From: will.deacon@arm.com (Will Deacon)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] recordmcount: arm64: replace the ignored mcount call into nop
Date: Wed, 28 Oct 2015 11:58:25 +0000 [thread overview]
Message-ID: <20151028115825.GB29512@arm.com> (raw)
In-Reply-To: <20151028041619.4e44491a@grimm.local.home>
On Wed, Oct 28, 2015 at 04:16:19AM -0400, Steven Rostedt wrote:
> On Wed, 28 Oct 2015 16:04:05 +0800
> Li Bin <huawei.libin@huawei.com> wrote:
>
> > By now, the recordmcount only records the function that in
> > following sections:
> > .text/.ref.text/.sched.text/.spinlock.text/.irqentry.text/
> > .kprobes.text/.text.unlikely
> >
> > For the function that not in these sections, the call mcount
> > will be in place and not be replaced when kernel boot up. And
> > it will bring performance overhead, such as do_mem_abort (in
> > .exception.text section). This patch make the call mcount to
> > nop for this case in recordmcount.
>
> I can take this in my tree with an Ack from the ARM64 maintainers.
Looks like it does what it says on the tin:
Acked-by: Will Deacon <will.deacon@arm.com>
Will
next prev parent reply other threads:[~2015-10-28 11:58 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-28 8:04 [PATCH] recordmcount: arm64: replace the ignored mcount call into nop Li Bin
2015-10-28 8:16 ` Steven Rostedt
2015-10-28 11:58 ` Will Deacon [this message]
2015-10-29 5:43 ` AKASHI Takahiro
2015-10-29 13:35 ` kbuild test robot
2015-10-29 15:09 ` Will Deacon
2015-10-30 6:00 ` libin
2015-11-02 18:26 ` Steven Rostedt
2015-11-02 18:28 ` Will Deacon
2015-11-02 19:34 ` Steven Rostedt
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