From: Oleg Nesterov <oleg@redhat.com>
To: Jiri Olsa <jolsa@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>,
lkml <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@kernel.org>,
Namhyung Kim <namhyung@kernel.org>,
David Ahern <dsahern@gmail.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Milind Chabbi <chabbi.milind@gmail.com>,
Frederic Weisbecker <frederic@kernel.org>
Subject: Re: [PATCH 5/5] perf/hw_breakpoint: Simplify breakpoint enable in perf_event_modify_breakpoint
Date: Tue, 14 Aug 2018 12:32:32 +0200 [thread overview]
Message-ID: <20180814103231.GC7268@redhat.com> (raw)
In-Reply-To: <20180810104730.3293-6-jolsa@kernel.org>
On 08/10, Jiri Olsa wrote:
>
> --- a/kernel/events/core.c
> +++ b/kernel/events/core.c
> @@ -2867,16 +2867,11 @@ static int perf_event_modify_breakpoint(struct perf_event *bp,
> _perf_event_disable(bp);
>
> err = modify_user_hw_breakpoint_check(bp, attr, true);
> - if (err) {
> - if (!bp->attr.disabled)
> - _perf_event_enable(bp);
>
> - return err;
> - }
> -
> - if (!attr->disabled)
> + if (!bp->attr.disabled)
> _perf_event_enable(bp);
> - return 0;
> +
> + return err;
> }
Acked-by: Oleg Nesterov <oleg@redhat.com>
next prev parent reply other threads:[~2018-08-14 10:32 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-10 10:47 [PATCHv3 0/5] perf/hw_breakpoint: Fix breakpoint modify Jiri Olsa
2018-08-10 10:47 ` [PATCH 1/5] perf tests: Add breakpoint modify tests Jiri Olsa
2018-08-10 10:47 ` [PATCH 2/5] perf/hw_breakpoint: Modify breakpoint even if the new attr has disabled set Jiri Olsa
2018-08-17 14:27 ` Frederic Weisbecker
2018-08-10 10:47 ` [PATCH 3/5] perf/hw_breakpoint: Remove superfluous bp->attr.disabled = 0 Jiri Olsa
2018-08-17 14:47 ` Frederic Weisbecker
2018-08-10 10:47 ` [PATCH 4/5] perf/hw_breakpoint: Enable breakpoint in modify_user_hw_breakpoint Jiri Olsa
2018-08-14 10:32 ` Oleg Nesterov
2018-08-17 14:50 ` Frederic Weisbecker
2018-08-10 10:47 ` [PATCH 5/5] perf/hw_breakpoint: Simplify breakpoint enable in perf_event_modify_breakpoint Jiri Olsa
2018-08-14 10:32 ` Oleg Nesterov [this message]
2018-08-17 11:48 ` [PATCHv3 0/5] perf/hw_breakpoint: Fix breakpoint modify Jiri Olsa
2018-08-27 9:12 [PATCHv4 " Jiri Olsa
2018-08-27 9:12 ` [PATCH 5/5] perf/hw_breakpoint: Simplify breakpoint enable in perf_event_modify_breakpoint Jiri Olsa
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