linux-kernel - Re: [PATCH 07/10] perf: Define common uncore capabilities

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Message-ID: <993147ab-26b5-e497-d50f-0f500c8c81b8@arm.com>
Date: Wed, 13 Mar 2024 11:23:09 +0000
From: James Clark <james.clark@....com>
To: Robin Murphy <robin.murphy@....com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
 Jiri Olsa <jolsa@...nel.org>, Ian Rogers <irogers@...gle.com>,
 Adrian Hunter <adrian.hunter@...el.com>, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, x86@...nel.org,
 linux-perf-users@...r.kernel.org, jialong.yang@...ngroup.cn,
 Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
 Arnaldo Carvalho de Melo <acme@...nel.org>,
 Namhyung Kim <namhyung@...nel.org>, Mark Rutland <mark.rutland@....com>,
 Will Deacon <will@...nel.org>
Subject: Re: [PATCH 07/10] perf: Define common uncore capabilities



On 12/03/2024 17:34, Robin Murphy wrote:
> Nearly all uncore/system PMUs share a common set of capbilities,
> so let's wrap those up in a single macro for ease of use.
> 
> Signed-off-by: Robin Murphy <robin.murphy@....com>
> ---
>  include/linux/perf_event.h | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
> index b1fd832ed8bf..5d5db122005b 100644
> --- a/include/linux/perf_event.h
> +++ b/include/linux/perf_event.h
> @@ -293,6 +293,9 @@ struct perf_event_pmu_context;
>  #define PERF_PMU_CAP_EXTENDED_HW_TYPE		0x0100
>  #define PERF_PMU_CAP_NO_COMMON_EVENTS		0x0200
>  
> +#define PERF_PMU_UNCORE_CAPS \
> +(PERF_PMU_CAP_NO_SAMPLING| PERF_PMU_CAP_NO_EXCLUDE | PERF_PMU_CAP_NO_COMMON_EVENTS)
> +

The most minor of nits: missing space before |. There is another one in
another commit that triggers checkpatch but that line gets deleted anyway.

>  struct perf_output_handle;
>  
>  #define PMU_NULL_DEV	((void *)(~0UL))