linux-kernel - Re: [PATCH] perf list: Display pmu prefix for partially supported hybrid cache events

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Message-ID: <YU4fGqAHXZQavw09@kernel.org>
Date:   Fri, 24 Sep 2021 15:55:22 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Jin Yao <yao.jin@...ux.intel.com>
Cc:     jolsa@...nel.org, peterz@...radead.org, mingo@...hat.com,
        alexander.shishkin@...ux.intel.com, Linux-kernel@...r.kernel.org,
        linux-perf-users@...r.kernel.org, ak@...ux.intel.com,
        kan.liang@...el.com, yao.jin@...el.com
Subject: Re: [PATCH] perf list: Display pmu prefix for partially supported
 hybrid cache events

Em Thu, Sep 09, 2021 at 02:18:44PM +0800, Jin Yao escreveu:
> Part of hardware cache events are only available on one CPU PMU.
> For example, 'L1-dcache-load-misses' is only available on cpu_core.
> perf list should clearly report this info.
> 
> root@...pl-adl-s-2:~# ./perf list
> 
> Before:
>   L1-dcache-load-misses                              [Hardware cache event]
>   L1-dcache-loads                                    [Hardware cache event]
>   L1-dcache-stores                                   [Hardware cache event]
>   L1-icache-load-misses                              [Hardware cache event]
>   L1-icache-loads                                    [Hardware cache event]
>   LLC-load-misses                                    [Hardware cache event]
>   LLC-loads                                          [Hardware cache event]
>   LLC-store-misses                                   [Hardware cache event]
>   LLC-stores                                         [Hardware cache event]
>   branch-load-misses                                 [Hardware cache event]
>   branch-loads                                       [Hardware cache event]
>   dTLB-load-misses                                   [Hardware cache event]
>   dTLB-loads                                         [Hardware cache event]
>   dTLB-store-misses                                  [Hardware cache event]
>   dTLB-stores                                        [Hardware cache event]
>   iTLB-load-misses                                   [Hardware cache event]
>   node-load-misses                                   [Hardware cache event]
>   node-loads                                         [Hardware cache event]
>   node-store-misses                                  [Hardware cache event]
>   node-stores                                        [Hardware cache event]
> 
> After:
>   L1-dcache-loads                                    [Hardware cache event]
>   L1-dcache-stores                                   [Hardware cache event]
>   L1-icache-load-misses                              [Hardware cache event]
>   LLC-load-misses                                    [Hardware cache event]
>   LLC-loads                                          [Hardware cache event]
>   LLC-store-misses                                   [Hardware cache event]
>   LLC-stores                                         [Hardware cache event]
>   branch-load-misses                                 [Hardware cache event]
>   branch-loads                                       [Hardware cache event]
>   cpu_atom/L1-icache-loads/                          [Hardware cache event]
>   cpu_core/L1-dcache-load-misses/                    [Hardware cache event]
>   cpu_core/node-load-misses/                         [Hardware cache event]
>   cpu_core/node-loads/                               [Hardware cache event]
>   dTLB-load-misses                                   [Hardware cache event]
>   dTLB-loads                                         [Hardware cache event]
>   dTLB-store-misses                                  [Hardware cache event]
>   dTLB-stores                                        [Hardware cache event]
>   iTLB-load-misses                                   [Hardware cache event]

Thanks, applied.

- Arnaldo