diff options
Diffstat (limited to 'kernel/sysctl.c')
| -rw-r--r-- | kernel/sysctl.c | 37 |
1 files changed, 24 insertions, 13 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c index c0bb32414b1..11d65b531e5 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -56,6 +56,7 @@ #include <linux/kprobes.h> #include <linux/pipe_fs_i.h> #include <linux/oom.h> +#include <linux/kmod.h> #include <asm/uaccess.h> #include <asm/processor.h> @@ -616,6 +617,11 @@ static struct ctl_table kern_table[] = { .child = random_table, }, { + .procname = "usermodehelper", + .mode = 0555, + .child = usermodehelper_table, + }, + { .procname = "overflowuid", .data = &overflowuid, .maxlen = sizeof(int), @@ -730,14 +736,16 @@ static struct ctl_table kern_table[] = { .data = &watchdog_enabled, .maxlen = sizeof (int), .mode = 0644, - .proc_handler = proc_dowatchdog_enabled, + .proc_handler = proc_dowatchdog, + .extra1 = &zero, + .extra2 = &one, }, { .procname = "watchdog_thresh", - .data = &softlockup_thresh, + .data = &watchdog_thresh, .maxlen = sizeof(int), .mode = 0644, - .proc_handler = proc_dowatchdog_thresh, + .proc_handler = proc_dowatchdog, .extra1 = &neg_one, .extra2 = &sixty, }, @@ -755,7 +763,9 @@ static struct ctl_table kern_table[] = { .data = &watchdog_enabled, .maxlen = sizeof (int), .mode = 0644, - .proc_handler = proc_dowatchdog_enabled, + .proc_handler = proc_dowatchdog, + .extra1 = &zero, + .extra2 = &one, }, #endif #if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86) @@ -928,6 +938,12 @@ static struct ctl_table kern_table[] = { }, #endif #ifdef CONFIG_PERF_EVENTS + /* + * User-space scripts rely on the existence of this file + * as a feature check for perf_events being enabled. + * + * So it's an ABI, do not remove! + */ { .procname = "perf_event_paranoid", .data = &sysctl_perf_event_paranoid, @@ -1496,7 +1512,7 @@ static struct ctl_table fs_table[] = { static struct ctl_table debug_table[] = { #if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) || \ - defined(CONFIG_S390) + defined(CONFIG_S390) || defined(CONFIG_TILE) { .procname = "exception-trace", .data = &show_unhandled_signals, @@ -1574,16 +1590,11 @@ void sysctl_head_get(struct ctl_table_header *head) spin_unlock(&sysctl_lock); } -static void free_head(struct rcu_head *rcu) -{ - kfree(container_of(rcu, struct ctl_table_header, rcu)); -} - void sysctl_head_put(struct ctl_table_header *head) { spin_lock(&sysctl_lock); if (!--head->count) - call_rcu(&head->rcu, free_head); + kfree_rcu(head, rcu); spin_unlock(&sysctl_lock); } @@ -1955,10 +1966,10 @@ void unregister_sysctl_table(struct ctl_table_header * header) start_unregistering(header); if (!--header->parent->count) { WARN_ON(1); - call_rcu(&header->parent->rcu, free_head); + kfree_rcu(header->parent, rcu); } if (!--header->count) - call_rcu(&header->rcu, free_head); + kfree_rcu(header, rcu); spin_unlock(&sysctl_lock); } |