From: Borislav Petkov <bp@alien8.de>
To: Vince Weaver <vince@deater.net>
Cc: Robert Richter <rric@kernel.org>, Ingo Molnar <mingo@kernel.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
lkml <linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH] perf/stat: Add --disable-hwdt
Date: Mon, 6 Feb 2017 18:02:06 +0100 [thread overview]
Message-ID: <20170206170206.phbb3rxl6reyokec@pd.tnic> (raw)
In-Reply-To: <alpine.DEB.2.11.1702060921480.11734@pianoman.cluster.toy>
On Mon, Feb 06, 2017 at 09:23:33AM -0500, Vince Weaver wrote:
> minor issue, but is it possibly to do anything about dmesg spam? From
> what I recall every time you enable and disable the watchdog the kernel
> prints a message. Makes for messy logs, especially when you run the
> perf_fuzzer as root.
You mean this:
[81304.460656] NMI watchdog: enabled on all CPUs, permanently consumes one hw-PMU counter.
We could turn it onto a
pr_info_once().
I mean, the feedback that the thing has been enabled is the 1 in
/proc/sys/kernel/nmi_watchdog anyway...
--
Regards/Gruss,
Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
next prev parent reply other threads:[~2017-02-06 17:02 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-06 12:15 Borislav Petkov
2017-02-06 12:22 ` Ingo Molnar
2017-02-06 12:41 ` Borislav Petkov
2017-02-06 12:44 ` Ingo Molnar
2017-02-06 12:49 ` Borislav Petkov
2017-02-06 13:18 ` Robert Richter
2017-02-06 13:23 ` Borislav Petkov
2017-02-07 7:25 ` Ingo Molnar
2017-02-07 10:54 ` Borislav Petkov
2017-02-07 15:06 ` Borislav Petkov
2017-02-11 17:03 ` Borislav Petkov
2017-02-11 17:59 ` Ingo Molnar
2017-02-11 18:32 ` Borislav Petkov
2017-02-11 20:41 ` Ingo Molnar
2017-03-07 7:21 ` [tip:perf/core] perf stat: Issue a HW watchdog disable hint tip-bot for Borislav Petkov
2017-02-06 14:23 ` [RFC PATCH] perf/stat: Add --disable-hwdt Vince Weaver
2017-02-06 17:02 ` Borislav Petkov [this message]
2017-02-07 1:08 ` Borislav Petkov
2017-02-07 1:09 ` [PATCH 1/2] tools/lib/api/fs: Add procfs int read/write helpers Borislav Petkov
2017-02-07 1:43 ` Arnaldo Carvalho de Melo
2017-02-07 10:30 ` Borislav Petkov
2017-02-07 15:00 ` Arnaldo Carvalho de Melo
2017-02-07 15:08 ` Borislav Petkov
2017-02-07 15:34 ` Arnaldo Carvalho de Melo
2017-02-07 1:10 ` [PATCH 2/2] perf stat: Disable HW watchdog around a perf stat session Borislav Petkov
2017-02-07 1:45 ` Arnaldo Carvalho de Melo
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