From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f73.google.com (mail-wm1-f73.google.com [209.85.128.73]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 23C013E8C49 for ; Wed, 4 Feb 2026 10:33:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.73 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770201237; cv=none; b=CmTaloxAZ3DJ3p0T89Wd8hcA5tfSQIMky4rSrhajiKYtr0fYDzD6Wm8R4FnezIvMGBlhrBgYHUMrt2Shnv0faG3UzmyAFZoT4Elj1CYFX1PnMR6sjCKX0XYz1B4G3ZIsP3uq+V8gXy68JvJs0tzjzZ0QvtXbR2PSJgWBm/dWOJ4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770201237; c=relaxed/simple; bh=lYIhogZNmW/tEFe2sESCytnyVuzRtPXNqNpsN3bSX0k=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=T1Ohc9c1ILoX/oPXRfeWnpaWgHAZXTFUOZsWNXOPzoT4hmg/j42yYUViGdyEZUUpqEOrZPMQJDVR6I3I6ucXCVW1Q+dcnHVZIqjcSQdgrwSrnfx7i2Wchr43Q9Sj0D5I4+nuNUz3kT3vWh/EhdAaLQk4JpzqSo4Wi2PSizccOk4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--jpiecuch.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=yAR3KS58; arc=none smtp.client-ip=209.85.128.73 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--jpiecuch.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="yAR3KS58" Received: by mail-wm1-f73.google.com with SMTP id 5b1f17b1804b1-48069a43217so76711435e9.1 for ; Wed, 04 Feb 2026 02:33:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1770201235; x=1770806035; darn=lists.linux.dev; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=VWQJDn+m3kIbt58PZ0I1Zknh/dvrXG4rZcRtcTS57x0=; b=yAR3KS58jxs1zh9LsRjfAW+ikcKI7RkUUU2vZMQbi9F2xZ+6kgyO4C3iBN5TqJBqWd dHOC2MRL2lpkh2d+SjuqsyUFsPp02nCUDcvJe9H6+qfnoGuFvM905brDGeE+LLc0tphf I0p3CUbZ2YVxF63l9GW7gJalNplpXXCdoTPik1mGZsgMcu/6rkdEbB0OBscGRTomnORB zko4fv9rO+A1jQDRxdoowENJTzL0AjYd+TLEW5+op3NsjxKeuxW21PQ6HHgD+3Wq8Qol 1XVHh2rN49a8KrwqGE+Sw+YSmcAf1WLi1Yz55iQMLVON/SfU8ZSDk4TlKMEFnKv94Row 8jvw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1770201235; x=1770806035; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=VWQJDn+m3kIbt58PZ0I1Zknh/dvrXG4rZcRtcTS57x0=; b=LSgdw6s2SLI8yjH645qqUGMKe0PnNie2UqVT0aKu3EDbqSmvafTPVT8uoQT2Q4Oxk9 EBJlJO089QjZgZC9XtjKpomM7ZmGwZwzys909KiLLJsPIs1Qf1VwuAtOM3mZnaSa1wi3 2yJs8Vv1lSQYGccUQge/zWh+cRJVXfYKuzABeaxtnkLV92UAX/g4ux/qaxJt4btKryoJ WE9imTva48W5DJsiZZYODrKof9TvmxJp9kOV+LrUzKEJX+Z10kX4yzh+XEmdntNjU5qo f7KR6KqjsRQt/FiuBDzqNXV9xkY+kkjC/cOYxJ4+/J5UeWhv3wk+x4kO4OZKZR6EfxYL 9iJw== X-Forwarded-Encrypted: i=1; AJvYcCUHzwk4v69fHGkynyCdsC8twTh3HZl5ef668+zZXGkFrl3qVXTvWaNXL/PCtjAc1Jpom5/whCtHpR4=@lists.linux.dev X-Gm-Message-State: AOJu0Yx5h4jUOFbI9BF4wNaRoLrw+jqAKu2S61isvDcUws21hOVIRlKq hJROd4mw9MPxSviWFr0opPiL8srOKECFpAFqVxHBP6OvVF9uYgYZgu3wfXvVf0IhQryaGD2JhHj 9Pn2CqpTFAxFKDw== X-Received: from wmk23.prod.google.com ([2002:a05:600c:297:b0:480:3842:3532]) (user=jpiecuch job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:8b70:b0:47a:8cce:2940 with SMTP id 5b1f17b1804b1-4830e9313bamr31576025e9.14.1770201235530; Wed, 04 Feb 2026 02:33:55 -0800 (PST) Date: Wed, 04 Feb 2026 10:33:54 +0000 In-Reply-To: Precedence: bulk X-Mailing-List: sched-ext@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260201091318.178710-1-arighi@nvidia.com> <20260201091318.178710-2-arighi@nvidia.com> X-Mailer: aerc 0.21.0-0-g5549850facc2 Message-ID: Subject: Re: [PATCH 1/2] sched_ext: Fix ops.dequeue() semantics From: Kuba Piecuch To: Andrea Righi , Kuba Piecuch Cc: Tejun Heo , David Vernet , Changwoo Min , Emil Tsalapatis , Christian Loehle , Daniel Hodges , , Content-Type: text/plain; charset="UTF-8" On Wed Feb 4, 2026 at 10:11 AM UTC, Andrea Righi wrote: > On Mon, Feb 02, 2026 at 11:56:43AM +0000, Kuba Piecuch wrote: >> Hi Andrea, >> >> Looks good overall, but we need to settle on the global DSQ semantics, plus >> some edge cases that need clearing up. > > On this one I think we settled on the assumption that SCX_DSQ_GLOBAL can be > considered a "terminal DSQ", so we won't trigger ops.dequeue(). Correct, I made this comment before we settled it. Thanks, Kuba