linux-kernel - Re: [RFC] libperf: Add support for user space counter access

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Message-ID: <20200811110246.GD2674@hirez.programming.kicks-ass.net>
Date:   Tue, 11 Aug 2020 13:02:46 +0200
From:   peterz@...radead.org
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     Rob Herring <robh@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>
Subject: Re: [RFC] libperf: Add support for user space counter access

On Tue, Aug 11, 2020 at 12:50:27PM +0200, Jiri Olsa wrote:

> if it works for all events, which I'm not sure of

That's what we have cap_user_rdpmc for.