Messages in this thread | | | Date | Wed, 28 Oct 2015 11:58:25 +0000 | From | Will Deacon <> | Subject | Re: [PATCH] recordmcount: arm64: replace the ignored mcount call into nop |
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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
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