linux-kernel - Re: [PATCH v5 09/13] perf/x86/amd: add idle hooks for branch sampling

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Date:   Mon, 31 Jan 2022 23:34:12 -0800
From:   Stephane Eranian <eranian@...gle.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     linux-kernel@...r.kernel.org, kim.phillips@....com,
        acme@...hat.com, jolsa@...hat.com, songliubraving@...com
Subject: Re: [PATCH v5 09/13] perf/x86/amd: add idle hooks for branch sampling

On Thu, Jan 27, 2022 at 5:07 AM Peter Zijlstra <peterz@...radead.org> wrote:
>
> On Wed, Jan 26, 2022 at 03:34:50PM -0800, Stephane Eranian wrote:
> > +static inline void perf_lopwr_cb(bool mode)
> > +{
> > +     /* key enabled only when BRS is available */
> > +     if (static_branch_unlikely(&perf_lopwr_needed))
> > +             perf_amd_brs_lopwr_cb(mode);
> > +}
>
> static_call() might be better at this point..
Ok, I will fix this in v6.
Thanks.