From: Peter Zijlstra <peterz@infradead.org>
To: Mark Rutland <mark.rutland@arm.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Will Deacon <Will.Deacon@arm.com>,
Dave P Martin <Dave.Martin@arm.com>,
Ingo Molnar <mingo@redhat.com>
Subject: Re: [PATCH 7/7] perf: kill perf_event_context::pmu
Date: Tue, 25 Feb 2014 12:31:00 +0100 [thread overview]
Message-ID: <20140225113100.GN9987@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <20140211175651.GA15200@e106331-lin.cambridge.arm.com>
On Tue, Feb 11, 2014 at 05:56:51PM +0000, Mark Rutland wrote:
> Another option would be to have a context per-pmu. Each context's pmu
> pointer would be valid, and (other than the case of software events) it
> doesn't make sense to place events from disparate PMUs into the same
> group anyway. Then you don't need a fixed sized pmu list in the context
> or some arcane list structs.
No it does make sense; for example on hardware that doesn't have a PMI
you can create a software event + hardware event group and have the
software interrupt read the hardware counter and still get 'some'
sampling.
next prev parent reply other threads:[~2014-02-25 11:31 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-10 17:44 [PATCH 0/7] Perf core cleanups for shared perf_event_contexts Mark Rutland
2014-02-10 17:44 ` [PATCH 1/7] perf: fix prototype of find_pmu_context Mark Rutland
2014-02-27 13:33 ` [tip:perf/core] perf: Fix prototype of find_pmu_context() tip-bot for Mark Rutland
2014-02-10 17:44 ` [PATCH 2/7] perf: remove redundant pmu assignment Mark Rutland
2014-02-27 13:33 ` [tip:perf/core] perf: Remove redundant PMU assignment tip-bot for Mark Rutland
2014-02-10 17:44 ` [PATCH 3/7] perf: kill perf_event_context_type Mark Rutland
2014-02-25 11:38 ` Peter Zijlstra
2014-02-27 11:46 ` Mark Rutland
2014-02-10 17:44 ` [PATCH 4/7] perf: be less pessimistic when scheduling events Mark Rutland
2014-02-10 17:58 ` Peter Zijlstra
2014-02-11 17:48 ` Mark Rutland
2014-02-25 11:29 ` Peter Zijlstra
2014-02-27 12:07 ` Mark Rutland
2014-02-10 17:44 ` [PATCH 5/7] perf: kill pmu::hrtimer_interval_ms Mark Rutland
2014-02-10 17:44 ` [PATCH 6/7] perf: Centralise context pmu disabling Mark Rutland
2014-02-10 18:08 ` Peter Zijlstra
2014-02-10 17:44 ` [PATCH 7/7] perf: kill perf_event_context::pmu Mark Rutland
2014-02-10 18:10 ` Peter Zijlstra
2014-02-11 17:56 ` Mark Rutland
2014-02-12 15:01 ` Dave Martin
2014-02-25 11:31 ` Peter Zijlstra [this message]
2014-02-27 11:48 ` Mark Rutland
2014-02-27 11:51 ` Peter Zijlstra
2014-02-27 12:30 ` Mark Rutland
2014-02-19 13:43 ` [PATCH 0/7] Perf core cleanups for shared perf_event_contexts Mark Rutland
2014-02-25 11:39 ` Peter Zijlstra
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