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Message-ID: <87wprd8uct.fsf@ashishki-desk.ger.corp.intel.com>
Date: Wed, 13 Jan 2016 15:46:58 +0200
From: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
To: Peter Zijlstra <peterz@...radead.org>, mingo@...nel.org,
eranian@...gle.com
Cc: linux-kernel@...r.kernel.org, vince@...ter.net, dvyukov@...gle.com,
andi@...stfloor.org, jolsa@...hat.com
Subject: Re: [RFC][PATCH 12/12] perf: Collapse and fix event_function_call() users
Peter Zijlstra <peterz@...radead.org> writes:
> @@ -2250,7 +2269,11 @@ static void __perf_event_enable(struct p
> if (leader != event && leader->state != PERF_EVENT_STATE_ACTIVE)
> return;
>
> - ctx_resched(cpuctx, ctx);
> + task_ctx = cpuctx->task_ctx;
> + if (ctx->task)
> + WARN_ON_ONCE(task_ctx != ctx);
> +
> + ctx_resched(cpuctx, task_ctx);
Afaict, ctx_resched() path already does this in task_ctx_sched_out().
Regards,
--
Alex
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