linux-kernel - Re: [PATCH v2] x86/perf: Use static_call for x86_pmu.guest_get

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Date:   Mon, 25 Jan 2021 11:55:51 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Like Xu <like.xu@...ux.intel.com>
Cc:     Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...en8.de>, x86@...nel.org,
        "H . Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] x86/perf: Use static_call for x86_pmu.guest_get_msrs

On Fri, Jan 22, 2021 at 11:03:24AM +0800, Like Xu wrote:
> Clean up that CONFIG_RETPOLINE crud and replace the
> indirect call x86_pmu.guest_get_msrs with static_call().
> 

Looks good in principle, but the robot complains about a missing func
decl. I think you removed a little too much when you killed the inline
thing.