intelfb delousing

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

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index cb99a42..eb8bd21 100644 (file)
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -44,13 +44,14 @@
 #include <linux/limits.h>
 #include <linux/dcache.h>
 #include <linux/syscalls.h>
+#include <linux/nfs_fs.h>
+#include <linux/acpi.h>
 
 #include <asm/uaccess.h>
 #include <asm/processor.h>
 
-#ifdef CONFIG_ROOT_NFS
-#include <linux/nfs_fs.h>
-#endif
+extern int proc_nr_files(ctl_table *table, int write, struct file *filp,
+                     void __user *buffer, size_t *lenp, loff_t *ppos);
 
 #if defined(CONFIG_SYSCTL)
 
@@ -58,6 +59,7 @@
 extern int C_A_D;
 extern int sysctl_overcommit_memory;
 extern int sysctl_overcommit_ratio;
+extern int sysctl_panic_on_oom;
 extern int max_threads;
 extern int sysrq_enabled;
 extern int core_uses_pid;
@@ -126,7 +128,9 @@ extern int sysctl_hz_timer;
 extern int acct_parm[];
 #endif
 
-int randomize_va_space = 1;
+#ifdef CONFIG_IA64
+extern int no_unaligned_warning;
+#endif
 
 static int parse_table(int __user *, int, void __user *, size_t __user *, void __user *, size_t,
                       ctl_table *, void **);
@@ -147,7 +151,7 @@ extern ctl_table random_table[];
 #ifdef CONFIG_UNIX98_PTYS
 extern ctl_table pty_table[];
 #endif
-#ifdef CONFIG_INOTIFY
+#ifdef CONFIG_INOTIFY_USER
 extern ctl_table inotify_table[];
 #endif
 
@@ -395,7 +399,7 @@ static ctl_table kern_table[] = {
                .strategy       = &sysctl_string,
        },
 #endif
-#ifdef CONFIG_HOTPLUG
+#if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET)
        {
                .ctl_name       = KERN_HOTPLUG,
                .procname       = "hotplug",
@@ -640,6 +644,7 @@ static ctl_table kern_table[] = {
                .proc_handler   = &proc_dointvec,
        },
 #endif
+#if defined(CONFIG_MMU)
        {
                .ctl_name       = KERN_RANDOMIZE,
                .procname       = "randomize_va_space",
@@ -648,6 +653,7 @@ static ctl_table kern_table[] = {
                .mode           = 0644,
                .proc_handler   = &proc_dointvec,
        },
+#endif
 #if defined(CONFIG_S390) && defined(CONFIG_SMP)
        {
                .ctl_name       = KERN_SPIN_RETRY,
@@ -658,6 +664,26 @@ static ctl_table kern_table[] = {
                .proc_handler   = &proc_dointvec,
        },
 #endif
+#ifdef CONFIG_ACPI_SLEEP
+       {
+               .ctl_name       = KERN_ACPI_VIDEO_FLAGS,
+               .procname       = "acpi_video_flags",
+               .data           = &acpi_video_flags,
+               .maxlen         = sizeof (unsigned long),
+               .mode           = 0644,
+               .proc_handler   = &proc_doulongvec_minmax,
+       },
+#endif
+#ifdef CONFIG_IA64
+       {
+               .ctl_name       = KERN_IA64_UNALIGNED,
+               .procname       = "ignore-unaligned-usertrap",
+               .data           = &no_unaligned_warning,
+               .maxlen         = sizeof (int),
+               .mode           = 0644,
+               .proc_handler   = &proc_dointvec,
+       },
+#endif
        { .ctl_name = 0 }
 };
 
@@ -677,6 +703,14 @@ static ctl_table vm_table[] = {
                .proc_handler   = &proc_dointvec,
        },
        {
+               .ctl_name       = VM_PANIC_ON_OOM,
+               .procname       = "panic_on_oom",
+               .data           = &sysctl_panic_on_oom,
+               .maxlen         = sizeof(sysctl_panic_on_oom),
+               .mode           = 0644,
+               .proc_handler   = &proc_dointvec,
+       },
+       {
                .ctl_name       = VM_OVERCOMMIT_RATIO,
                .procname       = "overcommit_ratio",
                .data           = &sysctl_overcommit_ratio,
@@ -717,18 +751,18 @@ static ctl_table vm_table[] = {
        {
                .ctl_name       = VM_DIRTY_WB_CS,
                .procname       = "dirty_writeback_centisecs",
-               .data           = &dirty_writeback_centisecs,
-               .maxlen         = sizeof(dirty_writeback_centisecs),
+               .data           = &dirty_writeback_interval,
+               .maxlen         = sizeof(dirty_writeback_interval),
                .mode           = 0644,
                .proc_handler   = &dirty_writeback_centisecs_handler,
        },
        {
                .ctl_name       = VM_DIRTY_EXPIRE_CS,
                .procname       = "dirty_expire_centisecs",
-               .data           = &dirty_expire_centisecs,
-               .maxlen         = sizeof(dirty_expire_centisecs),
+               .data           = &dirty_expire_interval,
+               .maxlen         = sizeof(dirty_expire_interval),
                .mode           = 0644,
-               .proc_handler   = &proc_dointvec,
+               .proc_handler   = &proc_dointvec_userhz_jiffies,
        },
        {
                .ctl_name       = VM_NR_PDFLUSH_THREADS,
@@ -823,9 +857,8 @@ static ctl_table vm_table[] = {
                .data           = &laptop_mode,
                .maxlen         = sizeof(laptop_mode),
                .mode           = 0644,
-               .proc_handler   = &proc_dointvec,
-               .strategy       = &sysctl_intvec,
-               .extra1         = &zero,
+               .proc_handler   = &proc_dointvec_jiffies,
+               .strategy       = &sysctl_jiffies,
        },
        {
                .ctl_name       = VM_BLOCK_DUMP,
@@ -878,7 +911,17 @@ static ctl_table vm_table[] = {
                .maxlen         = sizeof(zone_reclaim_mode),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec,
-               .strategy       = &zero,
+               .strategy       = &sysctl_intvec,
+               .extra1         = &zero,
+       },
+       {
+               .ctl_name       = VM_ZONE_RECLAIM_INTERVAL,
+               .procname       = "zone_reclaim_interval",
+               .data           = &zone_reclaim_interval,
+               .maxlen         = sizeof(zone_reclaim_interval),
+               .mode           = 0644,
+               .proc_handler   = &proc_dointvec_jiffies,
+               .strategy       = &sysctl_jiffies,
        },
 #endif
        { .ctl_name = 0 }
@@ -911,7 +954,7 @@ static ctl_table fs_table[] = {
                .data           = &files_stat,
                .maxlen         = 3*sizeof(int),
                .mode           = 0444,
-               .proc_handler   = &proc_dointvec,
+               .proc_handler   = &proc_nr_files,
        },
        {
                .ctl_name       = FS_MAXFILE,
@@ -994,7 +1037,7 @@ static ctl_table fs_table[] = {
                .mode           = 0644,
                .proc_handler   = &proc_doulongvec_minmax,
        },
-#ifdef CONFIG_INOTIFY
+#ifdef CONFIG_INOTIFY_USER
        {
                .ctl_name       = FS_INOTIFY,
                .procname       = "inotify",
@@ -2019,6 +2062,8 @@ static int do_proc_dointvec_jiffies_conv(int *negp, unsigned long *lvalp,
                                         int write, void *data)
 {
        if (write) {
+               if (*lvalp > LONG_MAX / HZ)
+                       return 1;
                *valp = *negp ? -(*lvalp*HZ) : (*lvalp*HZ);
        } else {
                int val = *valp;
@@ -2040,6 +2085,8 @@ static int do_proc_dointvec_userhz_jiffies_conv(int *negp, unsigned long *lvalp,
                                                int write, void *data)
 {
        if (write) {
+               if (USER_HZ < HZ && *lvalp > (LONG_MAX / HZ) * USER_HZ)
+                       return 1;
                *valp = clock_t_to_jiffies(*negp ? -*lvalp : *lvalp);
        } else {
                int val = *valp;