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[2604:1380:45d1:ec00::1]) by mx.google.com with ESMTPS id h17-20020ac85e11000000b0042a5254274fsi14185550qtx.427.2024.02.01.03.52.52 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 01 Feb 2024 03:52:52 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-48039-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) client-ip=2604:1380:45d1:ec00::1; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b="PvtSU/P5"; arc=pass (i=1 dkim=pass dkdomain=kernel.org); spf=pass (google.com: domain of linux-kernel+bounces-48039-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-48039-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ny.mirrors.kernel.org (Postfix) with ESMTPS id 9E22C1C2645E for ; Thu, 1 Feb 2024 11:52:52 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 6EC4C15D5BB; Thu, 1 Feb 2024 11:52:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="PvtSU/P5" Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 B6D3115DBB6 for ; Thu, 1 Feb 2024 11:52:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706788327; cv=none; b=A1Ap8deo2sleAz4j78ZOUDKibXDTwUP1SzSoVN1sntJaHKa1uHr0cu3GdqdeRxChFVXWZ31X9ti5acHC0s+z7Jc+TPAfTcRUkIYPBoTJnYCBHZvK6S74Oc4st63XTpXxxCO3p8wPgQBsZRczE7dVsYLhgcGxQBlLfyY1ESCdQ9Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706788327; c=relaxed/simple; bh=ka9LtoyCvE401Vfn0WS2/PpohTLrZ5ojjcAJZr5Z/Sc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=gMCN5BtTsOw7vtUulWSQu4diEuULRM1/K36gTzFDq7wu4Y0iMJ+H8c8oVyEdQ6yeRyiPYZSHSgBFuItwe0V4qqOhWTydBStHVawV5c1M9p/vdMgrFg9bPcTFOzKW+BBK98VpCuouvLX/3Wwgz1pZ+XXCPeYtVrPejrSvEoRyqAo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=PvtSU/P5; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 25B6AC433F1; Thu, 1 Feb 2024 11:52:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706788327; bh=ka9LtoyCvE401Vfn0WS2/PpohTLrZ5ojjcAJZr5Z/Sc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PvtSU/P5U1/N9frNC/ZxKjQ/19PoMB2HY3//vZU0Ut17zcqCLAOySDBQpJN8+KZks EpMFwaZ2kDkpbOPSVUxlwx6KuN9PO1Qlec+yyze3/5IIg9dWZd1Htw4Lead5h2gdIU +AirSq8I77DAeBvtJ4JNRPRxUopnRZwD3AiaPjgYPe1yUQ17uyQuY5jmAlhUPF5sB6 oq/MqXbHD2GT5viM2ftMQklatuKUTasGd31RDzJwBMyJSVRlKVdEXu7/iWhp+oUqqN wfjqCMo+W2qtWFcNcxxP9ViD/WZESlzgJLO0n2J5Huq3euqmNXWm+UcASryK6z/PUP Sfvw2XyAbSgKA== From: alexs@kernel.org To: Ingo Molnar , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Daniel Bristot de Oliveira , Valentin Schneider , linux-kernel@vger.kernel.org, ricardo.neri-calderon@linux.intel.com, sshegde@linux.ibm.com Cc: Alex Shi Subject: [PATCH v3 4/4] sched/fair: Check the SD_ASYM_PACKING flag in sched_use_asym_prio() Date: Thu, 1 Feb 2024 19:54:47 +0800 Message-ID: <20240201115447.522627-4-alexs@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240201115447.522627-1-alexs@kernel.org> References: <20240201115447.522627-1-alexs@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1789697324789363806 X-GMAIL-MSGID: 1789697324789363806 From: Alex Shi sched_use_asym_prio() checks whether CPU priorities should be used. It makes sense to check for the SD_ASYM_PACKING() inside the function. Since both sched_asym() and sched_group_asym() use sched_use_asym_prio(), remove the now superfluous checks for the flag in various places" Signed-off-by: Alex Shi To: Ricardo Neri To: Ben Segall To: Steven Rostedt To: Dietmar Eggemann To: Valentin Schneider To: Daniel Bristot de Oliveira To: Vincent Guittot To: Juri Lelli To: Peter Zijlstra To: Ingo Molnar --- kernel/sched/fair.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 44fd5e2ca642..bd32efbea688 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -9741,6 +9741,9 @@ group_type group_classify(unsigned int imbalance_pct, */ static bool sched_use_asym_prio(struct sched_domain *sd, int cpu) { + if (!(sd->flags & SD_ASYM_PACKING)) + return false; + if (!sched_smt_active()) return true; @@ -9940,11 +9943,9 @@ static inline void update_sg_lb_stats(struct lb_env *env, sgs->group_weight = group->group_weight; /* Check if dst CPU is idle and preferred to this group */ - if (!local_group && env->sd->flags & SD_ASYM_PACKING && - env->idle != CPU_NOT_IDLE && sgs->sum_h_nr_running && - sched_group_asym(env, sgs, group)) { + if (!local_group && env->idle != CPU_NOT_IDLE && sgs->sum_h_nr_running && + sched_group_asym(env, sgs, group)) sgs->group_asym_packing = 1; - } /* Check for loaded SMT group to be balanced to dst CPU */ if (!local_group && smt_balance(env, sgs, group)) @@ -11040,9 +11041,7 @@ static struct rq *find_busiest_queue(struct lb_env *env, * If balancing between cores, let lower priority CPUs help * SMT cores with more than one busy sibling. */ - if ((env->sd->flags & SD_ASYM_PACKING) && - sched_asym(env->sd, i, env->dst_cpu) && - nr_running == 1) + if (sched_asym(env->sd, i, env->dst_cpu) && nr_running == 1) continue; switch (env->migration_type) { @@ -11138,7 +11137,7 @@ asym_active_balance(struct lb_env *env) * the lower priority @env::dst_cpu help it. Do not follow * CPU priority. */ - return env->idle != CPU_NOT_IDLE && (env->sd->flags & SD_ASYM_PACKING) && + return env->idle != CPU_NOT_IDLE && sched_use_asym_prio(env->sd, env->dst_cpu) && (sched_asym_prefer(env->dst_cpu, env->src_cpu) || !sched_use_asym_prio(env->sd, env->src_cpu));