[PATCH v1 04/10] perf parse-events: Add parse_uid_filter helper

[Ian Rogers <irogers@google.com>]

Add parse_uid_filter filter as a helper to parse_filter, that
constructs a uid filter string.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/parse-events.c | 11 +++++++++++
 tools/perf/util/parse-events.h |  1 +
 2 files changed, 12 insertions(+)

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index f147e13a7017..dd298dd6655a 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -2451,6 +2451,17 @@ int parse_filter(const struct option *opt, const char *str,
 					  (const void *)str);
 }
 
+int parse_uid_filter(struct evlist *evlist, uid_t uid)
+{
+	struct option opt = {
+		.value = &evlist,
+	};
+	char buf[128];
+
+	snprintf(buf, sizeof(buf), "uid == %d", uid);
+	return parse_filter(&opt, buf, /*unset=*/0);
+}
+
 static int add_exclude_perf_filter(struct evsel *evsel,
 				   const void *arg __maybe_unused)
 {
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index e176a34ab088..289afd42d642 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -45,6 +45,7 @@ static inline int parse_events(struct evlist *evlist, const char *str,
 int parse_event(struct evlist *evlist, const char *str);
 
 int parse_filter(const struct option *opt, const char *str, int unset);
+int parse_uid_filter(struct evlist *evlist, uid_t uid);
 int exclude_perf(const struct option *opt, const char *arg, int unset);
 
 enum parse_events__term_val_type {
-- 
2.47.1.613.gc27f4b7a9f-goog