linux-kernel - Re: [PATCH] hw_breakpoint: Remove unused '__register_perf_hw

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Date:   Fri, 15 May 2020 14:45:29 +0530
From:   Bhupesh Sharma <bhsharma@...hat.com>
To:     Mark Rutland <mark.rutland@....com>,
        Frederic Weisbecker <fweisbec@...il.com>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Bhupesh SHARMA <bhupesh.linux@...il.com>,
        Will Deacon <will@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>
Subject: Re: [PATCH] hw_breakpoint: Remove unused '__register_perf_hw_breakpoint'
 declaration

Hi Peter, Frederic, Ingo

On Thu, Apr 30, 2020 at 9:49 AM Bhupesh Sharma <bhsharma@...hat.com> wrote:
>
> Hi Mark,
>
> Thanks for the review.
>
> On Tue, Apr 28, 2020 at 3:37 PM Mark Rutland <mark.rutland@....com> wrote:
> >
> > Hi Bhupesh,
> >
> > On Tue, Apr 28, 2020 at 02:22:17PM +0530, Bhupesh Sharma wrote:
> > > commit b326e9560a28 ("hw-breakpoints: Use overflow handler instead of
> > > the event callback") removed '__register_perf_hw_breakpoint' function
> > > usage and replaced it with 'register_perf_hw_breakpoint' function.
> > >
> > > Remove the left-over unused '__register_perf_hw_breakpoint' declaration
> > > from 'hw_breakpoint.h' as well.
> > >
> > > Cc: Mark Rutland <mark.rutland@....com>
> > > Cc: Will Deacon <will@...nel.org>
> > > Cc: Catalin Marinas <catalin.marinas@....com>
> > > Signed-off-by: Bhupesh Sharma <bhsharma@...hat.com>
> >
> > This is generic code, so I'm a bit confused as to why you've sent it to
> > us. I'd expect this to go via the perf core maintainers (cc'd).
>
> Oops, my bad. Seems my git patch sending script messed up while
> picking up the perf maintainers (who should have been Cc'ed on the
> patch) :(
>
> Thanks for adding them in the Cc list.
>
> Hi Peter, Frederic, Ingo - Kindly help review this patch and help
> apply the patch (if suitable).

Ping. Any comments on this patch?

Thanks,
Bhupesh

> > FWIW, this looks sane to me, so:
> >
> > Acked-by: Mark Rutland <mark.rutland@....com>
> >
> > Mark.
> >
> > > ---
> > >  include/linux/hw_breakpoint.h | 3 ---
> > >  1 file changed, 3 deletions(-)
> > >
> > > diff --git a/include/linux/hw_breakpoint.h b/include/linux/hw_breakpoint.h
> > > index 6058c3844a76..fe1302da8e0f 100644
> > > --- a/include/linux/hw_breakpoint.h
> > > +++ b/include/linux/hw_breakpoint.h
> > > @@ -72,7 +72,6 @@ register_wide_hw_breakpoint(struct perf_event_attr *attr,
> > >                           void *context);
> > >
> > >  extern int register_perf_hw_breakpoint(struct perf_event *bp);
> > > -extern int __register_perf_hw_breakpoint(struct perf_event *bp);
> > >  extern void unregister_hw_breakpoint(struct perf_event *bp);
> > >  extern void unregister_wide_hw_breakpoint(struct perf_event * __percpu *cpu_events);
> > >
> > > @@ -115,8 +114,6 @@ register_wide_hw_breakpoint(struct perf_event_attr *attr,
> > >                           void *context)              { return NULL; }
> > >  static inline int
> > >  register_perf_hw_breakpoint(struct perf_event *bp)   { return -ENOSYS; }
> > > -static inline int
> > > -__register_perf_hw_breakpoint(struct perf_event *bp)         { return -ENOSYS; }
> > >  static inline void unregister_hw_breakpoint(struct perf_event *bp)   { }
> > >  static inline void
> > >  unregister_wide_hw_breakpoint(struct perf_event * __percpu *cpu_events)      { }
> > > --
> > > 2.7.4
> > >
> >