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Date: Wed, 11 Dec 2013 15:10:52 +0800 From: "Yan, Zheng" <zheng.z.yan@...el.com> To: linux-kernel@...r.kernel.org Cc: a.p.zijlstra@...llo.nl, eranian@...gle.com, andi@...stfloor.org, "Yan, Zheng" <zheng.z.yan@...el.com> Subject: [PATCH 07/15] perf, core: Always swtich pmu specific data during context switch From: "Yan, Zheng" <zheng.z.yan@...el.com> Swtich pmu specific data even if switching perf task conext is optimized out. Signed-off-by: Yan, Zheng <zheng.z.yan@...el.com> --- kernel/events/core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/events/core.c b/kernel/events/core.c index 6499dae..974f7c7 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -2318,6 +2318,8 @@ static void perf_event_context_sched_out(struct task_struct *task, int ctxn, next->perf_event_ctxp[ctxn] = ctx; ctx->task = next; next_ctx->task = task; + ctx->task_ctx_data = xchg(&next_ctx->task_ctx_data, + ctx->task_ctx_data); do_switch = 0; perf_event_sync_stat(ctx, next_ctx); -- 1.8.1.4 -- 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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