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| author | Ingo Molnar <mingo@elte.hu> | 2009-02-11 10:17:42 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-02-11 10:17:42 +0100 |
| commit | f437e8b53eab92a5829e65781e29aed23d8ffd0c (patch) | |
| tree | 48982c8818a4ac5cddb84ca6a1d55620eb9680ee /kernel/trace/ftrace.c | |
| parent | 140573d33b703194b7e1893711e78b7f546cca7c (diff) | |
| parent | 8e4921515c1a379539607eb443d51c30f4f7f338 (diff) | |
Merge commit 'v2.6.29-rc4' into sched/core
Diffstat (limited to 'kernel/trace/ftrace.c')
| -rw-r--r-- | kernel/trace/ftrace.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 7dcf6e9f2b0..9a236ffe2aa 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -1737,9 +1737,12 @@ static void clear_ftrace_pid(struct pid *pid) { struct task_struct *p; + rcu_read_lock(); do_each_pid_task(pid, PIDTYPE_PID, p) { clear_tsk_trace_trace(p); } while_each_pid_task(pid, PIDTYPE_PID, p); + rcu_read_unlock(); + put_pid(pid); } @@ -1747,9 +1750,11 @@ static void set_ftrace_pid(struct pid *pid) { struct task_struct *p; + rcu_read_lock(); do_each_pid_task(pid, PIDTYPE_PID, p) { set_tsk_trace_trace(p); } while_each_pid_task(pid, PIDTYPE_PID, p); + rcu_read_unlock(); } static void clear_ftrace_pid_task(struct pid **pid) |