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Subject[PATCH tip 2/3] perf_counter tools: Add --comms parameter to 'perf report'
So that we can filter by comm. Symbols in other comms won't be accounted
for.

Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/Documentation/perf-report.txt | 4 +++
tools/perf/builtin-report.c | 31 +++++++++++++++++++++--------
2 files changed, 26 insertions(+), 9 deletions(-)

diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index 13d85ca..4c44ef1 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -24,6 +24,10 @@ OPTIONS
--dsos=::
Only consider symbols in these dsos. CSV that understands
file://filename entries.
+-C::
+--comms=::
+ Only consider symbols in these comms. CSV that understands
+ file://filename entries.

SEE ALSO
--------
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 7c6b6e7..60bdcd9 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -33,8 +33,8 @@ static char *vmlinux = NULL;

static char default_sort_order[] = "comm,dso";
static char *sort_order = default_sort_order;
-static char *dso_list_str;
-static struct strlist *dso_list;
+static char *dso_list_str, *comm_list_str;
+static struct strlist *dso_list, *comm_list;

static int input;
static int show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;
@@ -1253,6 +1253,9 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
return -1;
}

+ if (comm_list && !strlist__has_entry(comm_list, thread->comm))
+ return 0;
+
if (event->header.misc & PERF_EVENT_MISC_KERNEL) {
show = SHOW_KERNEL;
level = 'k';
@@ -1667,6 +1670,8 @@ static const struct option options[] = {
OPT_BOOLEAN('c', "callchain", &callchain, "Display callchains"),
OPT_STRING('d', "dsos", &dso_list_str, "dso[,dso...]",
"only consider symbols in these dsos"),
+ OPT_STRING('C', "comms", &comm_list_str, "comm[,comm...]",
+ "only consider symbols in these comms"),
OPT_END()
};

@@ -1685,6 +1690,19 @@ static void setup_sorting(void)
free(str);
}

+static void setup_list(struct strlist **list, const char *list_str,
+ const char *list_name)
+{
+ if (list_str) {
+ *list = strlist__new(true, list_str);
+ if (!*list) {
+ fprintf(stderr, "problems parsing %s list\n",
+ list_name);
+ exit(129);
+ }
+ }
+}
+
int cmd_report(int argc, const char **argv, const char *prefix)
{
symbol__init();
@@ -1706,13 +1724,8 @@ int cmd_report(int argc, const char **argv, const char *prefix)
if (argc)
usage_with_options(report_usage, options);

- if (dso_list_str) {
- dso_list = strlist__new(true, dso_list_str);
- if (!dso_list) {
- fprintf(stderr, "problems parsing dso list\n");
- exit(129);
- }
- }
+ setup_list(&dso_list, dso_list_str, "dso");
+ setup_list(&comm_list, comm_list_str, "comm");

setup_pager();

--
1.6.2.5


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