diff options
Diffstat (limited to 'kernel/timer.c')
| -rw-r--r-- | kernel/timer.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/kernel/timer.c b/kernel/timer.c index a297ffcf888e..6ec7e7e0db43 100644 --- a/kernel/timer.c +++ b/kernel/timer.c @@ -861,7 +861,13 @@ EXPORT_SYMBOL(mod_timer); * * mod_timer_pinned() is a way to update the expire field of an * active timer (if the timer is inactive it will be activated) - * and not allow the timer to be migrated to a different CPU. + * and to ensure that the timer is scheduled on the current CPU. + * + * Note that this does not prevent the timer from being migrated + * when the current CPU goes offline. If this is a problem for + * you, use CPU-hotplug notifiers to handle it correctly, for + * example, cancelling the timer when the corresponding CPU goes + * offline. * * mod_timer_pinned(timer, expires) is equivalent to: * @@ -1102,7 +1108,9 @@ static void call_timer_fn(struct timer_list *timer, void (*fn)(unsigned long), * warnings as well as problems when looking into * timer->lockdep_map, make a copy and use that here. */ - struct lockdep_map lockdep_map = timer->lockdep_map; + struct lockdep_map lockdep_map; + + lockdep_copy_map(&lockdep_map, &timer->lockdep_map); #endif /* * Couple the lock chain with the lock chain at @@ -1427,25 +1435,25 @@ SYSCALL_DEFINE0(getppid) SYSCALL_DEFINE0(getuid) { /* Only we change this so SMP safe */ - return current_uid(); + return from_kuid_munged(current_user_ns(), current_uid()); } SYSCALL_DEFINE0(geteuid) { /* Only we change this so SMP safe */ - return current_euid(); + return from_kuid_munged(current_user_ns(), current_euid()); } SYSCALL_DEFINE0(getgid) { /* Only we change this so SMP safe */ - return current_gid(); + return from_kgid_munged(current_user_ns(), current_gid()); } SYSCALL_DEFINE0(getegid) { /* Only we change this so SMP safe */ - return current_egid(); + return from_kgid_munged(current_user_ns(), current_egid()); } #endif |