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Subject: Re: [PATCH 1/5] perf evlist: Export perf_evlist__propagate_maps()
To:     Adrian Hunter <adrian.hunter@intel.com>, <peterz@infradead.org>,
        <mingo@redhat.com>, <acme@kernel.org>, <mark.rutland@arm.com>,
        <alexander.shishkin@linux.intel.com>, <jolsa@kernel.org>,
        <namhyung@kernel.org>, <irogers@google.com>,
        <kan.liang@linux.intel.com>, <linux-kernel@vger.kernel.org>,
        <linux-perf-users@vger.kernel.org>
References: <20230704074217.240939-1-yangjihong1@huawei.com>
 <20230704074217.240939-2-yangjihong1@huawei.com>
 <180925f8-57f3-c97a-15c4-db2c73abe4a2@intel.com>
From:   Yang Jihong <yangjihong1@huawei.com>
Message-ID: <a7480404-c6ad-8892-b9d2-d2458c2e686b@huawei.com>
Date:   Wed, 12 Jul 2023 22:30:36 +0800
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Hello,

On 2023/7/11 21:12, Adrian Hunter wrote:
> On 4/07/23 10:42, Yang Jihong wrote:
>> For dummy events that keep tracking, we may need to modify its cpu_maps.
>> For example, change the cpu_maps to track side-band events for all CPUS.
>> Export perf_evlist__propagate_maps () to support this scenario.
> 
> __perf_evlist__propagate_maps() is quite low-level so it would be better
> to avoid exporting it.
> 
> 
Or can we export it via internal/evlist.h?
Because as mentioned in patch 2:

void perf_evsel__go_system_wide(struct perf_evlist *evlist, struct 
perf_evsel *evsel)
{
if (!evsel->system_wide) {
evsel->system_wide = true;
if (evlist->needs_map_propagation)
__perf_evlist__propagate_maps(evlist, evsel);
}
}
This interface needs to invoke __perf_evlist__propagate_maps.

Thanks,
Yang