From 4b2b2c6a7d244464b6142cdbfef441de1499e7ff Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Wed, 27 Oct 2021 11:03:33 +0300 Subject: [PATCH] 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: Andi Kleen Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: https://lore.kernel.org/r/20211027080334.365596-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/itrace.txt | 1 + tools/perf/util/auxtrace.h | 2 ++ 2 files changed, 3 insertions(+) diff --git a/tools/perf/Documentation/itrace.txt b/tools/perf/Documentation/itrace.txt index 141449e97bed..c52755481e2f 100644 --- a/tools/perf/Documentation/itrace.txt +++ b/tools/perf/Documentation/itrace.txt @@ -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. diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h index 889f976ea1a0..bbf0d78c6401 100644 --- a/tools/perf/util/auxtrace.h +++ b/tools/perf/util/auxtrace.h @@ -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" \