[PATCH v4 0/5] A mechanism for efficient support for per-function metrics

Peter Zijlstra peterz at infradead.org
Wed Apr 9 07:29:00 PDT 2025


On Tue, Apr 08, 2025 at 06:15:25PM +0100, mark.barnett at arm.com wrote:

>     perf record -T --sample-cpu --call-graph fp,4 --user-callchains \
>         -k CLOCK_MONOTONIC_RAW \
>         -e '{cycles/period=999700,alt-period=300/,instructions,branch-misses,cache-references,cache-misses}:uS' \
>         benchmark 0 1

>     perf record -i -vvv -e '{cycles/period=999700,alt-period=300/,instructions}:uS' benchmark 0 1

Should be updated to read something like:

	cycles/period=1000000,hf-period=300/

right?

Also, cycles/freq=1000,hf-period=300/ should now also work, right?

Anyway, the kernel bits look good to me now (with the nits fixed), so:

Acked-by: Peter Zijlstra (Intel) <peterz at infradead.org>



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