cgroups: use vmalloc for large cgroups pidlist allocations

[safe/jmp/linux-2.6] / kernel / sysctl.c

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 58be760..7f4f57b 100644 (file)
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -26,7 +26,6 @@
 #include <linux/proc_fs.h>
 #include <linux/security.h>
 #include <linux/ctype.h>
-#include <linux/utsname.h>
 #include <linux/kmemcheck.h>
 #include <linux/smp_lock.h>
 #include <linux/fs.h>
@@ -49,9 +48,8 @@
 #include <linux/acpi.h>
 #include <linux/reboot.h>
 #include <linux/ftrace.h>
-#include <linux/security.h>
 #include <linux/slow-work.h>
-#include <linux/perf_counter.h>
+#include <linux/perf_event.h>
 
 #include <asm/uaccess.h>
 #include <asm/processor.h>
@@ -92,6 +90,9 @@ extern int sysctl_nr_trim_pages;
 #ifdef CONFIG_RCU_TORTURE_TEST
 extern int rcutorture_runnable;
 #endif /* #ifdef CONFIG_RCU_TORTURE_TEST */
+#ifdef CONFIG_BLOCK
+extern int blk_iopoll_enabled;
+#endif
 
 /* Constants used for minimum and  maximum */
 #ifdef CONFIG_DETECT_SOFTLOCKUP
@@ -104,6 +105,9 @@ static int __maybe_unused one = 1;
 static int __maybe_unused two = 2;
 static unsigned long one_ul = 1;
 static int one_hundred = 100;
+#ifdef CONFIG_PRINTK
+static int ten_thousand = 10000;
+#endif
 
 /* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */
 static unsigned long dirty_bytes_min = 2 * PAGE_SIZE;
@@ -246,6 +250,14 @@ static int max_wakeup_granularity_ns = NSEC_PER_SEC;       /* 1 second */
 #endif
 
 static struct ctl_table kern_table[] = {
+       {
+               .ctl_name       = CTL_UNNUMBERED,
+               .procname       = "sched_child_runs_first",
+               .data           = &sysctl_sched_child_runs_first,
+               .maxlen         = sizeof(unsigned int),
+               .mode           = 0644,
+               .proc_handler   = &proc_dointvec,
+       },
 #ifdef CONFIG_SCHED_DEBUG
        {
                .ctl_name       = CTL_UNNUMBERED,
@@ -300,14 +312,6 @@ static struct ctl_table kern_table[] = {
        },
        {
                .ctl_name       = CTL_UNNUMBERED,
-               .procname       = "sched_child_runs_first",
-               .data           = &sysctl_sched_child_runs_first,
-               .maxlen         = sizeof(unsigned int),
-               .mode           = 0644,
-               .proc_handler   = &proc_dointvec,
-       },
-       {
-               .ctl_name       = CTL_UNNUMBERED,
                .procname       = "sched_features",
                .data           = &sysctl_sched_features,
                .maxlen         = sizeof(unsigned int),
@@ -332,6 +336,14 @@ static struct ctl_table kern_table[] = {
        },
        {
                .ctl_name       = CTL_UNNUMBERED,
+               .procname       = "sched_time_avg",
+               .data           = &sysctl_sched_time_avg,
+               .maxlen         = sizeof(unsigned int),
+               .mode           = 0644,
+               .proc_handler   = &proc_dointvec,
+       },
+       {
+               .ctl_name       = CTL_UNNUMBERED,
                .procname       = "timer_migration",
                .data           = &sysctl_timer_migration,
                .maxlen         = sizeof(unsigned int),
@@ -712,6 +724,17 @@ static struct ctl_table kern_table[] = {
                .mode           = 0644,
                .proc_handler   = &proc_dointvec,
        },
+       {
+               .ctl_name       = CTL_UNNUMBERED,
+               .procname       = "printk_delay",
+               .data           = &printk_delay_msec,
+               .maxlen         = sizeof(int),
+               .mode           = 0644,
+               .proc_handler   = &proc_dointvec_minmax,
+               .strategy       = &sysctl_intvec,
+               .extra1         = &zero,
+               .extra2         = &ten_thousand,
+       },
 #endif
        {
                .ctl_name       = KERN_NGROUPS_MAX,
@@ -954,28 +977,28 @@ static struct ctl_table kern_table[] = {
                .child          = slow_work_sysctls,
        },
 #endif
-#ifdef CONFIG_PERF_COUNTERS
+#ifdef CONFIG_PERF_EVENTS
        {
                .ctl_name       = CTL_UNNUMBERED,
-               .procname       = "perf_counter_paranoid",
-               .data           = &sysctl_perf_counter_paranoid,
-               .maxlen         = sizeof(sysctl_perf_counter_paranoid),
+               .procname       = "perf_event_paranoid",
+               .data           = &sysctl_perf_event_paranoid,
+               .maxlen         = sizeof(sysctl_perf_event_paranoid),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec,
        },
        {
                .ctl_name       = CTL_UNNUMBERED,
-               .procname       = "perf_counter_mlock_kb",
-               .data           = &sysctl_perf_counter_mlock,
-               .maxlen         = sizeof(sysctl_perf_counter_mlock),
+               .procname       = "perf_event_mlock_kb",
+               .data           = &sysctl_perf_event_mlock,
+               .maxlen         = sizeof(sysctl_perf_event_mlock),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec,
        },
        {
                .ctl_name       = CTL_UNNUMBERED,
-               .procname       = "perf_counter_max_sample_rate",
-               .data           = &sysctl_perf_counter_sample_rate,
-               .maxlen         = sizeof(sysctl_perf_counter_sample_rate),
+               .procname       = "perf_event_max_sample_rate",
+               .data           = &sysctl_perf_event_sample_rate,
+               .maxlen         = sizeof(sysctl_perf_event_sample_rate),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec,
        },
@@ -990,7 +1013,16 @@ static struct ctl_table kern_table[] = {
                .proc_handler   = &proc_dointvec,
        },
 #endif
-
+#ifdef CONFIG_BLOCK
+       {
+               .ctl_name       = CTL_UNNUMBERED,
+               .procname       = "blk_iopoll",
+               .data           = &blk_iopoll_enabled,
+               .maxlen         = sizeof(int),
+               .mode           = 0644,
+               .proc_handler   = &proc_dointvec,
+       },
+#endif
 /*
  * NOTE: do not add new entries to this table unless you have read
  * Documentation/sysctl/ctl_unnumbered.txt