linux-kernel - [PATCH 04/11] perf auxtrace: Add optional error flags to the itrace 'e' option

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Message-Id: <20200709173628.5613-5-adrian.hunter@intel.com>
Date:   Thu,  9 Jul 2020 20:36:21 +0300
From:   Adrian Hunter <adrian.hunter@...el.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Jiri Olsa <jolsa@...hat.com>, Andi Kleen <ak@...ux.intel.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 04/11] perf auxtrace: Add optional error flags to the itrace 'e' option

Allow the 'e' option to be followed by an architecture-specific number
which flags what kind of errors will or will not be reported.

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
---
 tools/perf/Documentation/itrace.txt | 3 +++
 tools/perf/util/auxtrace.c          | 2 ++
 tools/perf/util/auxtrace.h          | 2 ++
 3 files changed, 7 insertions(+)

diff --git a/tools/perf/Documentation/itrace.txt b/tools/perf/Documentation/itrace.txt
index e817179c5027..34864b4047ed 100644
--- a/tools/perf/Documentation/itrace.txt
+++ b/tools/perf/Documentation/itrace.txt
@@ -47,3 +47,6 @@
 	--itrace=i0nss1000000
 
 	skips the first million instructions.
+
+	The 'e' option may be followed by an architecture-specific number which
+	flags what kind of errors will or will not be reported.
diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c
index 25c639ac4ad4..5cfc0b12b2b3 100644
--- a/tools/perf/util/auxtrace.c
+++ b/tools/perf/util/auxtrace.c
@@ -1436,6 +1436,8 @@ int itrace_parse_synth_opts(const struct option *opt, const char *str,
 			break;
 		case 'e':
 			synth_opts->errors = true;
+			synth_opts->error_flags = strtoul(p, &endptr, 0);
+			p = endptr;
 			break;
 		case 'd':
 			synth_opts->log = true;
diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h
index 142ccf7d34df..a04475f41f28 100644
--- a/tools/perf/util/auxtrace.h
+++ b/tools/perf/util/auxtrace.h
@@ -91,6 +91,7 @@ enum itrace_period_type {
  * @cpu_bitmap: CPUs for which to synthesize events, or NULL for all
  * @ptime_range: time intervals to trace or NULL
  * @range_num: number of time intervals to trace
+ * @error_flags: arch-specific flags to affect what errors are reported
  */
 struct itrace_synth_opts {
 	bool			set;
@@ -124,6 +125,7 @@ struct itrace_synth_opts {
 	unsigned long		*cpu_bitmap;
 	struct perf_time_interval *ptime_range;
 	int			range_num;
+	unsigned int		error_flags;
 };
 
 /**
-- 
2.25.1