From: will.deacon@arm.com (Will Deacon)
To: linux-arm-kernel@lists.infradead.org
Subject: [Bug] ARM 'perf' regression by commit a43cb95d5
Date: Fri, 17 May 2013 16:59:36 +0100 [thread overview]
Message-ID: <20130517155936.GQ23112@mudshark.cambridge.arm.com> (raw)
In-Reply-To: <CACVXFVPJyKrOBk+JjsfCi+aQ8snQ7PsEJVuOnuTkrWBYEnvDtA@mail.gmail.com>
On Fri, May 17, 2013 at 11:07:37AM +0100, Ming Lei wrote:
> On Fri, May 17, 2013 at 5:54 PM, Will Deacon <will.deacon@arm.com> wrote:
> > On Fri, May 17, 2013 at 10:48:23AM +0100, Ming Lei wrote:
> >> On Fri, May 17, 2013 at 5:36 PM, Will Deacon <will.deacon@arm.com> wrote:
> >> >
> >> > It's probably easier if you choose a workload, otherwise it's difficult to
> >> > see what is `correct' and what is broken. For example, your broken output
> >> > seems to be in the smsc95xx driver, so assumedly there's a bunch of
> >> > networking going on whereas your other output is in cpuidle_enter_state.
> >>
> >> If all modules are removed, the result will become OK. And if I only insert one
> >> module, the top sample will fall inside the only module, but I am sure
> >> nothing is working on the symbols of the module.
Ok, I tried to reproduce this on my TC2 with 3.10-rc1 and perf top looks
fine. I also tried loading your spi-altera module and it made no difference.
I'm using a fairly old perf tool (reports its version as 3.5.5).
Will
next prev parent reply other threads:[~2013-05-17 15:59 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-17 2:16 [Bug] ARM 'perf' regression by commit a43cb95d5 Ming Lei
2013-05-17 2:28 ` Ming Lei
2013-05-17 8:55 ` Will Deacon
2013-05-17 9:27 ` Ming Lei
2013-05-17 9:36 ` Will Deacon
2013-05-17 9:48 ` Ming Lei
2013-05-17 9:54 ` Will Deacon
2013-05-17 10:07 ` Ming Lei
2013-05-17 15:59 ` Will Deacon [this message]
2013-05-28 10:18 ` Ming Lei
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