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 68A9D3EB7E2; Wed, 4 Mar 2026 22:01:52 +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=1772661712; cv=none; b=ZgN791xHbGb5xZSgx+5FpJxcOG2t2Ic2Ya7lq4vqBkZhfGp19joGJkgEPRhb2xqwXtQRHviMOfjwH3Ya6b645AsJdHKYRbTihdRzAnBfu5DkZgcyysvjbcl+v6J8eC7RnMEgN52tmdJhGJsi9A35TDChuBPUv72vq5UWCc5Wic4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772661712; c=relaxed/simple; bh=Kfe1bZO69EFJrY0RCeBxLulY5qTAxa55o9g0u4Jw5uw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=oLcPGGQMpnHFn8hOHPnT5JFCr6c7VgTTMhsUNcFC8FG6ye1U6eDrbp4sb/SmHfbzJANS2rrQHQrYIAkyCtSJ17+XHZcOjtgWdlhiBFqoY4BOv3vrojW9i/Ux0Y7O1H64tF5X1CwXxwCgVhR+nXSeg1aDVe8nM/Imv+102c4DyUw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=W2MLOFIq; 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="W2MLOFIq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0D362C4CEF7; Wed, 4 Mar 2026 22:01:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772661712; bh=Kfe1bZO69EFJrY0RCeBxLulY5qTAxa55o9g0u4Jw5uw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=W2MLOFIqOmW87WXV/VGDV3ZjBq1l2uu+6OyMKRTiK/JmvTB1cpUDv2q0lEixAbEDn 2Re3aSCOb9oI/PEJYzaWYQBOaGmdDaYQtsQAWgHwGDnjdkXByNFHhn7X2dEPQurKea uuSL2P4BpC7EXtW+PogG+rINCWsuTGNX0eqrjQW5K42OAHLVYjs4R5k4FgP9B/2tta 2kK1CjhBd4Qu6LtHo+KEvvgk5V0hkrl8alnUvVQvWnRe7d/tIe9C5O0bfKJb/9jbv+ tiWkyrb8ZiXeC9m4AwkmxzJwXtzijTd6YC4OI+3tlV1OozUMnY6N6CGrSnE2jLsqDp Y8sas1Tf091Vw== From: Tejun Heo To: linux-kernel@vger.kernel.org, sched-ext@lists.linux.dev Cc: void@manifault.com, arighi@nvidia.com, changwoo@igalia.com, emil@etsalapatis.com, Tejun Heo Subject: [PATCH 30/34] sched_ext: Add scx_sched back pointer to scx_sched_pcpu Date: Wed, 4 Mar 2026 12:01:15 -1000 Message-ID: <20260304220119.4095551-31-tj@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260304220119.4095551-1-tj@kernel.org> References: <20260304220119.4095551-1-tj@kernel.org> Precedence: bulk X-Mailing-List: sched-ext@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add a back pointer from scx_sched_pcpu to scx_sched. This will be used by the next patch to make scx_bpf_reenqueue_local() sub-sched aware. Signed-off-by: Tejun Heo --- kernel/sched/ext.c | 3 +++ kernel/sched/ext_internal.h | 3 +++ 2 files changed, 6 insertions(+) diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c index dac94364f187..c7651f40ff86 100644 --- a/kernel/sched/ext.c +++ b/kernel/sched/ext.c @@ -5655,6 +5655,9 @@ static struct scx_sched *scx_alloc_and_add_sched(struct sched_ext_ops *ops, for_each_possible_cpu(cpu) init_dsq(bypass_dsq(sch, cpu), SCX_DSQ_BYPASS, sch); + for_each_possible_cpu(cpu) + per_cpu_ptr(sch->pcpu, cpu)->sch = sch; + sch->helper = kthread_run_worker(0, "sched_ext_helper"); if (IS_ERR(sch->helper)) { ret = PTR_ERR(sch->helper); diff --git a/kernel/sched/ext_internal.h b/kernel/sched/ext_internal.h index 524bd7afbfe6..9029fa4695c0 100644 --- a/kernel/sched/ext_internal.h +++ b/kernel/sched/ext_internal.h @@ -933,6 +933,8 @@ struct scx_event_stats { s64 SCX_EV_SUB_BYPASS_DISPATCH; }; +struct scx_sched; + enum scx_sched_pcpu_flags { SCX_SCHED_PCPU_BYPASSING = 1LLU << 0, }; @@ -953,6 +955,7 @@ struct scx_dsp_ctx { }; struct scx_sched_pcpu { + struct scx_sched *sch; u64 flags; /* protected by rq lock */ /* -- 2.53.0