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-rw-r--r--arch/s390/Kconfig2
-rw-r--r--arch/s390/boot/compressed/head.S2
-rw-r--r--arch/s390/configs/default_defconfig6
-rw-r--r--arch/s390/configs/gcov_defconfig4
-rw-r--r--arch/s390/configs/performance_defconfig4
-rw-r--r--arch/s390/crypto/prng.c6
-rw-r--r--arch/s390/hypfs/inode.c24
-rw-r--r--arch/s390/include/asm/Kbuild4
-rw-r--r--arch/s390/include/asm/asm-offsets.h1
-rw-r--r--arch/s390/include/asm/atomic.h207
-rw-r--r--arch/s390/include/asm/atomic_ops.h130
-rw-r--r--arch/s390/include/asm/bitops.h62
-rw-r--r--arch/s390/include/asm/cpu_mf.h3
-rw-r--r--arch/s390/include/asm/elf.h6
-rw-r--r--arch/s390/include/asm/facilities_src.h82
-rw-r--r--arch/s390/include/asm/ipl.h2
-rw-r--r--arch/s390/include/asm/lowcore.h5
-rw-r--r--arch/s390/include/asm/pci_clp.h5
-rw-r--r--arch/s390/include/asm/pgalloc.h22
-rw-r--r--arch/s390/include/asm/preempt.h137
-rw-r--r--arch/s390/include/asm/processor.h6
-rw-r--r--arch/s390/include/asm/sclp.h10
-rw-r--r--arch/s390/include/asm/scsw.h6
-rw-r--r--arch/s390/include/asm/smp.h8
-rw-r--r--arch/s390/include/asm/string.h3
-rw-r--r--arch/s390/include/asm/sysinfo.h7
-rw-r--r--arch/s390/include/asm/thread_info.h24
-rw-r--r--arch/s390/include/asm/timex.h41
-rw-r--r--arch/s390/include/asm/topology.h28
-rw-r--r--arch/s390/include/asm/uaccess.h6
-rw-r--r--arch/s390/include/asm/vdso.h2
-rw-r--r--arch/s390/include/uapi/asm/Kbuild5
-rw-r--r--arch/s390/kernel/Makefile65
-rw-r--r--arch/s390/kernel/asm-offsets.c17
-rw-r--r--arch/s390/kernel/compat_signal.c4
-rw-r--r--arch/s390/kernel/early.c50
-rw-r--r--arch/s390/kernel/entry.S51
-rw-r--r--arch/s390/kernel/head.S2
-rw-r--r--arch/s390/kernel/head64.S7
-rw-r--r--arch/s390/kernel/ipl.c7
-rw-r--r--arch/s390/kernel/irq.c2
-rw-r--r--arch/s390/kernel/lgr.c5
-rw-r--r--arch/s390/kernel/perf_cpum_sf.c53
-rw-r--r--arch/s390/kernel/process.c6
-rw-r--r--arch/s390/kernel/ptrace.c14
-rw-r--r--arch/s390/kernel/setup.c22
-rw-r--r--arch/s390/kernel/signal.c14
-rw-r--r--arch/s390/kernel/smp.c32
-rw-r--r--arch/s390/kernel/swsusp.S2
-rw-r--r--arch/s390/kernel/sysinfo.c33
-rw-r--r--arch/s390/kernel/time.c191
-rw-r--r--arch/s390/kernel/topology.c53
-rw-r--r--arch/s390/kernel/vdso32/clock_gettime.S23
-rw-r--r--arch/s390/kernel/vdso32/gettimeofday.S23
-rw-r--r--arch/s390/kernel/vdso64/clock_gettime.S11
-rw-r--r--arch/s390/kernel/vdso64/gettimeofday.S11
-rw-r--r--arch/s390/kernel/vtime.c26
-rw-r--r--arch/s390/lib/mem.S39
-rw-r--r--arch/s390/mm/fault.c1
-rw-r--r--arch/s390/mm/vmem.c9
-rw-r--r--arch/s390/numa/mode_emu.c38
-rw-r--r--arch/s390/numa/toptree.c16
-rw-r--r--arch/s390/pci/pci.c8
-rw-r--r--arch/s390/pci/pci_clp.c3
-rw-r--r--arch/s390/pci/pci_debug.c2
-rw-r--r--arch/s390/pci/pci_dma.c36
-rw-r--r--arch/s390/tools/Makefile2
-rw-r--r--arch/s390/tools/gen_facilities.c76
68 files changed, 1069 insertions, 745 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 028f97be5bae..c6722112527d 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -136,6 +136,7 @@ config S390
select HAVE_CMPXCHG_LOCAL
select HAVE_DEBUG_KMEMLEAK
select HAVE_DMA_API_DEBUG
+ select HAVE_DMA_CONTIGUOUS
select HAVE_DYNAMIC_FTRACE
select HAVE_DYNAMIC_FTRACE_WITH_REGS
select HAVE_EFFICIENT_UNALIGNED_ACCESS
@@ -169,6 +170,7 @@ config S390
select OLD_SIGSUSPEND3
select SPARSE_IRQ
select SYSCTL_EXCEPTION_TRACE
+ select THREAD_INFO_IN_TASK
select TTY
select VIRT_CPU_ACCOUNTING
select ARCH_HAS_SCALED_CPUTIME
diff --git a/arch/s390/boot/compressed/head.S b/arch/s390/boot/compressed/head.S
index 28c4f96a2d9c..11f6254c561e 100644
--- a/arch/s390/boot/compressed/head.S
+++ b/arch/s390/boot/compressed/head.S
@@ -46,7 +46,7 @@ mover_end:
.align 8
.Lstack:
- .quad 0x8000 + (1<<(PAGE_SHIFT+THREAD_ORDER))
+ .quad 0x8000 + (1<<(PAGE_SHIFT+THREAD_SIZE_ORDER))
.Loffset:
.quad 0x11000
.Lmvsize:
diff --git a/arch/s390/configs/default_defconfig b/arch/s390/configs/default_defconfig
index 45968686f918..e659daffe368 100644
--- a/arch/s390/configs/default_defconfig
+++ b/arch/s390/configs/default_defconfig
@@ -66,6 +66,8 @@ CONFIG_TRANSPARENT_HUGEPAGE=y
CONFIG_CLEANCACHE=y
CONFIG_FRONTSWAP=y
CONFIG_CMA=y
+CONFIG_CMA_DEBUG=y
+CONFIG_CMA_DEBUGFS=y
CONFIG_MEM_SOFT_DIRTY=y
CONFIG_ZPOOL=m
CONFIG_ZBUD=m
@@ -366,6 +368,8 @@ CONFIG_BPF_JIT=y
CONFIG_NET_PKTGEN=m
CONFIG_NET_TCPPROBE=m
CONFIG_DEVTMPFS=y
+CONFIG_DMA_CMA=y
+CONFIG_CMA_SIZE_MBYTES=0
CONFIG_CONNECTOR=y
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_CRYPTOLOOP=m
@@ -438,7 +442,6 @@ CONFIG_TUN=m
CONFIG_VETH=m
CONFIG_VIRTIO_NET=m
CONFIG_NLMON=m
-CONFIG_VHOST_NET=m
# CONFIG_NET_VENDOR_ARC is not set
# CONFIG_NET_VENDOR_CHELSIO is not set
# CONFIG_NET_VENDOR_INTEL is not set
@@ -693,3 +696,4 @@ CONFIG_CMM=m
CONFIG_APPLDATA_BASE=y
CONFIG_KVM=m
CONFIG_KVM_S390_UCONTROL=y
+CONFIG_VHOST_NET=m
diff --git a/arch/s390/configs/gcov_defconfig b/arch/s390/configs/gcov_defconfig
index 1dd05e345c4d..95ceac50bc65 100644
--- a/arch/s390/configs/gcov_defconfig
+++ b/arch/s390/configs/gcov_defconfig
@@ -362,6 +362,8 @@ CONFIG_BPF_JIT=y
CONFIG_NET_PKTGEN=m
CONFIG_NET_TCPPROBE=m
CONFIG_DEVTMPFS=y
+CONFIG_DMA_CMA=y
+CONFIG_CMA_SIZE_MBYTES=0
CONFIG_CONNECTOR=y
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_CRYPTOLOOP=m
@@ -434,7 +436,6 @@ CONFIG_TUN=m
CONFIG_VETH=m
CONFIG_VIRTIO_NET=m
CONFIG_NLMON=m
-CONFIG_VHOST_NET=m
# CONFIG_NET_VENDOR_ARC is not set
# CONFIG_NET_VENDOR_CHELSIO is not set
# CONFIG_NET_VENDOR_INTEL is not set
@@ -633,3 +634,4 @@ CONFIG_CMM=m
CONFIG_APPLDATA_BASE=y
CONFIG_KVM=m
CONFIG_KVM_S390_UCONTROL=y
+CONFIG_VHOST_NET=m
diff --git a/arch/s390/configs/performance_defconfig b/arch/s390/configs/performance_defconfig
index 29d1178666f0..bc7b176f5795 100644
--- a/arch/s390/configs/performance_defconfig
+++ b/arch/s390/configs/performance_defconfig
@@ -362,6 +362,8 @@ CONFIG_BPF_JIT=y
CONFIG_NET_PKTGEN=m
CONFIG_NET_TCPPROBE=m
CONFIG_DEVTMPFS=y
+CONFIG_DMA_CMA=y
+CONFIG_CMA_SIZE_MBYTES=0
CONFIG_CONNECTOR=y
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_CRYPTOLOOP=m
@@ -434,7 +436,6 @@ CONFIG_TUN=m
CONFIG_VETH=m
CONFIG_VIRTIO_NET=m
CONFIG_NLMON=m
-CONFIG_VHOST_NET=m
# CONFIG_NET_VENDOR_ARC is not set
# CONFIG_NET_VENDOR_CHELSIO is not set
# CONFIG_NET_VENDOR_INTEL is not set
@@ -632,3 +633,4 @@ CONFIG_CMM=m
CONFIG_APPLDATA_BASE=y
CONFIG_KVM=m
CONFIG_KVM_S390_UCONTROL=y
+CONFIG_VHOST_NET=m
diff --git a/arch/s390/crypto/prng.c b/arch/s390/crypto/prng.c
index 9cc050f9536c..1113389d0a39 100644
--- a/arch/s390/crypto/prng.c
+++ b/arch/s390/crypto/prng.c
@@ -507,8 +507,10 @@ static ssize_t prng_tdes_read(struct file *file, char __user *ubuf,
prng_data->prngws.byte_counter += n;
prng_data->prngws.reseed_counter += n;
- if (copy_to_user(ubuf, prng_data->buf, chunk))
- return -EFAULT;
+ if (copy_to_user(ubuf, prng_data->buf, chunk)) {
+ ret = -EFAULT;
+ break;
+ }
nbytes -= chunk;
ret += chunk;
diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
index 09bccb224d03..cf8a2d92467f 100644
--- a/arch/s390/hypfs/inode.c
+++ b/arch/s390/hypfs/inode.c
@@ -3,6 +3,7 @@
*
* Copyright IBM Corp. 2006, 2008
* Author(s): Michael Holzheu <holzheu@de.ibm.com>
+ * License: GPL
*/
#define KMSG_COMPONENT "hypfs"
@@ -18,7 +19,8 @@
#include <linux/time.h>
#include <linux/parser.h>
#include <linux/sysfs.h>
-#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kobject.h>
#include <linux/seq_file.h>
#include <linux/mount.h>
#include <linux/uio.h>
@@ -443,7 +445,6 @@ static struct file_system_type hypfs_type = {
.mount = hypfs_mount,
.kill_sb = hypfs_kill_super
};
-MODULE_ALIAS_FS("s390_hypfs");
static const struct super_operations hypfs_s_ops = {
.statfs = simple_statfs,
@@ -497,21 +498,4 @@ fail_dbfs_exit:
pr_err("Initialization of hypfs failed with rc=%i\n", rc);
return rc;
}
-
-static void __exit hypfs_exit(void)
-{
- unregister_filesystem(&hypfs_type);
- sysfs_remove_mount_point(hypervisor_kobj, "s390");
- hypfs_diag0c_exit();
- hypfs_sprp_exit();
- hypfs_vm_exit();
- hypfs_diag_exit();
- hypfs_dbfs_exit();
-}
-
-module_init(hypfs_init)
-module_exit(hypfs_exit)
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Michael Holzheu <holzheu@de.ibm.com>");
-MODULE_DESCRIPTION("s390 Hypervisor Filesystem");
+device_initcall(hypfs_init)
diff --git a/arch/s390/include/asm/Kbuild b/arch/s390/include/asm/Kbuild
index 20f196b82a6e..8aea32fe8bd2 100644
--- a/arch/s390/include/asm/Kbuild
+++ b/arch/s390/include/asm/Kbuild
@@ -1,6 +1,6 @@
-
-
+generic-y += asm-offsets.h
generic-y += clkdev.h
+generic-y += dma-contiguous.h
generic-y += export.h
generic-y += irq_work.h
generic-y += mcs_spinlock.h
diff --git a/arch/s390/include/asm/asm-offsets.h b/arch/s390/include/asm/asm-offsets.h
deleted file mode 100644
index d370ee36a182..000000000000
--- a/arch/s390/include/asm/asm-offsets.h
+++ /dev/null
@@ -1 +0,0 @@
-#include <generated/asm-offsets.h>
diff --git a/arch/s390/include/asm/atomic.h b/arch/s390/include/asm/atomic.h
index d28cc2f5b7b2..f7f69dfd2db2 100644
--- a/arch/s390/include/asm/atomic.h
+++ b/arch/s390/include/asm/atomic.h
@@ -1,13 +1,8 @@
/*
- * Copyright IBM Corp. 1999, 2009
+ * Copyright IBM Corp. 1999, 2016
* Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>,
* Denis Joseph Barrow,
- * Arnd Bergmann <arndb@de.ibm.com>,
- *
- * Atomic operations that C can't guarantee us.
- * Useful for resource counting etc.
- * s390 uses 'Compare And Swap' for atomicity in SMP environment.
- *
+ * Arnd Bergmann,
*/
#ifndef __ARCH_S390_ATOMIC__
@@ -15,62 +10,12 @@
#include <linux/compiler.h>
#include <linux/types.h>
+#include <asm/atomic_ops.h>
#include <asm/barrier.h>
#include <asm/cmpxchg.h>
#define ATOMIC_INIT(i) { (i) }
-#define __ATOMIC_NO_BARRIER "\n"
-
-#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
-
-#define __ATOMIC_OR "lao"
-#define __ATOMIC_AND "lan"
-#define __ATOMIC_ADD "laa"
-#define __ATOMIC_XOR "lax"
-#define __ATOMIC_BARRIER "bcr 14,0\n"
-
-#define __ATOMIC_LOOP(ptr, op_val, op_string, __barrier) \
-({ \
- int old_val; \
- \
- typecheck(atomic_t *, ptr); \
- asm volatile( \
- op_string " %0,%2,%1\n" \
- __barrier \
- : "=d" (old_val), "+Q" ((ptr)->counter) \
- : "d" (op_val) \
- : "cc", "memory"); \
- old_val; \
-})
-
-#else /* CONFIG_HAVE_MARCH_Z196_FEATURES */
-
-#define __ATOMIC_OR "or"
-#define __ATOMIC_AND "nr"
-#define __ATOMIC_ADD "ar"
-#define __ATOMIC_XOR "xr"
-#define __ATOMIC_BARRIER "\n"
-
-#define __ATOMIC_LOOP(ptr, op_val, op_string, __barrier) \
-({ \
- int old_val, new_val; \
- \
- typecheck(atomic_t *, ptr); \
- asm volatile( \
- " l %0,%2\n" \
- "0: lr %1,%0\n" \
- op_string " %1,%3\n" \
- " cs %0,%1,%2\n" \
- " jl 0b" \
- : "=&d" (old_val), "=&d" (new_val), "+Q" ((ptr)->counter)\
- : "d" (op_val) \
- : "cc", "memory"); \
- old_val; \
-})
-
-#endif /* CONFIG_HAVE_MARCH_Z196_FEATURES */
-
static inline int atomic_read(const atomic_t *v)
{
int c;
@@ -90,27 +35,23 @@ static inline void atomic_set(atomic_t *v, int i)
static inline int atomic_add_return(int i, atomic_t *v)
{
- return __ATOMIC_LOOP(v, i, __ATOMIC_ADD, __ATOMIC_BARRIER) + i;
+ return __atomic_add_barrier(i, &v->counter) + i;
}
static inline int atomic_fetch_add(int i, atomic_t *v)
{
- return __ATOMIC_LOOP(v, i, __ATOMIC_ADD, __ATOMIC_BARRIER);
+ return __atomic_add_barrier(i, &v->counter);
}
static inline void atomic_add(int i, atomic_t *v)
{
#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
if (__builtin_constant_p(i) && (i > -129) && (i < 128)) {
- asm volatile(
- "asi %0,%1\n"
- : "+Q" (v->counter)
- : "i" (i)
- : "cc", "memory");
+ __atomic_add_const(i, &v->counter);
return;
}
#endif
- __ATOMIC_LOOP(v, i, __ATOMIC_ADD, __ATOMIC_NO_BARRIER);
+ __atomic_add(i, &v->counter);
}
#define atomic_add_negative(_i, _v) (atomic_add_return(_i, _v) < 0)
@@ -125,19 +66,19 @@ static inline void atomic_add(int i, atomic_t *v)
#define atomic_dec_return(_v) atomic_sub_return(1, _v)
#define atomic_dec_and_test(_v) (atomic_sub_return(1, _v) == 0)
-#define ATOMIC_OPS(op, OP) \
+#define ATOMIC_OPS(op) \
static inline void atomic_##op(int i, atomic_t *v) \
{ \
- __ATOMIC_LOOP(v, i, __ATOMIC_##OP, __ATOMIC_NO_BARRIER); \
+ __atomic_##op(i, &v->counter); \
} \
static inline int atomic_fetch_##op(int i, atomic_t *v) \
{ \
- return __ATOMIC_LOOP(v, i, __ATOMIC_##OP, __ATOMIC_BARRIER); \
+ return __atomic_##op##_barrier(i, &v->counter); \
}
-ATOMIC_OPS(and, AND)
-ATOMIC_OPS(or, OR)
-ATOMIC_OPS(xor, XOR)
+ATOMIC_OPS(and)
+ATOMIC_OPS(or)
+ATOMIC_OPS(xor)
#undef ATOMIC_OPS
@@ -145,12 +86,7 @@ ATOMIC_OPS(xor, XOR)
static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
{
- asm volatile(
- " cs %0,%2,%1"
- : "+d" (old), "+Q" (v->counter)
- : "d" (new)
- : "cc", "memory");
- return old;
+ return __atomic_cmpxchg(&v->counter, old, new);
}
static inline int __atomic_add_unless(atomic_t *v, int a, int u)
@@ -168,65 +104,11 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
return c;
}
-
-#undef __ATOMIC_LOOP
-
#define ATOMIC64_INIT(i) { (i) }
-#define __ATOMIC64_NO_BARRIER "\n"
-
-#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
-
-#define __ATOMIC64_OR "laog"
-#define __ATOMIC64_AND "lang"
-#define __ATOMIC64_ADD "laag"
-#define __ATOMIC64_XOR "laxg"
-#define __ATOMIC64_BARRIER "bcr 14,0\n"
-
-#define __ATOMIC64_LOOP(ptr, op_val, op_string, __barrier) \
-({ \
- long long old_val; \
- \
- typecheck(atomic64_t *, ptr); \
- asm volatile( \
- op_string " %0,%2,%1\n" \
- __barrier \
- : "=d" (old_val), "+Q" ((ptr)->counter) \
- : "d" (op_val) \
- : "cc", "memory"); \
- old_val; \
-})
-
-#else /* CONFIG_HAVE_MARCH_Z196_FEATURES */
-
-#define __ATOMIC64_OR "ogr"
-#define __ATOMIC64_AND "ngr"
-#define __ATOMIC64_ADD "agr"
-#define __ATOMIC64_XOR "xgr"
-#define __ATOMIC64_BARRIER "\n"
-
-#define __ATOMIC64_LOOP(ptr, op_val, op_string, __barrier) \
-({ \
- long long old_val, new_val; \
- \
- typecheck(atomic64_t *, ptr); \
- asm volatile( \
- " lg %0,%2\n" \
- "0: lgr %1,%0\n" \
- op_string " %1,%3\n" \
- " csg %0,%1,%2\n" \
- " jl 0b" \
- : "=&d" (old_val), "=&d" (new_val), "+Q" ((ptr)->counter)\
- : "d" (op_val) \
- : "cc", "memory"); \
- old_val; \
-})
-
-#endif /* CONFIG_HAVE_MARCH_Z196_FEATURES */
-
-static inline long long atomic64_read(const atomic64_t *v)
+static inline long atomic64_read(const atomic64_t *v)
{
- long long c;
+ long c;
asm volatile(
" lg %0,%1\n"
@@ -234,71 +116,60 @@ static inline long long atomic64_read(const atomic64_t *v)
return c;
}
-static inline void atomic64_set(atomic64_t *v, long long i)
+static inline void atomic64_set(atomic64_t *v, long i)
{
asm volatile(
" stg %1,%0\n"
: "=Q" (v->counter) : "d" (i));
}
-static inline long long atomic64_add_return(long long i, atomic64_t *v)
+static inline long atomic64_add_return(long i, atomic64_t *v)
{
- return __ATOMIC64_LOOP(v, i, __ATOMIC64_ADD, __ATOMIC64_BARRIER) + i;
+ return __atomic64_add_barrier(i, &v->counter) + i;
}
-static inline long long atomic64_fetch_add(long long i, atomic64_t *v)
+static inline long atomic64_fetch_add(long i, atomic64_t *v)
{
- return __ATOMIC64_LOOP(v, i, __ATOMIC64_ADD, __ATOMIC64_BARRIER);
+ return __atomic64_add_barrier(i, &v->counter);
}
-static inline void atomic64_add(long long i, atomic64_t *v)
+static inline void atomic64_add(long i, atomic64_t *v)
{
#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
if (__builtin_constant_p(i) && (i > -129) && (i < 128)) {
- asm volatile(
- "agsi %0,%1\n"
- : "+Q" (v->counter)
- : "i" (i)
- : "cc", "memory");
+ __atomic64_add_const(i, &v->counter);
return;
}
#endif
- __ATOMIC64_LOOP(v, i, __ATOMIC64_ADD, __ATOMIC64_NO_BARRIER);
+ __atomic64_add(i, &v->counter);
}
#define atomic64_xchg(v, new) (xchg(&((v)->counter), new))
-static inline long long atomic64_cmpxchg(atomic64_t *v,
- long long old, long long new)
+static inline long atomic64_cmpxchg(atomic64_t *v, long old, long new)
{
- asm volatile(
- " csg %0,%2,%1"
- : "+d" (old), "+Q" (v->counter)
- : "d" (new)
- : "cc", "memory");
- return old;
+ return __atomic64_cmpxchg(&v->counter, old, new);
}
-#define ATOMIC64_OPS(op, OP) \
+#define ATOMIC64_OPS(op) \
static inline void atomic64_##op(long i, atomic64_t *v) \
{ \
- __ATOMIC64_LOOP(v, i, __ATOMIC64_##OP, __ATOMIC64_NO_BARRIER); \
+ __atomic64_##op(i, &v->counter); \
} \
static inline long atomic64_fetch_##op(long i, atomic64_t *v) \
{ \
- return __ATOMIC64_LOOP(v, i, __ATOMIC64_##OP, __ATOMIC64_BARRIER); \
+ return __atomic64_##op##_barrier(i, &v->counter); \
}
-ATOMIC64_OPS(and, AND)
-ATOMIC64_OPS(or, OR)
-ATOMIC64_OPS(xor, XOR)
+ATOMIC64_OPS(and)
+ATOMIC64_OPS(or)
+ATOMIC64_OPS(xor)
#undef ATOMIC64_OPS
-#undef __ATOMIC64_LOOP
-static inline int atomic64_add_unless(atomic64_t *v, long long i, long long u)
+static inline int atomic64_add_unless(atomic64_t *v, long i, long u)
{
- long long c, old;
+ long c, old;
c = atomic64_read(v);
for (;;) {
@@ -312,9 +183,9 @@ static inline int atomic64_add_unless(atomic64_t *v, long long i, long long u)
return c != u;
}
-static inline long long atomic64_dec_if_positive(atomic64_t *v)
+static inline long atomic64_dec_if_positive(atomic64_t *v)
{
- long long c, old, dec;
+ long c, old, dec;
c = atomic64_read(v);
for (;;) {
@@ -333,9 +204,9 @@ static inline long long atomic64_dec_if_positive(atomic64_t *v)
#define atomic64_inc(_v) atomic64_add(1, _v)
#define atomic64_inc_return(_v) atomic64_add_return(1, _v)
#define atomic64_inc_and_test(_v) (atomic64_add_return(1, _v) == 0)
-#define atomic64_sub_return(_i, _v) atomic64_add_return(-(long long)(_i), _v)
-#define atomic64_fetch_sub(_i, _v) atomic64_fetch_add(-(long long)(_i), _v)
-#define atomic64_sub(_i, _v) atomic64_add(-(long long)(_i), _v)
+#define atomic64_sub_return(_i, _v) atomic64_add_return(-(long)(_i), _v)
+#define atomic64_fetch_sub(_i, _v) atomic64_fetch_add(-(long)(_i), _v)
+#define atomic64_sub(_i, _v) atomic64_add(-(long)(_i), _v)
#define atomic64_sub_and_test(_i, _v) (atomic64_sub_return(_i, _v) == 0)
#define atomic64_dec(_v) atomic64_sub(1, _v)
#define atomic64_dec_return(_v) atomic64_sub_return(1, _v)
diff --git a/arch/s390/include/asm/atomic_ops.h b/arch/s390/include/asm/atomic_ops.h
new file mode 100644
index 000000000000..ac9e2b939d04
--- /dev/null
+++ b/arch/s390/include/asm/atomic_ops.h
@@ -0,0 +1,130 @@
+/*
+ * Low level function for atomic operations
+ *
+ * Copyright IBM Corp. 1999, 2016
+ */
+
+#ifndef __ARCH_S390_ATOMIC_OPS__
+#define __ARCH_S390_ATOMIC_OPS__
+
+#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
+
+#define __ATOMIC_OP(op_name, op_type, op_string, op_barrier) \
+static inline op_type op_name(op_type val, op_type *ptr) \
+{ \
+ op_type old; \
+ \
+ asm volatile( \
+ op_string " %[old],%[val],%[ptr]\n" \
+ op_barrier \
+ : [old] "=d" (old), [ptr] "+Q" (*ptr) \
+ : [val] "d" (val) : "cc", "memory"); \
+ return old; \
+} \
+
+#define __ATOMIC_OPS(op_name, op_type, op_string) \
+ __ATOMIC_OP(op_name, op_type, op_string, "\n") \
+ __ATOMIC_OP(op_name##_barrier, op_type, op_string, "bcr 14,0\n")
+
+__ATOMIC_OPS(__atomic_add, int, "laa")
+__ATOMIC_OPS(__atomic_and, int, "lan")
+__ATOMIC_OPS(__atomic_or, int, "lao")
+__ATOMIC_OPS(__atomic_xor, int, "lax")
+
+__ATOMIC_OPS(__atomic64_add, long, "laag")
+__ATOMIC_OPS(__atomic64_and, long, "lang")
+__ATOMIC_OPS(__atomic64_or, long, "laog")
+__ATOMIC_OPS(__atomic64_xor, long, "laxg")
+
+#undef __ATOMIC_OPS
+#undef __ATOMIC_OP
+
+static inline void __atomic_add_const(int val, int *ptr)
+{
+ asm volatile(
+ " asi %[ptr],%[val]\n"
+ : [ptr] "+Q" (*ptr) : [val] "i" (val) : "cc");
+}
+
+static inline void __atomic64_add_const(long val, long *ptr)
+{
+ asm volatile(
+ " agsi %[ptr],%[val]\n"
+ : [ptr] "+Q" (*ptr) : [val] "i" (val) : "cc");
+}
+
+#else /* CONFIG_HAVE_MARCH_Z196_FEATURES */
+
+#define __ATOMIC_OP(op_name, op_string) \
+static inline int op_name(int val, int *ptr) \
+{ \
+ int old, new; \
+ \
+ asm volatile( \
+ "0: lr %[new],%[old]\n" \
+ op_string " %[new],%[val]\n" \
+ " cs %[old],%[new],%[ptr]\n" \
+ " jl 0b" \
+ : [old] "=d" (old), [new] "=&d" (new), [ptr] "+Q" (*ptr)\
+ : [val] "d" (val), "0" (*ptr) : "cc", "memory"); \
+ return old; \
+}
+
+#define __ATOMIC_OPS(op_name, op_string) \
+ __ATOMIC_OP(op_name, op_string) \
+ __ATOMIC_OP(op_name##_barrier, op_string)
+
+__ATOMIC_OPS(__atomic_add, "ar")
+__ATOMIC_OPS(__atomic_and, "nr")
+__ATOMIC_OPS(__atomic_or, "or")
+__ATOMIC_OPS(__atomic_xor, "xr")
+
+#undef __ATOMIC_OPS
+
+#define __ATOMIC64_OP(op_name, op_string) \
+static inline long op_name(long val, long *ptr) \
+{ \
+ long old, new; \
+ \
+ asm volatile( \
+ "0: lgr %[new],%[old]\n" \
+ op_string " %[new],%[val]\n" \
+ " csg %[old],%[new],%[ptr]\n" \
+ " jl 0b" \
+ : [old] "=d" (old), [new] "=&d" (new), [ptr] "+Q" (*ptr)\
+ : [val] "d" (val), "0" (*ptr) : "cc", "memory"); \
+ return old; \
+}
+
+#define __ATOMIC64_OPS(op_name, op_string) \
+ __ATOMIC64_OP(op_name, op_string) \
+ __ATOMIC64_OP(op_name##_barrier, op_string)
+
+__ATOMIC64_OPS(__atomic64_add, "agr")
+__ATOMIC64_OPS(__atomic64_and, "ngr")
+__ATOMIC64_OPS(__atomic64_or, "ogr")
+__ATOMIC64_OPS(__atomic64_xor, "xgr")
+
+#undef __ATOMIC64_OPS
+
+#endif /* CONFIG_HAVE_MARCH_Z196_FEATURES */
+
+static inline int __atomic_cmpxchg(int *ptr, int old, int new)
+{
+ asm volatile(
+ " cs %[old],%[new],%[ptr]"
+ : [old] "+d" (old), [ptr] "+Q" (*ptr)
+ : [new] "d" (new) : "cc", "memory");
+ return old;
+}
+
+static inline long __atomic64_cmpxchg(long *ptr, long old, long new)
+{
+ asm volatile(
+ " csg %[old],%[new],%[ptr]"
+ : [old] "+d" (old), [ptr] "+Q" (*ptr)
+ : [new] "d" (new) : "cc", "memory");
+ return old;
+}
+
+#endif /* __ARCH_S390_ATOMIC_OPS__ */
diff --git a/arch/s390/include/asm/bitops.h b/arch/s390/include/asm/bitops.h
index 8043f10da6b5..d92047da5ccb 100644
--- a/arch/s390/include/asm/bitops.h
+++ b/arch/s390/include/asm/bitops.h
@@ -42,57 +42,9 @@
#include <linux/typecheck.h>
#include <linux/compiler.h>
+#include <asm/atomic_ops.h>
#include <asm/barrier.h>
-#define __BITOPS_NO_BARRIER "\n"
-
-#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
-
-#define __BITOPS_OR "laog"
-#define __BITOPS_AND "lang"
-#define __BITOPS_XOR "laxg"
-#define __BITOPS_BARRIER "bcr 14,0\n"
-
-#define __BITOPS_LOOP(__addr, __val, __op_string, __barrier) \
-({ \
- unsigned long __old; \
- \
- typecheck(unsigned long *, (__addr)); \
- asm volatile( \
- __op_string " %0,%2,%1\n" \
- __barrier \
- : "=d" (__old), "+Q" (*(__addr)) \
- : "d" (__val) \
- : "cc", "memory"); \
- __old; \
-})
-
-#else /* CONFIG_HAVE_MARCH_Z196_FEATURES */
-
-#define __BITOPS_OR "ogr"
-#define __BITOPS_AND "ngr"
-#define __BITOPS_XOR "xgr"
-#define __BITOPS_BARRIER "\n"
-
-#define __BITOPS_LOOP(__addr, __val, __op_string, __barrier) \
-({ \
- unsigned long __old, __new; \
- \
- typecheck(unsigned long *, (__addr)); \
- asm volatile( \
- " lg %0,%2\n" \
- "0: lgr %1,%0\n" \
- __op_string " %1,%3\n" \
- " csg %0,%1,%2\n" \
- " jl 0b" \
- : "=&d" (__old), "=&d" (__new), "+Q" (*(__addr))\
- : "d" (__val) \
- : "cc", "memory"); \
- __old; \
-})
-
-#endif /* CONFIG_HAVE_MARCH_Z196_FEATURES */
-
#define __BITOPS_WORDS(bits) (((bits) + BITS_PER_LONG - 1) / BITS_PER_LONG)
static inline unsigned long *
@@ -128,7 +80,7 @@ static inline void set_bit(unsigned long nr, volatile unsigned long *ptr)
}
#endif
mask = 1UL << (nr & (BITS_PER_LONG - 1));
- __BITOPS_LOOP(addr, mask, __BITOPS_OR, __BITOPS_NO_BARRIER);
+ __atomic64_or(mask, addr);
}
static inline void clear_bit(unsigned long nr, volatile unsigned long *ptr)
@@ -149,7 +101,7 @@ static inline void clear_bit(unsigned long nr, volatile unsigned long *ptr)
}
#endif
mask = ~(1UL << (nr & (BITS_PER_LONG - 1)));
- __BITOPS_LOOP(addr, mask, __BITOPS_AND, __BITOPS_NO_BARRIER);
+ __atomic64_and(mask, addr);
}
static inline void change_bit(unsigned long nr, volatile unsigned long *ptr)
@@ -170,7 +122,7 @@ static inline void change_bit(unsigned long nr, volatile unsigned long *ptr)
}
#endif
mask = 1UL << (nr & (BITS_PER_LONG - 1));
- __BITOPS_LOOP(addr, mask, __BITOPS_XOR, __BITOPS_NO_BARRIER);
+ __atomic64_xor(mask, addr);
}
static inline int
@@ -180,7 +132,7 @@ test_and_set_bit(unsigned long nr, volatile unsigned long *ptr)
unsigned long old, mask;
mask = 1UL << (nr & (BITS_PER_LONG - 1));
- old = __BITOPS_LOOP(addr, mask, __BITOPS_OR, __BITOPS_BARRIER);
+ old = __atomic64_or_barrier(mask, addr);
return (old & mask) != 0;
}
@@ -191,7 +143,7 @@ test_and_clear_bit(unsigned long nr, volatile unsigned long *ptr)
unsigned long old, mask;
mask = ~(1UL << (nr & (BITS_PER_LONG - 1)));
- old = __BITOPS_LOOP(addr, mask, __BITOPS_AND, __BITOPS_BARRIER);
+ old = __atomic64_and_barrier(mask, addr);
return (old & ~mask) != 0;
}
@@ -202,7 +154,7 @@ test_and_change_bit(unsigned long nr, volatile unsigned long *ptr)
unsigned long old, mask;
mask = 1UL << (nr & (BITS_PER_LONG - 1));
- old = __BITOPS_LOOP(addr, mask, __BITOPS_XOR, __BITOPS_BARRIER);
+ old = __atomic64_xor_barrier(mask, addr);
return (old & mask) != 0;
}
diff --git a/arch/s390/include/asm/cpu_mf.h b/arch/s390/include/asm/cpu_mf.h
index 03516476127b..b69d8bc231a5 100644
--- a/arch/s390/include/asm/cpu_mf.h
+++ b/arch/s390/include/asm/cpu_mf.h
@@ -104,7 +104,8 @@ struct hws_basic_entry {
unsigned int P:1; /* 28 PSW Problem state */
unsigned int AS:2; /* 29-30 PSW address-space control */
unsigned int I:1; /* 31 entry valid or invalid */
- unsigned int:16;
+ unsigned int CL:2; /* 32-33 Configuration Level */
+ unsigned int:14;
unsigned int prim_asn:16; /* primary ASN */
unsigned long long ia; /* Instruction Address */
unsigned long long gpp; /* Guest Program Parameter */
diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h
index 1736c7d3c94c..f4381e1fb19e 100644
--- a/arch/s390/include/asm/elf.h
+++ b/arch/s390/include/asm/elf.h
@@ -193,7 +193,7 @@ extern char elf_platform[];
do { \
set_personality(PER_LINUX | \
(current->personality & (~PER_MASK))); \
- current_thread_info()->sys_call_table = \
+ current->thread.sys_call_table = \
(unsigned long) &sys_call_table; \
} while (0)
#else /* CONFIG_COMPAT */
@@ -204,11 +204,11 @@ do { \
(current->personality & ~PER_MASK)); \
if ((ex).e_ident[EI_CLASS] == ELFCLASS32) { \
set_thread_flag(TIF_31BIT); \
- current_thread_info()->sys_call_table = \
+ current->thread.sys_call_table = \
(unsigned long) &sys_call_table_emu; \
} else { \
clear_thread_flag(TIF_31BIT); \
- current_thread_info()->sys_call_table = \
+ current->thread.sys_call_table = \
(unsigned long) &sys_call_table; \
} \
} while (0)
diff --git a/arch/s390/include/asm/facilities_src.h b/arch/s390/include/asm/facilities_src.h
deleted file mode 100644
index 3b758f66e48b..000000000000
--- a/arch/s390/include/asm/facilities_src.h
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
- * Copyright IBM Corp. 2015
- */
-
-#ifndef S390_GEN_FACILITIES_C
-#error "This file can only be included by gen_facilities.c"
-#endif
-
-#include <linux/kconfig.h>
-
-struct facility_def {
- char *name;
- int *bits;
-};
-
-static struct facility_def facility_defs[] = {
- {
- /*
- * FACILITIES_ALS contains the list of facilities that are
- * required to run a kernel that is compiled e.g. with
- * -march=<machine>.
- */
- .name = "FACILITIES_ALS",
- .bits = (int[]){
-#ifdef CONFIG_HAVE_MARCH_Z900_FEATURES
- 0, /* N3 instructions */
- 1, /* z/Arch mode installed */
-#endif
-#ifdef CONFIG_HAVE_MARCH_Z990_FEATURES
- 18, /* long displacement facility */
-#endif
-#ifdef CONFIG_HAVE_MARCH_Z9_109_FEATURES
- 7, /* stfle */
- 17, /* message security assist */
- 21, /* extended-immediate facility */
- 25, /* store clock fast */
-#endif
-#ifdef CONFIG_HAVE_MARCH_Z10_FEATURES
- 27, /* mvcos */
- 32, /* compare and swap and store */
- 33, /* compare and swap and store 2 */
- 34, /* general extension facility */
- 35, /* execute extensions */
-#endif
-#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
- 45, /* fast-BCR, etc. */
-#endif
-#ifdef CONFIG_HAVE_MARCH_ZEC12_FEATURES
- 49, /* misc-instruction-extensions */
- 52, /* interlocked facility 2 */
-#endif
-#ifdef CONFIG_HAVE_MARCH_Z13_FEATURES
- 53, /* load-and-zero-rightmost-byte, etc. */
-#endif
- -1 /* END */
- }
- },
- {
- .name = "FACILITIES_KVM",
- .bits = (int[]){
- 0, /* N3 instructions */
- 1, /* z/Arch mode installed */
- 2, /* z/Arch mode active */
- 3, /* DAT-enhancement */
- 4, /* idte segment table */
- 5, /* idte region table */
- 6, /* ASN-and-LX reuse */
- 7, /* stfle */
- 8, /* enhanced-DAT 1 */
- 9, /* sense-running-status */
- 10, /* conditional sske */
- 13, /* ipte-range */
- 14, /* nonquiescing key-setting */
- 73, /* transactional execution */
- 75, /* access-exception-fetch/store indication */
- 76, /* msa extension 3 */
- 77, /* msa extension 4 */
- 78, /* enhanced-DAT 2 */
- -1 /* END */
- }
- },
-};
diff --git a/arch/s390/include/asm/ipl.h b/arch/s390/include/asm/ipl.h
index 4da22b2f0521..edb5161df7e2 100644
--- a/arch/s390/include/asm/ipl.h
+++ b/arch/s390/include/asm/ipl.h
@@ -97,7 +97,7 @@ void __init save_area_add_vxrs(struct save_area *, __vector128 *vxrs);
extern void do_reipl(void);
extern void do_halt(void);
extern void do_poff(void);
-extern void ipl_save_parameters(void);
+extern void ipl_verify_parameters(void);
extern void ipl_update_parameters(void);
extern size_t append_ipl_vmparm(char *, size_t);
extern size_t append_ipl_scpdata(char *, size_t);
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index 7b93b78f423c..9bfad2ad6312 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -95,7 +95,7 @@ struct lowcore {
/* Current process. */
__u64 current_task; /* 0x0310 */
- __u64 thread_info; /* 0x0318 */
+ __u8 pad_0x318[0x320-0x318]; /* 0x0318 */
__u64 kernel_stack; /* 0x0320 */
/* Interrupt, panic and restart stack. */
@@ -126,7 +126,8 @@ struct lowcore {
__u64 percpu_offset; /* 0x0378 */
__u64 vdso_per_cpu_data; /* 0x0380 */
__u64 machine_flags; /* 0x0388 */
- __u8 pad_0x0390[0x0398-0x0390]; /* 0x0390 */
+ __u32 preempt_count; /* 0x0390 */
+ __u8 pad_0x0394[0x0398-0x0394]; /* 0x0394 */
__u64 gmap; /* 0x0398 */
__u32 spinlock_lockval; /* 0x03a0 */
__u32 fpu_flags; /* 0x03a4 */
diff --git a/arch/s390/include/asm/pci_clp.h b/arch/s390/include/asm/pci_clp.h
index e75c64cbcf08..c232ef9711f5 100644
--- a/arch/s390/include/asm/pci_clp.h
+++ b/arch/s390/include/asm/pci_clp.h
@@ -46,6 +46,8 @@ struct clp_fh_list_entry {
#define CLP_UTIL_STR_LEN 64
#define CLP_PFIP_NR_SEGMENTS 4
+extern bool zpci_unique_uid;
+
/* List PCI functions request */
struct clp_req_list_pci {
struct clp_req_hdr hdr;
@@ -59,7 +61,8 @@ struct clp_rsp_list_pci {
u64 resume_token;
u32 reserved2;
u16 max_fn;
- u8 reserved3;
+ u8 : 7;
+ u8 uid_checking : 1;
u8 entry_size;
struct clp_fh_list_entry fh_list[CLP_FH_LIST_NR_ENTRIES];
} __packed;
diff --git a/arch/s390/include/asm/pgalloc.h b/arch/s390/include/asm/pgalloc.h
index f4eb9843eed4..166f703dad7c 100644
--- a/arch/s390/include/asm/pgalloc.h
+++ b/arch/s390/include/asm/pgalloc.h
@@ -27,17 +27,17 @@ extern int page_table_allocate_pgste;
static inline void clear_table(unsigned long *s, unsigned long val, size_t n)
{
- typedef struct { char _[n]; } addrtype;
-
- *s = val;
- n = (n / 256) - 1;
- asm volatile(
- " mvc 8(248,%0),0(%0)\n"
- "0: mvc 256(256,%0),0(%0)\n"
- " la %0,256(%0)\n"
- " brct %1,0b\n"
- : "+a" (s), "+d" (n), "=m" (*(addrtype *) s)
- : "m" (*(addrtype *) s));
+ struct addrtype { char _[256]; };
+ int i;
+
+ for (i = 0; i < n; i += 256) {
+ *s = val;
+ asm volatile(
+ "mvc 8(248,%[s]),0(%[s])\n"
+ : "+m" (*(struct addrtype *) s)
+ : [s] "a" (s));
+ s += 256 / sizeof(long);
+ }
}
static inline void crst_table_init(unsigned long *crst, unsigned long entry)
diff --git a/arch/s390/include/asm/preempt.h b/arch/s390/include/asm/preempt.h
new file mode 100644
index 000000000000..b0776b2c8dcf
--- /dev/null
+++ b/arch/s390/include/asm/preempt.h
@@ -0,0 +1,137 @@
+#ifndef __ASM_PREEMPT_H
+#define __ASM_PREEMPT_H
+
+#include <asm/current.h>
+#include <linux/thread_info.h>
+#include <asm/atomic_ops.h>
+
+#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
+
+#define PREEMPT_ENABLED (0 + PREEMPT_NEED_RESCHED)
+
+static inline int preempt_count(void)
+{
+ return READ_ONCE(S390_lowcore.preempt_count) & ~PREEMPT_NEED_RESCHED;
+}
+
+static inline void preempt_count_set(int pc)
+{
+ int old, new;
+
+ do {
+ old = READ_ONCE(S390_lowcore.preempt_count);
+ new = (old & PREEMPT_NEED_RESCHED) |
+ (pc & ~PREEMPT_NEED_RESCHED);
+ } while (__atomic_cmpxchg(&S390_lowcore.preempt_count,
+ old, new) != old);
+}
+
+#define init_task_preempt_count(p) do { } while (0)
+
+#define init_idle_preempt_count(p, cpu) do { \
+ S390_lowcore.preempt_count = PREEMPT_ENABLED; \
+} while (0)
+
+static inline void set_preempt_need_resched(void)
+{
+ __atomic_and(~PREEMPT_NEED_RESCHED, &S390_lowcore.preempt_count);
+}
+
+static inline void clear_preempt_need_resched(void)
+{
+ __atomic_or(PREEMPT_NEED_RESCHED, &S390_lowcore.preempt_count);
+}
+
+static inline bool test_preempt_need_resched(void)
+{
+ return !(READ_ONCE(S390_lowcore.preempt_count) & PREEMPT_NEED_RESCHED);
+}
+
+static inline void __preempt_count_add(int val)
+{
+ if (__builtin_constant_p(val) && (val >= -128) && (val <= 127))
+ __atomic_add_const(val, &S390_lowcore.preempt_count);
+ else
+ __atomic_add(val, &S390_lowcore.preempt_count);
+}
+
+static inline void __preempt_count_sub(int val)
+{
+ __preempt_count_add(-val);
+}
+
+static inline bool __preempt_count_dec_and_test(void)
+{
+ return __atomic_add(-1, &S390_lowcore.preempt_count) == 1;
+}
+
+static inline bool should_resched(int preempt_offset)
+{
+ return unlikely(READ_ONCE(S390_lowcore.preempt_count) ==
+ preempt_offset);
+}
+
+#else /* CONFIG_HAVE_MARCH_Z196_FEATURES */
+
+#define PREEMPT_ENABLED (0)
+
+static inline int preempt_count(void)
+{
+ return READ_ONCE(S390_lowcore.preempt_count);
+}
+
+static inline void preempt_count_set(int pc)
+{
+ S390_lowcore.preempt_count = pc;
+}
+
+#define init_task_preempt_count(p) do { } while (0)
+
+#define init_idle_preempt_count(p, cpu) do { \
+ S390_lowcore.preempt_count = PREEMPT_ENABLED; \
+} while (0)
+
+static inline void set_preempt_need_resched(void)
+{
+}
+
+static inline void clear_preempt_need_resched(void)
+{
+}
+
+static inline bool test_preempt_need_resched(void)
+{
+ return false;
+}
+
+static inline void __preempt_count_add(int val)
+{
+ S390_lowcore.preempt_count += val;
+}
+
+static inline void __preempt_count_sub(int val)
+{
+ S390_lowcore.preempt_count -= val;
+}
+
+static inline bool __preempt_count_dec_and_test(void)
+{
+ return !--S390_lowcore.preempt_count && tif_need_resched();
+}
+
+static inline bool should_resched(int preempt_offset)
+{
+ return unlikely(preempt_count() == preempt_offset &&
+ tif_need_resched());
+}
+
+#endif /* CONFIG_HAVE_MARCH_Z196_FEATURES */
+
+#ifdef CONFIG_PREEMPT
+extern asmlinkage void preempt_schedule(void);
+#define __preempt_schedule() preempt_schedule()
+extern asmlinkage void preempt_schedule_notrace(void);
+#define __preempt_schedule_notrace() preempt_schedule_notrace()
+#endif /* CONFIG_PREEMPT */
+
+#endif /* __ASM_PREEMPT_H */
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index 9d3a21aedc97..6bca916a5ba0 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -110,14 +110,20 @@ typedef struct {
struct thread_struct {
unsigned int acrs[NUM_ACRS];
unsigned long ksp; /* kernel stack pointer */
+ unsigned long user_timer; /* task cputime in user space */
+ unsigned long system_timer; /* task cputime in kernel space */
+ unsigned long sys_call_table; /* system call table address */
mm_segment_t mm_segment;
unsigned long gmap_addr; /* address of last gmap fault. */
unsigned int gmap_write_flag; /* gmap fault write indication */
unsigned int gmap_int_code; /* int code of last gmap fault */
unsigned int gmap_pfault; /* signal of a pending guest pfault */
+ /* Per-thread information related to debugging */
struct per_regs per_user; /* User specified PER registers */
struct per_event per_event; /* Cause of the last PER trap */
unsigned long per_flags; /* Flags to control debug behavior */
+ unsigned int system_call; /* system call number in signal */
+ unsigned long last_break; /* last breaking-event-address. */
/* pfault_wait is used to block the process on a pfault event */
unsigned long pfault_wait;
struct list_head list;
diff --git a/arch/s390/include/asm/sclp.h b/arch/s390/include/asm/sclp.h
index 2ad9c204b1a2..8db92a5b3bf1 100644
--- a/arch/s390/include/asm/sclp.h
+++ b/arch/s390/include/asm/sclp.h
@@ -101,7 +101,8 @@ struct zpci_report_error_header {
u8 data[0]; /* Subsequent Data passed verbatim to SCLP ET 24 */
} __packed;
-int sclp_get_core_info(struct sclp_core_info *info);
+int _sclp_get_core_info_early(struct sclp_core_info *info);
+int _sclp_get_core_info(struct sclp_core_info *info);
int sclp_core_configure(u8 core);
int sclp_core_deconfigure(u8 core);
int sclp_sdias_blk_count(void);
@@ -119,4 +120,11 @@ void sclp_early_detect(void);
void _sclp_print_early(const char *);
void sclp_ocf_cpc_name_copy(char *dst);
+static inline int sclp_get_core_info(struct sclp_core_info *info, int early)
+{
+ if (early)
+ return _sclp_get_core_info_early(info);
+ return _sclp_get_core_info(info);
+}
+
#endif /* _ASM_S390_SCLP_H */
diff --git a/arch/s390/include/asm/scsw.h b/arch/s390/include/asm/scsw.h
index 4af99cdaddf5..17a7904f001a 100644
--- a/arch/s390/include/asm/scsw.h
+++ b/arch/s390/include/asm/scsw.h
@@ -96,7 +96,8 @@ struct tm_scsw {
u32 dstat:8;
u32 cstat:8;
u32 fcxs:8;
- u32 schxs:8;
+ u32 ifob:1;
+ u32 sesq:7;
} __attribute__ ((packed));
/**
@@ -177,6 +178,9 @@ union scsw {
#define SCHN_STAT_INTF_CTRL_CHK 0x02
#define SCHN_STAT_CHAIN_CHECK 0x01
+#define SCSW_SESQ_DEV_NOFCX 3
+#define SCSW_SESQ_PATH_NOFCX 4
+
/*
* architectured values for first sense byte
*/
diff --git a/arch/s390/include/asm/smp.h b/arch/s390/include/asm/smp.h
index 0cc383b9be7f..3deb134587b7 100644
--- a/arch/s390/include/asm/smp.h
+++ b/arch/s390/include/asm/smp.h
@@ -36,6 +36,7 @@ extern void smp_yield_cpu(int cpu);
extern void smp_cpu_set_polarization(int cpu, int val);
extern int smp_cpu_get_polarization(int cpu);
extern void smp_fill_possible_mask(void);
+extern void smp_detect_cpus(void);
#else /* CONFIG_SMP */
@@ -56,6 +57,7 @@ static inline int smp_store_status(int cpu) { return 0; }
static inline int smp_vcpu_scheduled(int cpu) { return 1; }
static inline void smp_yield_cpu(int cpu) { }
static inline void smp_fill_possible_mask(void) { }
+static inline void smp_detect_cpus(void) { }
#endif /* CONFIG_SMP */
@@ -69,6 +71,12 @@ static inline void smp_stop_cpu(void)
}
}
+/* Return thread 0 CPU number as base CPU */
+static inline int smp_get_base_cpu(int cpu)
+{
+ return cpu - (cpu % (smp_cpu_mtid + 1));
+}
+
#ifdef CONFIG_HOTPLUG_CPU
extern int smp_rescan_cpus(void);
extern void __noreturn cpu_die(void);
diff --git a/arch/s390/include/asm/string.h b/arch/s390/include/asm/string.h
index 8662f5c8e17f..15a3c005c274 100644
--- a/arch/s390/include/asm/string.h
+++ b/arch/s390/include/asm/string.h
@@ -14,6 +14,7 @@
#define __HAVE_ARCH_MEMCHR /* inline & arch function */
#define __HAVE_ARCH_MEMCMP /* arch function */
#define __HAVE_ARCH_MEMCPY /* gcc builtin & arch function */
+#define __HAVE_ARCH_MEMMOVE /* gcc builtin & arch function */
#define __HAVE_ARCH_MEMSCAN /* inline & arch function */
#define __HAVE_ARCH_MEMSET /* gcc builtin & arch function */
#define __HAVE_ARCH_STRCAT /* inline & arch function */
@@ -32,6 +33,7 @@
extern int memcmp(const void *, const void *, size_t);
extern void *memcpy(void *, const void *, size_t);
extern void *memset(void *, int, size_t);
+extern void *memmove(void *, const void *, size_t);
extern int strcmp(const char *,const char *);
extern size_t strlcat(char *, const char *, size_t);
extern size_t strlcpy(char *, const char *, size_t);
@@ -40,7 +42,6 @@ extern char *strncpy(char *, const char *, size_t);
extern char *strrchr(const char *, int);
extern char *strstr(const char *, const char *);
-#undef __HAVE_ARCH_MEMMOVE
#undef __HAVE_ARCH_STRCHR
#undef __HAVE_ARCH_STRNCHR
#undef __HAVE_ARCH_STRNCMP
diff --git a/arch/s390/include/asm/sysinfo.h b/arch/s390/include/asm/sysinfo.h
index 2728114d5484..229326c942c7 100644
--- a/arch/s390/include/asm/sysinfo.h
+++ b/arch/s390/include/asm/sysinfo.h
@@ -107,6 +107,11 @@ struct sysinfo_2_2_2 {
char reserved_3[5];
unsigned short cpus_dedicated;
unsigned short cpus_shared;
+ char reserved_4[3];
+ unsigned char vsne;
+ uuid_be uuid;
+ char reserved_5[160];
+ char ext_name[256];
};
#define LPAR_CHAR_DEDICATED (1 << 7)
@@ -127,7 +132,7 @@ struct sysinfo_3_2_2 {
unsigned int caf;
char cpi[16];
char reserved_1[3];
- char ext_name_encoding;
+ unsigned char evmne;
unsigned int reserved_2;
uuid_be uuid;
} vm[8];
diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h
index f15c0398c363..a5b54a445eb8 100644
--- a/arch/s390/include/asm/thread_info.h
+++ b/arch/s390/include/asm/thread_info.h
@@ -12,10 +12,10 @@
/*
* Size of kernel stack for each process
*/
-#define THREAD_ORDER 2
+#define THREAD_SIZE_ORDER 2
#define ASYNC_ORDER 2
-#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
+#define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER)
#define ASYNC_SIZE (PAGE_SIZE << ASYNC_ORDER)
#ifndef __ASSEMBLY__
@@ -30,15 +30,7 @@
* - if the contents of this structure are changed, the assembly constants must also be changed
*/
struct thread_info {
- struct task_struct *task; /* main task structure */
unsigned long flags; /* low level flags */
- unsigned long sys_call_table; /* System call table address */
- unsigned int cpu; /* current CPU */
- int preempt_count; /* 0 => preemptable, <0 => BUG */
- unsigned int system_call;
- __u64 user_timer;
- __u64 system_timer;
- unsigned long last_break; /* last breaking-event-address. */
};
/*
@@ -46,26 +38,14 @@ struct thread_info {
*/
#define INIT_THREAD_INFO(tsk) \
{ \
- .task = &tsk, \
.flags = 0, \
- .cpu = 0, \
- .preempt_count = INIT_PREEMPT_COUNT, \
}
-#define init_thread_info (init_thread_union.thread_info)
#define init_stack (init_thread_union.stack)
-/* how to get the thread information struct from C */
-static inline struct thread_info *current_thread_info(void)
-{
- return (struct thread_info *) S390_lowcore.thread_info;
-}
-
void arch_release_task_struct(struct task_struct *tsk);
int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src);
-#define THREAD_SIZE_ORDER THREAD_ORDER
-
#endif
/*
diff --git a/arch/s390/include/asm/timex.h b/arch/s390/include/asm/timex.h
index 0bb08f341c09..de8298800722 100644
--- a/arch/s390/include/asm/timex.h
+++ b/arch/s390/include/asm/timex.h
@@ -52,11 +52,9 @@ static inline void store_clock_comparator(__u64 *time)
void clock_comparator_work(void);
-void __init ptff_init(void);
+void __init time_early_init(void);
extern unsigned char ptff_function_mask[16];
-extern unsigned long lpar_offset;
-extern unsigned long initial_leap_seconds;
/* Function codes for the ptff instruction. */
#define PTFF_QAF 0x00 /* query available functions */
@@ -100,21 +98,28 @@ struct ptff_qui {
unsigned int pad_0x5c[41];
} __packed;
-static inline int ptff(void *ptff_block, size_t len, unsigned int func)
-{
- typedef struct { char _[len]; } addrtype;
- register unsigned int reg0 asm("0") = func;
- register unsigned long reg1 asm("1") = (unsigned long) ptff_block;
- int rc;
-
- asm volatile(
- " .word 0x0104\n"
- " ipm %0\n"
- " srl %0,28\n"
- : "=d" (rc), "+m" (*(addrtype *) ptff_block)
- : "d" (reg0), "d" (reg1) : "cc");
- return rc;
-}
+/*
+ * ptff - Perform timing facility function
+ * @ptff_block: Pointer to ptff parameter block
+ * @len: Length of parameter block
+ * @func: Function code
+ * Returns: Condition code (0 on success)
+ */
+#define ptff(ptff_block, len, func) \
+({ \
+ struct addrtype { char _[len]; }; \
+ register unsigned int reg0 asm("0") = func; \
+ register unsigned long reg1 asm("1") = (unsigned long) (ptff_block);\
+ int rc; \
+ \
+ asm volatile( \
+ " .word 0x0104\n" \
+ " ipm %0\n" \
+ " srl %0,28\n" \
+ : "=d" (rc), "+m" (*(struct addrtype *) reg1) \
+ : "d" (reg0), "d" (reg1) : "cc"); \
+ rc; \
+})
static inline unsigned long long local_tick_disable(void)
{
diff --git a/arch/s390/include/asm/topology.h b/arch/s390/include/asm/topology.h
index f15f5571ca2b..fa1bfce10370 100644
--- a/arch/s390/include/asm/topology.h
+++ b/arch/s390/include/asm/topology.h
@@ -22,21 +22,22 @@ struct cpu_topology_s390 {
cpumask_t drawer_mask;
};
-DECLARE_PER_CPU(struct cpu_topology_s390, cpu_topology);
-
-#define topology_physical_package_id(cpu) (per_cpu(cpu_topology, cpu).socket_id)
-#define topology_thread_id(cpu) (per_cpu(cpu_topology, cpu).thread_id)
-#define topology_sibling_cpumask(cpu) \
- (&per_cpu(cpu_topology, cpu).thread_mask)
-#define topology_core_id(cpu) (per_cpu(cpu_topology, cpu).core_id)
-#define topology_core_cpumask(cpu) (&per_cpu(cpu_topology, cpu).core_mask)
-#define topology_book_id(cpu) (per_cpu(cpu_topology, cpu).book_id)
-#define topology_book_cpumask(cpu) (&per_cpu(cpu_topology, cpu).book_mask)
-#define topology_drawer_id(cpu) (per_cpu(cpu_topology, cpu).drawer_id)
-#define topology_drawer_cpumask(cpu) (&per_cpu(cpu_topology, cpu).drawer_mask)
+extern struct cpu_topology_s390 cpu_topology[NR_CPUS];
+extern cpumask_t cpus_with_topology;
+
+#define topology_physical_package_id(cpu) (cpu_topology[cpu].socket_id)
+#define topology_thread_id(cpu) (cpu_topology[cpu].thread_id)
+#define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_mask)
+#define topology_core_id(cpu) (cpu_topology[cpu].core_id)
+#define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_mask)
+#define topology_book_id(cpu) (cpu_topology[cpu].book_id)
+#define topology_book_cpumask(cpu) (&cpu_topology[cpu].book_mask)
+#define topology_drawer_id(cpu) (cpu_topology[cpu].drawer_id)
+#define topology_drawer_cpumask(cpu) (&cpu_topology[cpu].drawer_mask)
#define mc_capable() 1
+void topology_init_early(void);
int topology_cpu_init(struct cpu *);
int topology_set_cpu_management(int fc);
void topology_schedule_update(void);
@@ -46,6 +47,7 @@ const struct cpumask *cpu_coregroup_mask(int cpu);
#else /* CONFIG_SCHED_TOPOLOGY */
+static inline void topology_init_early(void) { }
static inline void topology_schedule_update(void) { }
static inline int topology_cpu_init(struct cpu *cpu) { return 0; }
static inline void topology_expect_change(void) { }
@@ -65,7 +67,7 @@ static inline void topology_expect_change(void) { }
#define cpu_to_node cpu_to_node
static inline int cpu_to_node(int cpu)
{
- return per_cpu(cpu_topology, cpu).node_id;
+ return cpu_topology[cpu].node_id;
}
/* Returns a pointer to the cpumask of CPUs on node 'node'. */
diff --git a/arch/s390/include/asm/uaccess.h b/arch/s390/include/asm/uaccess.h
index 52d7c8709279..f82b04e85a21 100644
--- a/arch/s390/include/asm/uaccess.h
+++ b/arch/s390/include/asm/uaccess.h
@@ -37,14 +37,14 @@
#define get_ds() (KERNEL_DS)
#define get_fs() (current->thread.mm_segment)
-#define set_fs(x) \
-({ \
+#define set_fs(x) \
+{ \
unsigned long __pto; \
current->thread.mm_segment = (x); \
__pto = current->thread.mm_segment.ar4 ? \
S390_lowcore.user_asce : S390_lowcore.kernel_asce; \
__ctl_load(__pto, 7, 7); \
-})
+}
#define segment_eq(a,b) ((a).ar4 == (b).ar4)
diff --git a/arch/s390/include/asm/vdso.h b/arch/s390/include/asm/vdso.h
index d0a2dbf2433d..88bdc477a843 100644
--- a/arch/s390/include/asm/vdso.h
+++ b/arch/s390/include/asm/vdso.h
@@ -33,6 +33,8 @@ struct vdso_data {
__u32 ectg_available; /* ECTG instruction present 0x58 */
__u32 tk_mult; /* Mult. used for xtime_nsec 0x5c */
__u32 tk_shift; /* Shift used for xtime_nsec 0x60 */
+ __u32 ts_dir; /* TOD steering direction 0x64 */
+ __u64 ts_end; /* TOD steering end 0x68 */
};
struct vdso_per_cpu_data {
diff --git a/arch/s390/include/uapi/asm/Kbuild b/arch/s390/include/uapi/asm/Kbuild
index cc44b09c25fc..bf736e764cb4 100644
--- a/arch/s390/include/uapi/asm/Kbuild
+++ b/arch/s390/include/uapi/asm/Kbuild
@@ -12,6 +12,7 @@ header-y += dasd.h
header-y += debug.h
header-y += errno.h
header-y += fcntl.h
+header-y += hypfs.h
header-y += ioctl.h
header-y += ioctls.h
header-y += ipcbuf.h
@@ -29,16 +30,16 @@ header-y += ptrace.h
header-y += qeth.h
header-y += resource.h
header-y += schid.h
+header-y += sclp_ctl.h
header-y += sembuf.h
header-y += setup.h
header-y += shmbuf.h
+header-y += sie.h
header-y += sigcontext.h
header-y += siginfo.h
header-y += signal.h
header-y += socket.h
header-y += sockios.h
-header-y += sclp_ctl.h
-header-y += sie.h
header-y += stat.h
header-y += statfs.h
header-y += swab.h
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index 1f0fe98f6db9..36b5101c8606 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -2,20 +2,47 @@
# Makefile for the linux kernel.
#
-KCOV_INSTRUMENT_early.o := n
-KCOV_INSTRUMENT_sclp.o := n
-KCOV_INSTRUMENT_als.o := n
-
ifdef CONFIG_FUNCTION_TRACER
-# Don't trace early setup code and tracing code
-CFLAGS_REMOVE_early.o = $(CC_FLAGS_FTRACE)
-CFLAGS_REMOVE_ftrace.o = $(CC_FLAGS_FTRACE)
+
+# Do not trace tracer code
+CFLAGS_REMOVE_ftrace.o = $(CC_FLAGS_FTRACE)
+
+# Do not trace early setup code
+CFLAGS_REMOVE_als.o = $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_early.o = $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_sclp.o = $(CC_FLAGS_FTRACE)
+
+endif
+
+GCOV_PROFILE_als.o := n
+GCOV_PROFILE_early.o := n
+GCOV_PROFILE_sclp.o := n
+
+KCOV_INSTRUMENT_als.o := n
+KCOV_INSTRUMENT_early.o := n
+KCOV_INSTRUMENT_sclp.o := n
+
+UBSAN_SANITIZE_als.o := n
+UBSAN_SANITIZE_early.o := n
+UBSAN_SANITIZE_sclp.o := n
+
+#
+# Use -march=z900 for sclp.c and als.c to be able to print an error
+# message if the kernel is started on a machine which is too old
+#
+ifneq ($(CC_FLAGS_MARCH),-march=z900)
+CFLAGS_REMOVE_als.o += $(CC_FLAGS_MARCH)
+CFLAGS_als.o += -march=z900
+CFLAGS_REMOVE_sclp.o += $(CC_FLAGS_MARCH)
+CFLAGS_sclp.o += -march=z900
+AFLAGS_REMOVE_head.o += $(CC_FLAGS_MARCH)
+AFLAGS_head.o += -march=z900
endif
#
# Passing null pointers is ok for smp code, since we access the lowcore here.
#
-CFLAGS_smp.o := -Wno-nonnull
+CFLAGS_smp.o := -Wno-nonnull
#
# Disable tailcall optimizations for stack / callchain walking functions
@@ -30,27 +57,7 @@ CFLAGS_dumpstack.o += -fno-optimize-sibling-calls
#
CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"'
-CFLAGS_sysinfo.o += -w
-
-#
-# Use -march=z900 for sclp.c and als.c to be able to print an error
-# message if the kernel is started on a machine which is too old
-#
-CFLAGS_REMOVE_sclp.o = $(CC_FLAGS_FTRACE)
-CFLAGS_REMOVE_als.o = $(CC_FLAGS_FTRACE)
-ifneq ($(CC_FLAGS_MARCH),-march=z900)
-CFLAGS_REMOVE_sclp.o += $(CC_FLAGS_MARCH)
-CFLAGS_sclp.o += -march=z900
-CFLAGS_REMOVE_als.o += $(CC_FLAGS_MARCH)
-CFLAGS_als.o += -march=z900
-AFLAGS_REMOVE_head.o += $(CC_FLAGS_MARCH)
-AFLAGS_head.o += -march=z900
-endif
-GCOV_PROFILE_sclp.o := n
-GCOV_PROFILE_als.o := n
-UBSAN_SANITIZE_als.o := n
-UBSAN_SANITIZE_early.o := n
-UBSAN_SANITIZE_sclp.o := n
+CFLAGS_sysinfo.o += -w
obj-y := traps.o time.o process.o base.o early.o setup.o idle.o vtime.o
obj-y += processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o
diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c
index f3df9e0a5dec..c4b3570ded5b 100644
--- a/arch/s390/kernel/asm-offsets.c
+++ b/arch/s390/kernel/asm-offsets.c
@@ -25,12 +25,14 @@
int main(void)
{
/* task struct offsets */
- OFFSET(__TASK_thread_info, task_struct, stack);
+ OFFSET(__TASK_stack, task_struct, stack);
OFFSET(__TASK_thread, task_struct, thread);
OFFSET(__TASK_pid, task_struct, pid);
BLANK();
/* thread struct offsets */
OFFSET(__THREAD_ksp, thread_struct, ksp);
+ OFFSET(__THREAD_sysc_table, thread_struct, sys_call_table);
+ OFFSET(__THREAD_last_break, thread_struct, last_break);
OFFSET(__THREAD_FPU_fpc, thread_struct, fpu.fpc);
OFFSET(__THREAD_FPU_regs, thread_struct, fpu.regs);
OFFSET(__THREAD_per_cause, thread_struct, per_event.cause);
@@ -39,14 +41,7 @@ int main(void)
OFFSET(__THREAD_trap_tdb, thread_struct, trap_tdb);
BLANK();
/* thread info offsets */
- OFFSET(__TI_task, thread_info, task);
- OFFSET(__TI_flags, thread_info, flags);
- OFFSET(__TI_sysc_table, thread_info, sys_call_table);
- OFFSET(__TI_cpu, thread_info, cpu);
- OFFSET(__TI_precount, thread_info, preempt_count);
- OFFSET(__TI_user_timer, thread_info, user_timer);
- OFFSET(__TI_system_timer, thread_info, system_timer);
- OFFSET(__TI_last_break, thread_info, last_break);
+ OFFSET(__TI_flags, task_struct, thread_info.flags);
BLANK();
/* pt_regs offsets */
OFFSET(__PT_ARGS, pt_regs, args);
@@ -79,6 +74,8 @@ int main(void)
OFFSET(__VDSO_ECTG_OK, vdso_data, ectg_available);
OFFSET(__VDSO_TK_MULT, vdso_data, tk_mult);
OFFSET(__VDSO_TK_SHIFT, vdso_data, tk_shift);
+ OFFSET(__VDSO_TS_DIR, vdso_data, ts_dir);
+ OFFSET(__VDSO_TS_END, vdso_data, ts_end);
OFFSET(__VDSO_ECTG_BASE, vdso_per_cpu_data, ectg_timer_base);
OFFSET(__VDSO_ECTG_USER, vdso_per_cpu_data, ectg_user_time);
OFFSET(__VDSO_CPU_NR, vdso_per_cpu_data, cpu_nr);
@@ -159,7 +156,6 @@ int main(void)
OFFSET(__LC_INT_CLOCK, lowcore, int_clock);
OFFSET(__LC_MCCK_CLOCK, lowcore, mcck_clock);
OFFSET(__LC_CURRENT, lowcore, current_task);
- OFFSET(__LC_THREAD_INFO, lowcore, thread_info);
OFFSET(__LC_KERNEL_STACK, lowcore, kernel_stack);
OFFSET(__LC_ASYNC_STACK, lowcore, async_stack);
OFFSET(__LC_PANIC_STACK, lowcore, panic_stack);
@@ -173,6 +169,7 @@ int main(void)
OFFSET(__LC_PERCPU_OFFSET, lowcore, percpu_offset);
OFFSET(__LC_VDSO_PER_CPU, lowcore, vdso_per_cpu_data);
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 */
diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c
index 4af60374eba0..6f2a6ab13cb5 100644
--- a/arch/s390/kernel/compat_signal.c
+++ b/arch/s390/kernel/compat_signal.c
@@ -446,7 +446,7 @@ static int setup_frame32(struct ksignal *ksig, sigset_t *set,
/* set extra registers only for synchronous signals */
regs->gprs[4] = regs->int_code & 127;
regs->gprs[5] = regs->int_parm_long;
- regs->gprs[6] = task_thread_info(current)->last_break;
+ regs->gprs[6] = current->thread.last_break;
}
return 0;
@@ -523,7 +523,7 @@ static int setup_rt_frame32(struct ksignal *ksig, sigset_t *set,
regs->gprs[2] = ksig->sig;
regs->gprs[3] = (__force __u64) &frame->info;
regs->gprs[4] = (__force __u64) &frame->uc;
- regs->gprs[5] = task_thread_info(current)->last_break;
+ regs->gprs[5] = current->thread.last_break;
return 0;
}
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index 2374c5b46bbc..d038c8cea6cb 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -293,6 +293,7 @@ static noinline __init void setup_lowcore_early(void)
psw.addr = (unsigned long) s390_base_pgm_handler;
S390_lowcore.program_new_psw = psw;
s390_base_pgm_handler_fn = early_pgm_check_handler;
+ S390_lowcore.preempt_count = INIT_PREEMPT_COUNT;
}
static noinline __init void setup_facility_list(void)
@@ -391,7 +392,49 @@ static int __init cad_init(void)
}
early_initcall(cad_init);
-static __init void rescue_initrd(void)
+static __init void memmove_early(void *dst, const void *src, size_t n)
+{
+ unsigned long addr;
+ long incr;
+ psw_t old;
+
+ if (!n)
+ return;
+ incr = 1;
+ if (dst > src) {
+ incr = -incr;
+ dst += n - 1;
+ src += n - 1;
+ }
+ old = S390_lowcore.program_new_psw;
+ S390_lowcore.program_new_psw.mask = __extract_psw();
+ asm volatile(
+ " larl %[addr],1f\n"
+ " stg %[addr],%[psw_pgm_addr]\n"
+ "0: mvc 0(1,%[dst]),0(%[src])\n"
+ " agr %[dst],%[incr]\n"
+ " agr %[src],%[incr]\n"
+ " brctg %[n],0b\n"
+ "1:\n"
+ : [addr] "=&d" (addr),
+ [psw_pgm_addr] "=&Q" (S390_lowcore.program_new_psw.addr),
+ [dst] "+&a" (dst), [src] "+&a" (src), [n] "+d" (n)
+ : [incr] "d" (incr)
+ : "cc", "memory");
+ S390_lowcore.program_new_psw = old;
+}
+
+static __init noinline void ipl_save_parameters(void)
+{
+ void *src, *dst;
+
+ src = (void *)(unsigned long) S390_lowcore.ipl_parmblock_ptr;
+ dst = (void *) IPL_PARMBLOCK_ORIGIN;
+ memmove_early(dst, src, PAGE_SIZE);
+ S390_lowcore.ipl_parmblock_ptr = IPL_PARMBLOCK_ORIGIN;
+}
+
+static __init noinline void rescue_initrd(void)
{
#ifdef CONFIG_BLK_DEV_INITRD
unsigned long min_initrd_addr = (unsigned long) _end + (4UL << 20);
@@ -405,7 +448,7 @@ static __init void rescue_initrd(void)
return;
if (INITRD_START >= min_initrd_addr)
return;
- memmove((void *) min_initrd_addr, (void *) INITRD_START, INITRD_SIZE);
+ memmove_early((void *) min_initrd_addr, (void *) INITRD_START, INITRD_SIZE);
INITRD_START = min_initrd_addr;
#endif
}
@@ -467,7 +510,8 @@ void __init startup_init(void)
ipl_save_parameters();
rescue_initrd();
clear_bss_section();
- ptff_init();
+ ipl_verify_parameters();
+ time_early_init();
init_kernel_storage_key();
lockdep_off();
setup_lowcore_early();
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 49a30737adde..97298c58b2be 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -42,7 +42,7 @@ __PT_R13 = __PT_GPRS + 104
__PT_R14 = __PT_GPRS + 112
__PT_R15 = __PT_GPRS + 120
-STACK_SHIFT = PAGE_SHIFT + THREAD_ORDER
+STACK_SHIFT = PAGE_SHIFT + THREAD_SIZE_ORDER
STACK_SIZE = 1 << STACK_SHIFT
STACK_INIT = STACK_SIZE - STACK_FRAME_OVERHEAD - __PT_SIZE
@@ -123,8 +123,14 @@ _PIF_WORK = (_PIF_PER_TRAP)
.macro LAST_BREAK scratch
srag \scratch,%r10,23
+#ifdef CONFIG_HAVE_MARCH_Z990_FEATURES
jz .+10
- stg %r10,__TI_last_break(%r12)
+ stg %r10,__TASK_thread+__THREAD_last_break(%r12)
+#else
+ jz .+14
+ lghi \scratch,__TASK_thread
+ stg %r10,__THREAD_last_break(\scratch,%r12)
+#endif
.endm
.macro REENABLE_IRQS
@@ -186,14 +192,13 @@ ENTRY(__switch_to)
stmg %r6,%r15,__SF_GPRS(%r15) # store gprs of prev task
lgr %r1,%r2
aghi %r1,__TASK_thread # thread_struct of prev task
- lg %r5,__TASK_thread_info(%r3) # get thread_info of next
+ lg %r5,__TASK_stack(%r3) # start of kernel stack of next
stg %r15,__THREAD_ksp(%r1) # store kernel stack of prev
lgr %r1,%r3
aghi %r1,__TASK_thread # thread_struct of next task
lgr %r15,%r5
aghi %r15,STACK_INIT # end of kernel stack of next
stg %r3,__LC_CURRENT # store task struct of next
- stg %r5,__LC_THREAD_INFO # store thread info of next
stg %r15,__LC_KERNEL_STACK # store end of kernel stack
lg %r15,__THREAD_ksp(%r1) # load kernel stack of next
/* c4 is used in guest detection: arch/s390/kernel/perf_cpum_sf.c */
@@ -274,7 +279,7 @@ ENTRY(system_call)
.Lsysc_stmg:
stmg %r8,%r15,__LC_SAVE_AREA_SYNC
lg %r10,__LC_LAST_BREAK
- lg %r12,__LC_THREAD_INFO
+ lg %r12,__LC_CURRENT
lghi %r14,_PIF_SYSCALL
.Lsysc_per:
lg %r15,__LC_KERNEL_STACK
@@ -288,7 +293,13 @@ ENTRY(system_call)
mvc __PT_INT_CODE(4,%r11),__LC_SVC_ILC
stg %r14,__PT_FLAGS(%r11)
.Lsysc_do_svc:
- lg %r10,__TI_sysc_table(%r12) # address of system call table
+ # load address of system call table
+#ifdef CONFIG_HAVE_MARCH_Z990_FEATURES
+ lg %r10,__TASK_thread+__THREAD_sysc_table(%r12)
+#else
+ lghi %r13,__TASK_thread
+ lg %r10,__THREAD_sysc_table(%r13,%r12)
+#endif
llgh %r8,__PT_INT_CODE+2(%r11)
slag %r8,%r8,2 # shift and test for svc 0
jnz .Lsysc_nr_ok
@@ -389,7 +400,6 @@ ENTRY(system_call)
TSTMSK __PT_FLAGS(%r11),_PIF_SYSCALL
jno .Lsysc_return
lmg %r2,%r7,__PT_R2(%r11) # load svc arguments
- lg %r10,__TI_sysc_table(%r12) # address of system call table
lghi %r8,0 # svc 0 returns -ENOSYS
llgh %r1,__PT_INT_CODE+2(%r11) # load new svc number
cghi %r1,NR_syscalls
@@ -457,7 +467,7 @@ ENTRY(system_call)
#
ENTRY(ret_from_fork)
la %r11,STACK_FRAME_OVERHEAD(%r15)
- lg %r12,__LC_THREAD_INFO
+ lg %r12,__LC_CURRENT
brasl %r14,schedule_tail
TRACE_IRQS_ON
ssm __LC_SVC_NEW_PSW # reenable interrupts
@@ -478,7 +488,7 @@ ENTRY(pgm_check_handler)
stpt __LC_SYNC_ENTER_TIMER
stmg %r8,%r15,__LC_SAVE_AREA_SYNC
lg %r10,__LC_LAST_BREAK
- lg %r12,__LC_THREAD_INFO
+ lg %r12,__LC_CURRENT
larl %r13,cleanup_critical
lmg %r8,%r9,__LC_PGM_OLD_PSW
tmhh %r8,0x0001 # test problem state bit
@@ -501,7 +511,7 @@ ENTRY(pgm_check_handler)
2: LAST_BREAK %r14
UPDATE_VTIME %r14,%r15,__LC_SYNC_ENTER_TIMER
lg %r15,__LC_KERNEL_STACK
- lg %r14,__TI_task(%r12)
+ lgr %r14,%r12
aghi %r14,__TASK_thread # pointer to thread_struct
lghi %r13,__LC_PGM_TDB
tm __LC_PGM_ILC+2,0x02 # check for transaction abort
@@ -567,7 +577,7 @@ ENTRY(io_int_handler)
stpt __LC_ASYNC_ENTER_TIMER
stmg %r8,%r15,__LC_SAVE_AREA_ASYNC
lg %r10,__LC_LAST_BREAK
- lg %r12,__LC_THREAD_INFO
+ lg %r12,__LC_CURRENT
larl %r13,cleanup_critical
lmg %r8,%r9,__LC_IO_OLD_PSW
SWITCH_ASYNC __LC_SAVE_AREA_ASYNC,__LC_ASYNC_ENTER_TIMER
@@ -626,7 +636,7 @@ ENTRY(io_int_handler)
jo .Lio_work_user # yes -> do resched & signal
#ifdef CONFIG_PREEMPT
# check for preemptive scheduling
- icm %r0,15,__TI_precount(%r12)
+ icm %r0,15,__LC_PREEMPT_COUNT
jnz .Lio_restore # preemption is disabled
TSTMSK __TI_flags(%r12),_TIF_NEED_RESCHED
jno .Lio_restore
@@ -741,7 +751,7 @@ ENTRY(ext_int_handler)
stpt __LC_ASYNC_ENTER_TIMER
stmg %r8,%r15,__LC_SAVE_AREA_ASYNC
lg %r10,__LC_LAST_BREAK
- lg %r12,__LC_THREAD_INFO
+ lg %r12,__LC_CURRENT
larl %r13,cleanup_critical
lmg %r8,%r9,__LC_EXT_OLD_PSW
SWITCH_ASYNC __LC_SAVE_AREA_ASYNC,__LC_ASYNC_ENTER_TIMER
@@ -798,13 +808,10 @@ ENTRY(save_fpu_regs)
TSTMSK __LC_CPU_FLAGS,_CIF_FPU
bor %r14
stfpc __THREAD_FPU_fpc(%r2)
-.Lsave_fpu_regs_fpc_end:
lg %r3,__THREAD_FPU_regs(%r2)
TSTMSK __LC_MACHINE_FLAGS,MACHINE_FLAG_VX
jz .Lsave_fpu_regs_fp # no -> store FP regs
-.Lsave_fpu_regs_vx_low:
VSTM %v0,%v15,0,%r3 # vstm 0,15,0(3)
-.Lsave_fpu_regs_vx_high:
VSTM %v16,%v31,256,%r3 # vstm 16,31,256(3)
j .Lsave_fpu_regs_done # -> set CIF_FPU flag
.Lsave_fpu_regs_fp:
@@ -851,9 +858,7 @@ load_fpu_regs:
TSTMSK __LC_MACHINE_FLAGS,MACHINE_FLAG_VX
lg %r4,__THREAD_FPU_regs(%r4) # %r4 <- reg save area
jz .Lload_fpu_regs_fp # -> no VX, load FP regs
-.Lload_fpu_regs_vx:
VLM %v0,%v15,0,%r4
-.Lload_fpu_regs_vx_high:
VLM %v16,%v31,256,%r4
j .Lload_fpu_regs_done
.Lload_fpu_regs_fp:
@@ -889,7 +894,7 @@ ENTRY(mcck_int_handler)
spt __LC_CPU_TIMER_SAVE_AREA-4095(%r1) # revalidate cpu timer
lmg %r0,%r15,__LC_GPREGS_SAVE_AREA-4095(%r1)# revalidate gprs
lg %r10,__LC_LAST_BREAK
- lg %r12,__LC_THREAD_INFO
+ lg %r12,__LC_CURRENT
larl %r13,cleanup_critical
lmg %r8,%r9,__LC_MCK_OLD_PSW
TSTMSK __LC_MCCK_CODE,MCCK_CODE_SYSTEM_DAMAGE
@@ -948,7 +953,7 @@ ENTRY(mcck_int_handler)
.Lmcck_panic:
lg %r15,__LC_PANIC_STACK
- aghi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
+ la %r11,STACK_FRAME_OVERHEAD(%r15)
j .Lmcck_skip
#
@@ -1085,7 +1090,7 @@ cleanup_critical:
jhe 0f
# set up saved registers r10 and r12
stg %r10,16(%r11) # r10 last break
- stg %r12,32(%r11) # r12 thread-info pointer
+ stg %r12,32(%r11) # r12 task struct pointer
0: # check if the user time update has been done
clg %r9,BASED(.Lcleanup_system_call_insn+24)
jh 0f
@@ -1106,7 +1111,9 @@ cleanup_critical:
lg %r9,16(%r11)
srag %r9,%r9,23
jz 0f
- mvc __TI_last_break(8,%r12),16(%r11)
+ lgr %r9,%r12
+ aghi %r9,__TASK_thread
+ mvc __THREAD_last_break(8,%r9),16(%r11)
0: # set up saved register r11
lg %r15,__LC_KERNEL_STACK
la %r9,STACK_FRAME_OVERHEAD(%r15)
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S
index 4431905f8cfa..0b5ebf8a3d30 100644
--- a/arch/s390/kernel/head.S
+++ b/arch/s390/kernel/head.S
@@ -315,7 +315,7 @@ ENTRY(startup_kdump)
jg startup_continue
.Lstack:
- .long 0x8000 + (1<<(PAGE_SHIFT+THREAD_ORDER))
+ .long 0x8000 + (1<<(PAGE_SHIFT+THREAD_SIZE_ORDER))
.align 8
6: .long 0x7fffffff,0xffffffff
diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S
index 03c2b469c472..482d3526e32b 100644
--- a/arch/s390/kernel/head64.S
+++ b/arch/s390/kernel/head64.S
@@ -32,11 +32,10 @@ ENTRY(startup_continue)
#
# Setup stack
#
- larl %r15,init_thread_union
- stg %r15,__LC_THREAD_INFO # cache thread info in lowcore
- lg %r14,__TI_task(%r15) # cache current in lowcore
+ larl %r14,init_task
stg %r14,__LC_CURRENT
- aghi %r15,1<<(PAGE_SHIFT+THREAD_ORDER) # init_task_union + THREAD_SIZE
+ larl %r15,init_thread_union
+ aghi %r15,1<<(PAGE_SHIFT+THREAD_SIZE_ORDER) # init_task_union + THREAD_SIZE
stg %r15,__LC_KERNEL_STACK # set end of kernel stack
aghi %r15,-160
#
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 295bfb7124bc..ff3364a067ff 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -1991,10 +1991,9 @@ void __init ipl_update_parameters(void)
diag308_set_works = 1;
}
-void __init ipl_save_parameters(void)
+void __init ipl_verify_parameters(void)
{
struct cio_iplinfo iplinfo;
- void *src, *dst;
if (cio_get_iplinfo(&iplinfo))
return;
@@ -2005,10 +2004,6 @@ void __init ipl_save_parameters(void)
if (!iplinfo.is_qdio)
return;
ipl_flags |= IPL_PARMBLOCK_VALID;
- src = (void *)(unsigned long)S390_lowcore.ipl_parmblock_ptr;
- dst = (void *)IPL_PARMBLOCK_ORIGIN;
- memmove(dst, src, PAGE_SIZE);
- S390_lowcore.ipl_parmblock_ptr = IPL_PARMBLOCK_ORIGIN;
}
static LIST_HEAD(rcall);
diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c
index 285d6561076d..ef60f4177331 100644
--- a/arch/s390/kernel/irq.c
+++ b/arch/s390/kernel/irq.c
@@ -168,7 +168,7 @@ void do_softirq_own_stack(void)
old = current_stack_pointer();
/* Check against async. stack address range. */
new = S390_lowcore.async_stack;
- if (((new - old) >> (PAGE_SHIFT + THREAD_ORDER)) != 0) {
+ if (((new - old) >> (PAGE_SHIFT + THREAD_SIZE_ORDER)) != 0) {
/* Need to switch to the async. stack. */
new -= STACK_FRAME_OVERHEAD;
((struct stack_frame *) new)->back_chain = old;
diff --git a/arch/s390/kernel/lgr.c b/arch/s390/kernel/lgr.c
index 6ea6d69339b5..ae7dff110054 100644
--- a/arch/s390/kernel/lgr.c
+++ b/arch/s390/kernel/lgr.c
@@ -5,7 +5,8 @@
* Author(s): Michael Holzheu <holzheu@linux.vnet.ibm.com>
*/
-#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/export.h>
#include <linux/timer.h>
#include <linux/slab.h>
#include <asm/facility.h>
@@ -183,4 +184,4 @@ static int __init lgr_init(void)
lgr_timer_set();
return 0;
}
-module_init(lgr_init);
+device_initcall(lgr_init);
diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c
index fcc634c1479a..763dec18edcd 100644
--- a/arch/s390/kernel/perf_cpum_sf.c
+++ b/arch/s390/kernel/perf_cpum_sf.c
@@ -995,39 +995,36 @@ 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 *) &regs.int_parm_long;
- regs.psw.addr = sfr->basic.ia;
- if (sfr->basic.T)
- regs.psw.mask |= PSW_MASK_DAT;
- if (sfr->basic.W)
- regs.psw.mask |= PSW_MASK_WAIT;
- if (sfr->basic.P)
- regs.psw.mask |= PSW_MASK_PSTATE;
- switch (sfr->basic.AS) {
- case 0x0:
- regs.psw.mask |= PSW_ASC_PRIMARY;
- break;
- case 0x1:
- regs.psw.mask |= PSW_ASC_ACCREG;
- break;
- case 0x2:
- regs.psw.mask |= PSW_ASC_SECONDARY;
- break;
- case 0x3:
- regs.psw.mask |= PSW_ASC_HOME;
- break;
- }
+ psw_bits(regs.psw).ia = sfr->basic.ia;
+ psw_bits(regs.psw).t = sfr->basic.T;
+ psw_bits(regs.psw).w = sfr->basic.W;
+ psw_bits(regs.psw).p = sfr->basic.P;
+ psw_bits(regs.psw).as = sfr->basic.AS;
/*
- * A non-zero guest program parameter indicates a guest
- * sample.
- * Note that some early samples or samples from guests without
+ * Use the hardware provided configuration level to decide if the
+ * sample belongs to a guest or host. If that is not available,
+ * fall back to the following heuristics:
+ * A non-zero guest program parameter always indicates a guest
+ * sample. Some early samples or samples from guests without
* lpp usage would be misaccounted to the host. We use the asn
- * value as a heuristic to detect most of these guest samples.
- * If the value differs from the host hpp value, we assume
- * it to be a KVM guest.
+ * value as an addon heuristic to detect most of these guest samples.
+ * If the value differs from the host hpp value, we assume to be a
+ * KVM guest.
*/
- if (sfr->basic.gpp || sfr->basic.prim_asn != (u16) sfr->basic.hpp)
+ switch (sfr->basic.CL) {
+ case 1: /* logical partition */
+ sde_regs->in_guest = 0;
+ break;
+ case 2: /* virtual machine */
sde_regs->in_guest = 1;
+ break;
+ default: /* old machine, use heuristics */
+ if (sfr->basic.gpp ||
+ sfr->basic.prim_asn != (u16)sfr->basic.hpp)
+ sde_regs->in_guest = 1;
+ break;
+ }
overflow = 0;
if (perf_exclude_event(event, &regs, sde_regs))
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index bba4fa74b321..400d14f0b9f5 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -103,7 +103,6 @@ int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
int copy_thread(unsigned long clone_flags, unsigned long new_stackp,
unsigned long arg, struct task_struct *p)
{
- struct thread_info *ti;
struct fake_frame
{
struct stack_frame sf;
@@ -121,9 +120,8 @@ int copy_thread(unsigned long clone_flags, unsigned long new_stackp,
memset(&p->thread.per_event, 0, sizeof(p->thread.per_event));
clear_tsk_thread_flag(p, TIF_SINGLE_STEP);
/* Initialize per thread user and system timer values */
- ti = task_thread_info(p);
- ti->user_timer = 0;
- ti->system_timer = 0;
+ p->thread.user_timer = 0;
+ p->thread.system_timer = 0;
frame->sf.back_chain = 0;
/* new return point is ret_from_fork */
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 9336e824e2db..b81ab8882e2e 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -461,7 +461,7 @@ long arch_ptrace(struct task_struct *child, long request,
}
return 0;
case PTRACE_GET_LAST_BREAK:
- put_user(task_thread_info(child)->last_break,
+ put_user(child->thread.last_break,
(unsigned long __user *) data);
return 0;
case PTRACE_ENABLE_TE:
@@ -811,7 +811,7 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
}
return 0;
case PTRACE_GET_LAST_BREAK:
- put_user(task_thread_info(child)->last_break,
+ put_user(child->thread.last_break,
(unsigned int __user *) data);
return 0;
}
@@ -997,10 +997,10 @@ static int s390_last_break_get(struct task_struct *target,
if (count > 0) {
if (kbuf) {
unsigned long *k = kbuf;
- *k = task_thread_info(target)->last_break;
+ *k = target->thread.last_break;
} else {
unsigned long __user *u = ubuf;
- if (__put_user(task_thread_info(target)->last_break, u))
+ if (__put_user(target->thread.last_break, u))
return -EFAULT;
}
}
@@ -1113,7 +1113,7 @@ static int s390_system_call_get(struct task_struct *target,
unsigned int pos, unsigned int count,
void *kbuf, void __user *ubuf)
{
- unsigned int *data = &task_thread_info(target)->system_call;
+ unsigned int *data = &target->thread.system_call;
return user_regset_copyout(&pos, &count, &kbuf, &ubuf,
data, 0, sizeof(unsigned int));
}
@@ -1123,7 +1123,7 @@ static int s390_system_call_set(struct task_struct *target,
unsigned int pos, unsigned int count,
const void *kbuf, const void __user *ubuf)
{
- unsigned int *data = &task_thread_info(target)->system_call;
+ unsigned int *data = &target->thread.system_call;
return user_regset_copyin(&pos, &count, &kbuf, &ubuf,
data, 0, sizeof(unsigned int));
}
@@ -1327,7 +1327,7 @@ static int s390_compat_last_break_get(struct task_struct *target,
compat_ulong_t last_break;
if (count > 0) {
- last_break = task_thread_info(target)->last_break;
+ last_break = target->thread.last_break;
if (kbuf) {
unsigned long *k = kbuf;
*k = last_break;
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 7f7ba5f23f13..adfac9f0a89f 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -35,6 +35,7 @@
#include <linux/root_dev.h>
#include <linux/console.h>
#include <linux/kernel_stat.h>
+#include <linux/dma-contiguous.h>
#include <linux/device.h>
#include <linux/notifier.h>
#include <linux/pfn.h>
@@ -303,7 +304,7 @@ static void __init setup_lowcore(void)
* Setup lowcore for boot cpu
*/
BUILD_BUG_ON(sizeof(struct lowcore) != LC_PAGES * 4096);
- lc = __alloc_bootmem_low(LC_PAGES * PAGE_SIZE, LC_PAGES * PAGE_SIZE, 0);
+ lc = memblock_virt_alloc_low(sizeof(*lc), sizeof(*lc));
lc->restart_psw.mask = PSW_KERNEL_BITS;
lc->restart_psw.addr = (unsigned long) restart_int_handler;
lc->external_new_psw.mask = PSW_KERNEL_BITS |
@@ -324,15 +325,15 @@ static void __init setup_lowcore(void)
lc->kernel_stack = ((unsigned long) &init_thread_union)
+ THREAD_SIZE - STACK_FRAME_OVERHEAD - sizeof(struct pt_regs);
lc->async_stack = (unsigned long)
- __alloc_bootmem(ASYNC_SIZE, ASYNC_SIZE, 0)
+ memblock_virt_alloc(ASYNC_SIZE, ASYNC_SIZE)
+ ASYNC_SIZE - STACK_FRAME_OVERHEAD - sizeof(struct pt_regs);
lc->panic_stack = (unsigned long)
- __alloc_bootmem(PAGE_SIZE, PAGE_SIZE, 0)
+ memblock_virt_alloc(PAGE_SIZE, PAGE_SIZE)
+ PAGE_SIZE - STACK_FRAME_OVERHEAD - sizeof(struct pt_regs);
- lc->current_task = (unsigned long) init_thread_union.thread_info.task;
- lc->thread_info = (unsigned long) &init_thread_union;
+ lc->current_task = (unsigned long)&init_task;
lc->lpp = LPP_MAGIC;
lc->machine_flags = S390_lowcore.machine_flags;
+ lc->preempt_count = S390_lowcore.preempt_count;
lc->stfl_fac_list = S390_lowcore.stfl_fac_list;
memcpy(lc->stfle_fac_list, S390_lowcore.stfle_fac_list,
MAX_FACILITY_BIT/8);
@@ -349,7 +350,7 @@ static void __init setup_lowcore(void)
lc->last_update_timer = S390_lowcore.last_update_timer;
lc->last_update_clock = S390_lowcore.last_update_clock;
- restart_stack = __alloc_bootmem(ASYNC_SIZE, ASYNC_SIZE, 0);
+ restart_stack = memblock_virt_alloc(ASYNC_SIZE, ASYNC_SIZE);
restart_stack += ASYNC_SIZE;
/*
@@ -412,7 +413,7 @@ static void __init setup_resources(void)
bss_resource.end = (unsigned long) &__bss_stop - 1;
for_each_memblock(memory, reg) {
- res = alloc_bootmem_low(sizeof(*res));
+ res = memblock_virt_alloc(sizeof(*res), 8);
res->flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM;
res->name = "System RAM";
@@ -426,7 +427,7 @@ static void __init setup_resources(void)
std_res->start > res->end)
continue;
if (std_res->end > res->end) {
- sub_res = alloc_bootmem_low(sizeof(*sub_res));
+ sub_res = memblock_virt_alloc(sizeof(*sub_res), 8);
*sub_res = *std_res;
sub_res->end = res->end;
std_res->start = res->end + 1;
@@ -445,7 +446,7 @@ static void __init setup_resources(void)
* part of the System RAM resource.
*/
if (crashk_res.end) {
- memblock_add(crashk_res.start, resource_size(&crashk_res));
+ memblock_add_node(crashk_res.start, resource_size(&crashk_res), 0);
memblock_reserve(crashk_res.start, resource_size(&crashk_res));
insert_resource(&iomem_resource, &crashk_res);
}
@@ -903,6 +904,7 @@ void __init setup_arch(char **cmdline_p)
setup_memory_end();
setup_memory();
+ dma_contiguous_reserve(memory_end);
check_initrd();
reserve_crashkernel();
@@ -921,6 +923,8 @@ void __init setup_arch(char **cmdline_p)
cpu_detect_mhz_feature();
cpu_init();
numa_setup();
+ smp_detect_cpus();
+ topology_init_early();
/*
* Create kernel page tables and switch to virtual addressing.
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index d82562cf0a0e..9f241d1efeda 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -359,7 +359,7 @@ static int setup_frame(int sig, struct k_sigaction *ka,
/* set extra registers only for synchronous signals */
regs->gprs[4] = regs->int_code & 127;
regs->gprs[5] = regs->int_parm_long;
- regs->gprs[6] = task_thread_info(current)->last_break;
+ regs->gprs[6] = current->thread.last_break;
}
return 0;
}
@@ -430,7 +430,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
regs->gprs[2] = ksig->sig;
regs->gprs[3] = (unsigned long) &frame->info;
regs->gprs[4] = (unsigned long) &frame->uc;
- regs->gprs[5] = task_thread_info(current)->last_break;
+ regs->gprs[5] = current->thread.last_break;
return 0;
}
@@ -467,13 +467,13 @@ void do_signal(struct pt_regs *regs)
* the debugger may change all our registers, including the system
* call information.
*/
- current_thread_info()->system_call =
+ current->thread.system_call =
test_pt_regs_flag(regs, PIF_SYSCALL) ? regs->int_code : 0;
if (get_signal(&ksig)) {
/* Whee! Actually deliver the signal. */
- if (current_thread_info()->system_call) {
- regs->int_code = current_thread_info()->system_call;
+ if (current->thread.system_call) {
+ regs->int_code = current->thread.system_call;
/* Check for system call restarting. */
switch (regs->gprs[2]) {
case -ERESTART_RESTARTBLOCK:
@@ -506,8 +506,8 @@ void do_signal(struct pt_regs *regs)
/* No handlers present - check for system call restart */
clear_pt_regs_flag(regs, PIF_SYSCALL);
- if (current_thread_info()->system_call) {
- regs->int_code = current_thread_info()->system_call;
+ if (current->thread.system_call) {
+ regs->int_code = current->thread.system_call;
switch (regs->gprs[2]) {
case -ERESTART_RESTARTBLOCK:
/* Restart with sys_restart_syscall */
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index df4a508ff35c..e49f61aadaf9 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -19,6 +19,7 @@
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include <linux/workqueue.h>
+#include <linux/bootmem.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/mm.h>
@@ -259,16 +260,14 @@ static void pcpu_prepare_secondary(struct pcpu *pcpu, int cpu)
static void pcpu_attach_task(struct pcpu *pcpu, struct task_struct *tsk)
{
struct lowcore *lc = pcpu->lowcore;
- struct thread_info *ti = task_thread_info(tsk);
lc->kernel_stack = (unsigned long) task_stack_page(tsk)
+ THREAD_SIZE - STACK_FRAME_OVERHEAD - sizeof(struct pt_regs);
- lc->thread_info = (unsigned long) task_thread_info(tsk);
lc->current_task = (unsigned long) tsk;
lc->lpp = LPP_MAGIC;
lc->current_pid = tsk->pid;
- lc->user_timer = ti->user_timer;
- lc->system_timer = ti->system_timer;
+ lc->user_timer = tsk->thread.user_timer;
+ lc->system_timer = tsk->thread.system_timer;
lc->steal_timer = 0;
}
@@ -662,14 +661,12 @@ int smp_cpu_get_polarization(int cpu)
return pcpu_devices[cpu].polarization;
}
-static struct sclp_core_info *smp_get_core_info(void)
+static void __ref smp_get_core_info(struct sclp_core_info *info, int early)
{
static int use_sigp_detection;
- struct sclp_core_info *info;
int address;
- info = kzalloc(sizeof(*info), GFP_KERNEL);
- if (info && (use_sigp_detection || sclp_get_core_info(info))) {
+ if (use_sigp_detection || sclp_get_core_info(info, early)) {
use_sigp_detection = 1;
for (address = 0;
address < (SCLP_MAX_CORES << smp_cpu_mt_shift);
@@ -683,7 +680,6 @@ static struct sclp_core_info *smp_get_core_info(void)
}
info->combined = info->configured;
}
- return info;
}
static int smp_add_present_cpu(int cpu);
@@ -724,17 +720,15 @@ static int __smp_rescan_cpus(struct sclp_core_info *info, int sysfs_add)
return nr;
}
-static void __init smp_detect_cpus(void)
+void __init smp_detect_cpus(void)
{
unsigned int cpu, mtid, c_cpus, s_cpus;
struct sclp_core_info *info;
u16 address;
/* Get CPU information */
- info = smp_get_core_info();
- if (!info)
- panic("smp_detect_cpus failed to allocate memory\n");
-
+ info = memblock_virt_alloc(sizeof(*info), 8);
+ smp_get_core_info(info, 1);
/* Find boot CPU type */
if (sclp.has_core_type) {
address = stap();
@@ -770,7 +764,7 @@ static void __init smp_detect_cpus(void)
get_online_cpus();
__smp_rescan_cpus(info, 0);
put_online_cpus();
- kfree(info);
+ memblock_free_early((unsigned long)info, sizeof(*info));
}
/*
@@ -807,7 +801,7 @@ int __cpu_up(unsigned int cpu, struct task_struct *tidle)
pcpu = pcpu_devices + cpu;
if (pcpu->state != CPU_STATE_CONFIGURED)
return -EIO;
- base = cpu - (cpu % (smp_cpu_mtid + 1));
+ base = smp_get_base_cpu(cpu);
for (i = 0; i <= smp_cpu_mtid; i++) {
if (base + i < nr_cpu_ids)
if (cpu_online(base + i))
@@ -907,7 +901,6 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
/* request the 0x1202 external call external interrupt */
if (register_external_irq(EXT_IRQ_EXTERNAL_CALL, do_ext_call_interrupt))
panic("Couldn't request external interrupt 0x1202");
- smp_detect_cpus();
}
void __init smp_prepare_boot_cpu(void)
@@ -973,7 +966,7 @@ static ssize_t cpu_configure_store(struct device *dev,
rc = -EBUSY;
/* disallow configuration changes of online cpus and cpu 0 */
cpu = dev->id;
- cpu -= cpu % (smp_cpu_mtid + 1);
+ cpu = smp_get_base_cpu(cpu);
if (cpu == 0)
goto out;
for (i = 0; i <= smp_cpu_mtid; i++)
@@ -1106,9 +1099,10 @@ int __ref smp_rescan_cpus(void)
struct sclp_core_info *info;
int nr;
- info = smp_get_core_info();
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
+ smp_get_core_info(info, 0);
get_online_cpus();
mutex_lock(&smp_cpu_state_mutex);
nr = __smp_rescan_cpus(info, 1);
diff --git a/arch/s390/kernel/swsusp.S b/arch/s390/kernel/swsusp.S
index 2d6b6e81f812..1ff21f05d7dd 100644
--- a/arch/s390/kernel/swsusp.S
+++ b/arch/s390/kernel/swsusp.S
@@ -194,7 +194,7 @@ pgm_check_entry:
/* Suspend CPU not available -> panic */
larl %r15,init_thread_union
- ahi %r15,1<<(PAGE_SHIFT+THREAD_ORDER)
+ ahi %r15,1<<(PAGE_SHIFT+THREAD_SIZE_ORDER)
larl %r2,.Lpanic_string
larl %r3,_sclp_print_early
lghi %r1,0
diff --git a/arch/s390/kernel/sysinfo.c b/arch/s390/kernel/sysinfo.c
index bfda6aa40280..24021c1e3ecb 100644
--- a/arch/s390/kernel/sysinfo.c
+++ b/arch/s390/kernel/sysinfo.c
@@ -56,6 +56,20 @@ int stsi(void *sysinfo, int fc, int sel1, int sel2)
}
EXPORT_SYMBOL(stsi);
+static bool convert_ext_name(unsigned char encoding, char *name, size_t len)
+{
+ switch (encoding) {
+ case 1: /* EBCDIC */
+ EBCASC(name, len);
+ break;
+ case 2: /* UTF-8 */
+ break;
+ default:
+ return false;
+ }
+ return true;
+}
+
static void stsi_1_1_1(struct seq_file *m, struct sysinfo_1_1_1 *info)
{
int i;
@@ -207,24 +221,19 @@ static void stsi_2_2_2(struct seq_file *m, struct sysinfo_2_2_2 *info)
seq_printf(m, "LPAR CPUs S-MTID: %d\n", info->mt_stid);
seq_printf(m, "LPAR CPUs PS-MTID: %d\n", info->mt_psmtid);
}
+ if (convert_ext_name(info->vsne, info->ext_name, sizeof(info->ext_name))) {
+ seq_printf(m, "LPAR Extended Name: %-.256s\n", info->ext_name);
+ seq_printf(m, "LPAR UUID: %pUb\n", &info->uuid);
+ }
}
static void print_ext_name(struct seq_file *m, int lvl,
struct sysinfo_3_2_2 *info)
{
- if (info->vm[lvl].ext_name_encoding == 0)
- return;
- if (info->ext_names[lvl][0] == 0)
- return;
- switch (info->vm[lvl].ext_name_encoding) {
- case 1: /* EBCDIC */
- EBCASC(info->ext_names[lvl], sizeof(info->ext_names[lvl]));
- break;
- case 2: /* UTF-8 */
- break;
- default:
+ size_t len = sizeof(info->ext_names[lvl]);
+
+ if (!convert_ext_name(info->vm[lvl].evmne, info->ext_names[lvl], len))
return;
- }
seq_printf(m, "VM%02d Extended Name: %-.256s\n", lvl,
info->ext_names[lvl]);
}
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index 0bfcc492987e..867d0a057046 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -59,19 +59,27 @@ ATOMIC_NOTIFIER_HEAD(s390_epoch_delta_notifier);
EXPORT_SYMBOL(s390_epoch_delta_notifier);
unsigned char ptff_function_mask[16];
-unsigned long lpar_offset;
-unsigned long initial_leap_seconds;
+
+static unsigned long long lpar_offset;
+static unsigned long long initial_leap_seconds;
+static unsigned long long tod_steering_end;
+static long long tod_steering_delta;
/*
* Get time offsets with PTFF
*/
-void __init ptff_init(void)
+void __init time_early_init(void)
{
struct ptff_qto qto;
struct ptff_qui qui;
+ /* Initialize TOD steering parameters */
+ tod_steering_end = sched_clock_base_cc;
+ vdso_data->ts_end = tod_steering_end;
+
if (!test_facility(28))
return;
+
ptff(&ptff_function_mask, sizeof(ptff_function_mask), PTFF_QAF);
/* get LPAR offset */
@@ -80,7 +88,7 @@ void __init ptff_init(void)
/* get initial leap seconds */
if (ptff_query(PTFF_QUI) && ptff(&qui, sizeof(qui), PTFF_QUI) == 0)
- initial_leap_seconds = (unsigned long)
+ initial_leap_seconds = (unsigned long long)
((long) qui.old_leap * 4096000000L);
}
@@ -123,18 +131,6 @@ void clock_comparator_work(void)
cd->event_handler(cd);
}
-/*
- * Fixup the clock comparator.
- */
-static void fixup_clock_comparator(unsigned long long delta)
-{
- /* If nobody is waiting there's nothing to fix. */
- if (S390_lowcore.clock_comparator == -1ULL)
- return;
- S390_lowcore.clock_comparator += delta;
- set_clock_comparator(S390_lowcore.clock_comparator);
-}
-
static int s390_next_event(unsigned long delta,
struct clock_event_device *evt)
{
@@ -215,7 +211,21 @@ void read_boot_clock64(struct timespec64 *ts)
static cycle_t read_tod_clock(struct clocksource *cs)
{
- return get_tod_clock();
+ unsigned long long now, adj;
+
+ preempt_disable(); /* protect from changes to steering parameters */
+ now = get_tod_clock();
+ adj = tod_steering_end - now;
+ if (unlikely((s64) adj >= 0))
+ /*
+ * manually steer by 1 cycle every 2^16 cycles. This
+ * corresponds to shifting the tod delta by 15. 1s is
+ * therefore steered in ~9h. The adjust will decrease
+ * over time, until it finally reaches 0.
+ */
+ now += (tod_steering_delta < 0) ? (adj >> 15) : -(adj >> 15);
+ preempt_enable();
+ return now;
}
static struct clocksource clocksource_tod = {
@@ -384,6 +394,55 @@ static inline int check_sync_clock(void)
return rc;
}
+/*
+ * Apply clock delta to the global data structures.
+ * This is called once on the CPU that performed the clock sync.
+ */
+static void clock_sync_global(unsigned long long delta)
+{
+ unsigned long now, adj;
+ struct ptff_qto qto;
+
+ /* Fixup the monotonic sched clock. */
+ sched_clock_base_cc += delta;
+ /* Adjust TOD steering parameters. */
+ vdso_data->tb_update_count++;
+ now = get_tod_clock();
+ adj = tod_steering_end - now;
+ if (unlikely((s64) adj >= 0))
+ /* Calculate how much of the old adjustment is left. */
+ tod_steering_delta = (tod_steering_delta < 0) ?
+ -(adj >> 15) : (adj >> 15);
+ tod_steering_delta += delta;
+ if ((abs(tod_steering_delta) >> 48) != 0)
+ panic("TOD clock sync offset %lli is too large to drift\n",
+ tod_steering_delta);
+ tod_steering_end = now + (abs(tod_steering_delta) << 15);
+ vdso_data->ts_dir = (tod_steering_delta < 0) ? 0 : 1;
+ vdso_data->ts_end = tod_steering_end;
+ vdso_data->tb_update_count++;
+ /* Update LPAR offset. */
+ if (ptff_query(PTFF_QTO) && ptff(&qto, sizeof(qto), PTFF_QTO) == 0)
+ lpar_offset = qto.tod_epoch_difference;
+ /* Call the TOD clock change notifier. */
+ atomic_notifier_call_chain(&s390_epoch_delta_notifier, 0, &delta);
+}
+
+/*
+ * Apply clock delta to the per-CPU data structures of this CPU.
+ * This is called for each online CPU after the call to clock_sync_global.
+ */
+static void clock_sync_local(unsigned long long delta)
+{
+ /* Add the delta to the clock comparator. */
+ if (S390_lowcore.clock_comparator != -1ULL) {
+ S390_lowcore.clock_comparator += delta;
+ set_clock_comparator(S390_lowcore.clock_comparator);
+ }
+ /* Adjust the last_update_clock time-stamp. */
+ S390_lowcore.last_update_clock += delta;
+}
+
/* Single threaded workqueue used for stp sync events */
static struct workqueue_struct *time_sync_wq;
@@ -397,31 +456,9 @@ static void __init time_init_wq(void)
struct clock_sync_data {
atomic_t cpus;
int in_sync;
- unsigned long long fixup_cc;
+ unsigned long long clock_delta;
};
-static void clock_sync_cpu(struct clock_sync_data *sync)
-{
- atomic_dec(&sync->cpus);
- enable_sync_clock();
- while (sync->in_sync == 0) {
- __udelay(1);
- /*
- * A different cpu changes *in_sync. Therefore use
- * barrier() to force memory access.
- */
- barrier();
- }
- if (sync->in_sync != 1)
- /* Didn't work. Clear per-cpu in sync bit again. */
- disable_sync_clock(NULL);
- /*
- * This round of TOD syncing is done. Set the clock comparator
- * to the next tick and let the processor continue.
- */
- fixup_clock_comparator(sync->fixup_cc);
-}
-
/*
* Server Time Protocol (STP) code.
*/
@@ -523,54 +560,46 @@ void stp_queue_work(void)
static int stp_sync_clock(void *data)
{
- static int first;
+ struct clock_sync_data *sync = data;
unsigned long long clock_delta;
- struct clock_sync_data *stp_sync;
- struct ptff_qto qto;
+ static int first;
int rc;
- stp_sync = data;
-
- if (xchg(&first, 1) == 1) {
- /* Slave */
- clock_sync_cpu(stp_sync);
- return 0;
- }
-
- /* Wait until all other cpus entered the sync function. */
- while (atomic_read(&stp_sync->cpus) != 0)
- cpu_relax();
-
enable_sync_clock();
-
- rc = 0;
- if (stp_info.todoff[0] || stp_info.todoff[1] ||
- stp_info.todoff[2] || stp_info.todoff[3] ||
- stp_info.tmd != 2) {
- rc = chsc_sstpc(stp_page, STP_OP_SYNC, 0, &clock_delta);
- if (rc == 0) {
- /* fixup the monotonic sched clock */
- sched_clock_base_cc += clock_delta;
- if (ptff_query(PTFF_QTO) &&
- ptff(&qto, sizeof(qto), PTFF_QTO) == 0)
- /* Update LPAR offset */
- lpar_offset = qto.tod_epoch_difference;
- atomic_notifier_call_chain(&s390_epoch_delta_notifier,
- 0, &clock_delta);
- stp_sync->fixup_cc = clock_delta;
- fixup_clock_comparator(clock_delta);
- rc = chsc_sstpi(stp_page, &stp_info,
- sizeof(struct stp_sstpi));
- if (rc == 0 && stp_info.tmd != 2)
- rc = -EAGAIN;
+ if (xchg(&first, 1) == 0) {
+ /* Wait until all other cpus entered the sync function. */
+ while (atomic_read(&sync->cpus) != 0)
+ cpu_relax();
+ rc = 0;
+ if (stp_info.todoff[0] || stp_info.todoff[1] ||
+ stp_info.todoff[2] || stp_info.todoff[3] ||
+ stp_info.tmd != 2) {
+ rc = chsc_sstpc(stp_page, STP_OP_SYNC, 0,
+ &clock_delta);
+ if (rc == 0) {
+ sync->clock_delta = clock_delta;
+ clock_sync_global(clock_delta);
+ rc = chsc_sstpi(stp_page, &stp_info,
+ sizeof(struct stp_sstpi));
+ if (rc == 0 && stp_info.tmd != 2)
+ rc = -EAGAIN;
+ }
}
+ sync->in_sync = rc ? -EAGAIN : 1;
+ xchg(&first, 0);
+ } else {
+ /* Slave */
+ atomic_dec(&sync->cpus);
+ /* Wait for in_sync to be set. */
+ while (READ_ONCE(sync->in_sync) == 0)
+ __udelay(1);
}
- if (rc) {
+ if (sync->in_sync != 1)
+ /* Didn't work. Clear per-cpu in sync bit again. */
disable_sync_clock(NULL);
- stp_sync->in_sync = -EAGAIN;
- } else
- stp_sync->in_sync = 1;
- xchg(&first, 0);
+ /* Apply clock delta to per-CPU fields of this CPU. */
+ clock_sync_local(sync->clock_delta);
+
return 0;
}
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index e959c02e0cac..93dcbae1e98d 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -7,6 +7,7 @@
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include <linux/workqueue.h>
+#include <linux/bootmem.h>
#include <linux/cpuset.h>
#include <linux/device.h>
#include <linux/export.h>
@@ -41,15 +42,17 @@ static bool topology_enabled = true;
static DECLARE_WORK(topology_work, topology_work_fn);
/*
- * Socket/Book linked lists and per_cpu(cpu_topology) updates are
+ * Socket/Book linked lists and cpu_topology updates are
* protected by "sched_domains_mutex".
*/
static struct mask_info socket_info;
static struct mask_info book_info;
static struct mask_info drawer_info;
-DEFINE_PER_CPU(struct cpu_topology_s390, cpu_topology);
-EXPORT_PER_CPU_SYMBOL_GPL(cpu_topology);
+struct cpu_topology_s390 cpu_topology[NR_CPUS];
+EXPORT_SYMBOL_GPL(cpu_topology);
+
+cpumask_t cpus_with_topology;
static cpumask_t cpu_group_map(struct mask_info *info, unsigned int cpu)
{
@@ -97,7 +100,7 @@ static void add_cpus_to_mask(struct topology_core *tl_core,
if (lcpu < 0)
continue;
for (i = 0; i <= smp_cpu_mtid; i++) {
- topo = &per_cpu(cpu_topology, lcpu + i);
+ topo = &cpu_topology[lcpu + i];
topo->drawer_id = drawer->id;
topo->book_id = book->id;
topo->socket_id = socket->id;
@@ -106,6 +109,7 @@ static void add_cpus_to_mask(struct topology_core *tl_core,
cpumask_set_cpu(lcpu + i, &drawer->mask);
cpumask_set_cpu(lcpu + i, &book->mask);
cpumask_set_cpu(lcpu + i, &socket->mask);
+ cpumask_set_cpu(lcpu + i, &cpus_with_topology);
smp_cpu_set_polarization(lcpu + i, tl_core->pp);
}
}
@@ -220,7 +224,7 @@ static void update_cpu_masks(void)
int cpu;
for_each_possible_cpu(cpu) {
- topo = &per_cpu(cpu_topology, cpu);
+ topo = &cpu_topology[cpu];
topo->thread_mask = cpu_thread_map(cpu);
topo->core_mask = cpu_group_map(&socket_info, cpu);
topo->book_mask = cpu_group_map(&book_info, cpu);
@@ -231,6 +235,8 @@ static void update_cpu_masks(void)
topo->socket_id = cpu;
topo->book_id = cpu;
topo->drawer_id = cpu;
+ if (cpu_present(cpu))
+ cpumask_set_cpu(cpu, &cpus_with_topology);
}
}
numa_update_cpu_topology();
@@ -241,12 +247,12 @@ void store_topology(struct sysinfo_15_1_x *info)
stsi(info, 15, 1, min(topology_max_mnest, 4));
}
-int arch_update_cpu_topology(void)
+static int __arch_update_cpu_topology(void)
{
struct sysinfo_15_1_x *info = tl_info;
- struct device *dev;
- int cpu, rc = 0;
+ int rc = 0;
+ cpumask_clear(&cpus_with_topology);
if (MACHINE_HAS_TOPOLOGY) {
rc = 1;
store_topology(info);
@@ -255,6 +261,15 @@ int arch_update_cpu_topology(void)
update_cpu_masks();
if (!MACHINE_HAS_TOPOLOGY)
topology_update_polarization_simple();
+ return rc;
+}
+
+int arch_update_cpu_topology(void)
+{
+ struct device *dev;
+ int cpu, rc;
+
+ rc = __arch_update_cpu_topology();
for_each_online_cpu(cpu) {
dev = get_cpu_device(cpu);
kobject_uevent(&dev->kobj, KOBJ_CHANGE);
@@ -394,23 +409,23 @@ int topology_cpu_init(struct cpu *cpu)
static const struct cpumask *cpu_thread_mask(int cpu)
{
- return &per_cpu(cpu_topology, cpu).thread_mask;
+ return &cpu_topology[cpu].thread_mask;
}
const struct cpumask *cpu_coregroup_mask(int cpu)
{
- return &per_cpu(cpu_topology, cpu).core_mask;
+ return &cpu_topology[cpu].core_mask;
}
static const struct cpumask *cpu_book_mask(int cpu)
{
- return &per_cpu(cpu_topology, cpu).book_mask;
+ return &cpu_topology[cpu].book_mask;
}
static const struct cpumask *cpu_drawer_mask(int cpu)
{
- return &per_cpu(cpu_topology, cpu).drawer_mask;
+ return &cpu_topology[cpu].drawer_mask;
}
static int __init early_parse_topology(char *p)
@@ -438,19 +453,20 @@ static void __init alloc_masks(struct sysinfo_15_1_x *info,
nr_masks *= info->mag[TOPOLOGY_NR_MAG - offset - 1 - i];
nr_masks = max(nr_masks, 1);
for (i = 0; i < nr_masks; i++) {
- mask->next = kzalloc(sizeof(*mask->next), GFP_KERNEL);
+ mask->next = memblock_virt_alloc(sizeof(*mask->next), 8);
mask = mask->next;
}
}
-static int __init s390_topology_init(void)
+void __init topology_init_early(void)
{
struct sysinfo_15_1_x *info;
int i;
+ set_sched_topology(s390_topology);
if (!MACHINE_HAS_TOPOLOGY)
- return 0;
- tl_info = (struct sysinfo_15_1_x *)__get_free_page(GFP_KERNEL);
+ goto out;
+ tl_info = memblock_virt_alloc(sizeof(*tl_info), PAGE_SIZE);
info = tl_info;
store_topology(info);
pr_info("The CPU configuration topology of the machine is:");
@@ -460,10 +476,9 @@ static int __init s390_topology_init(void)
alloc_masks(info, &socket_info, 1);
alloc_masks(info, &book_info, 2);
alloc_masks(info, &drawer_info, 3);
- set_sched_topology(s390_topology);
- return 0;
+out:
+ __arch_update_cpu_topology();
}
-early_initcall(s390_topology_init);
static int __init topology_init(void)
{
diff --git a/arch/s390/kernel/vdso32/clock_gettime.S b/arch/s390/kernel/vdso32/clock_gettime.S
index 5eec9afbb5b5..a5769b83d90e 100644
--- a/arch/s390/kernel/vdso32/clock_gettime.S
+++ b/arch/s390/kernel/vdso32/clock_gettime.S
@@ -99,8 +99,27 @@ __kernel_clock_gettime:
tml %r4,0x0001 /* pending update ? loop */
jnz 11b
stcke 0(%r15) /* Store TOD clock */
- lm %r0,%r1,1(%r15)
- s %r0,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
+ lm %r0,%r1,__VDSO_TS_END(%r5) /* TOD steering end time */
+ s %r0,1(%r15) /* no - ts_steering_end */
+ sl %r1,5(%r15)
+ brc 3,22f
+ ahi %r0,-1
+22: ltr %r0,%r0 /* past end of steering? */
+ jm 24f
+ srdl %r0,15 /* 1 per 2^16 */
+ tm __VDSO_TS_DIR+3(%r5),0x01 /* steering direction? */
+ jz 23f
+ lcr %r0,%r0 /* negative TOD offset */
+ lcr %r1,%r1
+ je 23f
+ ahi %r0,-1
+23: a %r0,1(%r15) /* add TOD timestamp */
+ al %r1,5(%r15)
+ brc 12,25f
+ ahi %r0,1
+ j 25f
+24: lm %r0,%r1,1(%r15) /* load TOD timestamp */
+25: s %r0,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
sl %r1,__VDSO_XTIME_STAMP+4(%r5)
brc 3,12f
ahi %r0,-1
diff --git a/arch/s390/kernel/vdso32/gettimeofday.S b/arch/s390/kernel/vdso32/gettimeofday.S
index 719de6186b20..63b86dceb0bf 100644
--- a/arch/s390/kernel/vdso32/gettimeofday.S
+++ b/arch/s390/kernel/vdso32/gettimeofday.S
@@ -31,8 +31,27 @@ __kernel_gettimeofday:
tml %r4,0x0001 /* pending update ? loop */
jnz 1b
stcke 0(%r15) /* Store TOD clock */
- lm %r0,%r1,1(%r15)
- s %r0,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
+ lm %r0,%r1,__VDSO_TS_END(%r5) /* TOD steering end time */
+ s %r0,1(%r15)
+ sl %r1,5(%r15)
+ brc 3,14f
+ ahi %r0,-1
+14: ltr %r0,%r0 /* past end of steering? */
+ jm 16f
+ srdl %r0,15 /* 1 per 2^16 */
+ tm __VDSO_TS_DIR+3(%r5),0x01 /* steering direction? */
+ jz 15f
+ lcr %r0,%r0 /* negative TOD offset */
+ lcr %r1,%r1
+ je 15f
+ ahi %r0,-1
+15: a %r0,1(%r15) /* add TOD timestamp */
+ al %r1,5(%r15)
+ brc 12,17f
+ ahi %r0,1
+ j 17f
+16: lm %r0,%r1,1(%r15) /* load TOD timestamp */
+17: s %r0,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
sl %r1,__VDSO_XTIME_STAMP+4(%r5)
brc 3,3f
ahi %r0,-1
diff --git a/arch/s390/kernel/vdso64/clock_gettime.S b/arch/s390/kernel/vdso64/clock_gettime.S
index 61541fb93dc6..9c3b12626dba 100644
--- a/arch/s390/kernel/vdso64/clock_gettime.S
+++ b/arch/s390/kernel/vdso64/clock_gettime.S
@@ -83,8 +83,17 @@ __kernel_clock_gettime:
tmll %r4,0x0001 /* pending update ? loop */
jnz 5b
stcke 0(%r15) /* Store TOD clock */
- lgf %r2,__VDSO_TK_SHIFT(%r5) /* Timekeeper shift */
lg %r1,1(%r15)
+ lg %r0,__VDSO_TS_END(%r5) /* TOD steering end time */
+ slgr %r0,%r1 /* now - ts_steering_end */
+ ltgr %r0,%r0 /* past end of steering ? */
+ jm 17f
+ srlg %r0,%r0,15 /* 1 per 2^16 */
+ tm __VDSO_TS_DIR+3(%r5),0x01 /* steering direction? */
+ jz 18f
+ lcgr %r0,%r0 /* negative TOD offset */
+18: algr %r1,%r0 /* add steering offset */
+17: lgf %r2,__VDSO_TK_SHIFT(%r5) /* Timekeeper shift */
sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
msgf %r1,__VDSO_TK_MULT(%r5) /* * tk->mult */
alg %r1,__VDSO_XTIME_NSEC(%r5) /* + tk->xtime_nsec */
diff --git a/arch/s390/kernel/vdso64/gettimeofday.S b/arch/s390/kernel/vdso64/gettimeofday.S
index 6ce46707663c..b02e62f3bc12 100644
--- a/arch/s390/kernel/vdso64/gettimeofday.S
+++ b/arch/s390/kernel/vdso64/gettimeofday.S
@@ -31,7 +31,16 @@ __kernel_gettimeofday:
jnz 0b
stcke 0(%r15) /* Store TOD clock */
lg %r1,1(%r15)
- sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
+ lg %r0,__VDSO_TS_END(%r5) /* TOD steering end time */
+ slgr %r0,%r1 /* now - ts_steering_end */
+ ltgr %r0,%r0 /* past end of steering ? */
+ jm 6f
+ srlg %r0,%r0,15 /* 1 per 2^16 */
+ tm __VDSO_TS_DIR+3(%r5),0x01 /* steering direction? */
+ jz 7f
+ lcgr %r0,%r0 /* negative TOD offset */
+7: algr %r1,%r0 /* add steering offset */
+6: sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
msgf %r1,__VDSO_TK_MULT(%r5) /* * tk->mult */
alg %r1,__VDSO_XTIME_NSEC(%r5) /* + tk->xtime_nsec */
lg %r0,__VDSO_XTIME_SEC(%r5) /* tk->xtime_sec */
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c
index 1bd5dde2d5a9..6b246aadf311 100644
--- a/arch/s390/kernel/vtime.c
+++ b/arch/s390/kernel/vtime.c
@@ -96,7 +96,6 @@ static void update_mt_scaling(void)
*/
static int do_account_vtime(struct task_struct *tsk, int hardirq_offset)
{
- struct thread_info *ti = task_thread_info(tsk);
u64 timer, clock, user, system, steal;
u64 user_scaled, system_scaled;
@@ -119,13 +118,13 @@ static int do_account_vtime(struct task_struct *tsk, int hardirq_offset)
time_after64(jiffies_64, this_cpu_read(mt_scaling_jiffies)))
update_mt_scaling();
- user = S390_lowcore.user_timer - ti->user_timer;
+ user = S390_lowcore.user_timer - tsk->thread.user_timer;
S390_lowcore.steal_timer -= user;
- ti->user_timer = S390_lowcore.user_timer;
+ tsk->thread.user_timer = S390_lowcore.user_timer;
- system = S390_lowcore.system_timer - ti->system_timer;
+ system = S390_lowcore.system_timer - tsk->thread.system_timer;
S390_lowcore.steal_timer -= system;
- ti->system_timer = S390_lowcore.system_timer;
+ tsk->thread.system_timer = S390_lowcore.system_timer;
user_scaled = user;
system_scaled = system;
@@ -153,15 +152,11 @@ static int do_account_vtime(struct task_struct *tsk, int hardirq_offset)
void vtime_task_switch(struct task_struct *prev)
{
- struct thread_info *ti;
-
do_account_vtime(prev, 0);
- ti = task_thread_info(prev);
- ti->user_timer = S390_lowcore.user_timer;
- ti->system_timer = S390_lowcore.system_timer;
- ti = task_thread_info(current);
- S390_lowcore.user_timer = ti->user_timer;
- S390_lowcore.system_timer = ti->system_timer;
+ prev->thread.user_timer = S390_lowcore.user_timer;
+ prev->thread.system_timer = S390_lowcore.system_timer;
+ S390_lowcore.user_timer = current->thread.user_timer;
+ S390_lowcore.system_timer = current->thread.system_timer;
}
/*
@@ -181,7 +176,6 @@ void vtime_account_user(struct task_struct *tsk)
*/
void vtime_account_irq_enter(struct task_struct *tsk)
{
- struct thread_info *ti = task_thread_info(tsk);
u64 timer, system, system_scaled;
timer = S390_lowcore.last_update_timer;
@@ -193,9 +187,9 @@ void vtime_account_irq_enter(struct task_struct *tsk)
time_after64(jiffies_64, this_cpu_read(mt_scaling_jiffies)))
update_mt_scaling();
- system = S390_lowcore.system_timer - ti->system_timer;
+ system = S390_lowcore.system_timer - tsk->thread.system_timer;
S390_lowcore.steal_timer -= system;
- ti->system_timer = S390_lowcore.system_timer;
+ tsk->thread.system_timer = S390_lowcore.system_timer;
system_scaled = system;
/* Do MT utilization scaling */
if (smp_cpu_mtid) {
diff --git a/arch/s390/lib/mem.S b/arch/s390/lib/mem.S
index be9fa65bfac4..7422a706f310 100644
--- a/arch/s390/lib/mem.S
+++ b/arch/s390/lib/mem.S
@@ -8,6 +8,45 @@
#include <asm/export.h>
/*
+ * void *memmove(void *dest, const void *src, size_t n)
+ */
+ENTRY(memmove)
+ ltgr %r4,%r4
+ lgr %r1,%r2
+ bzr %r14
+ clgr %r2,%r3
+ jnh .Lmemmove_forward
+ la %r5,0(%r4,%r3)
+ clgr %r2,%r5
+ jl .Lmemmove_reverse
+.Lmemmove_forward:
+ aghi %r4,-1
+ srlg %r0,%r4,8
+ ltgr %r0,%r0
+ jz .Lmemmove_rest
+.Lmemmove_loop:
+ mvc 0(256,%r1),0(%r3)
+ la %r1,256(%r1)
+ la %r3,256(%r3)
+ brctg %r0,.Lmemmove_loop
+.Lmemmove_rest:
+ larl %r5,.Lmemmove_mvc
+ ex %r4,0(%r5)
+ br %r14
+.Lmemmove_reverse:
+ aghi %r4,-1
+.Lmemmove_reverse_loop:
+ ic %r0,0(%r4,%r3)
+ stc %r0,0(%r4,%r1)
+ brctg %r4,.Lmemmove_reverse_loop
+ ic %r0,0(%r4,%r3)
+ stc %r0,0(%r4,%r1)
+ br %r14
+.Lmemmove_mvc:
+ mvc 0(1,%r1),0(%r3)
+EXPORT_SYMBOL(memmove)
+
+/*
* memset implementation
*
* This code corresponds to the C construct below. We do distinguish
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 661d9fe63c43..d1faae5cdd12 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -733,6 +733,7 @@ block:
* return to userspace schedule() to block. */
__set_current_state(TASK_UNINTERRUPTIBLE);
set_tsk_need_resched(tsk);
+ set_preempt_need_resched();
}
}
out:
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c
index 1848292766ef..45becc8a44ec 100644
--- a/arch/s390/mm/vmem.c
+++ b/arch/s390/mm/vmem.c
@@ -34,7 +34,7 @@ static void __ref *vmem_alloc_pages(unsigned int order)
if (slab_is_available())
return (void *)__get_free_pages(GFP_KERNEL, order);
- return alloc_bootmem_align(size, size);
+ return (void *) memblock_alloc(size, size);
}
static inline pud_t *vmem_pud_alloc(void)
@@ -61,17 +61,16 @@ pmd_t *vmem_pmd_alloc(void)
pte_t __ref *vmem_pte_alloc(void)
{
+ unsigned long size = PTRS_PER_PTE * sizeof(pte_t);
pte_t *pte;
if (slab_is_available())
pte = (pte_t *) page_table_alloc(&init_mm);
else
- pte = alloc_bootmem_align(PTRS_PER_PTE * sizeof(pte_t),
- PTRS_PER_PTE * sizeof(pte_t));
+ pte = (pte_t *) memblock_alloc(size, size);
if (!pte)
return NULL;
- clear_table((unsigned long *) pte, _PAGE_INVALID,
- PTRS_PER_PTE * sizeof(pte_t));
+ clear_table((unsigned long *) pte, _PAGE_INVALID, size);
return pte;
}
diff --git a/arch/s390/numa/mode_emu.c b/arch/s390/numa/mode_emu.c
index 37e0bb835516..cfd08384f0ab 100644
--- a/arch/s390/numa/mode_emu.c
+++ b/arch/s390/numa/mode_emu.c
@@ -21,6 +21,7 @@
#include <linux/kernel.h>
#include <linux/cpumask.h>
#include <linux/memblock.h>
+#include <linux/bootmem.h>
#include <linux/node.h>
#include <linux/memory.h>
#include <linux/slab.h>
@@ -307,13 +308,11 @@ fail:
/*
* Allocate and initialize core to node mapping
*/
-static void create_core_to_node_map(void)
+static void __ref create_core_to_node_map(void)
{
int i;
- emu_cores = kzalloc(sizeof(*emu_cores), GFP_KERNEL);
- if (emu_cores == NULL)
- panic("Could not allocate cores to node memory");
+ emu_cores = memblock_virt_alloc(sizeof(*emu_cores), 8);
for (i = 0; i < ARRAY_SIZE(emu_cores->to_node_id); i++)
emu_cores->to_node_id[i] = NODE_ID_FREE;
}
@@ -354,13 +353,13 @@ static struct toptree *toptree_from_topology(void)
phys = toptree_new(TOPTREE_ID_PHYS, 1);
- for_each_online_cpu(cpu) {
- top = &per_cpu(cpu_topology, cpu);
+ for_each_cpu(cpu, &cpus_with_topology) {
+ top = &cpu_topology[cpu];
node = toptree_get_child(phys, 0);
drawer = toptree_get_child(node, top->drawer_id);
book = toptree_get_child(drawer, top->book_id);
mc = toptree_get_child(book, top->socket_id);
- core = toptree_get_child(mc, top->core_id);
+ core = toptree_get_child(mc, smp_get_base_cpu(cpu));
if (!drawer || !book || !mc || !core)
panic("NUMA emulation could not allocate memory");
cpumask_set_cpu(cpu, &core->mask);
@@ -378,7 +377,7 @@ static void topology_add_core(struct toptree *core)
int cpu;
for_each_cpu(cpu, &core->mask) {
- top = &per_cpu(cpu_topology, cpu);
+ top = &cpu_topology[cpu];
cpumask_copy(&top->thread_mask, &core->mask);
cpumask_copy(&top->core_mask, &core_mc(core)->mask);
cpumask_copy(&top->book_mask, &core_book(core)->mask);
@@ -425,6 +424,27 @@ static void print_node_to_core_map(void)
}
}
+static void pin_all_possible_cpus(void)
+{
+ int core_id, node_id, cpu;
+ static int initialized;
+
+ if (initialized)
+ return;
+ print_node_to_core_map();
+ node_id = 0;
+ for_each_possible_cpu(cpu) {
+ core_id = smp_get_base_cpu(cpu);
+ if (emu_cores->to_node_id[core_id] != NODE_ID_FREE)
+ continue;
+ pin_core_to_node(core_id, node_id);
+ cpu_topology[cpu].node_id = node_id;
+ node_id = (node_id + 1) % emu_nodes;
+ }
+ print_node_to_core_map();
+ initialized = 1;
+}
+
/*
* Transfer physical topology into a NUMA topology and modify CPU masks
* according to the NUMA topology.
@@ -442,7 +462,7 @@ static void emu_update_cpu_topology(void)
toptree_free(phys);
toptree_to_topology(numa);
toptree_free(numa);
- print_node_to_core_map();
+ pin_all_possible_cpus();
}
/*
diff --git a/arch/s390/numa/toptree.c b/arch/s390/numa/toptree.c
index 902d350d859a..26f622b1cd11 100644
--- a/arch/s390/numa/toptree.c
+++ b/arch/s390/numa/toptree.c
@@ -7,6 +7,7 @@
*/
#include <linux/kernel.h>
+#include <linux/bootmem.h>
#include <linux/cpumask.h>
#include <linux/list.h>
#include <linux/list_sort.h>
@@ -25,10 +26,14 @@
* RETURNS:
* Pointer to the new tree node or NULL on error
*/
-struct toptree *toptree_alloc(int level, int id)
+struct toptree __ref *toptree_alloc(int level, int id)
{
- struct toptree *res = kzalloc(sizeof(struct toptree), GFP_KERNEL);
+ struct toptree *res;
+ if (slab_is_available())
+ res = kzalloc(sizeof(*res), GFP_KERNEL);
+ else
+ res = memblock_virt_alloc(sizeof(*res), 8);
if (!res)
return res;
@@ -65,7 +70,7 @@ static void toptree_remove(struct toptree *cand)
* cleanly using toptree_remove. Possible children are freed
* recursively. In the end @cand itself is freed.
*/
-void toptree_free(struct toptree *cand)
+void __ref toptree_free(struct toptree *cand)
{
struct toptree *child, *tmp;
@@ -73,7 +78,10 @@ void toptree_free(struct toptree *cand)
toptree_remove(cand);
toptree_for_each_child_safe(child, tmp, cand)
toptree_free(child);
- kfree(cand);
+ if (slab_is_available())
+ kfree(cand);
+ else
+ memblock_free_early((unsigned long)cand, sizeof(*cand));
}
/**
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 15ffc19c8c0c..64e1734bebb7 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -722,6 +722,11 @@ struct dev_pm_ops pcibios_pm_ops = {
static int zpci_alloc_domain(struct zpci_dev *zdev)
{
+ if (zpci_unique_uid) {
+ zdev->domain = (u16) zdev->uid;
+ return 0;
+ }
+
spin_lock(&zpci_domain_lock);
zdev->domain = find_first_zero_bit(zpci_domain, ZPCI_NR_DEVICES);
if (zdev->domain == ZPCI_NR_DEVICES) {
@@ -735,6 +740,9 @@ static int zpci_alloc_domain(struct zpci_dev *zdev)
static void zpci_free_domain(struct zpci_dev *zdev)
{
+ if (zpci_unique_uid)
+ return;
+
spin_lock(&zpci_domain_lock);
clear_bit(zdev->domain, zpci_domain);
spin_unlock(&zpci_domain_lock);
diff --git a/arch/s390/pci/pci_clp.c b/arch/s390/pci/pci_clp.c
index 1a4512c8544a..e3ef63b36b5a 100644
--- a/arch/s390/pci/pci_clp.c
+++ b/arch/s390/pci/pci_clp.c
@@ -22,6 +22,8 @@
#include <asm/clp.h>
#include <uapi/asm/clp.h>
+bool zpci_unique_uid;
+
static inline void zpci_err_clp(unsigned int rsp, int rc)
{
struct {
@@ -315,6 +317,7 @@ static int clp_list_pci(struct clp_req_rsp_list_pci *rrb,
goto out;
}
+ zpci_unique_uid = rrb->response.uid_checking;
WARN_ON_ONCE(rrb->response.entry_size !=
sizeof(struct clp_fh_list_entry));
diff --git a/arch/s390/pci/pci_debug.c b/arch/s390/pci/pci_debug.c
index 38993b156924..c2f786f0ea06 100644
--- a/arch/s390/pci/pci_debug.c
+++ b/arch/s390/pci/pci_debug.c
@@ -69,7 +69,7 @@ static void pci_sw_counter_show(struct seq_file *m)
int i;
for (i = 0; i < ARRAY_SIZE(pci_sw_names); i++, counter++)
- seq_printf(m, "%26s:\t%llu\n", pci_sw_names[i],
+ seq_printf(m, "%26s:\t%lu\n", pci_sw_names[i],
atomic64_read(counter));
}
diff --git a/arch/s390/pci/pci_dma.c b/arch/s390/pci/pci_dma.c
index 6b2f72f523b9..1d7a9c71944a 100644
--- a/arch/s390/pci/pci_dma.c
+++ b/arch/s390/pci/pci_dma.c
@@ -181,14 +181,17 @@ static int __dma_purge_tlb(struct zpci_dev *zdev, dma_addr_t dma_addr,
/*
* With zdev->tlb_refresh == 0, rpcit is not required to establish new
* translations when previously invalid translation-table entries are
- * validated. With lazy unmap, it also is skipped for previously valid
+ * validated. With lazy unmap, rpcit is skipped for previously valid
* entries, but a global rpcit is then required before any address can
* be re-used, i.e. after each iommu bitmap wrap-around.
*/
- if (!zdev->tlb_refresh &&
- (!s390_iommu_strict ||
- ((flags & ZPCI_PTE_VALID_MASK) == ZPCI_PTE_VALID)))
- return 0;
+ if ((flags & ZPCI_PTE_VALID_MASK) == ZPCI_PTE_VALID) {
+ if (!zdev->tlb_refresh)
+ return 0;
+ } else {
+ if (!s390_iommu_strict)
+ return 0;
+ }
return zpci_refresh_trans((u64) zdev->fh << 32, dma_addr,
PAGE_ALIGN(size));
@@ -257,7 +260,7 @@ static dma_addr_t dma_alloc_address(struct device *dev, int size)
spin_lock_irqsave(&zdev->iommu_bitmap_lock, flags);
offset = __dma_alloc_iommu(dev, zdev->next_bit, size);
if (offset == -1) {
- if (!zdev->tlb_refresh && !s390_iommu_strict) {
+ if (!s390_iommu_strict) {
/* global flush before DMA addresses are reused */
if (zpci_refresh_global(zdev))
goto out_error;
@@ -292,7 +295,7 @@ static void dma_free_address(struct device *dev, dma_addr_t dma_addr, int size)
if (!zdev->iommu_bitmap)
goto out;
- if (zdev->tlb_refresh || s390_iommu_strict)
+ if (s390_iommu_strict)
bitmap_clear(zdev->iommu_bitmap, offset, size);
else
bitmap_set(zdev->lazy_bitmap, offset, size);
@@ -388,8 +391,6 @@ static void *s390_dma_alloc(struct device *dev, size_t size,
return NULL;
pa = page_to_phys(page);
- memset((void *) pa, 0, size);
-
map = s390_dma_map_pages(dev, page, 0, size, DMA_BIDIRECTIONAL, 0);
if (dma_mapping_error(dev, map)) {
free_pages(pa, get_order(size));
@@ -419,6 +420,7 @@ static int __s390_dma_map_sg(struct device *dev, struct scatterlist *sg,
size_t size, dma_addr_t *handle,
enum dma_data_direction dir)
{
+ unsigned long nr_pages = PAGE_ALIGN(size) >> PAGE_SHIFT;
struct zpci_dev *zdev = to_zpci(to_pci_dev(dev));
dma_addr_t dma_addr_base, dma_addr;
int flags = ZPCI_PTE_VALID;
@@ -426,8 +428,7 @@ static int __s390_dma_map_sg(struct device *dev, struct scatterlist *sg,
unsigned long pa = 0;
int ret;
- size = PAGE_ALIGN(size);
- dma_addr_base = dma_alloc_address(dev, size >> PAGE_SHIFT);
+ dma_addr_base = dma_alloc_address(dev, nr_pages);
if (dma_addr_base == DMA_ERROR_CODE)
return -ENOMEM;
@@ -436,26 +437,27 @@ static int __s390_dma_map_sg(struct device *dev, struct scatterlist *sg,
flags |= ZPCI_TABLE_PROTECTED;
for (s = sg; dma_addr < dma_addr_base + size; s = sg_next(s)) {
- pa = page_to_phys(sg_page(s)) + s->offset;
- ret = __dma_update_trans(zdev, pa, dma_addr, s->length, flags);
+ pa = page_to_phys(sg_page(s));
+ ret = __dma_update_trans(zdev, pa, dma_addr,
+ s->offset + s->length, flags);
if (ret)
goto unmap;
- dma_addr += s->length;
+ dma_addr += s->offset + s->length;
}
ret = __dma_purge_tlb(zdev, dma_addr_base, size, flags);
if (ret)
goto unmap;
*handle = dma_addr_base;
- atomic64_add(size >> PAGE_SHIFT, &zdev->mapped_pages);
+ atomic64_add(nr_pages, &zdev->mapped_pages);
return ret;
unmap:
dma_update_trans(zdev, 0, dma_addr_base, dma_addr - dma_addr_base,
ZPCI_PTE_INVALID);
- dma_free_address(dev, dma_addr_base, size >> PAGE_SHIFT);
+ dma_free_address(dev, dma_addr_base, nr_pages);
zpci_err("map error:\n");
zpci_err_dma(ret, pa);
return ret;
@@ -564,7 +566,7 @@ int zpci_dma_init_device(struct zpci_dev *zdev)
rc = -ENOMEM;
goto free_dma_table;
}
- if (!zdev->tlb_refresh && !s390_iommu_strict) {
+ if (!s390_iommu_strict) {
zdev->lazy_bitmap = vzalloc(zdev->iommu_pages / 8);
if (!zdev->lazy_bitmap) {
rc = -ENOMEM;
diff --git a/arch/s390/tools/Makefile b/arch/s390/tools/Makefile
index 6d9814c9df2b..4b5e1e499527 100644
--- a/arch/s390/tools/Makefile
+++ b/arch/s390/tools/Makefile
@@ -9,7 +9,5 @@ define filechk_facilities.h
$(obj)/gen_facilities
endef
-$(obj)/gen_facilities.o: $(srctree)/arch/s390/tools/gen_facilities.c
-
include/generated/facilities.h: $(obj)/gen_facilities FORCE
$(call filechk,facilities.h)
diff --git a/arch/s390/tools/gen_facilities.c b/arch/s390/tools/gen_facilities.c
index fe4e6c910dd7..8cc53b1e6d03 100644
--- a/arch/s390/tools/gen_facilities.c
+++ b/arch/s390/tools/gen_facilities.c
@@ -7,13 +7,83 @@
*
*/
-#define S390_GEN_FACILITIES_C
-
#include <strings.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
-#include <asm/facilities_src.h>
+
+struct facility_def {
+ char *name;
+ int *bits;
+};
+
+static struct facility_def facility_defs[] = {
+ {
+ /*
+ * FACILITIES_ALS contains the list of facilities that are
+ * required to run a kernel that is compiled e.g. with
+ * -march=<machine>.
+ */
+ .name = "FACILITIES_ALS",
+ .bits = (int[]){
+#ifdef CONFIG_HAVE_MARCH_Z900_FEATURES
+ 0, /* N3 instructions */
+ 1, /* z/Arch mode installed */
+#endif
+#ifdef CONFIG_HAVE_MARCH_Z990_FEATURES
+ 18, /* long displacement facility */
+#endif
+#ifdef CONFIG_HAVE_MARCH_Z9_109_FEATURES
+ 7, /* stfle */
+ 17, /* message security assist */
+ 21, /* extended-immediate facility */
+ 25, /* store clock fast */
+#endif
+#ifdef CONFIG_HAVE_MARCH_Z10_FEATURES
+ 27, /* mvcos */
+ 32, /* compare and swap and store */
+ 33, /* compare and swap and store 2 */
+ 34, /* general extension facility */
+ 35, /* execute extensions */
+#endif
+#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
+ 45, /* fast-BCR, etc. */
+#endif
+#ifdef CONFIG_HAVE_MARCH_ZEC12_FEATURES
+ 49, /* misc-instruction-extensions */
+ 52, /* interlocked facility 2 */
+#endif
+#ifdef CONFIG_HAVE_MARCH_Z13_FEATURES
+ 53, /* load-and-zero-rightmost-byte, etc. */
+#endif
+ -1 /* END */
+ }
+ },
+ {
+ .name = "FACILITIES_KVM",
+ .bits = (int[]){
+ 0, /* N3 instructions */
+ 1, /* z/Arch mode installed */
+ 2, /* z/Arch mode active */
+ 3, /* DAT-enhancement */
+ 4, /* idte segment table */
+ 5, /* idte region table */
+ 6, /* ASN-and-LX reuse */
+ 7, /* stfle */
+ 8, /* enhanced-DAT 1 */
+ 9, /* sense-running-status */
+ 10, /* conditional sske */
+ 13, /* ipte-range */
+ 14, /* nonquiescing key-setting */
+ 73, /* transactional execution */
+ 75, /* access-exception-fetch/store indication */
+ 76, /* msa extension 3 */
+ 77, /* msa extension 4 */
+ 78, /* enhanced-DAT 2 */
+ -1 /* END */
+ }
+ },
+};
static void print_facility_list(struct facility_def *def)
{