From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-171.mta0.migadu.com (out-171.mta0.migadu.com [91.218.175.171]) (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 1612430F95F for ; Fri, 8 May 2026 11:51:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.171 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778241069; cv=none; b=LoDHAXUi7qz1sgm+OeP4KzkFiDOxZ1XmnsINBkIPhtP5JIUVDchVw5VfJ2G9/DwZJUNSXZdQw8ZkwPG2ZnAK5q2ZxlDCxB0R6w/TNzLOgMqILv7As4EhxWPIPo7Y2W7iSQrnSKyIm4I4KYZIYU/i4UqcXfUibXqVlqrVfYHLJ8I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778241069; c=relaxed/simple; bh=Kg9VgwKqysDugUNyQ1F4e6hdDnnJTPjgeXYgAFGSdTI=; h=From:To:Cc:Subject:Date:Message-Id; b=KDD0aqSlY0qElZPrfJPhtGWCOEtDQu/IVKFI/aaX4kkCUSH/KDpv+uTox1E7jd3u9UUmW4mnz6fpg7blmX6o8ZUmQqc+6PZJGfGawhrVIKWteLoeNQ1Frd/uKZ/Ie6//hHnoUhOyLAQw5eQjsZxDXt2wqiYTJDpq+KCInCjc0JI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=xxjY/DUc; arc=none smtp.client-ip=91.218.175.171 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="xxjY/DUc" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1778241056; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc; bh=AAs1k05Z+eYo43LjlYet0grTAvlw+pleDZML7XVrxI8=; b=xxjY/DUc7yowaJldZfTHdFeX9vnN/81p5Vq5jEOTkv6JdOB8urDAdpJdll7mwBdIXU+72P rt8qssuKzq/wxRBz+YZ5TlWGW5CQyZpPyZe6vNAw41n0MqJzhHrylsmN3ghOmq5lnBr/VU juHL/8qMSyHnG4PAudH+/vdxggYQk6I= From: Zqiang To: tj@kernel.org, void@manifault.com, arighi@nvidia.com, changwoo@igalia.com, yphbchou0911@gmail.com Cc: sched-ext@lists.linux.dev, linux-kernel@vger.kernel.org, qiang.zhang@linux.dev Subject: [PATCH] sched_ext: Use IRQ_WORK_INIT_HARD() to initialize sch->disable_irq_work Date: Fri, 8 May 2026 19:50:45 +0800 Message-Id: <20260508115045.23739-1-qiang.zhang@linux.dev> X-Migadu-Flow: FLOW_OUT Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: For built with PREEMPT_RT kernels, the scx_disable_irq_workfn() is called from per-cpu irq_work kthreads context, this means that when call the scx_dump_state() in the scx_disable_irq_workfn() to output current->comm/pid, it always output current irq_work kthread's comm/pid. this commit therefore use the IRQ_WORK_INIT_HARD() to initialize sch->disable_irq_work to make scx_disable_irq_workfn() is called from hardirq context. Signed-off-by: Zqiang --- kernel/sched/ext.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c index d5be34e7b8ae..ef4e8e6addd1 100644 --- a/kernel/sched/ext.c +++ b/kernel/sched/ext.c @@ -6770,7 +6770,7 @@ static struct scx_sched *scx_alloc_and_add_sched(struct scx_enable_cmd *cmd, sch->slice_dfl = SCX_SLICE_DFL; atomic_set(&sch->exit_kind, SCX_EXIT_NONE); - init_irq_work(&sch->disable_irq_work, scx_disable_irq_workfn); + sch->disable_irq_work = IRQ_WORK_INIT_HARD(scx_disable_irq_workfn); kthread_init_work(&sch->disable_work, scx_disable_workfn); timer_setup(&sch->bypass_lb_timer, scx_bypass_lb_timerfn, 0); -- 2.17.1