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| author | Jeff Garzik <jeff@garzik.org> | 2007-02-17 15:11:43 -0500 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-02-17 15:11:43 -0500 |
| commit | f630fe2817601314b2eb7ca5ddc23c7834646731 (patch) | |
| tree | 3bfb4939b7bbc3859575ca8b58fa3f929b015941 /kernel/posix-cpu-timers.c | |
| parent | 48c871c1f6a7c7044dd76774fb469e65c7e2e4e8 (diff) | |
| parent | 8a03d9a498eaf02c8a118752050a5154852c13bf (diff) | |
Merge branch 'master' into upstream
Diffstat (limited to 'kernel/posix-cpu-timers.c')
| -rw-r--r-- | kernel/posix-cpu-timers.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c index 7c3e1e6dfb5b..657f77697415 100644 --- a/kernel/posix-cpu-timers.c +++ b/kernel/posix-cpu-timers.c @@ -304,7 +304,7 @@ int posix_cpu_clock_get(const clockid_t which_clock, struct timespec *tp) * should be able to see it. */ struct task_struct *p; - read_lock(&tasklist_lock); + rcu_read_lock(); p = find_task_by_pid(pid); if (p) { if (CPUCLOCK_PERTHREAD(which_clock)) { @@ -312,12 +312,17 @@ int posix_cpu_clock_get(const clockid_t which_clock, struct timespec *tp) error = cpu_clock_sample(which_clock, p, &rtn); } - } else if (p->tgid == pid && p->signal) { - error = cpu_clock_sample_group(which_clock, - p, &rtn); + } else { + read_lock(&tasklist_lock); + if (p->tgid == pid && p->signal) { + error = + cpu_clock_sample_group(which_clock, + p, &rtn); + } + read_unlock(&tasklist_lock); } } - read_unlock(&tasklist_lock); + rcu_read_unlock(); } if (error) |