Re: [PATCH 1/2] x86: profiling: remove lock functions hack for !FRAME_POINTER

[Chen Zhongjin]

On 2023/4/12 18:01, David Laight wrote:
> From: Chen Zhongjin
> > Sent: 12 April 2023 08:02
> ...
> > > 4. !CONFIG_FRAME_POINTER is probably even more rare today than it was in
> > >      2006
> > No. !CONFIG_FRAME_POINTER is more common today because of UNWINDER_ORC.
> > And that is why the bug is triggered more frequently.
> CONFIG_FRAME_POINTER is pretty much required (on x86-64)
> for the user copy checks that are enabled in distro kernels.

Thanks for reminding.. I know little about distro kernels.

I though at least !CONFIG_FRAME_POINTER is more common than it was in 2006.
Not investigated but just because UNWINDER_ORC is defconfig and it 
disables CONFIG_FRAME_POINTER.

Anyway, I kept the CONFIG_FRAME_POINTER not removed so it won't be affected.

Best,
Chen
> 	David
>
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