From nobody Sun Dec 14 14:17:52 2025 Received: from fanzine2.igalia.com (fanzine.igalia.com [178.60.130.6]) (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 80DA922BABD for ; Thu, 16 Jan 2025 15:16:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=178.60.130.6 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737040599; cv=none; b=MSfLOO44DD99ubLahk5155SEaVcGPp9LH+P2J1mG7/fsNObbu5Nwl11iEYwyfon5TM6szF/nUcZYabMd4iIqgPMGYhCnoRSxqh5/m+UT9SiUkBvAZBxc3gtX0qHPa0iHypTj+lPC1Mi68b7PDZJIv6JE3GWwrexthcAijsDKFHI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737040599; c=relaxed/simple; bh=mDexqtP1CKhLYJqyg8KAmBjz5BTcln3nJtCMXtwB62c=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=YuRKwiziXz6XcEURoE+A5sjktO2rqDfe1Vjy8CvxhyArKLY1Rt8qecsSSHDLzmVSC6FfJKkp+tL60p1OytdAvOWJO4nXo1tkkAwCN8iLIPzO23Rt48qSqG2boLf1Vn7rDXZnymqSBlRqTTILTXAsxxt/XT2Dkxds4N3ZukOY2lg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=igalia.com; spf=pass smtp.mailfrom=igalia.com; dkim=pass (2048-bit key) header.d=igalia.com header.i=@igalia.com header.b=D/Uyvxn+; arc=none smtp.client-ip=178.60.130.6 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=igalia.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=igalia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=igalia.com header.i=@igalia.com header.b="D/Uyvxn+" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=T1oVSiH38u9Fe7c5Be2JoYpziGzuwnS/eW1jCX6B2H8=; b=D/Uyvxn+PHQjZcNNtnTynAztHj qo0Lf4uWBhRcSRo3Mth+0WiviA9jL4faDeSYYLiFzY+REMb2wa9qZmac0qpjZi7lRKmm2blQVtHtp Zqi//FrCZALrwXApd1z45/x03bCwJjiqEFAzBqd1vzSlalntZcgU404z/G4HVZEPundvhIkbhry86 kYgCKqU4SWjeTyJj6xrF0GngDy6vv7W+l74FgTAinRqVZIuh7YzvMWeTKuc0IsVLHLMg93ggpzR0e 0uI0tIbTftmhJWRJdZOELu4WeFnKgfNnwUjE4sA3tLAR8MuXiW8M8R9mpSbkZltmqsLIqLI3le/4r R1kMpGpw==; Received: from [58.29.143.236] (helo=localhost) by fanzine2.igalia.com with utf8esmtpsa (Cipher TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim) id 1tYRbh-00Gi1a-5b; Thu, 16 Jan 2025 16:16:29 +0100 From: Changwoo Min To: tj@kernel.org, void@manifault.com, arighi@nvidia.com Cc: kernel-dev@igalia.com, linux-kernel@vger.kernel.org, Changwoo Min Subject: [PATCH 4/7] sched_ext: Add an event, SCX_EVENT_ENQ_LOCAL_EXITING Date: Fri, 17 Jan 2025 00:15:40 +0900 Message-ID: <20250116151543.80163-5-changwoo@igalia.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250116151543.80163-1-changwoo@igalia.com> References: <20250116151543.80163-1-changwoo@igalia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add a core event, SCX_EVENT_ENQ_LOCAL_EXITING, which represents how many times a task is enqueued to a local DSQ when exiting if SCX_OPS_ENQ_EXITING is not set. Signed-off-by: Changwoo Min --- kernel/sched/ext.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c index 909f12a41934..094e19f5fb78 100644 --- a/kernel/sched/ext.c +++ b/kernel/sched/ext.c @@ -1479,6 +1479,12 @@ struct scx_event_stat { * continued to run because there were no other tasks on the CPU. */ u64 CNTD_RUN_WO_ENQ; + + /* + * If SCX_OPS_ENQ_EXITING is not set, the number of times that a task + * is dispatched to a local DSQ when exiting. + */ + u64 ENQ_LOCAL_EXITING; }; =20 #define SCX_EVENT_IDX(e) (offsetof(struct scx_event_stat, e)/sizeof(u64)) @@ -1493,6 +1499,7 @@ enum scx_event_kind { SCX_EVENT_DEFINE(INVAL_SELECT_CPU), SCX_EVENT_DEFINE(OFFLINE_LOCAL_DSQ), SCX_EVENT_DEFINE(CNTD_RUN_WO_ENQ), + SCX_EVENT_DEFINE(ENQ_LOCAL_EXITING), SCX_EVENT_END =3D SCX_EVENT_END_IDX(), }; =20 @@ -1500,6 +1507,7 @@ static const char *scx_event_stat_str[] =3D { [SCX_EVENT_INVAL_SELECT_CPU] =3D "invalid_select_cpu", [SCX_EVENT_OFFLINE_LOCAL_DSQ] =3D "offline_local_dsq", [SCX_EVENT_CNTD_RUN_WO_ENQ] =3D "cntd_run_wo_enq", + [SCX_EVENT_ENQ_LOCAL_EXITING] =3D "enq_local_exiting", }; =20 /* @@ -2087,8 +2095,10 @@ static void do_enqueue_task(struct rq *rq, struct ta= sk_struct *p, u64 enq_flags, =20 /* see %SCX_OPS_ENQ_EXITING */ if (!static_branch_unlikely(&scx_ops_enq_exiting) && - unlikely(p->flags & PF_EXITING)) + unlikely(p->flags & PF_EXITING)) { + scx_add_event(ENQ_LOCAL_EXITING, 1); goto local; + } =20 if (!SCX_HAS_OP(enqueue)) goto global; --=20 2.48.1