diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-12-23 16:23:23 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-23 16:23:23 +0100 |
| commit | 1ccedb7cdba6886939dd8b4c8f965a826f696e56 (patch) | |
| tree | 0f5fc519a68faca5318c296315c9b6c502907056 /kernel/posix-cpu-timers.c | |
| parent | a98f8fd24fb24fcb9a359553e64dd6aac5cf4279 (diff) | |
| parent | 929096fe9ff1f4b3645cf3919527ab47e8d5e17c (diff) | |
| download | linux-1ccedb7cdba6886939dd8b4c8f965a826f696e56.tar.bz2 | |
Merge commit 'v2.6.28-rc9' into x86/apic
Diffstat (limited to 'kernel/posix-cpu-timers.c')
| -rw-r--r-- | kernel/posix-cpu-timers.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c index 153dcb2639c3..4e5288a831de 100644 --- a/kernel/posix-cpu-timers.c +++ b/kernel/posix-cpu-timers.c @@ -311,7 +311,7 @@ static int cpu_clock_sample_group(const clockid_t which_clock, struct task_cputime cputime; thread_group_cputime(p, &cputime); - switch (which_clock) { + switch (CPUCLOCK_WHICH(which_clock)) { default: return -EINVAL; case CPUCLOCK_PROF: @@ -1308,9 +1308,10 @@ static inline int task_cputime_expired(const struct task_cputime *sample, */ static inline int fastpath_timer_check(struct task_struct *tsk) { - struct signal_struct *sig = tsk->signal; + struct signal_struct *sig; - if (unlikely(!sig)) + /* tsk == current, ensure it is safe to use ->signal/sighand */ + if (unlikely(tsk->exit_state)) return 0; if (!task_cputime_zero(&tsk->cputime_expires)) { @@ -1323,6 +1324,8 @@ static inline int fastpath_timer_check(struct task_struct *tsk) if (task_cputime_expired(&task_sample, &tsk->cputime_expires)) return 1; } + + sig = tsk->signal; if (!task_cputime_zero(&sig->cputime_expires)) { struct task_cputime group_sample; |