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 84D4822CF2C for ; Thu, 16 Jan 2025 15:16:56 +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=1737040618; cv=none; b=OaD77hGwYSWD/Kg//WOSbNtWcR34AWi3wbOi/GlrgZlLXPU3/49JWopfjIo0X4U5BcQCAuir4o+7EeAsmYoo+Lr30FrxPPL/Ama+pKP9fbMZvitt5wUmCuBNWvnhl7GFxMACvhr2hZD13b/LkWFhh8YDhqXp1js8A90zQo54XA8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737040618; c=relaxed/simple; bh=9DB3diL3NLGgxsvju8kf8kGOZdedt7cC8BWV3AIhomo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=HPxUKDYbajeVeYy8BKtU174YWYy0GA6WY18V3d0x4GzDNaejq2THuaUwxfu88A9KtSdkgorEEsvfCwpKbOMuzPP4a8gGQs+4EVohTeXeAnlAv9I9j/ruvrueH9QX9sxlUy1Pm2QjSsJ4ISoA/AIlGwx+jzOsXkc9QJEGLCiZc5M= 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=C7jLBegS; 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="C7jLBegS" 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=z+dpnv2R6Y4NoZ/yt3UIXcFPVsKT+m86eGIAEdOPkVQ=; b=C7jLBegS3vVz87GhnUn1ogLEC4 NLGQcvnvFB34pI1N1/5MpZJNcYCzMNjAHGjj6O8UeedKTmOnqxO879FDh8Jol3of14oRDoMoPS4wV 5qgWT1JGOCWo9rXXJgtAqPePm5CXk10vg0BfXP29FE0YilmHUj5R/rl4PBbXfAA07NfwycmsizjmY HWpbUqkPH1gX2exNMIKw6GwmyKXbkvCtNfidGPT7eYHG4AzA1x2RBmY8GyJImdkDL/BZGlyBvvARt Sn4twfy1Y0WNA8CUVc6CyMEtXX8BSaQ1CIfUDlT01j/zy0Ln0bX0vNeUTthB1KopMJvwcQbrm2Wfp 6ImycQ9w==; 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 1tYRc1-00Gi2O-LC; Thu, 16 Jan 2025 16:16:50 +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 7/7] sched_ext: Print core event count in scx_central scheduler Date: Fri, 17 Jan 2025 00:15:43 +0900 Message-ID: <20250116151543.80163-8-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" Modify the scx_central scheduler to print the core event counter every second. Signed-off-by: Changwoo Min --- tools/sched_ext/scx_central.bpf.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/tools/sched_ext/scx_central.bpf.c b/tools/sched_ext/scx_centra= l.bpf.c index 50bc1737c167..1f0dc9861418 100644 --- a/tools/sched_ext/scx_central.bpf.c +++ b/tools/sched_ext/scx_central.bpf.c @@ -256,6 +256,8 @@ static int central_timerfn(void *map, int *key, struct = bpf_timer *timer) u64 now =3D scx_bpf_now(); u64 nr_to_kick =3D nr_queued; s32 i, curr_cpu; + struct scx_event_stat event; + int kind; =20 curr_cpu =3D bpf_get_smp_processor_id(); if (timer_pinned && (curr_cpu !=3D central_cpu)) { @@ -291,6 +293,22 @@ static int central_timerfn(void *map, int *key, struct= bpf_timer *timer) =20 bpf_timer_start(timer, TIMER_INTERVAL_NS, BPF_F_TIMER_CPU_PIN); __sync_fetch_and_add(&nr_timers, 1); + + /* print event counters every second */ + if (nr_timers % 1000 =3D=3D 0) { + scx_bpf_event_stat(&event, sizeof(event)); + + bpf_printk("%20s: %llu\n", "invalid_select_cpu", + scx_read_event(&event, INVAL_SELECT_CPU)); + bpf_printk("%20s: %llu\n", "offline_local_dsq", + scx_read_event(&event, OFFLINE_LOCAL_DSQ)); + bpf_printk("%20s: %llu\n", "cntd_run_wo_enq", + scx_read_event(&event, CNTD_RUN_WO_ENQ)); + bpf_printk("%20s: %llu\n", "enq_local_exiting", + scx_read_event(&event, ENQ_LOCAL_EXITING)); + bpf_printk("%20s: %llu\n", "rq_bypassing_ops", + scx_read_event(&event, RQ_BYPASSING_OPS)); + } return 0; } =20 --=20 2.48.1