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SubjectRe: [PATCH v1 0/3] perf list: Remove duplicate PMUs
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On 11/07/2023 06:58, Ian Rogers wrote:
> When there are multiple PMUs differing by ordered suffixes only
> display one. This avoids repeated listing of events, in particular
> when there are 10s of uncore PMUs. This also helps speed the all PMU
> event tests.
>
> Before:
> ```
> $ perf list
> ...
> uncore_imc_free_running_0/data_read/ [Kernel PMU event]
> uncore_imc_free_running_0/data_total/ [Kernel PMU event]
> uncore_imc_free_running_0/data_write/ [Kernel PMU event]
> uncore_imc_free_running_1/data_read/ [Kernel PMU event]
> uncore_imc_free_running_1/data_total/ [Kernel PMU event]
> uncore_imc_free_running_1/data_write/ [Kernel PMU event]
> ```
>
> After:
> ```
> $ perf list
> ...
> uncore_imc_free_running/data_read/ [Kernel PMU event]
> uncore_imc_free_running/data_total/ [Kernel PMU event]
> uncore_imc_free_running/data_write/ [Kernel PMU event]

So with this change can we run something like:

perf stat -e uncore_imc_free_running/data_read/

?

If so, does that match all PMUs whose name beings with
"uncore_imc_free_running" (and give aggregate result for those PMUs)?

Thanks,
John

> ```
>
> The PMUs are sorted by name then suffix as a part of this change.
>
> Ian Rogers (3):
> perf pmus: Sort pmus by name then suffix
> perf pmus: Add scan that ignores duplicates, use for perf list
> perf pmus: Don't print PMU suffix in list
>
> tools/perf/util/pmus.c | 107 +++++++++++++++++++++++++++++++++++++++--
> 1 file changed, 102 insertions(+), 5 deletions(-)
>

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