From: Andi Kleen <ak@linux.intel.com>
To: Namhyung Kim <namhyung@kernel.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Jiri Olsa <jolsa@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
LKML <linux-kernel@vger.kernel.org>,
Ian Rogers <irogers@google.com>,
Adrian Hunter <adrian.hunter@intel.com>,
linux-perf-users@vger.kernel.org,
Kan Liang <kan.liang@linux.intel.com>,
Leo Yan <leo.yan@linaro.org>,
Athira Rajeev <atrajeev@linux.vnet.ibm.com>,
James Clark <james.clark@arm.com>,
Xing Zhengjun <zhengjun.xing@linux.intel.com>
Subject: Re: [RFC/PATCHSET 00/19] perf stat: Cleanup counter aggregation (v1)
Date: Mon, 10 Oct 2022 20:25:16 -0400 [thread overview]
Message-ID: <ebc8e57e-1584-5f47-48d8-3bc38497799b@linux.intel.com> (raw)
In-Reply-To: <20221010053600.272854-1-namhyung@kernel.org>
On 10/10/2022 10:35 PM, Namhyung Kim wrote:
> Hello,
>
> Current perf stat code is somewhat hard to follow since it handles
> many combinations of PMUs/events for given display and aggregation
> options. This is my attempt to clean it up a little. ;-)
My main concern would be subtle regressions since there are so many
different combinations and way to travel through the code, and a lot of
things are not covered by unit tests. When I worked on the code it was
difficult to keep it all working. I assume you have some way to
enumerate them all and tested that the output is identical?
-Andi
next prev parent reply other threads:[~2022-10-11 0:25 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-10 5:35 [RFC/PATCHSET 00/19] perf stat: Cleanup counter aggregation (v1) Namhyung Kim
2022-10-10 5:35 ` [PATCH 01/19] perf tools: Save evsel->pmu in parse_events() Namhyung Kim
2022-10-10 22:21 ` Ian Rogers
2022-10-10 5:35 ` [PATCH 02/19] perf tools: Use pmu info in evsel__is_hybrid() Namhyung Kim
2022-10-10 22:31 ` Ian Rogers
2022-10-11 5:10 ` Namhyung Kim
2022-10-10 5:35 ` [PATCH 03/19] perf stat: Use evsel__is_hybrid() more Namhyung Kim
2022-10-10 22:32 ` Ian Rogers
2022-10-10 5:35 ` [PATCH 04/19] perf stat: Add aggr id for global mode Namhyung Kim
2022-10-10 22:46 ` Ian Rogers
2022-10-11 23:08 ` Namhyung Kim
2022-10-12 10:55 ` Jiri Olsa
2022-10-12 16:31 ` Namhyung Kim
2022-10-10 5:35 ` [PATCH 05/19] perf stat: Add cpu aggr id for no aggregation mode Namhyung Kim
2022-10-10 22:49 ` Ian Rogers
2022-10-12 10:40 ` Jiri Olsa
2022-10-12 16:27 ` Namhyung Kim
2022-10-10 5:35 ` [PATCH 06/19] perf stat: Add 'needs_sort' argument to cpu_aggr_map__new() Namhyung Kim
2022-10-10 22:53 ` Ian Rogers
2022-10-11 23:32 ` Namhyung Kim
2022-10-10 5:35 ` [PATCH 07/19] perf stat: Add struct perf_stat_aggr to perf_stat_evsel Namhyung Kim
2022-10-10 23:00 ` Ian Rogers
2022-10-11 23:37 ` Namhyung Kim
2022-10-10 5:35 ` [PATCH 08/19] perf stat: Allocate evsel->stats->aggr properly Namhyung Kim
2022-10-10 23:03 ` Ian Rogers
2022-10-11 23:38 ` Namhyung Kim
2022-10-10 5:35 ` [PATCH 09/19] perf stat: Aggregate events using evsel->stats->aggr Namhyung Kim
2022-10-10 23:11 ` Ian Rogers
2022-10-11 23:44 ` Namhyung Kim
2022-10-10 5:35 ` [PATCH 10/19] perf stat: Aggregate per-thread stats " Namhyung Kim
2022-10-10 23:17 ` Ian Rogers
2022-10-11 23:46 ` Namhyung Kim
2022-10-10 5:35 ` [PATCH 11/19] perf stat: Allocate aggr counts for recorded data Namhyung Kim
2022-10-10 23:18 ` Ian Rogers
2022-10-10 5:35 ` [PATCH 12/19] perf stat: Reset aggr counts for each interval Namhyung Kim
2022-10-10 23:20 ` Ian Rogers
2022-10-11 23:48 ` Namhyung Kim
2022-10-10 5:35 ` [PATCH 13/19] perf stat: Split process_counters() Namhyung Kim
2022-10-10 23:21 ` Ian Rogers
2022-10-10 5:35 ` [PATCH 14/19] perf stat: Add perf_stat_merge_counters() Namhyung Kim
2022-10-10 23:31 ` Ian Rogers
2022-10-11 23:55 ` Namhyung Kim
2022-10-10 5:35 ` [PATCH 15/19] perf stat: Add perf_stat_process_percore() Namhyung Kim
2022-10-10 23:32 ` Ian Rogers
2022-10-11 23:59 ` Namhyung Kim
2022-10-10 5:35 ` [PATCH 16/19] perf stat: Add perf_stat_process_shadow_stats() Namhyung Kim
2022-10-10 23:36 ` Ian Rogers
2022-10-10 5:35 ` [PATCH 17/19] perf stat: Display event stats using aggr counts Namhyung Kim
2022-10-10 23:38 ` Ian Rogers
2022-10-10 5:35 ` [PATCH 18/19] perf stat: Display percore events properly Namhyung Kim
2022-10-10 23:39 ` Ian Rogers
2022-10-10 5:36 ` [PATCH 19/19] perf stat: Remove unused perf_counts.aggr field Namhyung Kim
2022-10-10 23:40 ` Ian Rogers
2022-10-12 8:41 ` Jiri Olsa
2022-10-12 16:26 ` Namhyung Kim
2022-10-13 20:56 ` [PATCH] perf stat: Init aggr_map when reporting per-process stat Namhyung Kim
2022-10-11 0:25 ` Andi Kleen [this message]
2022-10-11 5:38 ` [RFC/PATCHSET 00/19] perf stat: Cleanup counter aggregation (v1) Namhyung Kim
2022-10-11 6:13 ` Ian Rogers
2022-10-12 3:55 ` Namhyung Kim
2022-10-11 11:57 ` Andi Kleen
2022-10-12 3:58 ` Namhyung Kim
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