From nobody Sun Feb 8 20:34:44 2026 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3B70718A6DF; Thu, 8 Aug 2024 10:32:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723113130; cv=none; b=EJD4lweCn97J9HiXMm+pOvjqnFRSxLNqQpGG0oxLUiwltqGMyW9DrMr/lQiKfZEFzAChPBJJLB2hUv9qqp00PJd+kmPCgF3piEetKT1wPREueXx7aMYP34b/8MA7srVb8mnnWvyuyvimXAnW+BsbTnYtzSQTmR2HpeDzgWuOaV0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723113130; c=relaxed/simple; bh=Swjp+if9rc7OvYKUuqbH3py9VbNgQe1L8Z+qab8ZaIk=; h=Date:From:To:Subject:Cc:In-Reply-To:References:MIME-Version: Message-ID:Content-Type; b=KchNTysJc4T2yqROSyJorEh4DGgbJ1NZx3cTeNJlYoIjuV9WSbxL6af5axNRjUPRsJCT2FG1IZMxVpEZj/9pJnh63+vL4eLziHeUssVzPZC1pTqrR8v3qMs8CtQT6gE1FylVGT9xBKeXAFRpYCUVwydHsrNZbGPSRzjqSGVa670= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=quLuuIdY; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=BpRluLvu; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="quLuuIdY"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="BpRluLvu" Date: Thu, 08 Aug 2024 10:32:07 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1723113127; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=j8+oKd8SATM6/vpr+Spgqm8dqy50N3DheoV6+wTfQXI=; b=quLuuIdYZzmMhJvNHpJ5sMdGd06JYQ72rOeJ2Ad392oZtzDIJyrAKLzZkL+lhzGcCAyW9M azG3B+Fwkur32Ss+Y8PDp1hanPDwwmm8336odytRMi+KcKCDUBUejXIpSzpEB7mfTRy+xN cXvhw/IJNuav5VF+y4DK8eagQ0JkEPX3CeJkUfhUEO4NFhLtYW9RXXUg/eYt390YqoUfeG LAABioUDcdObe+SRWxZYPPadsHBFoGpZygxUMYkmbci0BDuN5BUCOAK5s+5K1m/JkREs6l FMm03ZzUT738/yBHENomnYXTxsI4EYyTDCvsg2FLVlu0NpsTWDiUjz0ehGXQJQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1723113127; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=j8+oKd8SATM6/vpr+Spgqm8dqy50N3DheoV6+wTfQXI=; b=BpRluLvubnJy2L4W6Jgmx4mvnUu/GVLM7G0Uk3AQTOhmuHMCXudT1ywEpbh2uV+uulDRr9 8plzMNS5ZSN5SdCQ== From: "tip-bot2 for Peter Zijlstra" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: perf/core] perf: Optimize __pmu_ctx_sched_out() Cc: "Peter Zijlstra (Intel)" , Kan Liang , Namhyung Kim , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20240807115550.392851915@infradead.org> References: <20240807115550.392851915@infradead.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <172311312704.2215.13238492458175562145.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Precedence: bulk Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable The following commit has been merged into the perf/core branch of tip: Commit-ID: 3e15a3fe3a2a170c5be52783667706875c088f96 Gitweb: https://git.kernel.org/tip/3e15a3fe3a2a170c5be52783667706875= c088f96 Author: Peter Zijlstra AuthorDate: Wed, 07 Aug 2024 13:29:29 +02:00 Committer: Peter Zijlstra CommitterDate: Thu, 08 Aug 2024 12:27:32 +02:00 perf: Optimize __pmu_ctx_sched_out() There is is no point in doing the perf_pmu_disable() dance just to do nothing. This happens for ctx_sched_out(.type =3D EVENT_TIME) for instance. Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Kan Liang Reviewed-by: Namhyung Kim Link: https://lore.kernel.org/r/20240807115550.392851915@infradead.org --- kernel/events/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/events/core.c b/kernel/events/core.c index 197d3be..9893ba5 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -3312,7 +3312,7 @@ static void __pmu_ctx_sched_out(struct perf_event_pmu= _context *pmu_ctx, cpc->task_epc =3D NULL; } =20 - if (!event_type) + if (!(event_type & EVENT_ALL)) return; =20 perf_pmu_disable(pmu);