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-rw-r--r--init/Kconfig59
-rw-r--r--init/main.c9
-rw-r--r--init/version.c4
3 files changed, 43 insertions, 29 deletions
diff --git a/init/Kconfig b/init/Kconfig
index ef80d46a32b6..a92f27da4a27 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -529,7 +529,6 @@ config SRCU
config TASKS_RCU
bool
default n
- depends on !UML
select SRCU
help
This option enables a task-based RCU implementation that uses
@@ -781,19 +780,6 @@ config RCU_NOCB_CPU_ALL
endchoice
-config RCU_EXPEDITE_BOOT
- bool
- default n
- help
- This option enables expedited grace periods at boot time,
- as if rcu_expedite_gp() had been invoked early in boot.
- The corresponding rcu_unexpedite_gp() is invoked from
- rcu_end_inkernel_boot(), which is intended to be invoked
- at the end of the kernel-only boot sequence, just before
- init is exec'ed.
-
- Accept the default if unsure.
-
endmenu # "RCU Subsystem"
config BUILD_BIN2C
@@ -875,17 +861,19 @@ config LOG_CPU_MAX_BUF_SHIFT
13 => 8 KB for each CPU
12 => 4 KB for each CPU
-config NMI_LOG_BUF_SHIFT
- int "Temporary per-CPU NMI log buffer size (12 => 4KB, 13 => 8KB)"
+config PRINTK_SAFE_LOG_BUF_SHIFT
+ int "Temporary per-CPU printk log buffer size (12 => 4KB, 13 => 8KB)"
range 10 21
default 13
- depends on PRINTK_NMI
+ depends on PRINTK
help
- Select the size of a per-CPU buffer where NMI messages are temporary
- stored. They are copied to the main log buffer in a safe context
- to avoid a deadlock. The value defines the size as a power of 2.
+ Select the size of an alternate printk per-CPU buffer where messages
+ printed from usafe contexts are temporary stored. One example would
+ be NMI messages, another one - printk recursion. The messages are
+ copied to the main log buffer in a safe context to avoid a deadlock.
+ The value defines the size as a power of 2.
- NMI messages are rare and limited. The largest one is when
+ Those messages are rare and limited. The largest one is when
a backtrace is printed. It usually fits into 4KB. Select
8KB if you want to be on the safe side.
@@ -1186,6 +1174,10 @@ config CGROUP_DEBUG
Say N.
+config SOCK_CGROUP_DATA
+ bool
+ default n
+
endif # CGROUPS
config CHECKPOINT_RESTORE
@@ -1726,6 +1718,13 @@ config PERF_USE_VMALLOC
help
See tools/perf/design.txt for details
+config PC104
+ bool "PC/104 support"
+ help
+ Expose PC/104 form factor device drivers and options available for
+ selection and configuration. Enable this option if your target
+ machine has a PC/104 bus.
+
menu "Kernel Performance Events And Counters"
config PERF_EVENTS
@@ -1792,6 +1791,20 @@ config SLUB_DEBUG
SLUB sysfs support. /sys/slab will not exist and there will be
no support for cache validation etc.
+config SLUB_MEMCG_SYSFS_ON
+ default n
+ bool "Enable memcg SLUB sysfs support by default" if EXPERT
+ depends on SLUB && SYSFS && MEMCG
+ help
+ SLUB creates a directory under /sys/kernel/slab for each
+ allocation cache to host info and debug files. If memory
+ cgroup is enabled, each cache can have per memory cgroup
+ caches. SLUB can create the same sysfs directories for these
+ caches under /sys/kernel/slab/CACHE/cgroup but it can lead
+ to a very high number of debug files being created. This is
+ controlled by slub_memcg_sysfs boot parameter and this
+ config option determines the parameter's default value.
+
config COMPAT_BRK
bool "Disable heap randomization"
default y
@@ -1993,6 +2006,10 @@ config MODVERSIONS
make them incompatible with the kernel you are running. If
unsure, say N.
+config MODULE_REL_CRCS
+ bool
+ depends on MODVERSIONS
+
config MODULE_SRCVERSION_ALL
bool "Source checksum for all modules"
help
diff --git a/init/main.c b/init/main.c
index b0c9d6facef9..24ea48745061 100644
--- a/init/main.c
+++ b/init/main.c
@@ -12,6 +12,7 @@
#define DEBUG /* Enable initcall_debug */
#include <linux/types.h>
+#include <linux/extable.h>
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <linux/kernel.h>
@@ -580,7 +581,7 @@ asmlinkage __visible void __init start_kernel(void)
timekeeping_init();
time_init();
sched_clock_postinit();
- printk_nmi_init();
+ printk_safe_init();
perf_event_init();
profile_init();
call_function_init();
@@ -625,7 +626,6 @@ asmlinkage __visible void __init start_kernel(void)
numa_policy_init();
if (late_time_init)
late_time_init();
- sched_clock_init();
calibrate_delay();
pidmap_init();
anon_vma_init();
@@ -663,7 +663,6 @@ asmlinkage __visible void __init start_kernel(void)
sfi_init_late();
if (efi_enabled(EFI_RUNTIME_SERVICES)) {
- efi_late_init();
efi_free_boot_services();
}
@@ -925,7 +924,7 @@ static int try_to_run_init_process(const char *init_filename)
static noinline void __init kernel_init_freeable(void);
-#if defined(CONFIG_DEBUG_RODATA) || defined(CONFIG_DEBUG_SET_MODULE_RONX)
+#if defined(CONFIG_STRICT_KERNEL_RWX) || defined(CONFIG_STRICT_MODULE_RWX)
bool rodata_enabled __ro_after_init = true;
static int __init set_debug_rodata(char *str)
{
@@ -934,7 +933,7 @@ static int __init set_debug_rodata(char *str)
__setup("rodata=", set_debug_rodata);
#endif
-#ifdef CONFIG_DEBUG_RODATA
+#ifdef CONFIG_STRICT_KERNEL_RWX
static void mark_readonly(void)
{
if (rodata_enabled)
diff --git a/init/version.c b/init/version.c
index fe41a63efed6..5606341e9efd 100644
--- a/init/version.c
+++ b/init/version.c
@@ -23,9 +23,7 @@ int version_string(LINUX_VERSION_CODE);
#endif
struct uts_namespace init_uts_ns = {
- .kref = {
- .refcount = ATOMIC_INIT(2),
- },
+ .kref = KREF_INIT(2),
.name = {
.sysname = UTS_SYSNAME,
.nodename = UTS_NODENAME,