linux-kernel - Re: [PATCH 3/3] perf: mark a dso if it's used

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Message-ID: <CANaxB-xffLyn00U-dHMxkEXQZ7nMBxTyTcfgJnaah0rBaDCrKg@mail.gmail.com>
Date:	Mon, 6 Aug 2012 23:50:53 +0400
From:	Andrey Wagin <avagin@...il.com>
To:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc:	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH 3/3] perf: mark a dso if it's used

2012/8/6 Arnaldo Carvalho de Melo <acme@...stprotocols.net>:
> Em Mon, Aug 06, 2012 at 02:01:59PM +0400, Andrew Vagin escreveu:
>> -     if (inject_build_ids) {
>> +     if (inject_build_ids || inject_sched_stat) {
>>               perf_inject.sample       = perf_event__inject_buildid;
>>               perf_inject.mmap         = perf_event__repipe_mmap;
>>               perf_inject.fork         = perf_event__repipe_task;
>>               perf_inject.tracing_data = perf_event__repipe_tracing_data;
>> -     } else if (inject_sched_stat) {
>> +     }
>> +
>> +     if (inject_sched_stat) {
>>               perf_inject.sample      = perf_event__sched_stat;
>>               perf_inject.ordered_samples = true;
>>       }
>
> Huh? so if inject_sched_stat is true we will first set
> perf_inject.sample to something, then to another?

Yes, we will. I though that it will be better then this:

if (inject_build_ids || inject_sched_stat) {
               perf_inject.mmap         = perf_event__repipe_mmap;
               perf_inject.fork         = perf_event__repipe_task;
               perf_inject.tracing_data = perf_event__repipe_tracing_data;
}

if (inject_build_ids) {
               perf_inject.sample       = perf_event__inject_buildid;
} else if (inject_sched_stat) {
               perf_inject.sample      = perf_event__sched_stat;
               perf_inject.ordered_samples = true;
}
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