diff options
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 38 | ||||
| -rw-r--r-- | init/main.c | 69 |
2 files changed, 39 insertions, 68 deletions
diff --git a/init/Kconfig b/init/Kconfig index 5cff9a980c39..2de5b1cbadd9 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -320,13 +320,17 @@ config AUDITSYSCALL help Enable low-overhead system-call auditing infrastructure that can be used independently or with another kernel subsystem, - such as SELinux. To use audit's filesystem watch feature, please - ensure that INOTIFY is configured. + such as SELinux. + +config AUDIT_WATCH + def_bool y + depends on AUDITSYSCALL + select FSNOTIFY config AUDIT_TREE def_bool y depends on AUDITSYSCALL - select INOTIFY + select FSNOTIFY menu "RCU Subsystem" @@ -573,8 +577,8 @@ config CGROUP_MEM_RES_CTLR could in turn add some fork/exit overhead. config CGROUP_MEM_RES_CTLR_SWAP - bool "Memory Resource Controller Swap Extension(EXPERIMENTAL)" - depends on CGROUP_MEM_RES_CTLR && SWAP && EXPERIMENTAL + bool "Memory Resource Controller Swap Extension" + depends on CGROUP_MEM_RES_CTLR && SWAP help Add swap management feature to memory resource controller. When you enable this, you can limit mem+swap usage per cgroup. In other words, @@ -1143,30 +1147,6 @@ config TRACEPOINTS source "arch/Kconfig" -config SLOW_WORK - default n - bool - help - The slow work thread pool provides a number of dynamically allocated - threads that can be used by the kernel to perform operations that - take a relatively long time. - - An example of this would be CacheFiles doing a path lookup followed - by a series of mkdirs and a create call, all of which have to touch - disk. - - See Documentation/slow-work.txt. - -config SLOW_WORK_DEBUG - bool "Slow work debugging through debugfs" - default n - depends on SLOW_WORK && DEBUG_FS - help - Display the contents of the slow work run queue through debugfs, - including items currently executing. - - See Documentation/slow-work.txt. - endmenu # General setup config HAVE_GENERIC_DMA_COHERENT diff --git a/init/main.c b/init/main.c index a42fdf4aeba9..22d61cb06f98 100644 --- a/init/main.c +++ b/init/main.c @@ -32,7 +32,6 @@ #include <linux/start_kernel.h> #include <linux/security.h> #include <linux/smp.h> -#include <linux/workqueue.h> #include <linux/profile.h> #include <linux/rcupdate.h> #include <linux/moduleparam.h> @@ -66,11 +65,9 @@ #include <linux/ftrace.h> #include <linux/async.h> #include <linux/kmemcheck.h> -#include <linux/kmemtrace.h> #include <linux/sfi.h> #include <linux/shmem_fs.h> #include <linux/slab.h> -#include <trace/boot.h> #include <asm/io.h> #include <asm/bugs.h> @@ -204,11 +201,11 @@ static char * argv_init[MAX_INIT_ARGS+2] = { "init", NULL, }; char * envp_init[MAX_INIT_ENVS+2] = { "HOME=/", "TERM=linux", NULL, }; static const char *panic_later, *panic_param; -extern struct obs_kernel_param __setup_start[], __setup_end[]; +extern const struct obs_kernel_param __setup_start[], __setup_end[]; static int __init obsolete_checksetup(char *line) { - struct obs_kernel_param *p; + const struct obs_kernel_param *p; int had_early_param = 0; p = __setup_start; @@ -444,7 +441,6 @@ static noinline void __init_refok rest_init(void) kthreadd_task = find_task_by_pid_ns(pid, &init_pid_ns); rcu_read_unlock(); complete(&kthreadd_done); - unlock_kernel(); /* * The boot idle thread must execute schedule() @@ -462,7 +458,7 @@ static noinline void __init_refok rest_init(void) /* Check for early params. */ static int __init do_early_param(char *param, char *val) { - struct obs_kernel_param *p; + const struct obs_kernel_param *p; for (p = __setup_start; p < __setup_end; p++) { if ((p->early && strcmp(param, p->str) == 0) || @@ -532,6 +528,7 @@ static void __init mm_init(void) page_cgroup_init_flatmem(); mem_init(); kmem_cache_init(); + percpu_init_late(); pgtable_cache_init(); vmalloc_init(); } @@ -539,7 +536,7 @@ static void __init mm_init(void) asmlinkage void __init start_kernel(void) { char * command_line; - extern struct kernel_param __start___param[], __stop___param[]; + extern const struct kernel_param __start___param[], __stop___param[]; smp_setup_processor_id(); @@ -565,7 +562,6 @@ asmlinkage void __init start_kernel(void) * Interrupts are still disabled. Do necessary setups, then * enable them */ - lock_kernel(); tick_init(); boot_cpu_init(); page_address_init(); @@ -663,7 +659,6 @@ asmlinkage void __init start_kernel(void) #endif page_cgroup_init(); enable_debug_pagealloc(); - kmemtrace_init(); kmemleak_init(); debug_objects_mem_init(); idr_init_cache(); @@ -725,38 +720,39 @@ int initcall_debug; core_param(initcall_debug, initcall_debug, bool, 0644); static char msgbuf[64]; -static struct boot_trace_call call; -static struct boot_trace_ret ret; -int do_one_initcall(initcall_t fn) +static int __init_or_module do_one_initcall_debug(initcall_t fn) { - int count = preempt_count(); ktime_t calltime, delta, rettime; + unsigned long long duration; + int ret; - if (initcall_debug) { - call.caller = task_pid_nr(current); - printk("calling %pF @ %i\n", fn, call.caller); - calltime = ktime_get(); - trace_boot_call(&call, fn); - enable_boot_trace(); - } + printk(KERN_DEBUG "calling %pF @ %i\n", fn, task_pid_nr(current)); + calltime = ktime_get(); + ret = fn(); + rettime = ktime_get(); + delta = ktime_sub(rettime, calltime); + duration = (unsigned long long) ktime_to_ns(delta) >> 10; + printk(KERN_DEBUG "initcall %pF returned %d after %lld usecs\n", fn, + ret, duration); - ret.result = fn(); + return ret; +} - if (initcall_debug) { - disable_boot_trace(); - rettime = ktime_get(); - delta = ktime_sub(rettime, calltime); - ret.duration = (unsigned long long) ktime_to_ns(delta) >> 10; - trace_boot_ret(&ret, fn); - printk("initcall %pF returned %d after %Ld usecs\n", fn, - ret.result, ret.duration); - } +int __init_or_module do_one_initcall(initcall_t fn) +{ + int count = preempt_count(); + int ret; + + if (initcall_debug) + ret = do_one_initcall_debug(fn); + else + ret = fn(); msgbuf[0] = 0; - if (ret.result && ret.result != -ENODEV && initcall_debug) - sprintf(msgbuf, "error code %d ", ret.result); + if (ret && ret != -ENODEV && initcall_debug) + sprintf(msgbuf, "error code %d ", ret); if (preempt_count() != count) { strlcat(msgbuf, "preemption imbalance ", sizeof(msgbuf)); @@ -770,7 +766,7 @@ int do_one_initcall(initcall_t fn) printk("initcall %pF returned with %s\n", fn, msgbuf); } - return ret.result; + return ret; } @@ -796,7 +792,6 @@ static void __init do_initcalls(void) */ static void __init do_basic_setup(void) { - init_workqueues(); cpuset_init_smp(); usermodehelper_init(); init_tmpfs(); @@ -829,7 +824,6 @@ static noinline int init_post(void) /* need to finish all async __init code before freeing the memory */ async_synchronize_full(); free_initmem(); - unlock_kernel(); mark_rodata_ro(); system_state = SYSTEM_RUNNING; numa_default_policy(); @@ -869,8 +863,6 @@ static int __init kernel_init(void * unused) * Wait until kthreadd is all set-up. */ wait_for_completion(&kthreadd_done); - lock_kernel(); - /* * init can allocate pages on any node */ @@ -894,7 +886,6 @@ static int __init kernel_init(void * unused) smp_prepare_cpus(setup_max_cpus); do_pre_smp_initcalls(); - start_boot_trace(); smp_init(); sched_init_smp(); |