diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2016-03-18 15:28:04 (GMT) |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2016-03-22 22:04:10 (GMT) |
| commit | 7e6867bf831c71fe0e47438831ae3a94d4c7ab3c (patch) | |
| tree | aff6902663d850f314a23900a8caebf9a78e2a86 /kernel/trace/trace.h | |
| parent | 3debb0a9ddb16526de8b456491b7db60114f7b5e (diff) | |
| download | linux-7e6867bf831c71fe0e47438831ae3a94d4c7ab3c.tar.xz | |
tracing: Record and show NMI state
The latency tracer format has a nice column to indicate IRQ state, but
this is not able to tell us about NMI state.
When tracing perf interrupt handlers (which often run in NMI context)
it is very useful to see how the events nest.
Link: http://lkml.kernel.org/r/20160318153022.105068893@infradead.org
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace.h')
| -rw-r--r-- | kernel/trace/trace.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 39588c2..3fff4ad 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -125,6 +125,7 @@ enum trace_flag_type { TRACE_FLAG_HARDIRQ = 0x08, TRACE_FLAG_SOFTIRQ = 0x10, TRACE_FLAG_PREEMPT_RESCHED = 0x20, + TRACE_FLAG_NMI = 0x40, }; #define TRACE_BUF_SIZE 1024 |