linux-kernel - [PATCH 1/3] perf tool: precise mode requires exclude

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Date:	Mon, 10 Sep 2012 10:40:14 -0600
From:	David Ahern <dsahern@...il.com>
To:	acme@...stprotocols.net, linux-kernel@...r.kernel.org,
	peterz@...radead.org
Cc:	David Ahern <dsahern@...il.com>, Ingo Molnar <mingo@...nel.org>,
	Robert Richter <robert.richter@....com>,
	Gleb Natapov <gleb@...hat.com>, Avi Kivity <avi@...hat.com>
Subject: [PATCH 1/3] perf tool: precise mode requires exclude_guest

PEBS cannot be used with guest mode. See:
   https://lkml.org/lkml/2012/7/9/264

If user adds :p modifier set exclude_guest as well.

Signed-off-by: David Ahern <dsahern@...il.com>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Robert Richter <robert.richter@....com>
Cc: Gleb Natapov <gleb@...hat.com>
Cc: Avi Kivity <avi@...hat.com>
---
 tools/perf/util/parse-events.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index a031ee1..f2c02b2 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -694,6 +694,9 @@ static int get_event_modifier(struct event_modifier *mod, char *str,
 			eH = 0;
 		} else if (*str == 'p') {
 			precise++;
+			/* use of precise requires exclude_guest */
+			if (!exclude_GH)
+				eG = 1;
 		} else
 			break;
 
-- 
1.7.10.1

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