tracing: Simplify creation and deletion of synthetic events

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Since the event_mutex and synth_event_mutex ordering issue
is gone, we can skip existing event check when adding or
deleting events, and some redundant code in error path.

This changes release_all_synth_events() to abort the process
when it hits any error and returns the error code. It succeeds
only if it has no error.

Link: http://lkml.kernel.org/r/154140847194.17322.17960275728005067803.stgit@devbox

Reviewed-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Tested-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

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Masami Hiramatsu 2018-11-05 18:01:12 +09:00 • committed by Steven Rostedt (VMware)

parent fc800a10be

commit faacb361f2

1 changed files with 18 additions and 35 deletions

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53

kernel/trace/trace_events_hist.c

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