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Message-ID: <20150724011743.GA5847@us.ibm.com> Date: Thu, 23 Jul 2015 18:17:43 -0700 From: Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com> To: Peter Zijlstra <peterz@...radead.org> Cc: Ingo Molnar <mingo@...hat.com>, Arnaldo Carvalho de Melo <acme@...nel.org>, Michael Ellerman <mpe@...erman.id.au>, linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org, sparclinux@...r.kernel.org Subject: Re: [PATCH v3 7/8] perf: Define PMU_TXN_READ interface Peter Zijlstra [peterz@...radead.org] wrote: | On Wed, Jul 22, 2015 at 04:19:16PM -0700, Sukadev Bhattiprolu wrote: | > Peter Zijlstra [peterz@...radead.org] wrote: | > | I've not woken up yet, and not actually fully read the email, but can | > | you stuff the entire above chunk inside the IPI? | > | | > | I think you could then actually optimize __perf_event_read() as well, | > | because all these events should be on the same context, so no point in | > | calling update_*time*() for every event or so. | > | | > | > Do you mean something like this (will move the rename to a separate | > patch before posting): | | More like so.. please double check, I've not even had tea yet. Yeah, I realized I had ignored the 'event->cpu' spec. Will try this out. Thanks, Sukadev -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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