linux-kernel - [PATCH] perf/core: Enable the bp only if the .disable field is 0.

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Date:   Mon, 27 Nov 2017 01:43:50 -0500
From:   Milind Chabbi <chabbi.milind@...il.com>
To:     jolsa@...hat.com
Cc:     chabbi.milind@...il.com, Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Paul Mackerras <paulus@...ba.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] perf/core: Enable the bp only if the .disable field is 0.

Signed-off-by: Milind Chabbi <chabbi.milind@...il.com>
---
 kernel/events/core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 35747a58ffb4..1b8eae85e9de 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -2659,7 +2659,8 @@ static int perf_event_modify_breakpoint(struct perf_event *bp,
 		return err;
 	}
 
-	_perf_event_enable(bp);
+	if (!attr->disabled)
+		_perf_event_enable(bp);
 	return 0;
 }
 
-- 
2.14.1