diff options
| 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 | Merge branches 'sched/rt' and 'sched/urgent' into sched/core (diff) | |
| parent | Linux 2.6.29-rc4 (diff) | |
| download | linux-f437e8b53eab92a5829e65781e29aed23d8ffd0c.tar.xz linux-f437e8b53eab92a5829e65781e29aed23d8ffd0c.zip | |
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 7dcf6e9f2b04..9a236ffe2aa4 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) |