Re: [PATCH] ARM: Mark ret_fast_syscall as a function

From: Drew Richardson
Date: Thu Aug 06 2015 - 13:54:09 EST


On Thu, Aug 06, 2015 at 06:30:40PM +0100, Nicolas Pitre wrote:
> On Thu, 6 Aug 2015, Drew Richardson wrote:
>
> > On Tue, Jul 14, 2015 at 01:45:57PM +0100, Drew Richardson wrote:
> > > ret_fast_syscall runs when user space makes a syscall. However it
> > > needs to be marked as such so the ELF information is correct. Before
> > > it was:
> > >
> > > 101: 8000f300 0 NOTYPE LOCAL DEFAULT 2 ret_fast_syscall
> > >
> > > But with this change it correctly shows as:
> > >
> > > 101: 8000f300 96 FUNC LOCAL DEFAULT 2 ret_fast_syscall
> > >
> > > I see this function when using perf to unwind call stacks from kernel
> > > space to user space. Without this change I would need to add some
> > > special case logic when using the vmlinux ELF information.
> > >
> > > Signed-off-by: Drew Richardson <drew.richardson@xxxxxxx>
> >
> > I haven't heard any further comments on this, did this get merged and
> > I just didn't notice? Or did I forget to add someone?
>
> Most likely that it is so trivial that nobody paid much attention.
>
> FWIW, you can add
>
> Acked-by: Nicolas Pitre <nico@xxxxxxxxxx>
>
> and submit it here: http://www.arm.linux.org.uk/developer/patches/
>
>
> Nicolas
>

Done, thanks.
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