diff options
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 23 | ||||
| -rw-r--r-- | init/main.c | 7 |
2 files changed, 20 insertions, 10 deletions
diff --git a/init/Kconfig b/init/Kconfig index 2655abb8f310..483ad679aa37 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -861,17 +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. @@ -1706,6 +1708,13 @@ 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 diff --git a/init/main.c b/init/main.c index 6ced14a3df12..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(); @@ -923,7 +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) { @@ -932,7 +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) |