Subject: Re: [PATCH RFC 4/7] perf pmu: Rename uncore symbols to include system PMUs

From: Jiri Olsa <[email-masked]>
Date: Mon, 10 Feb 2020 13:07:15 +0100

On Fri, Jan 24, 2020 at 10:35:02PM +0800, John Garry wrote:

SNIP

>  		/* Only split the uncore group which members use alias */
> -		if (!evsel->use_uncore_alias)
> +		if (!evsel->use_uncore_or_system_alias)
>  			goto out;
>  
>  		/* The events must be from the same uncore block */
> diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
> index 8b99fd312aae..569aba4cec89 100644
> --- a/tools/perf/util/pmu.c
> +++ b/tools/perf/util/pmu.c
> @@ -623,7 +623,7 @@ static struct perf_cpu_map *pmu_cpumask(const char *name)
>  	return NULL;
>  }
>  
> -static bool pmu_is_uncore(const char *name)
> +static bool pmu_is_uncore_or_sys(const char *name)

so we detect uncore PMU by checking for cpumask file

I don't see the connection here with the sysid or '_sys' checking,
that's just telling which ID to use when looking for an alias, no?
shouldn't that be separated?

jirka

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