore_sigregs32(regs, &frame->sregs)) @@ -317,12 +302,10 @@ COMPAT_SYSCALL_DEFINE0(rt_sigreturn) { struct pt_regs *regs = task_pt_regs(current); rt_sigframe32 __user *frame = (rt_sigframe32 __user *)regs->gprs[15]; - compat_sigset_t cset; sigset_t set; - if (__copy_from_user(&cset, &frame->uc.uc_sigmask, sizeof(cset))) + if (get_compat_sigset(&set, &frame->uc.uc_sigmask)) goto badframe; - sigset32_to_sigset(cset.sig, set.sig); set_current_blocked(&set); if (compat_restore_altstack(&frame->uc.uc_stack)) goto badframe; @@ -372,7 +355,6 @@ static int setup_frame32(struct ksignal *ksig, sigset_t *set, { int sig = ksig->sig; sigframe32 __user *frame; - struct sigcontext32 sc; unsigned long restorer; size_t frame_size; @@ -394,9 +376,10 @@ static int setup_frame32(struct ksignal *ksig, sigset_t *set, return -EFAULT; /* Create struct sigcontext32 on the signal stack */ - sigset_to_sigset32(set->sig, sc.oldmask); - sc.sregs = (__u32)(unsigned long __force) &frame->sregs; - if (__copy_to_user(&frame->sc, &sc, sizeof(frame->sc))) + if (put_compat_sigset((compat_sigset_t __user *)frame->sc.oldmask, + set, sizeof(compat_sigset_t))) + return -EFAULT; + if (__put_user(ptr_to_compat(&frame->sc), &frame->sc.sregs)) return -EFAULT; /* Store registers needed to create the signal frame */ @@ -455,7 +438,6 @@ static int setup_frame32(struct ksignal *ksig, sigset_t *set, static int setup_rt_frame32(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs) { - compat_sigset_t cset; rt_sigframe32 __user *frame; unsigned long restorer; size_t frame_size; @@ -502,12 +484,11 @@ static int setup_rt_frame32(struct ksignal *ksig, sigset_t *set, store_sigregs(); /* Create ucontext on the signal stack. */ - sigset_to_sigset32(set->sig, cset.sig); if (__put_user(uc_flags, &frame->uc.uc_flags) || __put_user(0, &frame->uc.uc_link) || __compat_save_altstack(&frame->uc.uc_stack, regs->gprs[15]) || save_sigregs32(regs, &frame->uc.uc_mcontext) || - __copy_to_user(&frame->uc.uc_sigmask, &cset, sizeof(cset)) || + put_compat_sigset(&frame->uc.uc_sigmask, set, sizeof(compat_sigset_t)) || save_sigregs_ext32(regs, &frame->uc.uc_mcontext_ext)) return -EFAULT; diff --git a/arch/s390/kernel/dis.c b/arch/s390/kernel/dis.c index b811d3a8417d..3be829721cf9 100644 --- a/arch/s390/kernel/dis.c +++ b/arch/s390/kernel/dis.c @@ -480,7 +480,7 @@ void show_code(struct pt_regs *regs) { char *mode = user_mode(regs) ? "User" : "Krnl"; unsigned char code[64]; - char buffer[64], *ptr; + char buffer[128], *ptr; mm_segment_t old_fs; unsigned long addr; int start, end, opsize, hops, i; @@ -543,7 +543,7 @@ void show_code(struct pt_regs *regs) start += opsize; pr_cont("%s", buffer); ptr = buffer; - ptr += sprintf(ptr, "\n "); + ptr += sprintf(ptr, "\n\t "); hops++; } pr_cont("\n"); diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index f498d201f98d..a316cd6999ad 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -379,13 +379,21 @@ ENTRY(system_call) jg s390_handle_mcck # TIF bit will be cleared by handler # -# _CIF_ASCE_PRIMARY and/or CIF_ASCE_SECONDARY set, load user space asce +# _CIF_ASCE_PRIMARY and/or _CIF_ASCE_SECONDARY set, load user space asce # .Lsysc_asce: + ni __LC_CPU_FLAGS+7,255-_CIF_ASCE_SECONDARY + lctlg %c7,%c7,__LC_VDSO_ASCE # load secondary asce + TSTMSK __LC_CPU_FLAGS,_CIF_ASCE_PRIMARY + jz .Lsysc_return +#ifndef CONFIG_HAVE_MARCH_Z10_FEATURES + tm __LC_STFLE_FAC_LIST+3,0x10 # has MVCOS ? + jnz .Lsysc_set_fs_fixup ni __LC_CPU_FLAGS+7,255-_CIF_ASCE_PRIMARY lctlg %c1,%c1,__LC_USER_ASCE # load primary asce - TSTMSK __LC_CPU_FLAGS,_CIF_ASCE_SECONDARY - jz .Lsysc_return + j .Lsysc_return +.Lsysc_set_fs_fixup: +#endif larl %r14,.Lsysc_return jg set_fs_fixup @@ -518,6 +526,7 @@ ENTRY(pgm_check_handler) stmg %r8,%r15,__LC_SAVE_AREA_SYNC lg %r10,__LC_LAST_BREAK lg %r12,__LC_CURRENT + lghi %r11,0 larl %r13,cleanup_critical lmg %r8,%r9,__LC_PGM_OLD_PSW tmhh %r8,0x0001 # test problem state bit @@ -532,6 +541,7 @@ ENTRY(pgm_check_handler) ni __SIE_PROG0C+3(%r14),0xfe # no longer in SIE lctlg %c1,%c1,__LC_USER_ASCE # load primary asce larl %r9,sie_exit # skip forward to sie_exit + lghi %r11,_PIF_GUEST_FAULT #endif 0: tmhh %r8,0x4000 # PER bit set in old PSW ? jnz 1f # -> enabled, can't be a double fault @@ -549,13 +559,14 @@ ENTRY(pgm_check_handler) jz 3f mvc __THREAD_trap_tdb(256,%r14),0(%r13) 3: stg %r10,__THREAD_last_break(%r14) -4: la %r11,STACK_FRAME_OVERHEAD(%r15) +4: lgr %r13,%r11 + la %r11,STACK_FRAME_OVERHEAD(%r15) stmg %r0,%r7,__PT_R0(%r11) mvc __PT_R8(64,%r11),__LC_SAVE_AREA_SYNC stmg %r8,%r9,__PT_PSW(%r11) mvc __PT_INT_CODE(4,%r11),__LC_PGM_ILC mvc __PT_INT_PARM_LONG(8,%r11),__LC_TRANS_EXC_CODE - xc __PT_FLAGS(8,%r11),__PT_FLAGS(%r11) + stg %r13,__PT_FLAGS(%r11) stg %r10,__PT_ARGS(%r11) tm __LC_PGM_ILC+3,0x80 # check for per exception jz 5f @@ -738,10 +749,18 @@ ENTRY(io_int_handler) # _CIF_ASCE_PRIMARY and/or CIF_ASCE_SECONDARY set, load user space asce # .Lio_asce: + ni __LC_CPU_FLAGS+7,255-_CIF_ASCE_SECONDARY + lctlg %c7,%c7,__LC_VDSO_ASCE # load secondary asce + TSTMSK __LC_CPU_FLAGS,_CIF_ASCE_PRIMARY + jz .Lio_return +#ifndef CONFIG_HAVE_MARCH_Z10_FEATURES + tm __LC_STFLE_FAC_LIST+3,0x10 # has MVCOS ? + jnz .Lio_set_fs_fixup ni __LC_CPU_FLAGS+7,255-_CIF_ASCE_PRIMARY lctlg %c1,%c1,__LC_USER_ASCE # load primary asce - TSTMSK __LC_CPU_FLAGS,_CIF_ASCE_SECONDARY - jz .Lio_return + j .Lio_return +.Lio_set_fs_fixup: +#endif larl %r14,.Lio_return jg set_fs_fixup diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S index 172002da7075..38a973ccf501 100644 --- a/arch/s390/kernel/head64.S +++ b/arch/s390/kernel/head64.S @@ -28,7 +28,7 @@ ENTRY(startup_continue) lctlg %c0,%c15,.Lctl-.LPG1(%r13) # load control registers lg %r12,.Lparmaddr-.LPG1(%r13) # pointer to parameter area # move IPL device to lowcore - lghi %r0,__LC_PASTE + larl %r0,boot_vdso_data stg %r0,__LC_VDSO_PER_CPU # # Setup stack diff --git a/arch/s390/kernel/module.c b/arch/s390/kernel/module.c index 6d9f73bb4142..7b87991416fd 100644 --- a/arch/s390/kernel/module.c +++ b/arch/s390/kernel/module.c @@ -433,16 +433,13 @@ int module_finalize(const Elf_Ehdr *hdr, const Elf_Shdr *s; char *secstrings; - if (IS_ENABLED(CONFIG_ALTERNATIVES)) { - secstrings = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset; - for (s = sechdrs; s < sechdrs + hdr->e_shnum; s++) { - if (!strcmp(".altinstructions", - secstrings + s->sh_name)) { - /* patch .altinstructions */ - void *aseg = (void *)s->sh_addr; + secstrings = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset; + for (s = sechdrs; s < sechdrs + hdr->e_shnum; s++) { + if (!strcmp(".altinstructions", secstrings + s->sh_name)) { + /* patch .altinstructions */ + void *aseg = (void *)s->sh_addr; - apply_alternatives(aseg, aseg + s->sh_size); - } + apply_alternatives(aseg, aseg + s->sh_size); } } diff --git a/arch/s390/kernel/nmi.c b/arch/s390/kernel/nmi.c index 3f3cda41f32a..6ff169253cae 100644 --- a/arch/s390/kernel/nmi.c +++ b/arch/s390/kernel/nmi.c @@ -191,7 +191,6 @@ static int notrace s390_check_registers(union mci mci, int umode) { union ctlreg2 cr2; int kill_task; - void *fpt_save_area; kill_task = 0; @@ -224,7 +223,6 @@ static int notrace s390_check_registers(union mci mci, int umode) if (!test_cpu_flag(CIF_FPU)) kill_task = 1; } - fpt_save_area = &S390_lowcore.floating_pt_save_area; if (!mci.fc) { /* * Floating point control register can't be restored. diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c index bd4bbf61aaf3..227b38bd82c9 100644 --- a/arch/s390/kernel/perf_cpum_sf.c +++ b/arch/s390/kernel/perf_cpum_sf.c @@ -15,6 +15,7 @@ #include <linux/kernel_stat.h> #include <linux/perf_event.h> #include <linux/percpu.h> +#include <linux/pid.h> #include <linux/notifier.h> #include <linux/export.h> #include <linux/slab.h> @@ -77,6 +78,15 @@ struct sf_buffer { unsigned long *tail; /* last sample-data-block-table */ }; +struct aux_buffer { + struct sf_buffer sfb; + unsigned long head; /* index of SDB of buffer head */ + unsigned long alert_mark; /* index of SDB of alert request position */ + unsigned long empty_mark; /* mark of SDB not marked full */ + unsigned long *sdb_index; /* SDB address for fast lookup */ + unsigned long *sdbt_index; /* SDBT address for fast lookup */ +}; + struct cpu_hw_sf { /* CPU-measurement sampling information block */ struct hws_qsi_info_block qsi; @@ -85,6 +95,7 @@ struct cpu_hw_sf { struct sf_buffer sfb; /* Sampling buffer */ unsigned int flags; /* Status flags */ struct perf_event *event; /* Scheduled perf event */ + struct perf_output_handle handle; /* AUX buffer output handle */ }; static DEFINE_PER_CPU(struct cpu_hw_sf, cpu_hw_sf); @@ -341,22 +352,6 @@ static void sfb_init_allocs(unsigned long num, struct hw_perf_event *hwc) sfb_account_allocs(num, hwc); } -static size_t event_sample_size(struct hw_perf_event *hwc) -{ - struct sf_raw_sample *sfr = (struct sf_raw_sample *) RAWSAMPLE_REG(hwc); - size_t sample_size; - - /* The sample size depends on the sampling function: The basic-sampling - * function must be always enabled, diagnostic-sampling function is - * optional. - */ - sample_size = sfr->bsdes; - if (SAMPL_DIAG_MODE(hwc)) - sample_size += sfr->dsdes; - - return sample_size; -} - static void deallocate_buffers(struct cpu_hw_sf *cpuhw) { if (cpuhw->sfb.sdbt) @@ -366,35 +361,7 @@ static void deallocate_buffers(struct cpu_hw_sf *cpuhw) static int allocate_buffers(struct cpu_hw_sf *cpuhw, struct hw_perf_event *hwc) { unsigned long n_sdb, freq, factor; - size_t sfr_size, sample_size; - struct sf_raw_sample *sfr; - - /* Allocate raw sample buffer - * - * The raw sample buffer is used to temporarily store sampling data - * entries for perf raw sample processing. The buffer size mainly - * depends on the size of diagnostic-sampling data entries which is - * machine-specific. The exact size calculation includes: - * 1. The first 4 bytes of diagnostic-sampling data entries are - * already reflected in the sf_raw_sample structure. Subtract - * these bytes. - * 2. The perf raw sample data must be 8-byte aligned (u64) and - * perf's internal data size must be considered too. So add - * an additional u32 for correct alignment and subtract before - * allocating the buffer. - * 3. Store the raw sample buffer pointer in the perf event - * hardware structure. - */ - sfr_size = ALIGN((sizeof(*sfr) - sizeof(sfr->diag) + cpuhw->qsi.dsdes) + - sizeof(u32), sizeof(u64)); - sfr_size -= sizeof(u32); - sfr = kzalloc(sfr_size, GFP_KERNEL); - if (!sfr) - return -ENOMEM; - sfr->size = sfr_size; - sfr->bsdes = cpuhw->qsi.bsdes; - sfr->dsdes = cpuhw->qsi.dsdes; - RAWSAMPLE_REG(hwc) = (unsigned long) sfr; + size_t sample_size; /* Calculate sampling buffers using 4K pages * @@ -420,7 +387,7 @@ static int allocate_buffers(struct cpu_hw_sf *cpuhw, struct hw_perf_event *hwc) * ensure a minimum of CPUM_SF_MIN_SDBT (one table can manage up * to 511 SDBs). */ - sample_size = event_sample_size(hwc); + sample_size = sizeof(struct hws_basic_entry); freq = sample_rate_to_freq(&cpuhw->qsi, SAMPL_RATE(hwc)); factor = 1; n_sdb = DIV_ROUND_UP(freq, factor * ((PAGE_SIZE-64) / sample_size)); @@ -619,10 +586,6 @@ static int reserve_pmc_hardware(void) static void hw_perf_event_destroy(struct perf_event *event) { - /* Free raw sample buffer */ - if (RAWSAMPLE_REG(&event->hw)) - kfree((void *) RAWSAMPLE_REG(&event->hw)); - /* Release PMC if this is the last perf event */ if (!atomic_add_unless(&num_events, -1, 1)) { mutex_lock(&pmc_reserve_mutex); @@ -642,15 +605,8 @@ static void hw_init_period(struct hw_perf_event *hwc, u64 period) static void hw_reset_registers(struct hw_perf_event *hwc, unsigned long *sdbt_origin) { - struct sf_raw_sample *sfr; - /* (Re)set to first sample-data-block-table */ TEAR_REG(hwc) = (unsigned long) sdbt_origin; - - /* (Re)set raw sampling buffer register */ - sfr = (struct sf_raw_sample *) RAWSAMPLE_REG(hwc); - memset(&sfr->basic, 0, sizeof(sfr->basic)); - memset(&sfr->diag, 0, sfr->dsdes); } static unsigned long hw_limit_rate(const struct hws_qsi_info_block *si, @@ -660,6 +616,67 @@ static unsigned long hw_limit_rate(const struct hws_qsi_info_block *si, si->min_sampl_rate, si->max_sampl_rate); } +static u32 cpumsf_pid_type(struct perf_event *event, + u32 pid, enum pid_type type) +{ + struct task_struct *tsk; + + /* Idle process */ + if (!pid) + goto out; + + tsk = find_task_by_pid_ns(pid, &init_pid_ns); + pid = -1; + if (tsk) { + /* + * Only top level events contain the pid namespace in which + * they are created. + */ + if (event->parent) + event = event->parent; + pid = __task_pid_nr_ns(tsk, type, event->ns); + /* + * See also 1d953111b648 + * "perf/core: Don't report zero PIDs for exiting tasks". + */ + if (!pid && !pid_alive(tsk)) + pid = -1; + } +out: + return pid; +} + +static void cpumsf_output_event_pid(struct perf_event *event, + struct perf_sample_data *data, + struct pt_regs *regs) +{ + u32 pid; + struct perf_event_header header; + struct perf_output_handle handle; + + /* + * Obtain the PID from the basic-sampling data entry and + * correct the data->tid_entry.pid value. + */ + pid = data->tid_entry.pid; + + /* Protect callchain buffers, tasks */ + rcu_read_lock(); + + perf_prepare_sample(&header, data, event, regs); + if (perf_output_begin(&handle, event, header.size)) + goto out; + + /* Update the process ID (see also kernel/events/core.c) */ + data->tid_entry.pid = cpumsf_pid_type(event, pid, __PIDTYPE_TGID); + data->tid_entry.tid = cpumsf_pid_type(event, pid, PIDTYPE_PID); + + perf_output_sample(&handle, &header, data, event); + perf_output_end(&handle); +out: + rcu_read_unlock(); +} + static int __hw_perf_event_init(struct perf_event *event) { struct cpu_hw_sf *cpuhw; @@ -770,6 +787,10 @@ static int __hw_perf_event_init(struct perf_event *event) hwc->extra_reg.reg = REG_OVERFLOW; OVERFLOW_REG(hwc) = 0; + /* Use AUX buffer. No need to allocate it by ourself */ + if (attr->config == PERF_EVENT_CPUM_SF_DIAG) + return 0; + /* Allocate the per-CPU sampling buffer using the CPU information * from the event. If the event is not pinned to a particular * CPU (event->cpu == -1; or cpuhw == NULL), allocate sampling @@ -789,6 +810,14 @@ static int __hw_perf_event_init(struct perf_event *event) break; } } + + /* If PID/TID sampling is active, replace the default overflow + * handler to extract and resolve the PIDs from the basic-sampling + * data entries. + */ + if (event->attr.sample_type & PERF_SAMPLE_TID) + if (is_default_overflow_handler(event)) + event->overflow_handler = cpumsf_output_event_pid; out: return err; } @@ -866,10 +895,15 @@ static void cpumsf_pmu_enable(struct pmu *pmu) */ if (cpuhw->event) { hwc = &cpuhw->event->hw; - /* Account number of overflow-designated buffer extents */ - sfb_account_overflows(cpuhw, hwc); - if (sfb_has_pending_allocs(&cpuhw->sfb, hwc)) - extend_sampling_buffer(&cpuhw->sfb, hwc); + if (!(SAMPL_DIAG_MODE(hwc))) { + /* + * Account number of overflow-designated + * buffer extents + */ + sfb_account_overflows(cpuhw, hwc); + if (sfb_has_pending_allocs(&cpuhw->sfb, hwc)) + extend_sampling_buffer(&cpuhw->sfb, hwc); + } } /* (Re)enable the PMU and sampling facility */ @@ -884,6 +918,9 @@ static void cpumsf_pmu_enable(struct pmu *pmu) return; } + /* Load current program parameter */ + lpp(&S390_lowcore.lpp); + debug_sprintf_event(sfdbg, 6, "pmu_enable: es=%i cs=%i ed=%i cd=%i " "tear=%p dear=%p\n", cpuhw->lsctl.es, cpuhw->lsctl.cs, cpuhw->lsctl.ed, cpuhw->lsctl.cd, @@ -967,22 +1004,16 @@ static int perf_exclude_event(struct perf_event *event, struct pt_regs *regs, * * Return non-zero if an event overflow occurred. */ -static int perf_push_sample(struct perf_event *event, struct sf_raw_sample *sfr) +static int perf_push_sample(struct perf_event *event, + struct hws_basic_entry *basic) { int overflow; struct pt_regs regs; struct perf_sf_sde_regs *sde_regs; struct perf_sample_data data; - struct perf_raw_record raw = { - .frag = { - .size = sfr->size, - .data = sfr, - }, - }; /* Setup perf sample */ perf_sample_data_init(&data, 0, event->hw.last_period); - data.raw = &raw; /* Setup pt_regs to look like an CPU-measurement external interrupt * using the Program Request Alert code. The regs.int_parm_long @@ -994,11 +1025,11 @@ static int perf_push_sample(struct perf_event *event, struct sf_raw_sample *sfr) regs.int_parm = CPU_MF_INT_SF_PRA; sde_regs = (struct perf_sf_sde_regs *) ®s.int_parm_long; - psw_bits(regs.psw).ia = sfr->basic.ia; - psw_bits(regs.psw).dat = sfr->basic.T; - psw_bits(regs.psw).wait = sfr->basic.W; - psw_bits(regs.psw).pstate = sfr->basic.P; - psw_bits(regs.psw).as = sfr->basic.AS; + psw_bits(regs.psw).ia = basic->ia; + psw_bits(regs.psw).dat = basic->T; + psw_bits(regs.psw).wait = basic->W; + psw_bits(regs.psw).pstate = basic->P; + psw_bits(regs.psw).as = basic->AS; /* * Use the hardware provided configuration level to decide if the @@ -1011,7 +1042,7 @@ static int perf_push_sample(struct perf_event *event, struct sf_raw_sample *sfr) * If the value differs from 0xffff (the host value), we assume to * be a KVM guest. */ - switch (sfr->basic.CL) { + switch (basic->CL) { case 1: /* logical partition */ sde_regs->in_guest = 0; break; @@ -1019,11 +1050,17 @@ static int perf_push_sample(struct perf_event *event, struct sf_raw_sample *sfr) sde_regs->in_guest = 1; break; default: /* old machine, use heuristics */ - if (sfr->basic.gpp || sfr->basic.prim_asn != 0xffff) + if (basic->gpp || basic->prim_asn != 0xffff) sde_regs->in_guest = 1; break; } + /* + * Store the PID value from the sample-data-entry to be + * processed and resolved by cpumsf_output_event_pid(). + */ + data.tid_entry.pid = basic->hpp & LPP_PID_MASK; + overflow = 0; if (perf_exclude_event(event, ®s, sde_regs)) goto out; @@ -1041,75 +1078,12 @@ static void perf_event_count_update(struct perf_event *event, u64 count) local64_add(count, &event->count); } -static int sample_format_is_valid(struct hws_combined_entry *sample, - unsigned int flags) -{ - if (likely(flags & PERF_CPUM_SF_BASIC_MODE)) - /* Only basic-sampling data entries with data-entry-format - * version of 0x0001 can be processed. - */ - if (sample->basic.def != 0x0001) - return 0; - if (flags & PERF_CPUM_SF_DIAG_MODE) - /* The data-entry-format number of diagnostic-sampling data - * entries can vary. Because diagnostic data is just passed - * through, do only a sanity check on the DEF. - */ - if (sample->diag.def < 0x8001) - return 0; - return 1; -} - -static int sample_is_consistent(struct hws_combined_entry *sample, - unsigned long flags) -{ - /* This check applies only to basic-sampling data entries of potentially - * combined-sampling data entries. Invalid entries cannot be processed - * by the PMU and, thus, do not deliver an associated - * diagnostic-sampling data entry. - */ - if (unlikely(!(flags & PERF_CPUM_SF_BASIC_MODE))) - return 0; - /* - * Samples are skipped, if they are invalid or for which the - * instruction address is not predictable, i.e., the wait-state bit is - * set. - */ - if (sample->basic.I || sample->basic.W) - return 0; - return 1; -} - -static void reset_sample_slot(struct hws_combined_entry *sample, - unsigned long flags) -{ - if (likely(flags & PERF_CPUM_SF_BASIC_MODE)) - sample->basic.def = 0; - if (flags & PERF_CPUM_SF_DIAG_MODE) - sample->diag.def = 0; -} - -static void sfr_store_sample(struct sf_raw_sample *sfr, - struct hws_combined_entry *sample) -{ - if (likely(sfr->format & PERF_CPUM_SF_BASIC_MODE)) - sfr->basic = sample->basic; - if (sfr->format & PERF_CPUM_SF_DIAG_MODE) - memcpy(&sfr->diag, &sample->diag, sfr->dsdes); -} - -static void debug_sample_entry(struct hws_combined_entry *sample, - struct hws_trailer_entry *te, - unsigned long flags) +static void debug_sample_entry(struct hws_basic_entry *sample, + struct hws_trailer_entry *te) { debug_sprintf_event(sfdbg, 4, "hw_collect_samples: Found unknown " - "sampling data entry: te->f=%i basic.def=%04x (%p)" - " diag.def=%04x (%p)\n", te->f, - sample->basic.def, &sample->basic, - (flags & PERF_CPUM_SF_DIAG_MODE) - ? sample->diag.def : 0xFFFF, - (flags & PERF_CPUM_SF_DIAG_MODE) - ? &sample->diag : NULL); + "sampling data entry: te->f=%i basic.def=%04x (%p)\n", + te->f, sample->def, sample); } /* hw_collect_samples() - Walk through a sample-data-block and collect samples @@ -1135,44 +1109,37 @@ static void debug_sample_entry(struct hws_combined_entry *sample, static void hw_collect_samples(struct perf_event *event, unsigned long *sdbt, unsigned long long *overflow) { - unsigned long flags = SAMPL_FLAGS(&event->hw); - struct hws_combined_entry *sample; struct hws_trailer_entry *te; - struct sf_raw_sample *sfr; - size_t sample_size; - - /* Prepare and initialize raw sample data */ - sfr = (struct sf_raw_sample *) RAWSAMPLE_REG(&event->hw); - sfr->format = flags & PERF_CPUM_SF_MODE_MASK; + struct hws_basic_entry *sample; - sample_size = event_sample_size(&event->hw); te = (struct hws_trailer_entry *) trailer_entry_ptr(*sdbt); - sample = (struct hws_combined_entry *) *sdbt; + sample = (struct hws_basic_entry *) *sdbt; while ((unsigned long *) sample < (unsigned long *) te) { /* Check for an empty sample */ - if (!sample->basic.def) + if (!sample->def) break; /* Update perf event period */ perf_event_count_update(event, SAMPL_RATE(&event->hw)); - /* Check sampling data entry */ - if (sample_format_is_valid(sample, flags)) { + /* Check whether sample is valid */ + if (sample->def == 0x0001) { /* If an event overflow occurred, the PMU is stopped to * throttle event delivery. Remaining sample data is * discarded. */ if (!*overflow) { - if (sample_is_consistent(sample, flags)) { + /* Check whether sample is consistent */ + if (sample->I == 0 && sample->W == 0) { /* Deliver sample data to perf */ - sfr_store_sample(sfr, sample); - *overflow = perf_push_sample(event, sfr); + *overflow = perf_push_sample(event, + sample); } } else /* Count discarded samples */ *overflow += 1; } else { - debug_sample_entry(sample, te, flags); + debug_sample_entry(sample, te); /* Sample slot is not yet written or other record. * * This condition can occur if the buffer was reused @@ -1188,8 +1155,8 @@ static void hw_collect_samples(struct perf_event *event, unsigned long *sdbt, } /* Reset sample slot and advance to next sample */ - reset_sample_slot(sample, flags); - sample += sample_size; + sample->def = 0; + sample++; } } @@ -1215,6 +1182,13 @@ static void hw_perf_event_update(struct perf_event *event, int flush_all) unsigned long long event_overflow, sampl_overflow, num_sdb, te_flags; int done; + /* + * AUX buffer is used when in diagnostic sampling mode. + * No perf events/samples are created. + */ + if (SAMPL_DIAG_MODE(&event->hw)) + return; + if (flush_all && SDB_FULL_BLOCKS(hwc)) flush_all = 0; @@ -1291,6 +1265,439 @@ static void hw_perf_event_update(struct perf_event *event, int flush_all) sampl_overflow, event_overflow); } +#define AUX_SDB_INDEX(aux, i) ((i) % aux->sfb.num_sdb) +#define AUX_SDB_NUM(aux, start, end) (end >= start ? end - start + 1 : 0) +#define AUX_SDB_NUM_ALERT(aux) AUX_SDB_NUM(aux, aux->head, aux->alert_mark) +#define AUX_SDB_NUM_EMPTY(aux) AUX_SDB_NUM(aux, aux->head, aux->empty_mark) + +/* + * Get trailer entry by index of SDB. + */ +static struct hws_trailer_entry *aux_sdb_trailer(struct aux_buffer *aux, + unsigned long index) +{ + unsigned long sdb; + + index = AUX_SDB_INDEX(aux, index); + sdb = aux->sdb_index[index]; + return (struct hws_trailer_entry *)trailer_entry_ptr(sdb); +} + +/* + * Finish sampling on the cpu. Called by cpumsf_pmu_del() with pmu + * disabled. Collect the full SDBs in AUX buffer which have not reached + * the point of alert indicator. And ignore the SDBs which are not + * full. + * + * 1. Scan SDBs to see how much data is there and consume them. + * 2. Remove alert indicator in the buffer. + */ +static void aux_output_end(struct perf_output_handle *handle) +{ + unsigned long i, range_scan, idx; + struct aux_buffer *aux; + struct hws_trailer_entry *te; + + aux = perf_get_aux(handle); + if (!aux) + return; + + range_scan = AUX_SDB_NUM_ALERT(aux); + for (i = 0, idx = aux->head; i < range_scan; i++, idx++) { + te = aux_sdb_trailer(aux, idx); + if (!(te->flags & SDB_TE_BUFFER_FULL_MASK)) + break; + } + /* i is num of SDBs which are full */ + perf_aux_output_end(handle, i << PAGE_SHIFT); + + /* Remove alert indicators in the buffer */ + te = aux_sdb_trailer(aux, aux->alert_mark); + te->flags &= ~SDB_TE_ALERT_REQ_MASK; + + debug_sprintf_event(sfdbg, 6, "aux_output_end: collect %lx SDBs\n", i); +} + +/* + * Start sampling on the CPU. Called by cpumsf_pmu_add() when an event + * is first added to the CPU or rescheduled again to the CPU. It is called + * with pmu disabled. + * + * 1. Reset the trailer of SDBs to get ready for new data. + * 2. Tell the hardware where to put the data by reset the SDBs buffer + * head(tear/dear). + */ +static int aux_output_begin(struct perf_output_handle *handle, + struct aux_buffer *aux, + struct cpu_hw_sf *cpuhw) +{ + unsigned long range; + unsigned long i, range_scan, idx; + unsigned long head, base, offset; + struct hws_trailer_entry *te; + + if (WARN_ON_ONCE(handle->head & ~PAGE_MASK)) + return -EINVAL; + + aux->head = handle->head >> PAGE_SHIFT; + range = (handle->size + 1) >> PAGE_SHIFT; + if (range <= 1) + return -ENOMEM; + + /* + * SDBs between aux->head and aux->empty_mark are already ready + * for new data. range_scan is num of SDBs not within them. + */ + if (range > AUX_SDB_NUM_EMPTY(aux)) { + range_scan = range - AUX_SDB_NUM_EMPTY(aux); + idx = aux->empty_mark + 1; + for (i = 0; i < range_scan; i++, idx++) { + te = aux_sdb_trailer(aux, idx); + te->flags = te->flags & ~SDB_TE_BUFFER_FULL_MASK; + te->flags = te->flags & ~SDB_TE_ALERT_REQ_MASK; + te->overflow = 0; + } + /* Save the position of empty SDBs */ + aux->empty_mark = aux->head + range - 1; + } + + /* Set alert indicator */ + aux->alert_mark = aux->head + range/2 - 1; + te = aux_sdb_trailer(aux, aux->alert_mark); + te->flags = te->flags | SDB_TE_ALERT_REQ_MASK; + + /* Reset hardware buffer head */ + head = AUX_SDB_INDEX(aux, aux->head); + base = aux->sdbt_index[head / CPUM_SF_SDB_PER_TABLE]; + offset = head % CPUM_SF_SDB_PER_TABLE; + cpuhw->lsctl.tear = base + offset * sizeof(unsigned long); + cpuhw->lsctl.dear = aux->sdb_index[head]; + + debug_sprintf_event(sfdbg, 6, "aux_output_begin: " + "head->alert_mark->empty_mark (num_alert, range)" + "[%lx -> %lx -> %lx] (%lx, %lx) " + "tear index %lx, tear %lx dear %lx\n", + aux->head, aux->alert_mark, aux->empty_mark, + AUX_SDB_NUM_ALERT(aux), range, + head / CPUM_SF_SDB_PER_TABLE, + cpuhw->lsctl.tear, + cpuhw->lsctl.dear); + + return 0; +} + +/* + * Set alert indicator on SDB at index @alert_index while sampler is running. + * + * Return true if successfully. + * Return false if full indicator is already set by hardware sampler. + */ +static bool aux_set_alert(struct aux_buffer *aux, unsigned long alert_index, + unsigned long long *overflow) +{ + unsigned long long orig_overflow, orig_flags, new_flags; + struct hws_trailer_entry *te; + + te = aux_sdb_trailer(aux, alert_index); + do { + orig_flags = te->flags; + orig_overflow = te->overflow; + *overflow = orig_overflow; + if (orig_flags & SDB_TE_BUFFER_FULL_MASK) { + /* + * SDB is already set by hardware. + * Abort and try to set somewhere + * behind. + */ + return false; + } + new_flags = orig_flags | SDB_TE_ALERT_REQ_MASK; + } while (!cmpxchg_double(&te->flags, &te->overflow, + orig_flags, orig_overflow, + new_flags, 0ULL)); + return true; +} + +/* + * aux_reset_buffer() - Scan and setup SDBs for new samples + * @aux: The AUX buffer to set + * @range: The range of SDBs to scan started from aux->head + * @overflow: Set to overflow count + * + * Set alert indicator on the SDB at index of aux->alert_mark. If this SDB is + * marked as empty, check if it is already set full by the hardware sampler. + * If yes, that means new data is already there before we can set an alert + * indicator. Caller should try to set alert indicator to some position behind. + * + * Scan the SDBs in AUX buffer from behind aux->empty_mark. They are used + * previously and have already been consumed by user space. Reset these SDBs + * (clear full indicator and alert indicator) for new data. + * If aux->alert_mark fall in this area, just set it. Overflow count is + * recorded while scanning. + * + * SDBs between aux->head and aux->empty_mark are already reset at last time. + * and ready for new samples. So scanning on this area could be skipped. + * + * Return true if alert indicator is set successfully and false if not. + */ +static bool aux_reset_buffer(struct aux_buffer *aux, unsigned long range, + unsigned long long *overflow) +{ + unsigned long long orig_overflow, orig_flags, new_flags; + unsigned long i, range_scan, idx; + struct hws_trailer_entry *te; + + if (range <= AUX_SDB_NUM_EMPTY(aux)) + /* + * No need to scan. All SDBs in range are marked as empty. + * Just set alert indicator. Should check race with hardware + * sampler. + */ + return aux_set_alert(aux, aux->alert_mark, overflow); + + if (aux->alert_mark <= aux->empty_mark) + /* + * Set alert indicator on empty SDB. Should check race + * with hardware sampler. + */ + if (!aux_set_alert(aux, aux->alert_mark, overflow)) + return false; + + /* + * Scan the SDBs to clear full and alert indicator used previously. + * Start scanning from one SDB behind empty_mark. If the new alert + * indicator fall into this range, set it. + */ + range_scan = range - AUX_SDB_NUM_EMPTY(aux); + idx = aux->empty_mark + 1; + for (i = 0; i < range_scan; i++, idx++) { + te = aux_sdb_trailer(aux, idx); + do { + orig_flags = te->flags; + orig_overflow = te->overflow; + new_flags = orig_flags & ~SDB_TE_BUFFER_FULL_MASK; + if (idx == aux->alert_mark) + new_flags |= SDB_TE_ALERT_REQ_MASK; + else + new_flags &= ~SDB_TE_ALERT_REQ_MASK; + } while (!cmpxchg_double(&te->flags, &te->overflow, + orig_flags, orig_overflow, + new_flags, 0ULL)); + *overflow += orig_overflow; + } + + /* Update empty_mark to new position */ + aux->empty_mark = aux->head + range - 1; + + return true; +} + +/* + * Measurement alert handler for diagnostic mode sampling. + */ +static void hw_collect_aux(struct cpu_hw_sf *cpuhw) +{ + struct aux_buffer *aux; + int done = 0; + unsigned long range = 0, size; + unsigned long long overflow = 0; + struct perf_output_handle *handle = &cpuhw->handle; + unsigned long num_sdb; + + aux = perf_get_aux(handle); + if (WARN_ON_ONCE(!aux)) + return; + + /* Inform user space new data arrived */ + size = AUX_SDB_NUM_ALERT(aux) << PAGE_SHIFT; + perf_aux_output_end(handle, size); + num_sdb = aux->sfb.num_sdb; + + while (!done) { + /* Get an output handle */ + aux = perf_aux_output_begin(handle, cpuhw->event); + if (handle->size == 0) { + pr_err("The AUX buffer with %lu pages for the " + "diagnostic-sampling mode is full\n", + num_sdb); + debug_sprintf_event(sfdbg, 1, "AUX buffer used up\n"); + break; + } + if (WARN_ON_ONCE(!aux)) + return; + + /* Update head and alert_mark to new position */ + aux->head = handle->head >> PAGE_SHIFT; + range = (handle->size + 1) >> PAGE_SHIFT; + if (range == 1) + aux->alert_mark = aux->head; + else + aux->alert_mark = aux->head + range/2 - 1; + + if (aux_reset_buffer(aux, range, &overflow)) { + if (!overflow) { + done = 1; + break; + } + size = range << PAGE_SHIFT; + perf_aux_output_end(&cpuhw->handle, size); + pr_err("Sample data caused the AUX buffer with %lu " + "pages to overflow\n", num_sdb); + debug_sprintf_event(sfdbg, 1, "head %lx range %lx " + "overflow %llx\n", + aux->head, range, overflow); + } else { + size = AUX_SDB_NUM_ALERT(aux) << PAGE_SHIFT; + perf_aux_output_end(&cpuhw->handle, size); + debug_sprintf_event(sfdbg, 6, "head %lx alert %lx " + "already full, try another\n", + aux->head, aux->alert_mark); + } + } + + if (done) + debug_sprintf_event(sfdbg, 6, "aux_reset_buffer: " + "[%lx -> %lx -> %lx] (%lx, %lx)\n", + aux->head, aux->alert_mark, aux->empty_mark, + AUX_SDB_NUM_ALERT(aux), range); +} + +/* + * Callback when freeing AUX buffers. + */ +static void aux_buffer_free(void *data) +{ + struct aux_buffer *aux = data; + unsigned long i, num_sdbt; + + if (!aux) + return; + + /* Free SDBT. SDB is freed by the caller */ + num_sdbt = aux->sfb.num_sdbt; + for (i = 0; i < num_sdbt; i++) + free_page(aux->sdbt_index[i]); + + kfree(aux->sdbt_index); + kfree(aux->sdb_index); + kfree(aux); + + debug_sprintf_event(sfdbg, 4, "aux_buffer_free: free " + "%lu SDBTs\n", num_sdbt); +} + +/* + * aux_buffer_setup() - Setup AUX buffer for diagnostic mode sampling + * @cpu: On which to allocate, -1 means current + * @pages: Array of pointers to buffer pages passed from perf core + * @nr_pages: Total pages + * @snapshot: Flag for snapshot mode + * + * This is the callback when setup an event using AUX buffer. Perf tool can + * trigger this by an additional mmap() call on the event. Unlike the buffer + * for basic samples, AUX buffer belongs to the event. It is scheduled with + * the task among online cpus when it is a per-thread event. + * + * Return the private AUX buffer structure if success or NULL if fails. + */ +static void *aux_buffer_setup(int cpu, void **pages, int nr_pages, + bool snapshot) +{ + struct sf_buffer *sfb; + struct aux_buffer *aux; + unsigned long *new, *tail; + int i, n_sdbt; + + if (!nr_pages || !pages) + return NULL; + + if (nr_pages > CPUM_SF_MAX_SDB * CPUM_SF_SDB_DIAG_FACTOR) { + pr_err("AUX buffer size (%i pages) is larger than the " + "maximum sampling buffer limit\n", + nr_pages); + return NULL; + } else if (nr_pages < CPUM_SF_MIN_SDB * CPUM_SF_SDB_DIAG_FACTOR) { + pr_err("AUX buffer size (%i pages) is less than the " + "minimum sampling buffer limit\n", + nr_pages); + return NULL; + } + + /* Allocate aux_buffer struct for the event */ + aux = kmalloc(sizeof(struct aux_buffer), GFP_KERNEL); + if (!aux) + goto no_aux; + sfb = &aux->sfb; + + /* Allocate sdbt_index for fast reference */ + n_sdbt = (nr_pages + CPUM_SF_SDB_PER_TABLE - 1) / CPUM_SF_SDB_PER_TABLE; + aux->sdbt_index = kmalloc_array(n_sdbt, sizeof(void *), GFP_KERNEL); + if (!aux->sdbt_index) + goto no_sdbt_index; + + /* Allocate sdb_index for fast reference */ + aux->sdb_index = kmalloc_array(nr_pages, sizeof(void *), GFP_KERNEL); + if (!aux->sdb_index) + goto no_sdb_index; + + /* Allocate the first SDBT */ + sfb->num_sdbt = 0; + sfb->sdbt = (unsigned long *) get_zeroed_page(GFP_KERNEL); + if (!sfb->sdbt) + goto no_sdbt; + aux->sdbt_index[sfb->num_sdbt++] = (unsigned long)sfb->sdbt; + tail = sfb->tail = sfb->sdbt; + + /* + * Link the provided pages of AUX buffer to SDBT. + * Allocate SDBT if needed. + */ + for (i = 0; i < nr_pages; i++, tail++) { + if (require_table_link(tail)) { + new = (unsigned long *) get_zeroed_page(GFP_KERNEL); + if (!new) + goto no_sdbt; + aux->sdbt_index[sfb->num_sdbt++] = (unsigned long)new; + /* Link current page to tail of chain */ + *tail = (unsigned long)(void *) new + 1; + tail = new; + } + /* Tail is the entry in a SDBT */ + *tail = (unsigned long)pages[i]; + aux->sdb_index[i] = (unsigned long)pages[i]; + } + sfb->num_sdb = nr_pages; + + /* Link the last entry in the SDBT to the first SDBT */ + *tail = (unsigned long) sfb->sdbt + 1; + sfb->tail = tail; + + /* + * Initial all SDBs are zeroed. Mark it as empty. + * So there is no need to clear the full indicator + * when this event is first added. + */ + aux->empty_mark = sfb->num_sdb - 1; + + debug_sprintf_event(sfdbg, 4, "aux_buffer_setup: setup %lu SDBTs" + " and %lu SDBs\n", + sfb->num_sdbt, sfb->num_sdb); + + return aux; + +no_sdbt: + /* SDBs (AUX buffer pages) are freed by caller */ + for (i = 0; i < sfb->num_sdbt; i++) + free_page(aux->sdbt_index[i]); + kfree(aux->sdb_index); +no_sdb_index: + kfree(aux->sdbt_index); +no_sdbt_index: + kfree(aux); +no_aux: + return NULL; +} + static void cpumsf_pmu_read(struct perf_event *event) { /* Nothing to do ... updates are interrupt-driven */ @@ -1342,12 +1749,13 @@ static void cpumsf_pmu_stop(struct perf_event *event, int flags) static int cpumsf_pmu_add(struct perf_event *event, int flags) { struct cpu_hw_sf *cpuhw = this_cpu_ptr(&cpu_hw_sf); + struct aux_buffer *aux; int err; if (cpuhw->flags & PMU_F_IN_USE) return -EAGAIN; - if (!cpuhw->sfb.sdbt) + if (!SAMPL_DIAG_MODE(&event->hw) && !cpuhw->sfb.sdbt) return -EINVAL; err = 0; @@ -1362,10 +1770,12 @@ static int cpumsf_pmu_add(struct perf_event *event, int flags) */ cpuhw->lsctl.s = 0; cpuhw->lsctl.h = 1; - cpuhw->lsctl.tear = (unsigned long) cpuhw->sfb.sdbt; - cpuhw->lsctl.dear = *(unsigned long *) cpuhw->sfb.sdbt; cpuhw->lsctl.interval = SAMPL_RATE(&event->hw); - hw_reset_registers(&event->hw, cpuhw->sfb.sdbt); + if (!SAMPL_DIAG_MODE(&event->hw)) { + cpuhw->lsctl.tear = (unsigned long) cpuhw->sfb.sdbt; + cpuhw->lsctl.dear = *(unsigned long *) cpuhw->sfb.sdbt; + hw_reset_registers(&event->hw, cpuhw->sfb.sdbt); + } /* Ensure sampling functions are in the disabled state. If disabled, * switch on sampling enable control. */ @@ -1373,9 +1783,18 @@ static int cpumsf_pmu_add(struct perf_event *event, int flags) err = -EAGAIN; goto out; } - cpuhw->lsctl.es = 1; - if (SAMPL_DIAG_MODE(&event->hw)) + if (SAMPL_DIAG_MODE(&event->hw)) { + aux = perf_aux_output_begin(&cpuhw->handle, event); + if (!aux) { + err = -EINVAL; + goto out; + } + err = aux_output_begin(&cpuhw->handle, aux, cpuhw); + if (err) + goto out; cpuhw->lsctl.ed = 1; + } + cpuhw->lsctl.es = 1; /* Set in_use flag and store event */ cpuhw->event = event; @@ -1401,6 +1820,8 @@ static void cpumsf_pmu_del(struct perf_event *event, int flags) cpuhw->flags &= ~PMU_F_IN_USE; cpuhw->event = NULL; + if (SAMPL_DIAG_MODE(&event->hw)) + aux_output_end(&cpuhw->handle); perf_event_update_userpage(event); perf_pmu_enable(event->pmu); } @@ -1448,6 +1869,9 @@ static struct pmu cpumf_sampling = { .read = cpumsf_pmu_read, .attr_groups = cpumsf_pmu_attr_groups, + + .setup_aux = aux_buffer_setup, + .free_aux = aux_buffer_free, }; static void cpumf_measurement_alert(struct ext_code ext_code, @@ -1471,7 +1895,10 @@ static void cpumf_measurement_alert(struct ext_code ext_code, /* Program alert request */ if (alert & CPU_MF_INT_SF_PRA) { if (cpuhw->flags & PMU_F_IN_USE) - hw_perf_event_update(cpuhw->event, 0); + if (SAMPL_DIAG_MODE(&cpuhw->event->hw)) + hw_collect_aux(cpuhw); + else + hw_perf_event_update(cpuhw->event, 0); else WARN_ON_ONCE(!(cpuhw->flags & PMU_F_IN_USE)); } @@ -1590,6 +2017,9 @@ static int __init init_cpum_sampling_pmu(void) return -ENODEV; } + if (!si.as && !si.ad) + return -ENODEV; + if (si.bsdes != sizeof(struct hws_basic_entry)) { pr_cpumsf_err(RS_INIT_FAILURE_BSDES); return -EINVAL; diff --git a/arch/s390/kernel/perf_regs.c b/arch/s390/kernel/perf_regs.c new file mode 100644 index 000000000000..f8603ebed669 --- /dev/null +++ b/arch/s390/kernel/perf_regs.c @@ -0,0 +1,70 @@ +#include <linux/perf_event.h> +#include <linux/perf_regs.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/bug.h> +#include <asm/ptrace.h> +#include <asm/fpu/api.h> +#include <asm/fpu/types.h> + +u64 perf_reg_value(struct pt_regs *regs, int idx) +{ + freg_t fp; + + if (WARN_ON_ONCE((u32)idx >= PERF_REG_S390_MAX)) + return 0; + + if (idx >= PERF_REG_S390_R0 && idx <= PERF_REG_S390_R15) + return regs->gprs[idx]; + + if (idx >= PERF_REG_S390_FP0 && idx <= PERF_REG_S390_FP15) { + if (!user_mode(regs)) + return 0; + + idx -= PERF_REG_S390_FP0; + fp = MACHINE_HAS_VX ? *(freg_t *)(current->thread.fpu.vxrs + idx) + : current->thread.fpu.fprs[idx]; + return fp.ui; + } + + if (idx == PERF_REG_S390_MASK) + return regs->psw.mask; + if (idx == PERF_REG_S390_PC) + return regs->psw.addr; + + return regs->gprs[idx]; +} + +#define REG_RESERVED (~((1UL << PERF_REG_S390_MAX) - 1)) + +int perf_reg_validate(u64 mask) +{ + if (!mask || mask & REG_RESERVED) + return -EINVAL; + + return 0; +} + +u64 perf_reg_abi(struct task_struct *task) +{ + if (test_tsk_thread_flag(task, TIF_31BIT)) + return PERF_SAMPLE_REGS_ABI_32; + + return PERF_SAMPLE_REGS_ABI_64; +} + +void perf_get_regs_user(struct perf_regs *regs_user, + struct pt_regs *regs, + struct pt_regs *regs_user_copy) +{ + /* + * Use the regs from the first interruption and let + * perf_sample_regs_intr() handle interrupts (regs == get_irq_regs()). + * + * Also save FPU registers for user-space tasks only. + */ + regs_user->regs = task_pt_regs(current); + if (user_mode(regs_user->regs)) + save_fpu_regs(); + regs_user->abi = perf_reg_abi(current); +} diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c index 0520854a4dab..39a218703c50 100644 --- a/arch/s390/kernel/vdso.c +++ b/arch/s390/kernel/vdso.c @@ -158,16 +158,9 @@ int vdso_alloc_per_cpu(struct lowcore *lowcore) { unsigned long segment_table, page_table, page_frame; struct vdso_per_cpu_data *vd; - u32 *psal, *aste; - int i; - - lowcore->vdso_per_cpu_data = __LC_PASTE; - - if (!vdso_enabled) - return 0; segment_table = __get_free_pages(GFP_KERNEL, SEGMENT_ORDER); - page_table = get_zeroed_page(GFP_KERNEL | GFP_DMA); + page_table = get_zeroed_page(GFP_KERNEL); page_frame = get_zeroed_page(GFP_KERNEL); if (!segment_table || !page_table || !page_frame) goto out; @@ -179,25 +172,15 @@ int vdso_alloc_per_cpu(struct lowcore *lowcore) vd->cpu_nr = lowcore->cpu_nr; vd->node_id = cpu_to_node(vd->cpu_nr); - /* Set up access register mode page table */ + /* Set up page table for the vdso address space */ memset64((u64 *)segment_table, _SEGMENT_ENTRY_EMPTY, _CRST_ENTRIES); memset64((u64 *)page_table, _PAGE_INVALID, PTRS_PER_PTE); *(unsigned long *) segment_table = _SEGMENT_ENTRY + page_table; *(unsigned long *) page_table = _PAGE_PROTECT + page_frame; - psal = (u32 *) (page_table + 256*sizeof(unsigned long)); - aste = psal + 32; - - for (i = 4; i < 32; i += 4) - psal[i] = 0x80000000; - - lowcore->paste[4] = (u32)(addr_t) psal; - psal[0] = 0x02000000; - psal[2] = (u32)(addr_t) aste; - *(unsigned long *) (aste + 2) = segment_table + + lowcore->vdso_asce = segment_table + _ASCE_TABLE_LENGTH + _ASCE_USER_BITS + _ASCE_TYPE_SEGMENT; - aste[4] = (u32)(addr_t) psal; lowcore->vdso_per_cpu_data = page_frame; return 0; @@ -212,14 +195,8 @@ out: void vdso_free_per_cpu(struct lowcore *lowcore) { unsigned long segment_table, page_table, page_frame; - u32 *psal, *aste; - - if (!vdso_enabled) - return; - psal = (u32 *)(addr_t) lowcore->paste[4]; - aste = (u32 *)(addr_t) psal[2]; - segment_table = *(unsigned long *)(aste + 2) & PAGE_MASK; + segment_table = lowcore->vdso_asce & PAGE_MASK; page_table = *(unsigned long *) segment_table; page_frame = *(unsigned long *) page_table; @@ -228,16 +205,6 @@ void vdso_free_per_cpu(struct lowcore *lowcore) free_pages(segment_table, SEGMENT_ORDER); } -static void vdso_init_cr5(void) -{ - unsigned long cr5; - - if (!vdso_enabled) - return; - cr5 = offsetof(struct lowcore, paste); - __ctl_load(cr5, 5, 5); -} - /* * This is called from binfmt_elf, we create the special vma for the * vDSO and insert it into the mm struct tree @@ -314,8 +281,6 @@ static int __init vdso_init(void) { int i; - if (!vdso_enabled) - return 0; vdso_init_data(vdso_data); #ifdef CONFIG_COMPAT /* Calculate the size of the 32 bit vDSO */ @@ -354,7 +319,6 @@ static int __init vdso_init(void) vdso64_pagelist[vdso64_pages] = NULL; if (vdso_alloc_per_cpu(&S390_lowcore)) BUG(); - vdso_init_cr5(); get_page(virt_to_page(vdso_data)); diff --git a/arch/s390/kernel/vdso32/getcpu.S b/arch/s390/kernel/vdso32/getcpu.S index 6e30769dd017..5477a2c112fb 100644 --- a/arch/s390/kernel/vdso32/getcpu.S +++ b/arch/s390/kernel/vdso32/getcpu.S @@ -15,23 +15,11 @@ .type __kernel_getcpu,@function __kernel_getcpu: .cfi_startproc - ear %r1,%a4 - lhi %r4,1 - sll %r4,24 - sar %a4,%r4 la %r4,0 - epsw %r0,0 - sacf 512 + sacf 256 l %r5,__VDSO_CPU_NR(%r4) l %r4,__VDSO_NODE_ID(%r4) - tml %r0,0x4000 - jo 1f - tml %r0,0x8000 - jno 0f - sacf 256 - j 1f -0: sacf 0 -1: sar %a4,%r1 + sacf 0 ltr %r2,%r2 jz 2f st %r5,0(%r2) diff --git a/arch/s390/kernel/vdso64/clock_gettime.S b/arch/s390/kernel/vdso64/clock_gettime.S index 9c3b12626dba..5d7b56b49458 100644 --- a/arch/s390/kernel/vdso64/clock_gettime.S +++ b/arch/s390/kernel/vdso64/clock_gettime.S @@ -114,23 +114,12 @@ __kernel_clock_gettime: br %r14 /* CPUCLOCK_VIRT for this thread */ -9: icm %r0,15,__VDSO_ECTG_OK(%r5) +9: lghi %r4,0 + icm %r0,15,__VDSO_ECTG_OK(%r5) jz 12f - ear %r2,%a4 - llilh %r4,0x0100 - sar %a4,%r4 - lghi %r4,0 - epsw %r5,0 - sacf 512 /* Magic ectg instruction */ + sacf 256 /* Magic ectg instruction */ .insn ssf,0xc80100000000,__VDSO_ECTG_BASE(4),__VDSO_ECTG_USER(4),4 - tml %r5,0x4000 - jo 11f - tml %r5,0x8000 - jno 10f - sacf 256 - j 11f -10: sacf 0 -11: sar %a4,%r2 + sacf 0 algr %r1,%r0 /* r1 = cputime as TOD value */ mghi %r1,1000 /* convert to nanoseconds */ srlg %r1,%r1,12 /* r1 = cputime in nanosec */ diff --git a/arch/s390/kernel/vdso64/getcpu.S b/arch/s390/kernel/vdso64/getcpu.S index 43983764b959..e9c34364d97b 100644 --- a/arch/s390/kernel/vdso64/getcpu.S +++ b/arch/s390/kernel/vdso64/getcpu.S @@ -15,22 +15,11 @@ .type __kernel_getcpu,@function __kernel_getcpu: .cfi_startproc - ear %r1,%a4 - llilh %r4,0x0100 - sar %a4,%r4 la %r4,0 - epsw %r0,0 - sacf 512 + sacf 256 l %r5,__VDSO_CPU_NR(%r4) l %r4,__VDSO_NODE_ID(%r4) - tml %r0,0x4000 - jo 1f - tml %r0,0x8000 - jno 0f - sacf 256 - j 1f -0: sacf 0 -1: sar %a4,%r1 + sacf 0 ltgr %r2,%r2 jz 2f st %r5,0(%r2) diff --git a/arch/s390/lib/spinlock.c b/arch/s390/lib/spinlock.c index 84c0faeaf7ea..30a7c8c29964 100644 --- a/arch/s390/lib/spinlock.c +++ b/arch/s390/lib/spinlock.c @@ -78,7 +78,7 @@ static inline int arch_load_niai4(int *lock) ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */ " l %0,%1\n" : "=d" (owner) : "Q" (*lock) : "memory"); - return owner; + return owner; } static inline int arch_cmpxchg_niai8(int *lock, int old, int new) @@ -226,9 +226,10 @@ static inline void arch_spin_lock_classic(arch_spinlock_t *lp) /* Try to get the lock if it is free. */ if (!owner) { new = (old & _Q_TAIL_MASK) | lockval; - if (arch_cmpxchg_niai8(&lp->lock, old, new)) + if (arch_cmpxchg_niai8(&lp->lock, old, new)) { /* Got the lock */ - return; + return; + } continue; } if (count-- >= 0) diff --git a/arch/s390/lib/uaccess.c b/arch/s390/lib/uaccess.c index 802903c50de1..cae5a1e16cbd 100644 --- a/arch/s390/lib/uaccess.c +++ b/arch/s390/lib/uaccess.c @@ -40,10 +40,67 @@ static inline int copy_with_mvcos(void) } #endif +void set_fs(mm_segment_t fs) +{ + current->thread.mm_segment = fs; + if (fs == USER_DS) { + __ctl_load(S390_lowcore.user_asce, 1, 1); + clear_cpu_flag(CIF_ASCE_PRIMARY); + } else { + __ctl_load(S390_lowcore.kernel_asce, 1, 1); + set_cpu_flag(CIF_ASCE_PRIMARY); + } + if (fs & 1) { + if (fs == USER_DS_SACF) + __ctl_load(S390_lowcore.user_asce, 7, 7); + else + __ctl_load(S390_lowcore.kernel_asce, 7, 7); + set_cpu_flag(CIF_ASCE_SECONDARY); + } +} +EXPORT_SYMBOL(set_fs); + +mm_segment_t enable_sacf_uaccess(void) +{ + mm_segment_t old_fs; + unsigned long asce, cr; + + old_fs = current->thread.mm_segment; + if (old_fs & 1) + return old_fs; + current->thread.mm_segment |= 1; + asce = S390_lowcore.kernel_asce; + if (likely(old_fs == USER_DS)) { + __ctl_store(cr, 1, 1); + if (cr != S390_lowcore.kernel_asce) { + __ctl_load(S390_lowcore.kernel_asce, 1, 1); + set_cpu_flag(CIF_ASCE_PRIMARY); + } + asce = S390_lowcore.user_asce; + } + __ctl_store(cr, 7, 7); + if (cr != asce) { + __ctl_load(asce, 7, 7); + set_cpu_flag(CIF_ASCE_SECONDARY); + } + return old_fs; +} +EXPORT_SYMBOL(enable_sacf_uaccess); + +void disable_sacf_uaccess(mm_segment_t old_fs) +{ + if (old_fs == USER_DS && test_facility(27)) { + __ctl_load(S390_lowcore.user_asce, 1, 1); + clear_cpu_flag(CIF_ASCE_PRIMARY); + } + current->thread.mm_segment = old_fs; +} +EXPORT_SYMBOL(disable_sacf_uaccess); + static inline unsigned long copy_from_user_mvcos(void *x, const void __user *ptr, unsigned long size) { - register unsigned long reg0 asm("0") = 0x81UL; + register unsigned long reg0 asm("0") = 0x01UL; unsigned long tmp1, tmp2; tmp1 = -4096UL; @@ -74,8 +131,9 @@ static inline unsigned long copy_from_user_mvcp(void *x, const void __user *ptr, unsigned long size) { unsigned long tmp1, tmp2; + mm_segment_t old_fs; - load_kernel_asce(); + old_fs = enable_sacf_uaccess(); tmp1 = -256UL; asm volatile( " sacf 0\n" @@ -102,6 +160,7 @@ static inline unsigned long copy_from_user_mvcp(void *x, const void __user *ptr, EX_TABLE(7b,3b) EX_TABLE(8b,3b) EX_TABLE(9b,6b) : "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2) : : "cc", "memory"); + disable_sacf_uaccess(old_fs); return size; } @@ -116,7 +175,7 @@ EXPORT_SYMBOL(raw_copy_from_user); static inline unsigned long copy_to_user_mvcos(void __user *ptr, const void *x, unsigned long size) { - register unsigned long reg0 asm("0") = 0x810000UL; + register unsigned long reg0 asm("0") = 0x010000UL; unsigned long tmp1, tmp2; tmp1 = -4096UL; @@ -147,8 +206,9 @@ static inline unsigned long copy_to_user_mvcs(void __user *ptr, const void *x, unsigned long size) { unsigned long tmp1, tmp2; + mm_segment_t old_fs; - load_kernel_asce(); + old_fs = enable_sacf_uaccess(); tmp1 = -256UL; asm volatile( " sacf 0\n" @@ -175,6 +235,7 @@ static inline unsigned long copy_to_user_mvcs(void __user *ptr, const void *x, EX_TABLE(7b,3b) EX_TABLE(8b,3b) EX_TABLE(9b,6b) : "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2) : : "cc", "memory"); + disable_sacf_uaccess(old_fs); return size; } @@ -189,7 +250,7 @@ EXPORT_SYMBOL(raw_copy_to_user); static inline unsigned long copy_in_user_mvcos(void __user *to, const void __user *from, unsigned long size) { - register unsigned long reg0 asm("0") = 0x810081UL; + register unsigned long reg0 asm("0") = 0x010001UL; unsigned long tmp1, tmp2; tmp1 = -4096UL; @@ -212,9 +273,10 @@ static inline unsigned long copy_in_user_mvcos(void __user *to, const void __use static inline unsigned long copy_in_user_mvc(void __user *to, const void __user *from, unsigned long size) { + mm_segment_t old_fs; unsigned long tmp1; - load_kernel_asce(); + old_fs = enable_sacf_uaccess(); asm volatile( " sacf 256\n" " aghi %0,-1\n" @@ -238,6 +300,7 @@ static inline unsigned long copy_in_user_mvc(void __user *to, const void __user EX_TABLE(1b,6b) EX_TABLE(2b,0b) EX_TABLE(4b,0b) : "+a" (size), "+a" (to), "+a" (from), "=a" (tmp1) : : "cc", "memory"); + disable_sacf_uaccess(old_fs); return size; } @@ -251,7 +314,7 @@ EXPORT_SYMBOL(raw_copy_in_user); static inline unsigned long clear_user_mvcos(void __user *to, unsigned long size) { - register unsigned long reg0 asm("0") = 0x810000UL; + register unsigned long reg0 asm("0") = 0x010000UL; unsigned long tmp1, tmp2; tmp1 = -4096UL; @@ -279,9 +342,10 @@ static inline unsigned long clear_user_mvcos(void __user *to, unsigned long size static inline unsigned long clear_user_xc(void __user *to, unsigned long size) { + mm_segment_t old_fs; unsigned long tmp1, tmp2; - load_kernel_asce(); + old_fs = enable_sacf_uaccess(); asm volatile( " sacf 256\n" " aghi %0,-1\n" @@ -310,6 +374,7 @@ static inline unsigned long clear_user_xc(void __user *to, unsigned long size) EX_TABLE(1b,6b) EX_TABLE(2b,0b) EX_TABLE(4b,0b) : "+a" (size), "+a" (to), "=a" (tmp1), "=a" (tmp2) : : "cc", "memory"); + disable_sacf_uaccess(old_fs); return size; } @@ -345,10 +410,15 @@ static inline unsigned long strnlen_user_srst(const char __user *src, unsigned long __strnlen_user(const char __user *src, unsigned long size) { + mm_segment_t old_fs; + unsigned long len; + if (unlikely(!size)) return 0; - load_kernel_asce(); - return strnlen_user_srst(src, size); + old_fs = enable_sacf_uaccess(); + len = strnlen_user_srst(src, size); + disable_sacf_uaccess(old_fs); + return len; } EXPORT_SYMBOL(__strnlen_user); diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index 242b78c0a9ec..93faeca52284 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -50,6 +50,13 @@ #define VM_FAULT_SIGNAL 0x080000 #define VM_FAULT_PFAULT 0x100000 +enum fault_type { + KERNEL_FAULT, + USER_FAULT, + VDSO_FAULT, + GMAP_FAULT, +}; + static unsigned long store_indication __read_mostly; static int __init fault_init(void) @@ -99,27 +106,34 @@ void bust_spinlocks(int yes) } /* - * Returns the address space associated with the fault. - * Returns 0 for kernel space and 1 for user space. + * Find out which address space caused the exception. + * Access register mode is impossible, ignore space == 3. */ -static inline int user_space_fault(struct pt_regs *regs) +static inline enum fault_type get_fault_type(struct pt_regs *regs) { unsigned long trans_exc_code; - /* - * The lowest two bits of the translation exception - * identification indicate which paging table was used. - */ trans_exc_code = regs->int_parm_long & 3; - if (trans_exc_code == 3) /* home space -> kernel */ - return 0; - if (user_mode(regs)) - return 1; - if (trans_exc_code == 2) /* secondary space -> set_fs */ - return current->thread.mm_segment.ar4; - if (current->flags & PF_VCPU) - return 1; - return 0; + if (likely(trans_exc_code == 0)) { + /* primary space exception */ + if (IS_ENABLED(CONFIG_PGSTE) && + test_pt_regs_flag(regs, PIF_GUEST_FAULT)) + return GMAP_FAULT; + if (current->thread.mm_segment == USER_DS) + return USER_FAULT; + return KERNEL_FAULT; + } + if (trans_exc_code == 2) { + /* secondary space exception */ + if (current->thread.mm_segment & 1) { + if (current->thread.mm_segment == USER_DS_SACF) + return USER_FAULT; + return KERNEL_FAULT; + } + return VDSO_FAULT; + } + /* home space exception -> access via kernel ASCE */ + return KERNEL_FAULT; } static int bad_address(void *p) @@ -204,20 +218,23 @@ static void dump_fault_info(struct pt_regs *regs) break; } pr_cont("mode while using "); - if (!user_space_fault(regs)) { - asce = S390_lowcore.kernel_asce; - pr_cont("kernel "); - } -#ifdef CONFIG_PGSTE - else if ((current->flags & PF_VCPU) && S390_lowcore.gmap) { - struct gmap *gmap = (struct gmap *)S390_lowcore.gmap; - asce = gmap->asce; - pr_cont("gmap "); - } -#endif - else { + switch (get_fault_type(regs)) { + case USER_FAULT: asce = S390_lowcore.user_asce; pr_cont("user "); + break; + case VDSO_FAULT: + asce = S390_lowcore.vdso_asce; + pr_cont("vdso "); + break; + case GMAP_FAULT: + asce = ((struct gmap *) S390_lowcore.gmap)->asce; + pr_cont("gmap "); + break; + case KERNEL_FAULT: + asce = S390_lowcore.kernel_asce; + pr_cont("kernel "); + break; } pr_cont("ASCE.\n"); dump_pagetable(asce, regs->int_parm_long & __FAIL_ADDR_MASK); @@ -273,7 +290,7 @@ static noinline void do_no_context(struct pt_regs *regs) * Oops. The kernel tried to access some bad page. We'll have to * terminate things with extreme prejudice. */ - if (!user_space_fault(regs)) + if (get_fault_type(regs) == KERNEL_FAULT) printk(KERN_ALERT "Unable to handle kernel pointer dereference" " in virtual kernel address space\n"); else @@ -395,12 +412,11 @@ static noinline void do_fault_error(struct pt_regs *regs, int access, int fault) */ static inline int do_exception(struct pt_regs *regs, int access) { -#ifdef CONFIG_PGSTE struct gmap *gmap; -#endif struct task_struct *tsk; struct mm_struct *mm; struct vm_area_struct *vma; + enum fault_type type; unsigned long trans_exc_code; unsigned long address; unsigned int flags; @@ -425,8 +441,19 @@ static inline int do_exception(struct pt_regs *regs, int access) * user context. */ fault = VM_FAULT_BADCONTEXT; - if (unlikely(!user_space_fault(regs) || faulthandler_disabled() || !mm)) + type = get_fault_type(regs); + switch (type) { + case KERNEL_FAULT: + goto out; + case VDSO_FAULT: + fault = VM_FAULT_BADMAP; goto out; + case USER_FAULT: + case GMAP_FAULT: + if (faulthandler_disabled() || !mm) + goto out; + break; + } address = trans_exc_code & __FAIL_ADDR_MASK; perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address); @@ -437,10 +464,9 @@ static inline int do_exception(struct pt_regs *regs, int access) flags |= FAULT_FLAG_WRITE; down_read(&mm->mmap_sem); -#ifdef CONFIG_PGSTE - gmap = (current->flags & PF_VCPU) ? - (struct gmap *) S390_lowcore.gmap : NULL; - if (gmap) { + gmap = NULL; + if (IS_ENABLED(CONFIG_PGSTE) && type == GMAP_FAULT) { + gmap = (struct gmap *) S390_lowcore.gmap; current->thread.gmap_addr = address; current->thread.gmap_write_flag = !!(flags & FAULT_FLAG_WRITE); current->thread.gmap_int_code = regs->int_code & 0xffff; @@ -452,7 +478,6 @@ static inline int do_exception(struct pt_regs *regs, int access) if (gmap->pfault_enabled) flags |= FAULT_FLAG_RETRY_NOWAIT; } -#endif retry: fault = VM_FAULT_BADMAP; @@ -507,15 +532,14 @@ retry: regs, address); } if (fault & VM_FAULT_RETRY) { -#ifdef CONFIG_PGSTE - if (gmap && (flags & FAULT_FLAG_RETRY_NOWAIT)) { + if (IS_ENABLED(CONFIG_PGSTE) && gmap && + (flags & FAULT_FLAG_RETRY_NOWAIT)) { /* FAULT_FLAG_RETRY_NOWAIT has been set, * mmap_sem has not been released */ current->thread.gmap_pfault = 1; fault = VM_FAULT_PFAULT; goto out_up; } -#endif /* Clear FAULT_FLAG_ALLOW_RETRY to avoid any risk * of starvation. */ flags &= ~(FAULT_FLAG_ALLOW_RETRY | @@ -525,8 +549,7 @@ retry: goto retry; } } -#ifdef CONFIG_PGSTE - if (gmap) { + if (IS_ENABLED(CONFIG_PGSTE) && gmap) { address = __gmap_link(gmap, current->thread.gmap_addr, address); if (address == -EFAULT) { @@ -538,7 +561,6 @@ retry: goto out_up; } } -#endif fault = 0; out_up: up_read(&mm->mmap_sem); @@ -706,7 +728,7 @@ static void pfault_interrupt(struct ext_code ext_code, return; inc_irq_stat(IRQEXT_PFL); /* Get the token (= pid of the affected task). */ - pid = param64 & LPP_PFAULT_PID_MASK; + pid = param64 & LPP_PID_MASK; rcu_read_lock(); tsk = find_task_by_pid_ns(pid, &init_pid_ns); if (tsk) diff --git a/arch/s390/mm/gmap.c b/arch/s390/mm/gmap.c index 2f66290c9b92..b2c140193b0a 100644 --- a/arch/s390/mm/gmap.c +++ b/arch/s390/mm/gmap.c @@ -1187,12 +1187,11 @@ static void gmap_unshadow_pgt(struct gmap *sg, unsigned long raddr) static void __gmap_unshadow_sgt(struct gmap *sg, unsigned long raddr, unsigned long *sgt) { - unsigned long asce, *pgt; + unsigned long *pgt; struct page *page; int i; BUG_ON(!gmap_is_shadow(sg)); - asce = (unsigned long) sgt | _ASCE_TYPE_SEGMENT; for (i = 0; i < _CRST_ENTRIES; i++, raddr += _SEGMENT_SIZE) { if (!(sgt[i] & _SEGMENT_ENTRY_ORIGIN)) continue; @@ -1245,12 +1244,11 @@ static void gmap_unshadow_sgt(struct gmap *sg, unsigned long raddr) static void __gmap_unshadow_r3t(struct gmap *sg, unsigned long raddr, unsigned long *r3t) { - unsigned long asce, *sgt; + unsigned long *sgt; struct page *page; int i; BUG_ON(!gmap_is_shadow(sg)); - asce = (unsigned long) r3t | _ASCE_TYPE_REGION3; for (i = 0; i < _CRST_ENTRIES; i++, raddr += _REGION3_SIZE) { if (!(r3t[i] & _REGION_ENTRY_ORIGIN)) continue; @@ -1303,12 +1301,11 @@ static void gmap_unshadow_r3t(struct gmap *sg, unsigned long raddr) static void __gmap_unshadow_r2t(struct gmap *sg, unsigned long raddr, unsigned long *r2t) { - unsigned long asce, *r3t; + unsigned long *r3t; struct page *page; int i; BUG_ON(!gmap_is_shadow(sg)); - asce = (unsigned long) r2t | _ASCE_TYPE_REGION2; for (i = 0; i < _CRST_ENTRIES; i++, raddr += _REGION2_SIZE) { if (!(r2t[i] & _REGION_ENTRY_ORIGIN)) continue; diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c index 817c9e16e83e..671535e64aba 100644 --- a/arch/s390/mm/init.c +++ b/arch/s390/mm/init.c @@ -95,6 +95,7 @@ void __init paging_init(void) } init_mm.context.asce = (__pa(init_mm.pgd) & PAGE_MASK) | asce_bits; S390_lowcore.kernel_asce = init_mm.context.asce; + S390_lowcore.user_asce = S390_lowcore.kernel_asce; crst_table_init((unsigned long *) init_mm.pgd, pgd_type); vmem_map_init(); diff --git a/arch/s390/mm/pgalloc.c b/arch/s390/mm/pgalloc.c index 4ad4c4f77b4d..434a9564917b 100644 --- a/arch/s390/mm/pgalloc.c +++ b/arch/s390/mm/pgalloc.c @@ -71,10 +71,8 @@ static void __crst_table_upgrade(void *arg) { struct mm_struct *mm = arg; - if (current->active_mm == mm) { - clear_user_asce(); + if (current->active_mm == mm) set_user_asce(mm); - } __tlb_flush_local(); } diff --git a/arch/s390/tools/Makefile b/arch/s390/tools/Makefile index 2ebf2872cc16..2e70e25de07a 100644 --- a/arch/s390/tools/Makefile +++ b/arch/s390/tools/Makefile @@ -21,4 +21,4 @@ include/generated/facilities.h: $(obj)/gen_facilities FORCE $(call filechk,facilities.h) include/generated/dis.h: $(obj)/gen_opcode_table FORCE - $(call filechk,dis.h,__FUN) + $(call filechk,dis.h) diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 4e83f950713e..987a57502909 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -96,9 +96,6 @@ config ARCH_PROC_KCORE_TEXT config CPU_BIG_ENDIAN def_bool y -config CPU_BIG_ENDIAN - def_bool y - config ARCH_ATU bool default y if SPARC64 diff --git a/arch/sparc/include/asm/compat.h b/arch/sparc/include/asm/compat.h index 977c3f280ba1..fa38c78de0f0 100644 --- a/arch/sparc/include/asm/compat.h +++ b/arch/sparc/include/asm/compat.h @@ -209,7 +209,6 @@ typedef struct compat_siginfo { } compat_siginfo_t; #define COMPAT_OFF_T_MAX 0x7fffffff -#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL /* * A pointer passed in from user mode. This should not diff --git a/arch/sparc/kernel/signal32.c b/arch/sparc/kernel/signal32.c index 5c572de64c74..54a6159b9cd8 100644 --- a/arch/sparc/kernel/signal32.c +++ b/arch/sparc/kernel/signal32.c @@ -249,7 +249,6 @@ asmlinkage void do_rt_sigreturn32(struct pt_regs *regs) compat_uptr_t fpu_save; compat_uptr_t rwin_save; sigset_t set; - compat_sigset_t seta; int err, i; /* Always make any pending restarted system calls return -EINTR */ @@ -312,7 +311,7 @@ asmlinkage void do_rt_sigreturn32(struct pt_regs *regs) err |= __get_user(fpu_save, &sf->fpu_save); if (!err && fpu_save) err |= restore_fpu_state(regs, compat_ptr(fpu_save)); - err |= copy_from_user(&seta, &sf->mask, sizeof(compat_sigset_t)); + err |= get_compat_sigset(&set, &sf->mask); err |= compat_restore_altstack(&sf->stack); if (err) goto segv; @@ -323,7 +322,6 @@ asmlinkage void do_rt_sigreturn32(struct pt_regs *regs) goto segv; } - set.sig[0] = seta.sig[0] + (((long)seta.sig[1]) << 32); set_current_blocked(&set); return; segv: @@ -555,7 +553,6 @@ static int setup_rt_frame32(struct ksignal *ksig, struct pt_regs *regs, void __user *tail; int sigframe_size; u32 psr; - compat_sigset_t seta; /* 1. Make sure everything is clean */ synchronize_user_stack(); @@ -625,9 +622,7 @@ static int setup_rt_frame32(struct ksignal *ksig, struct pt_regs *regs, /* Setup sigaltstack */ err |= __compat_save_altstack(&sf->stack, regs->u_regs[UREG_FP]); - seta.sig[1] = (oldset->sig[0] >> 32); - seta.sig[0] = oldset->sig[0]; - err |= __copy_to_user(&sf->mask, &seta, sizeof(compat_sigset_t)); + err |= put_compat_sigset(&sf->mask, oldset, sizeof(compat_sigset_t)); if (!wsaved) { err |= copy_in_user((u32 __user *)sf, diff --git a/arch/sparc/kernel/sys_sparc32.c b/arch/sparc/kernel/sys_sparc32.c index b4e1478413a1..6d964bdefbaa 100644 --- a/arch/sparc/kernel/sys_sparc32.c +++ b/arch/sparc/kernel/sys_sparc32.c @@ -160,7 +160,6 @@ COMPAT_SYSCALL_DEFINE5(rt_sigaction, int, sig, { struct k_sigaction new_ka, old_ka; int ret; - compat_sigset_t set32; /* XXX: Don't preclude handling different sized sigset_t's. */ if (sigsetsize != sizeof(compat_sigset_t)) @@ -172,8 +171,7 @@ COMPAT_SYSCALL_DEFINE5(rt_sigaction, int, sig, new_ka.ka_restorer = restorer; ret = get_user(u_handler, &act->sa_handler); new_ka.sa.sa_handler = compat_ptr(u_handler); - ret |= copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t)); - sigset_from_compat(&new_ka.sa.sa_mask, &set32); + ret |= get_compat_sigset(&new_ka.sa.sa_mask, &act->sa_mask); ret |= get_user(new_ka.sa.sa_flags, &act->sa_flags); ret |= get_user(u_restorer, &act->sa_restorer); new_ka.sa.sa_restorer = compat_ptr(u_restorer); @@ -184,9 +182,9 @@ COMPAT_SYSCALL_DEFINE5(rt_sigaction, int, sig, ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); if (!ret && oact) { - sigset_to_compat(&set32, &old_ka.sa.sa_mask); ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler); - ret |= copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t)); + ret |= put_compat_sigset(&oact->sa_mask, &old_ka.sa.sa_mask, + sizeof(oact->sa_mask)); ret |= put_user(old_ka.sa.sa_flags, &oact->sa_flags); ret |= put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer); if (ret) diff --git a/arch/tile/include/asm/compat.h b/arch/tile/include/asm/compat.h index c14e36f008c8..62a7b83025dd 100644 --- a/arch/tile/include/asm/compat.h +++ b/arch/tile/include/asm/compat.h @@ -173,7 +173,6 @@ typedef struct compat_siginfo { } compat_siginfo_t; #define COMPAT_OFF_T_MAX 0x7fffffff -#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL struct compat_ipc64_perm { compat_key_t key; diff --git a/arch/x86/include/asm/compat.h b/arch/x86/include/asm/compat.h index a600a6cda9ec..2cbd75dd2fd3 100644 --- a/arch/x86/include/asm/compat.h +++ b/arch/x86/include/asm/compat.h @@ -210,7 +210,6 @@ typedef struct compat_siginfo { } compat_siginfo_t; #define COMPAT_OFF_T_MAX 0x7fffffff -#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL struct compat_ipc64_perm { compat_key_t key; diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile index 90cb82dbba57..570e8bb1f386 100644 --- a/arch/x86/kernel/cpu/Makefile +++ b/arch/x86/kernel/cpu/Makefile @@ -22,7 +22,7 @@ obj-y += common.o obj-y += rdrand.o obj-y += match.o obj-y += bugs.o -obj-$(CONFIG_CPU_FREQ) += aperfmperf.o +obj-y += aperfmperf.o obj-y += cpuid-deps.o obj-$(CONFIG_PROC_FS) += proc.o diff --git a/arch/x86/kernel/cpu/aperfmperf.c b/arch/x86/kernel/cpu/aperfmperf.c index 957813e0180d..7eba34df54c3 100644 --- a/arch/x86/kernel/cpu/aperfmperf.c +++ b/arch/x86/kernel/cpu/aperfmperf.c @@ -14,6 +14,8 @@ #include <linux/percpu.h> #include <linux/smp.h> +#include "cpu.h" + struct aperfmperf_sample { unsigned int khz; ktime_t time; @@ -24,7 +26,7 @@ struct aperfmperf_sample { static DEFINE_PER_CPU(struct aperfmperf_sample, samples); #define APERFMPERF_CACHE_THRESHOLD_MS 10 -#define APERFMPERF_REFRESH_DELAY_MS 20 +#define APERFMPERF_REFRESH_DELAY_MS 10 #define APERFMPERF_STALE_THRESHOLD_MS 1000 /* @@ -38,8 +40,6 @@ static void aperfmperf_snapshot_khz(void *dummy) u64 aperf, aperf_delta; u64 mperf, mperf_delta; struct aperfmperf_sample *s = this_cpu_ptr(&samples); - ktime_t now = ktime_get(); - s64 time_delta = ktime_ms_delta(now, s->time); unsigned long flags; local_irq_save(flags); @@ -57,38 +57,68 @@ static void aperfmperf_snapshot_khz(void *dummy) if (mperf_delta == 0) return; - s->time = now; + s->time = ktime_get(); s->aperf = aperf; s->mperf = mperf; - - /* If the previous iteration was too long ago, discard it. */ - if (time_delta > APERFMPERF_STALE_THRESHOLD_MS) - s->khz = 0; - else - s->khz = div64_u64((cpu_khz * aperf_delta), mperf_delta); + s->khz = div64_u64((cpu_khz * aperf_delta), mperf_delta); } -unsigned int arch_freq_get_on_cpu(int cpu) +static bool aperfmperf_snapshot_cpu(int cpu, ktime_t now, bool wait) { - s64 time_delta; - unsigned int khz; + s64 time_delta = ktime_ms_delta(now, per_cpu(samples.time, cpu)); + + /* Don't bother re-computing within the cache threshold time. */ + if (time_delta < APERFMPERF_CACHE_THRESHOLD_MS) + return true; + + smp_call_function_single(cpu, aperfmperf_snapshot_khz, NULL, wait); + + /* Return false if the previous iteration was too long ago. */ + return time_delta <= APERFMPERF_STALE_THRESHOLD_MS; +} +unsigned int aperfmperf_get_khz(int cpu) +{ if (!cpu_khz) return 0; if (!static_cpu_has(X86_FEATURE_APERFMPERF)) return 0; - /* Don't bother re-computing within the cache threshold time. */ - time_delta = ktime_ms_delta(ktime_get(), per_cpu(samples.time, cpu)); - khz = per_cpu(samples.khz, cpu); - if (khz && time_delta < APERFMPERF_CACHE_THRESHOLD_MS) - return khz; + aperfmperf_snapshot_cpu(cpu, ktime_get(), true); + return per_cpu(samples.khz, cpu); +} - smp_call_function_single(cpu, aperfmperf_snapshot_khz, NULL, 1); - khz = per_cpu(samples.khz, cpu); - if (khz) - return khz; +void arch_freq_prepare_all(void) +{ + ktime_t now = ktime_get(); + bool wait = false; + int cpu; + + if (!cpu_khz) + return; + + if (!static_cpu_has(X86_FEATURE_APERFMPERF)) + return; + + for_each_online_cpu(cpu) + if (!aperfmperf_snapshot_cpu(cpu, now, false)) + wait = true; + + if (wait) + msleep(APERFMPERF_REFRESH_DELAY_MS); +} + +unsigned int arch_freq_get_on_cpu(int cpu) +{ + if (!cpu_khz) + return 0; + + if (!static_cpu_has(X86_FEATURE_APERFMPERF)) + return 0; + + if (aperfmperf_snapshot_cpu(cpu, ktime_get(), true)) + return per_cpu(samples.khz, cpu); msleep(APERFMPERF_REFRESH_DELAY_MS); smp_call_function_single(cpu, aperfmperf_snapshot_khz, NULL, 1); diff --git a/arch/x86/kernel/cpu/cpu.h b/arch/x86/kernel/cpu/cpu.h index f52a370b6c00..e806b11a99af 100644 --- a/arch/x86/kernel/cpu/cpu.h +++ b/arch/x86/kernel/cpu/cpu.h @@ -47,4 +47,7 @@ extern const struct cpu_dev *const __x86_cpu_dev_start[], extern void get_cpu_cap(struct cpuinfo_x86 *c); extern void cpu_detect_cache_sizes(struct cpuinfo_x86 *c); + +unsigned int aperfmperf_get_khz(int cpu); + #endif /* ARCH_X86_CPU_H */ diff --git a/arch/x86/kernel/cpu/proc.c b/arch/x86/kernel/cpu/proc.c index 6b7e17bf0b71..e7ecedafa1c8 100644 --- a/arch/x86/kernel/cpu/proc.c +++ b/arch/x86/kernel/cpu/proc.c @@ -5,6 +5,8 @@ #include <linux/seq_file.h> #include <linux/cpufreq.h> +#include "cpu.h" + /* * Get CPU information for use by the procfs. */ @@ -78,9 +80,11 @@ static int show_cpuinfo(struct seq_file *m, void *v) seq_printf(m, "microcode\t: 0x%x\n", c->microcode); if (cpu_has(c, X86_FEATURE_TSC)) { - unsigned int freq = cpufreq_quick_get(cpu); + unsigned int freq = aperfmperf_get_khz(cpu); if (!freq) + freq = cpufreq_quick_get(cpu); + if (!freq) freq = cpu_khz; seq_printf(m, "cpu MHz\t\t: %u.%03u\n", freq / 1000, (freq % 1000)); |