linux-kernel - [tip:perf/core] perf stat: Change metrics context calculation

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Message-ID: <tip-9f71b4f39d7c01cae9d80e938774ff6b0a9bfd80@git.kernel.org>
Date:	Tue, 5 May 2015 20:08:03 -0700
From:	tip-bot for Jiri Olsa <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	dsahern@...il.com, acme@...hat.com, namhyung@...nel.org,
	linux-kernel@...r.kernel.org, a.p.zijlstra@...llo.nl,
	hpa@...or.com, wcohen@...hat.com, tglx@...utronix.de,
	paulus@...ba.org, jolsa@...nel.org, mingo@...nel.org,
	andi@...stfloor.org
Subject: [tip:perf/core] perf stat: Change metrics context calculation

Commit-ID:  9f71b4f39d7c01cae9d80e938774ff6b0a9bfd80
Gitweb:     http://git.kernel.org/tip/9f71b4f39d7c01cae9d80e938774ff6b0a9bfd80
Author:     Jiri Olsa <jolsa@...nel.org>
AuthorDate: Tue, 7 Apr 2015 23:25:16 +0200
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Wed, 29 Apr 2015 10:38:05 -0300

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.

Signed-off-by: Jiri Olsa <jolsa@...nel.org>
Acked-by: Namhyung Kim <namhyung@...nel.org>
Cc: Andi Kleen <andi@...stfloor.org>
Cc: David Ahern <dsahern@...il.com>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: William Cohen <wcohen@...hat.com>
Link: http://lkml.kernel.org/r/1428441919-23099-4-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 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 52f4330..cca100d 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)
--
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