From: Paul Mackerras <paulus@samba.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Jaswinder Singh Rajput <jaswinder@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>,
x86 maintainers <x86@kernel.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/6 -tip] perf stat: treat same behaviour for all CYCLES and CLOCKS
Date: Fri, 3 Jul 2009 18:18:04 +1000 [thread overview]
Message-ID: <19021.48828.428272.100850@cargo.ozlabs.ibm.com> (raw)
In-Reply-To: <20090701113915.GG15958@elte.hu>
Ingo Molnar writes:
> Other 'compound' events might be possible too: for example a new
> cache-hits field could be is cache-refs minus cache-misses.
Hmmm, on the MPC7450 family there are events for cache-hits and
cache-misses, so there it would be nice to be able to ask for
cache-refs and have it compute cache-hits plus cache-misses.
> I.e. the simplest model for 'compound' events would be:
>
> X = A / B
> X = A - B
> X = A + B
>
> We could list them in the event table, with a flag that specifies
> which arithmetic operation connects two 'atomic' counters.
>
> Then the adding of a new compound event would only be the matter of
> adding one more line to the event table.
Sounds nice. If we do this we should ensure that the two events
get put into one group if possible.
Paul.
next prev parent reply other threads:[~2009-07-03 8:18 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-01 9:33 [GIT-PULL -tip][PATCH 0/6] perf_counter patches Jaswinder Singh Rajput
2009-07-01 9:35 ` [PATCH 1/6 -tip] perf stat: define MATCH_EVENT for easy attrs checking Jaswinder Singh Rajput
2009-07-01 9:36 ` [PATCH 2/6 -tip] perf stat: treat same behaviour for all CYCLES and CLOCKS Jaswinder Singh Rajput
2009-07-01 9:37 ` [PATCH 3/6 -tip] perf_counter: Add Generalized Hardware vectored co-processor support for AMD Jaswinder Singh Rajput
2009-07-01 9:38 ` [PATCH 4/6 -tip] perf_counter: Add Generalized Hardware interrupt " Jaswinder Singh Rajput
2009-07-01 9:38 ` [PATCH 5/6 -tip] perf_counter: Add hardware vector events for nehalem Jaswinder Singh Rajput
2009-07-01 9:40 ` [PATCH 6/6 -tip] perf_counter: Add hardware interrupt events for nehalem, core2 and atom Jaswinder Singh Rajput
2009-07-01 11:24 ` [PATCH 4/6 -tip] perf_counter: Add Generalized Hardware interrupt support for AMD Ingo Molnar
2009-07-03 12:01 ` Jaswinder Singh Rajput
2009-07-04 10:22 ` Ingo Molnar
2009-07-04 14:17 ` Jaswinder Singh Rajput
2009-07-05 1:11 ` Ingo Molnar
2009-07-05 4:29 ` Jaswinder Singh Rajput
2009-07-05 8:04 ` Ingo Molnar
2009-07-05 9:01 ` Jaswinder Singh Rajput
2009-07-05 9:55 ` Jaswinder Singh Rajput
2009-07-01 11:20 ` [PATCH 3/6 -tip] perf_counter: Add Generalized Hardware vectored co-processor " Ingo Molnar
2009-07-01 11:27 ` Ingo Molnar
2009-07-01 11:40 ` Jaswinder Singh Rajput
2009-07-01 11:49 ` Ingo Molnar
2009-07-02 9:44 ` [PATCH 1/2 -tip] perf_counter: Add generalized hardware vectored co-processor support for AMD and Intel Corei7/Nehalem Jaswinder Singh Rajput
2009-07-02 9:45 ` [PATCH 2/2 -tip] perf_counter: Add generalized hardware interrupt support for AMD and Intel Corei7/Nehalem, Core2 and Atom Jaswinder Singh Rajput
2009-07-03 10:33 ` Ingo Molnar
2009-07-03 7:38 ` [PATCH 1/2 -tip] perf_counter: Add generalized hardware vectored co-processor support for AMD and Intel Corei7/Nehalem Jaswinder Singh Rajput
2009-07-03 9:30 ` Ingo Molnar
2009-07-03 10:10 ` Jaswinder Singh Rajput
2009-07-03 12:17 ` [PATCH 3/3 -tip] perf list: avoid replicating functions Jaswinder Singh Rajput
2009-07-04 9:50 ` Ingo Molnar
2009-07-03 10:29 ` [PATCH 1/2 -tip] perf_counter: Add generalized hardware vectored co-processor support for AMD and Intel Corei7/Nehalem Ingo Molnar
2009-07-03 11:55 ` Jaswinder Singh Rajput
2009-07-03 12:49 ` Jaswinder Singh Rajput
2009-07-03 13:25 ` Jaswinder Singh Rajput
2009-07-04 10:03 ` Ingo Molnar
2009-07-04 14:05 ` Jaswinder Singh Rajput
2009-07-04 9:49 ` Ingo Molnar
2009-07-04 13:54 ` Jaswinder Singh Rajput
2009-07-01 11:39 ` [PATCH 2/6 -tip] perf stat: treat same behaviour for all CYCLES and CLOCKS Ingo Molnar
2009-07-03 8:18 ` Paul Mackerras [this message]
2009-07-03 8:27 ` Ingo Molnar
2009-07-01 11:30 ` [tip:perfcounters/urgent] perf stat: Define MATCH_EVENT for easy attr checking tip-bot for Jaswinder Singh Rajput
2009-07-01 11:45 ` [GIT-PULL -tip][PATCH 0/6] perf_counter patches Ingo Molnar
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