From mboxrd@z Thu Jan 1 00:00:00 1970 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 62DF11CF80 for ; Wed, 7 Feb 2024 03:44:21 +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=1707277461; cv=none; b=p8/kDztpGY8GF/53rdRr35G8KaapV4uAJQnUJCrgP8uKHAB4caApKQ00F6G8rwtnZaqyyUIwYfn7SZIrdEqLJ+imH99GeCn9x4hERrCF1zpEFP64y3k0836HkBaUx1ugEKGVuNPZoYEXa2MS+C8JMa+QXEAQ1+ux0AmvbPHVgiA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707277461; c=relaxed/simple; bh=JRihQeRnvMv6IBslLO3YQYd+JbOoJjzD4VVOTcl40hQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Noh0DryfFOr5uoJz4+0xvrx29k90XL6ew0ohQoEfYaCDIL1Cy85PdC2wQLPeN7l/ghRRsnQqLxVG/Ob2TmAQDSmtLn2laFb1j2bq6WXOxYwkZdbWzkp7u0FiXmK3YjMi9vStyyGNVKuurmykNOmPo1rwkzxD9hmIFgPkEQxBztM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=JVqunjyh; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="JVqunjyh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DE4A7C433C7; Wed, 7 Feb 2024 03:44:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1707277460; bh=JRihQeRnvMv6IBslLO3YQYd+JbOoJjzD4VVOTcl40hQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JVqunjyhj6v9iIXA7+241LS3sT9Zrqu2nctH3nylTQFehdPLbLm1Bh9DUwe2RVHEv 3SiRF9snGljzV3h3qluoCadqVVBBJ6y9bpUWjUG8/VRuAqnng08hvVWuRPtF/vJsdC Nd/yS6E5P3GlrE1+sqsuIRu97G0px/UEftKWACDtSVYmjzoYevAeWtCeG9KS5NxgO/ cgHFPzBjQNUqa5zhVaSYSV96MqtsKFYN6J1eMy00l/XzypTsRiRygSbxE5TfFhux6y zZYLiE4mAzS2C4jD5rkLx+nm9b0rbjYjctvzYmZ5vI0oR/SMWbLEh3oMPVcNc9LY5l Mplk7d9HIqjYw== 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, yangyicong@hisilicon.com Cc: Alex Shi Subject: [PATCH v4 4/4] sched/fair: Check the SD_ASYM_PACKING flag in sched_use_asym_prio() Date: Wed, 7 Feb 2024 11:47:04 +0800 Message-ID: <20240207034704.935774-4-alexs@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240207034704.935774-1-alexs@kernel.org> References: <20240207034704.935774-1-alexs@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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: linux-kernel@vger.kernel.org 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 | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 942b6358f683..10ae28e1c088 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -9740,6 +9740,9 @@ 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; @@ -9941,11 +9944,9 @@ 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)) @@ -11041,9 +11042,7 @@ 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) { @@ -11139,8 +11138,7 @@ 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) && - sched_use_asym_prio(env->sd, env->dst_cpu) && + 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)); } -- 2.43.0