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authorSteven Rostedt (Red Hat) <rostedt@goodmis.org>2015-12-01 16:08:05 -0500
committerSteven Rostedt <rostedt@goodmis.org>2015-12-01 16:08:05 -0500
commit0f72e37e42a8ce427caa1b96f7f51e450f2ecb82 (patch)
tree59249ac6a7d2fbf517f2f8757ee5af6307cff3e7 /kernel
parentbd1b7cd360f529394936f28746eb4aaa12d6770a (diff)
tracing: Add sched_wakeup_new and sched_waking tracepoints for pid filter
The set_event_pid filter relies on attaching to the sched_switch and sched_wakeup tracepoints to see if it should filter the tracing on schedule tracepoints. By adding the callbacks to sched_wakeup, pids in the set_event_pid file will trace the wakeups of those tasks with those pids. But sched_wakeup_new and sched_waking were missed. These two should also be traced. Luckily, these tracepoints share the same class as sched_wakeup which means they can use the same pre and post callbacks as sched_wakeup does. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/trace/trace_events.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 6bbc5f652355..4f6ef6912e00 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -582,6 +582,12 @@ static void __ftrace_clear_event_pids(struct trace_array *tr)
unregister_trace_sched_wakeup(event_filter_pid_sched_wakeup_probe_pre, tr);
unregister_trace_sched_wakeup(event_filter_pid_sched_wakeup_probe_post, tr);
+ unregister_trace_sched_wakeup_new(event_filter_pid_sched_wakeup_probe_pre, tr);
+ unregister_trace_sched_wakeup_new(event_filter_pid_sched_wakeup_probe_post, tr);
+
+ unregister_trace_sched_waking(event_filter_pid_sched_wakeup_probe_pre, tr);
+ unregister_trace_sched_waking(event_filter_pid_sched_wakeup_probe_post, tr);
+
list_for_each_entry(file, &tr->events, list) {
clear_bit(EVENT_FILE_FL_PID_FILTER_BIT, &file->flags);
}
@@ -1729,6 +1735,16 @@ ftrace_event_pid_write(struct file *filp, const char __user *ubuf,
tr, INT_MAX);
register_trace_prio_sched_wakeup(event_filter_pid_sched_wakeup_probe_post,
tr, 0);
+
+ register_trace_prio_sched_wakeup_new(event_filter_pid_sched_wakeup_probe_pre,
+ tr, INT_MAX);
+ register_trace_prio_sched_wakeup_new(event_filter_pid_sched_wakeup_probe_post,
+ tr, 0);
+
+ register_trace_prio_sched_waking(event_filter_pid_sched_wakeup_probe_pre,
+ tr, INT_MAX);
+ register_trace_prio_sched_waking(event_filter_pid_sched_wakeup_probe_post,
+ tr, 0);
}
/*