From: Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>
To: Kim Phillips <kim.phillips@amd.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Stephane Eranian <eranian@google.com>
Cc: linux-kernel@vger.kernel.org, peterz@infradead.org,
acme@redhat.com, jolsa@redhat.com, namhyung@kernel.org,
irogers@google.com
Subject: Re: [PATCH v1 11/13] perf tools: improve IBS error handling
Date: Mon, 04 Oct 2021 20:44:47 -0300 [thread overview]
Message-ID: <25C12FFF-3F86-4733-B778-6C01A3138C25@gmail.com> (raw)
In-Reply-To: <aa40b532-0e95-76c0-6c9c-a91d45bf3468@amd.com>
On October 4, 2021 6:57:09 PM GMT-03:00, Kim Phillips <kim.phillips@amd.com> wrote:
>On 9/13/21 2:34 PM, Arnaldo Carvalho de Melo wrote:
>> Em Thu, Sep 09, 2021 at 12:56:58AM -0700, Stephane Eranian escreveu:
>>> From: Kim Phillips <kim.phillips@amd.com>
>>> +static void detect_amd(void)
>>> +{
>>> + FILE *inf = fopen("/proc/cpuinfo", "r");
>>> + char *res;
>>> +
>>> + if (!inf)
>>> + return;
>>> +
>>> + res = fgrep(inf, "vendor_id");
>>> +
>>> + if (res) {
>>> + char *s = strchr(res, ':');
>>> +
>>> + is_amd = s && !strcmp(s, ": AuthenticAMD\n");
>>> + free(res);
>>> + }
>>> + fclose(inf);
>>> +}
>>> +
>>
>> We have perf_env for such details, for instance in
>> tools/perf/util/sample-raw.c we have:o
>>
>> const char *arch_pf = perf_env__arch(evlist->env);
>> const char *cpuid = perf_env__cpuid(evlist->env);
>>
>> else if (arch_pf && !strcmp("x86", arch_pf) &&
>> cpuid && strstarts(cpuid, "AuthenticAMD") &&
>> evlist__has_amd_ibs(evlist)) {
>
>OK, I've rebased this 11/13 patch onto the new perf_env__{arch,cpuid}
>code, and posted it here:
>
>https://lore.kernel.org/lkml/20211004214114.188477-1-kim.phillips@amd.com/T/#mc4c9c582e3816ab31af6d0187e6803de1a98ac84
>
>The following 12/13 patch in this series changes, too, but since it
>depends on prior patches in the series, I'll reply-all to 12/13 with its
>new version.
>
>Arnaldo, would it be ok to apply the two new patches that replace this
>11/13? They don't depend on any others in this series, and it would
>save Stephane from having to carry them.
I'll work in this tomorrow, thanks
- Arnaldo
>
>Thanks,
>
>Kim
next prev parent reply other threads:[~2021-10-04 23:46 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-09 7:56 [PATCH v1 00/13] perf/x86/amd: Add AMD Fam19h Branch Sampling support Stephane Eranian
2021-09-09 7:56 ` [PATCH v1 01/13] perf/core: add union to struct perf_branch_entry Stephane Eranian
2021-09-09 19:03 ` Peter Zijlstra
2021-09-10 12:09 ` Michael Ellerman
2021-09-10 14:16 ` Michael Ellerman
2021-09-15 6:03 ` Stephane Eranian
2021-09-17 6:37 ` Madhavan Srinivasan
2021-09-17 6:48 ` Stephane Eranian
2021-09-17 7:05 ` Michael Ellerman
2021-09-17 7:39 ` Stephane Eranian
2021-09-17 12:38 ` Michael Ellerman
2021-09-17 16:42 ` Stephane Eranian
2021-09-19 10:27 ` Michael Ellerman
2021-09-09 7:56 ` [PATCH v1 02/13] x86/cpufeatures: add AMD Fam19h Branch Sampling feature Stephane Eranian
2021-09-09 7:56 ` [PATCH v1 03/13] perf/x86/amd: add AMD Fam19h Branch Sampling support Stephane Eranian
2021-09-09 10:44 ` kernel test robot
2021-09-09 15:33 ` kernel test robot
2021-09-09 7:56 ` [PATCH v1 04/13] perf/x86/amd: add branch-brs helper event for Fam19h BRS Stephane Eranian
2021-09-09 7:56 ` [PATCH v1 05/13] perf/x86/amd: enable branch sampling priv level filtering Stephane Eranian
2021-09-09 7:56 ` [PATCH v1 06/13] perf/x86/amd: add AMD branch sampling period adjustment Stephane Eranian
2021-09-09 7:56 ` [PATCH v1 07/13] perf/core: add idle hooks Stephane Eranian
2021-09-09 9:15 ` Peter Zijlstra
2021-09-09 10:42 ` kernel test robot
2021-09-09 11:02 ` kernel test robot
2021-09-09 7:56 ` [PATCH v1 08/13] perf/x86/core: " Stephane Eranian
2021-09-09 9:16 ` Peter Zijlstra
2021-09-09 7:56 ` [PATCH v1 09/13] perf/x86/amd: add idle hooks for branch sampling Stephane Eranian
2021-09-09 9:20 ` Peter Zijlstra
2021-09-09 7:56 ` [PATCH v1 10/13] perf tools: add branch-brs as a new event Stephane Eranian
2021-09-09 7:56 ` [PATCH v1 11/13] perf tools: improve IBS error handling Stephane Eranian
2021-09-13 19:34 ` Arnaldo Carvalho de Melo
2021-10-04 21:57 ` Kim Phillips
2021-10-04 23:44 ` Arnaldo Carvalho de Melo [this message]
2021-09-09 7:56 ` [PATCH v1 12/13] perf tools: improve error handling of AMD Branch Sampling Stephane Eranian
2021-10-04 21:57 ` Kim Phillips
2021-09-09 7:57 ` [PATCH v1 13/13] perf report: add addr_from/addr_to sort dimensions Stephane Eranian
2021-09-09 8:55 ` [PATCH v1 00/13] perf/x86/amd: Add AMD Fam19h Branch Sampling support Peter Zijlstra
2021-09-15 5:55 ` Stephane Eranian
2021-09-15 9:04 ` Peter Zijlstra
2021-10-28 18:30 ` Stephane Eranian
2021-09-27 20:17 ` Song Liu
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