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author | Steven Rostedt <srostedt@redhat.com> | 2012-05-10 15:55:43 -0400 |
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committer | Steven Rostedt <rostedt@goodmis.org> | 2012-05-10 15:55:43 -0400 |
commit | 9b63776fa3ca96c4ecda76f6fa947b7b0add66ac (patch) | |
tree | ac90f2faceecab78d7d547c33daef31d4a9e2943 /arch/xtensa/include/asm/hardirq.h | |
parent | 20d23aaa31da295378abff4272716e3dfc72baf0 (diff) |
tracing: Do not enable function event with enable
With the adding of function tracing event to perf, it caused a
side effect that produces the following warning when enabling all
events in ftrace:
# echo 1 > /sys/kernel/debug/tracing/events/enable
[console]
event trace: Could not enable event function
This is because when enabling all events via the debugfs system
it ignores events that do not have a ->reg() function assigned.
This was to skip over the ftrace internal events (as they are
not TRACE_EVENTs). But as the ftrace function event now has
a ->reg() function attached to it for use with perf, it is no
longer ignored.
Worse yet, this ->reg() function is being called when it should
not be. It returns an error and causes the above warning to
be printed.
By adding a new event_call flag (TRACE_EVENT_FL_IGNORE_ENABLE)
and have all ftrace internel event structures have it set,
setting the events/enable will no longe try to incorrectly enable
the function event and does not warn.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'arch/xtensa/include/asm/hardirq.h')
0 files changed, 0 insertions, 0 deletions