[tip:perf/core] perf auxtrace: Add itrace option to output ptwrite events

[tip-bot for Adrian Hunter]

Commit-ID:  3bdafdffa9baf2b34aebad1c98bc17b50202cb78
Gitweb:     http://git.kernel.org/tip/3bdafdffa9baf2b34aebad1c98bc17b50202cb78
Author:     Adrian Hunter <adrian.hunter@xxxxxxxxx>
AuthorDate: Fri, 26 May 2017 11:17:24 +0300
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Tue, 27 Jun 2017 12:09:20 -0300

perf auxtrace: Add itrace option to output ptwrite events

Add itrace option to output ptwrite events.

Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1495786658-18063-24-git-send-email-adrian.hunter@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/Documentation/itrace.txt | 7 ++++---
 tools/perf/util/auxtrace.c          | 4 ++++
 tools/perf/util/auxtrace.h          | 2 ++
 3 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/tools/perf/Documentation/itrace.txt b/tools/perf/Documentation/itrace.txt
index e2a4c5e..deafd16 100644
--- a/tools/perf/Documentation/itrace.txt
+++ b/tools/perf/Documentation/itrace.txt
@@ -3,13 +3,14 @@
 		c	synthesize branches events (calls only)
 		r	synthesize branches events (returns only)
 		x	synthesize transactions events
+		w	synthesize ptwrite events
 		e	synthesize error events
 		d	create a debug log
 		g	synthesize a call chain (use with i or x)
 		l	synthesize last branch entries (use with i or x)
 		s       skip initial number of events
 
-	The default is all events i.e. the same as --itrace=ibxe
+	The default is all events i.e. the same as --itrace=ibxwe
 
 	In addition, the period (default 100000) for instructions events
 	can be specified in units of:
@@ -26,8 +27,8 @@
 	Also the number of last branch entries (default 64, max. 1024) for
 	instructions or transactions events can be specified.
 
-	It is also possible to skip events generated (instructions, branches, transactions)
-	at the beginning. This is useful to ignore initialization code.
+	It is also possible to skip events generated (instructions, branches, transactions,
+	ptwrite) at the beginning. This is useful to ignore initialization code.
 
 	--itrace=i0nss1000000
 
diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c
index 0daf63b..baad91e 100644
--- a/tools/perf/util/auxtrace.c
+++ b/tools/perf/util/auxtrace.c
@@ -947,6 +947,7 @@ void itrace_synth_opts__set_default(struct itrace_synth_opts *synth_opts)
 	synth_opts->instructions = true;
 	synth_opts->branches = true;
 	synth_opts->transactions = true;
+	synth_opts->ptwrites = true;
 	synth_opts->errors = true;
 	synth_opts->period_type = PERF_ITRACE_DEFAULT_PERIOD_TYPE;
 	synth_opts->period = PERF_ITRACE_DEFAULT_PERIOD;
@@ -1030,6 +1031,9 @@ int itrace_parse_synth_opts(const struct option *opt, const char *str,
 		case 'x':
 			synth_opts->transactions = true;
 			break;
+		case 'w':
+			synth_opts->ptwrites = true;
+			break;
 		case 'e':
 			synth_opts->errors = true;
 			break;
diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h
index 9f0de72..b48afb2 100644
--- a/tools/perf/util/auxtrace.h
+++ b/tools/perf/util/auxtrace.h
@@ -59,6 +59,7 @@ enum itrace_period_type {
  * @instructions: whether to synthesize 'instructions' events
  * @branches: whether to synthesize 'branches' events
  * @transactions: whether to synthesize events for transactions
+ * @ptwrites: whether to synthesize events for ptwrites
  * @errors: whether to synthesize decoder error events
  * @dont_decode: whether to skip decoding entirely
  * @log: write a decoding log
@@ -79,6 +80,7 @@ struct itrace_synth_opts {
 	bool			instructions;
 	bool			branches;
 	bool			transactions;
+	bool			ptwrites;
 	bool			errors;
 	bool			dont_decode;
 	bool			log;