From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f73.google.com (mail-wr1-f73.google.com [209.85.221.73]) (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 2B5D4271464 for ; Mon, 2 Feb 2026 16:23:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.73 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770049403; cv=none; b=O+LIGsaIe4/h9/zFhBeljul4jq1W7mNBNdWZHufdEVUz3K/lvE59pKQ43xGWAPaXai1zv7+DRHCeXiJy+NxyLVBNjDlsj56ClLRtKCFQfL3eYBoavdJK2kio//51Q+2ks9kyUNu26S/T6vAkEcb6ADg+YKchW2KvkGcW5s3UQN8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770049403; c=relaxed/simple; bh=pQZoT6Y4K8pKVEJCNefkiWvGdDfj0p/SjpdkYyfs4J0=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=ctWj/DMXCIkS30OXtVPbKvMiMETal7dTMii8iE93aZqNNkWNpTxfQ1rHHyeuCRUD1zDksuo1FgXMsHXnBamXLMVCEedxBisqkFWHB+vxQ+qVR7CAlYdQq0F9BFgiLGZp6j8DZlMYVtOyQuGSxuaptV4FXNjlButvyCWqkDasIM8= 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=TDe6Ekdr; arc=none smtp.client-ip=209.85.221.73 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="TDe6Ekdr" Received: by mail-wr1-f73.google.com with SMTP id ffacd0b85a97d-430ffc4dc83so4850629f8f.3 for ; Mon, 02 Feb 2026 08:23:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1770049400; x=1770654200; 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=1Gwk8eQ5wUeRhu8FK4dC5BwQ5ED+3LlOf9MmormlXz8=; b=TDe6Ekdr4Va8Fu8o2ZOnE4RWBzCrXqQO1uhzcFk74nWzuYbSnLySJlLf9F8hscw/1p ClU0HEUi6DczbzUKQWhvwjcSmXt4rLcA+WNxh/rlW7A2g4/cYbzrnDi4hzoK8F3j5qds 5lzBjAeziHZkVY0ysi7i0BMS1mCTfOSX6vnJTGuNPXZUcdrgbWeJOrrYPyxnM4MpQ8WH blRBgBj1zvGEDc+F7Mjx9tjEs130drtMRYp/1Al+9ORRZBgMv+Q4s92kZzv3BiL9EPOc 9JNMoY3lTv6zuIQQiyay9WzmemF+Ig2zgr14gwJmQhjQC3/1nCsvL9TnEIQSrxtOscuN shCQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1770049400; x=1770654200; 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=1Gwk8eQ5wUeRhu8FK4dC5BwQ5ED+3LlOf9MmormlXz8=; b=ZhUq0yR6fWQ/CI0bEdbPFacqGl304OG5PmgH9Op+EMzvN/1I9IgUjApqpM+XIEk03Y 5ocE3Vkw+EOGOzViGP7jOfWJtvA4VOKbbJED+wIIy9Fe2Hk8/DaKjgGUuQzFoXMXR4au QQ173EYNbEZzR5P4ZhvfhK2D9uVIEF1+qen6BURkdLg2s1zER9uaM7TsDipSHJaeuRa3 kp/a26VTQU8IqIkftPySxwwOAsX3TbUg0UlHeQ68uL9m1+UVsBrvVUI6UFpe2bnNGRY8 0QN0RINau0e8xkUd9KoqORC+F6k6vXmC1CHOEEg4Gm80vFKZ0DknuD26NWQXpf/oCY3O 6fXQ== X-Forwarded-Encrypted: i=1; AJvYcCVq+erEFDKy6rVuFtZwPb5XPj5fDoy1+Kujf9v8vzJDz8zWOqGrz0zkLAem2BSArZ5Exr6IbULeRtM=@lists.linux.dev X-Gm-Message-State: AOJu0YxeVj4CZ+6FY3aGkKAfRYAcwBlJB5hKxU+0UnbiNhv4jH3gMWa1 rjQ5YlwXEpdDGcNoed/YsOfQPdOw5gUZ8xE1Dr7ZQvfWuq50ot3kFhBRNdNg/xrFeaGpxsgD3br I0DRKm1u3LLGjfg== X-Received: from wrm4.prod.google.com ([2002:a05:6000:26c4:b0:435:99e6:7da6]) (user=jpiecuch job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6000:26cc:b0:435:953e:589c with SMTP id ffacd0b85a97d-435f3aaa43bmr16885535f8f.34.1770049400431; Mon, 02 Feb 2026 08:23:20 -0800 (PST) Date: Mon, 02 Feb 2026 16:23:19 +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: <20260126084258.3798129-1-arighi@nvidia.com> <20260126084258.3798129-2-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 , Tejun Heo Cc: Kuba Piecuch , David Vernet , Changwoo Min , Christian Loehle , Daniel Hodges , , , Emil Tsalapatis Content-Type: text/plain; charset="UTF-8" On Mon Feb 2, 2026 at 3:52 PM UTC, Andrea Righi wrote: > On Sun, Feb 01, 2026 at 07:43:33AM -1000, Tejun Heo wrote: >> On Fri, Jan 30, 2026 at 11:54:00AM +0000, Kuba Piecuch wrote: >> > Is "local" short for "local or global", i.e. not user-created? >> >> Yes, maybe it'd be useful to come up with a terminology for them. e.g. >> terminal - once a task reaches a terminal DSQ, the only way that the BPF >> scheduler can affect the task is by triggering re-enqueue (although we don't >> yet support reenqueueing global DSQs). > > I like "terminal DSQ", if there's no objection I'll update the > documentation using this terminology. "Built-in" would also work and avoids introducing new terminology, but it doesn't provide any insight into why these DSQs are special, whereas "terminal" suggests there's some finality to inserting a task there. I'm slightly leaning towards "terminal". Thanks, Kuba