[PATCH] [RFC]ARM: ftrace: pause/unpause function graph tracer in cpu_suspend()

[liang wang]

Hi Russell

On Wed, 24 Feb 2021 at 19:20, Russell King - ARM Linux admin
<linux@xxxxxxxxxxxxxxx> wrote:
>
> On Wed, Feb 24, 2021 at 07:14:54PM +0800, liang wang wrote:
> > Hi Russell,
> >
> > On Wed, 24 Feb 2021 at 18:39, Russell King - ARM Linux admin
> > <linux@xxxxxxxxxxxxxxx> wrote:
> > >
> > > On Wed, Feb 24, 2021 at 06:35:47PM +0800, liang wang wrote:
> > > > Hi,all
> > > >
> > > > ftrace function_graph tracer always cause kernel panic on my ARM device with
> > > > multiple CPUs, I found a solution for the problem on ARM64, refers to
> > > > the patch above,
> > > > I was wondering why this bugfix on ARM64 hasn't been upstreamed to ARM,
> > >
> > > Patches get applied to the ARM tree after they've been submitted to
> > > the patch system. If they don't get submitted to the patch system,
> > > then they get buried and forgotten.
> > >
> > > --
> > > RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
> > > FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!
> >
> > Thanks for replying,
> > So I refers to the solution on ARM64 and sent my patch on January as below.
> >
> > http://lists.infradead.org/pipermail/linux-arm-kernel/2021-January/628460.html
> >
> > But I haven't got any replies on my patch. How can I get my patch reviewed
> > and submitted to the patch system?
>
> I don't use ftrace, so I'm not the right person to review it - but it
> seems that lots of patches for ARM are left to me to try and review,
> despite me not knowing sufficient to know whether it's correct or not.
> This isn't sustainable.
>
> > Should I resend a new patch to this maillist?
>
> You can try but I suspect the same thing will happen. The only thing I
> can think is if you put it in the patch system and I apply it, if
> someone has a problem with it, they'll shout about it soon enough. Not
> the best way, but I don't see much other option.
>
> --
> RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
> FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!
Thanks for answering my question.
I will upload it to the patch system as needed, and see whether there
is a problem
or someone to discuss with.