linux-kernel - Re: [RFC 1/3] perf, tools: Support wildcards on pmu name in dynamic pmu events

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Date:   Tue, 27 Feb 2018 15:05:39 -0800
From:   Andi Kleen <ak@...ux.intel.com>
To:     Agustin Vega-Frias <agustinv@...eaurora.org>
Cc:     linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>, timur@...eaurora.org
Subject: Re: [RFC 1/3] perf, tools: Support wildcards on pmu name in dynamic
 pmu events

On Tue, Feb 27, 2018 at 05:34:06PM -0500, Agustin Vega-Frias wrote:
> Starting on v4.12 event parsing code for dynamic pmu events already
> supports prefix-based matching of multiple pmus when creating dynamic
> events. E.g., in a system with the following dynamic pmus:
> 
>     mypmu_0
>     mypmu_1
>     mypmu_2
>     mypmu_4
> 
> passing mypmu/<config>/ as an event spec will result in the creation
> of the event in all of the pmus. This change expands this matching
> through the use of fnmatch so glob-like expressions can be used to
> create events in multiple pmus. E.g., in the system described above
> if a user only wants to create the event in mypmu_0 and mypmu_1,
> mypmu_[01]/<config>/ can be passed.

Missing documentation for the globbing.

The rest looked ok to me. 

Reviewed-by: Andi Kleen <ak@...ux.intel.com>

-Andi