linux-kernel - [PATCH 09/11] perf, tools: Add a new pmu interface to iterate over all events

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Message-Id: <1405123165-22666-10-git-send-email-andi@firstfloor.org>
Date:	Fri, 11 Jul 2014 16:59:23 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	jolsa@...hat.com
Cc:	linux-kernel@...r.kernel.org, namhyung@...nel.org,
	acme@...radead.org, Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH 09/11] perf, tools: Add a new pmu interface to iterate over all events

From: Andi Kleen <ak@...ux.intel.com>

With calling a callback. To be used in test code added in the next
patch.

Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
 tools/perf/util/pmu.c | 18 ++++++++++++++++++
 tools/perf/util/pmu.h |  2 ++
 2 files changed, 20 insertions(+)

diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 8714f9a..397e400 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -869,3 +869,21 @@ bool pmu_have_event(const char *pname, const char *name)
 	}
 	return false;
 }
+
+int pmu_iterate_events(int (*func)(const char *pmu, const char *name))
+{
+	int ret = 0;
+	struct perf_pmu *pmu;
+	struct perf_pmu_alias *alias;
+
+	perf_pmu__find("cpu"); /* Load PMUs */
+	pmu = NULL;
+	while ((pmu = perf_pmu__scan(pmu)) != NULL) {
+		list_for_each_entry(alias, &pmu->aliases, list) {
+			ret = func(pmu->name, alias->name);
+			if (ret != 0)
+				break;
+		}
+	}
+	return ret;
+}
diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h
index 583d21e..87a1da4 100644
--- a/tools/perf/util/pmu.h
+++ b/tools/perf/util/pmu.h
@@ -47,5 +47,7 @@ bool pmu_have_event(const char *pname, const char *name);
 
 int perf_pmu__test(void);
 
+int pmu_iterate_events(int (*func)(const char *, const char *name));
+
 extern const char *json_file;
 #endif /* __PMU_H */
-- 
1.9.3

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