Merge branch 'akpm'

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

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index b3ce581..ab462b9 100644 (file)
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -27,6 +27,7 @@
 #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>
 #include <linux/init.h>
@@ -49,6 +50,7 @@
 #include <linux/reboot.h>
 #include <linux/ftrace.h>
 #include <linux/slow-work.h>
+#include <linux/perf_counter.h>
 
 #include <asm/uaccess.h>
 #include <asm/processor.h>
@@ -101,7 +103,9 @@ static int __maybe_unused one = 1;
 static int __maybe_unused two = 2;
 static unsigned long one_ul = 1;
 static int one_hundred = 100;
-static int one_thousand = 1000;
+
+/* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */
+static unsigned long dirty_bytes_min = 2 * PAGE_SIZE;
 
 /* this is needed for the proc_dointvec_minmax for [fs_]overflow UID and GID */
 static int maxolduid = 65535;
@@ -112,6 +116,7 @@ static int ngroups_max = NGROUPS_MAX;
 
 #ifdef CONFIG_MODULES
 extern char modprobe_path[];
+extern int modules_disabled;
 #endif
 #ifdef CONFIG_CHR_DEV_SG
 extern int sg_big_buff;
@@ -540,6 +545,17 @@ static struct ctl_table kern_table[] = {
                .proc_handler   = &proc_dostring,
                .strategy       = &sysctl_string,
        },
+       {
+               .ctl_name       = CTL_UNNUMBERED,
+               .procname       = "modules_disabled",
+               .data           = &modules_disabled,
+               .maxlen         = sizeof(int),
+               .mode           = 0644,
+               /* only handle a transition from default "0" to "1" */
+               .proc_handler   = &proc_dointvec_minmax,
+               .extra1         = &one,
+               .extra2         = &one,
+       },
 #endif
 #if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET)
        {
@@ -737,6 +753,14 @@ static struct ctl_table kern_table[] = {
        },
        {
                .ctl_name       = CTL_UNNUMBERED,
+               .procname       = "bootloader_version",
+               .data           = &bootloader_version,
+               .maxlen         = sizeof (int),
+               .mode           = 0444,
+               .proc_handler   = &proc_dointvec,
+       },
+       {
+               .ctl_name       = CTL_UNNUMBERED,
                .procname       = "kstack_depth_to_print",
                .data           = &kstack_depth_to_print,
                .maxlen         = sizeof(int),
@@ -918,6 +942,43 @@ static struct ctl_table kern_table[] = {
                .child          = slow_work_sysctls,
        },
 #endif
+#ifdef CONFIG_PERF_COUNTERS
+       {
+               .ctl_name       = CTL_UNNUMBERED,
+               .procname       = "perf_counter_paranoid",
+               .data           = &sysctl_perf_counter_paranoid,
+               .maxlen         = sizeof(sysctl_perf_counter_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),
+               .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),
+               .mode           = 0644,
+               .proc_handler   = &proc_dointvec,
+       },
+#endif
+#ifdef CONFIG_KMEMCHECK
+       {
+               .ctl_name       = CTL_UNNUMBERED,
+               .procname       = "kmemcheck",
+               .data           = &kmemcheck_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
@@ -1014,7 +1075,7 @@ static struct ctl_table vm_table[] = {
                .mode           = 0644,
                .proc_handler   = &dirty_bytes_handler,
                .strategy       = &sysctl_intvec,
-               .extra1         = &one_ul,
+               .extra1         = &dirty_bytes_min,
        },
        {
                .procname       = "dirty_writeback_centisecs",
@@ -1039,28 +1100,6 @@ static struct ctl_table vm_table[] = {
                .proc_handler   = &proc_dointvec,
        },
        {
-               .ctl_name       = CTL_UNNUMBERED,
-               .procname       = "nr_pdflush_threads_min",
-               .data           = &nr_pdflush_threads_min,
-               .maxlen         = sizeof nr_pdflush_threads_min,
-               .mode           = 0644 /* read-write */,
-               .proc_handler   = &proc_dointvec_minmax,
-               .strategy       = &sysctl_intvec,
-               .extra1         = &one,
-               .extra2         = &nr_pdflush_threads_max,
-       },
-       {
-               .ctl_name       = CTL_UNNUMBERED,
-               .procname       = "nr_pdflush_threads_max",
-               .data           = &nr_pdflush_threads_max,
-               .maxlen         = sizeof nr_pdflush_threads_max,
-               .mode           = 0644 /* read-write */,
-               .proc_handler   = &proc_dointvec_minmax,
-               .strategy       = &sysctl_intvec,
-               .extra1         = &nr_pdflush_threads_min,
-               .extra2         = &one_thousand,
-       },
-       {
                .ctl_name       = VM_SWAPPINESS,
                .procname       = "swappiness",
                .data           = &vm_swappiness,
@@ -1253,7 +1292,6 @@ static struct ctl_table vm_table[] = {
                .strategy       = &sysctl_jiffies,
        },
 #endif
-#ifdef CONFIG_SECURITY
        {
                .ctl_name       = CTL_UNNUMBERED,
                .procname       = "mmap_min_addr",
@@ -1262,7 +1300,6 @@ static struct ctl_table vm_table[] = {
                .mode           = 0644,
                .proc_handler   = &proc_doulongvec_minmax,
        },
-#endif
 #ifdef CONFIG_NUMA
        {
                .ctl_name       = CTL_UNNUMBERED,
@@ -1300,7 +1337,6 @@ static struct ctl_table vm_table[] = {
                .extra2         = &one,
        },
 #endif
-#ifdef CONFIG_UNEVICTABLE_LRU
        {
                .ctl_name       = CTL_UNNUMBERED,
                .procname       = "scan_unevictable_pages",
@@ -1309,7 +1345,6 @@ static struct ctl_table vm_table[] = {
                .mode           = 0644,
                .proc_handler   = &scan_unevictable_handler,
        },
-#endif
 /*
  * NOTE: do not add new entries to this table unless you have read
  * Documentation/sysctl/ctl_unnumbered.txt