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From: tip-bot for Jiri Olsa <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: mingo@kernel.org, peterz@infradead.org, jolsa@kernel.org,
	tglx@linutronix.de, linux-kernel@vger.kernel.org,
	namhyung@kernel.org, dsahern@gmail.com,
	alexander.shishkin@linux.intel.com, hpa@zytor.com,
	acme@redhat.com, oleg@redhat.com, chabbi.milind@gmail.com,
	frederic@kernel.org
Subject: [tip:perf/core] perf/hw_breakpoint: Remove superfluous bp->attr.disabled = 0
Date: Thu, 6 Sep 2018 06:02:34 -0700
Message-ID: <tip-cb45302d7c5e20f0c0598cdbd7753fa44daceb2a@git.kernel.org> (raw)
In-Reply-To: <20180827091228.2878-4-jolsa@kernel.org>

Commit-ID:  cb45302d7c5e20f0c0598cdbd7753fa44daceb2a
Gitweb:     https://git.kernel.org/tip/cb45302d7c5e20f0c0598cdbd7753fa44daceb2a
Author:     Jiri Olsa <jolsa@kernel.org>
AuthorDate: Mon, 27 Aug 2018 11:12:26 +0200
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Thu, 30 Aug 2018 14:49:23 -0300

perf/hw_breakpoint: Remove superfluous bp->attr.disabled = 0

Once the breakpoint was succesfully modified, the attr->disabled value
is in bp->attr.disabled. So there's no reason to set it again, removing
that.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Frederic Weisbecker <frederic@kernel.org>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Milind Chabbi <chabbi.milind@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180827091228.2878-4-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 kernel/events/hw_breakpoint.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/kernel/events/hw_breakpoint.c b/kernel/events/hw_breakpoint.c
index fb229d9c7f3c..3e560d7609fd 100644
--- a/kernel/events/hw_breakpoint.c
+++ b/kernel/events/hw_breakpoint.c
@@ -526,10 +526,9 @@ int modify_user_hw_breakpoint(struct perf_event *bp, struct perf_event_attr *att
 	if (err)
 		return err;
 
-	if (!attr->disabled) {
+	if (!attr->disabled)
 		perf_event_enable(bp);
-		bp->attr.disabled = 0;
-	}
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(modify_user_hw_breakpoint);

  reply index

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-27  9:12 [PATCHv4 0/5] perf/hw_breakpoint: Fix breakpoint modify Jiri Olsa
2018-08-27  9:12 ` [PATCH 1/5] perf tests: Add breakpoint modify tests Jiri Olsa
2018-09-06 13:01   ` [tip:perf/core] " tip-bot for Jiri Olsa
2018-08-27  9:12 ` [PATCH 2/5] perf/hw_breakpoint: Modify breakpoint even if the new attr has disabled set Jiri Olsa
2018-09-06 13:02   ` [tip:perf/core] " tip-bot for Jiri Olsa
2018-08-27  9:12 ` [PATCH 3/5] perf/hw_breakpoint: Remove superfluous bp->attr.disabled = 0 Jiri Olsa
2018-09-06 13:02   ` tip-bot for Jiri Olsa [this message]
2018-08-27  9:12 ` [PATCH 4/5] perf/hw_breakpoint: Enable breakpoint in modify_user_hw_breakpoint Jiri Olsa
2018-09-06 13:03   ` [tip:perf/core] " tip-bot for Jiri Olsa
2018-08-27  9:12 ` [PATCH 5/5] perf/hw_breakpoint: Simplify breakpoint enable in perf_event_modify_breakpoint Jiri Olsa
2018-09-06 13:03   ` [tip:perf/core] " tip-bot for Jiri Olsa
2018-08-30 18:39 ` [PATCHv4 0/5] perf/hw_breakpoint: Fix breakpoint modify Arnaldo Carvalho de Melo

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