linux-kernel - Re: [PATCH v5 1/8] perf record ibs: Warn about sampling period skew

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Date:   Fri, 3 Jun 2022 10:58:13 +0530
From:   Ravi Bangoria <ravi.bangoria@....com>
To:     acme@...nel.org, namhyung@...nel.org
Cc:     kan.liang@...ux.intel.com, jolsa@...nel.org, irogers@...gle.com,
        peterz@...radead.org, rrichter@....com, mingo@...hat.com,
        mark.rutland@....com, tglx@...utronix.de, bp@...en8.de,
        james.clark@....com, leo.yan@...aro.org, ak@...ux.intel.com,
        eranian@...gle.com, like.xu.linux@...il.com, x86@...nel.org,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        sandipan.das@....com, ananth.narayan@....com, kim.phillips@....com,
        santosh.shukla@....com, Ravi Bangoria <ravi.bangoria@....com>
Subject: Re: [PATCH v5 1/8] perf record ibs: Warn about sampling period skew

On 03-Jun-22 10:42 AM, Ravi Bangoria wrote:
>>> +       if (ibs_fetch_pmu && ibs_fetch_pmu->type == evsel_pmu->type) {
>>> +               if (attr->config & (1ULL << 59)) {
>>
>> It'd be nice if we used a macro or something instead of the
>> magic number.
>>
>>> +                       ibs_l3miss_warn();
>>> +                       warned_once = 1;
>>> +               }
>>> +       } else if (ibs_op_pmu && ibs_op_pmu->type == evsel_pmu->type) {
>>> +               if (attr->config & (1ULL << 16)) {
>>
>> Ditto.
> 
> Thanks for the review, Namhyung.
> 
> Arnaldo, Would you be able to squash below trivial patch into original
> patch? Please let me know if you want me to respin the series instead.

I'm planning to respin with asprintf() change. Sorry for the noise.

Thanks,
Ravi