perf auxtrace: Add itrace option to output ptwrite events

Add itrace option to output ptwrite events.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1495786658-18063-24-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

3 files changed, 10 insertions, 3 deletions

diff --git a/tools/perf/Documentation/itrace.txt b/tools/perf/Documentation/itrace.txt
index e2a4c5e0dbe5..deafd16692b6 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 0daf63b9ee3e..baad91ed1e05 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 9f0de72d58e2..b48afb2f18f3 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;