linux-kernel - [PATCH 3/6] perf stat: Change metrics context calculation

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Message-Id: <1428441919-23099-4-git-send-email-jolsa@kernel.org>
Date:	Tue,  7 Apr 2015 23:25:16 +0200
From:	Jiri Olsa <jolsa@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	David Ahern <dsahern@...il.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Ingo Molnar <mingo@...nel.org>,
	Andi Kleen <andi@...stfloor.org>,
	William Cohen <wcohen@...hat.com>
Subject: [PATCH 3/6] perf stat: Change metrics context calculation

Changing metrics context calculation to allow more than
2 types of context.

Following patches will add support for the rest of the
exclude_* bits so we need separate array element for
all context combinations.

Link: http://lkml.kernel.org/n/tip-6mj0tn8z60ozof19xd80y6pe@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/builtin-stat.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 0b163ca4034f..0c748dda0692 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -247,9 +247,13 @@ out_free:
 	return -1;
 }
 
-#define NUM_CTX 3
+enum {
+	CTX_BIT_USER	= 1 << 0,
+	CTX_BIT_KERNEL	= 1 << 1,
+	CTX_BIT_MAX	= 1 << 2,
+};
 
-enum { CTX_USER, CTX_KERNEL, CTX_ALL };
+#define NUM_CTX CTX_BIT_MAX
 
 static struct stats runtime_nsecs_stats[MAX_NR_CPUS];
 static struct stats runtime_cycles_stats[NUM_CTX][MAX_NR_CPUS];
@@ -269,12 +273,13 @@ static struct stats runtime_elision_stats[NUM_CTX][MAX_NR_CPUS];
 
 static int evsel_context(struct perf_evsel *evsel)
 {
+	int ctx = 0;
+
 	if (evsel->attr.exclude_kernel)
-		return CTX_USER;
+		ctx |= CTX_BIT_KERNEL;
 	if (evsel->attr.exclude_user)
-		return CTX_KERNEL;
-	/* Handle hypervisor too? */
-	return CTX_ALL;
+		ctx |= CTX_BIT_USER;
+	return ctx;
 }
 
 static void perf_stat__reset_stats(struct perf_evlist *evlist)
-- 
1.9.3

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