Commit 4b2b2c6a authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo
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perf auxtrace: Add itrace d+o option to direct debug log to stdout 



It can be useful to see debug output in between normal output.

Add 'o' to the flags of debug option 'd', so that '--itrace=d+o' can
specify output of the debug log to stdout.

Reviewed-by: default avatarAndi Kleen <ak@linux.intel.com>
Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: https://lore.kernel.org/r/20211027080334.365596-6-adrian.hunter@intel.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent c3afd6e5

tools/perf/Documentation/itrace.txt

+1 −0
Original line number Diff line number Diff line
@@ -62,5 +62,6 @@ 
	debug messages will or will not be logged. Each flag must be preceded

	by either '+' or '-'. The flags are:

		a	all perf events

		o	output to stdout



	If supported, the 'q' option may be repeated to increase the effect.

tools/perf/util/auxtrace.h

+2 −0
Original line number Diff line number Diff line
@@ -59,6 +59,7 @@ enum itrace_period_type { 
#define AUXTRACE_ERR_FLG_DATA_LOST	(1 << ('l' - 'a'))



#define AUXTRACE_LOG_FLG_ALL_PERF_EVTS	(1 << ('a' - 'a'))

#define AUXTRACE_LOG_FLG_USE_STDOUT	(1 << ('o' - 'a'))



/**

 * struct itrace_synth_opts - AUX area tracing synthesis options.
@@ -641,6 +642,7 @@ bool auxtrace__evsel_is_auxtrace(struct perf_session *session, 
"				d[flags]:		create a debug log\n" \

"							each flag must be preceded by + or -\n" \

"							log flags are: a (all perf events)\n" \

"							               o (output to stdout)\n" \

"				f:	    		synthesize first level cache events\n" \

"				m:	    		synthesize last level cache events\n" \

"				t:	    		synthesize TLB events\n" \