From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f74.google.com (mail-wm1-f74.google.com [209.85.128.74]) (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 2F0093E8C4D for ; Wed, 4 Feb 2026 10:33:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770201237; cv=none; b=Ny8jyVshfvm/hcgDzRxfpIgL+V6R8bE6LGLfZtozN6seQCVaUFDZtFWcrWubqcDVivlW8fsW2qHvHxLwL38vIVXDuiA0UdDmp7ne1RZXJ+TaWNcRudFi32gaq1DnlGms+ZAnHztk+tB1mQMb9+94bHGCDY3m+0zSqO/GiJ47zAw= 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=WBTaTVpT; arc=none smtp.client-ip=209.85.128.74 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="WBTaTVpT" Received: by mail-wm1-f74.google.com with SMTP id 5b1f17b1804b1-4806fa4a180so57562195e9.2 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=vger.kernel.org; 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=WBTaTVpTEVa0U6YUXF+3HudwJb6mcbBnOkPbw1kDnX6uErQEqOb+IfMdKYVgu2jGI/ 1aWpng/dZrPpswkoAnZEhKz2YVdu9QrCXFVRJu80Xsrfgl/lAZYEfwp+TX+VnAbX/urQ RaNzI6thOdu/xshQe7oNOrOPvv6IiZgvHXxf7I0QNmsjGVeEpe3qJ74UleyWaxNCTreF uAKSUtX0paiaV70TBWVfTduqA+ISp3dYzWpyk8EjhUGN49gXLw57y2UkebNh7sx0soDv JXwA5pXQXHJtgEwg1rtpkPupKpsXFNHkPT0up3jenvD8FWK3Dk7Y07jYawJfgshqFDOF GHXw== 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=VgGcw3MbPWSCPhO8VrqEb74FzvCJZpFpUsF3oNpUmXhNHbfCPLSHVrFTQvojwftTUC UXDZ0rCP/QW2ZYo5MaZMeHgWomwYOgNRq/DmpjoVxLf36gB5RBE4Hb+krZSsYTZmmKzY Ldd2Cua12EXTEqhjlsfxnLdhVL8ICmn5zmgQWzO8q3ZL+AZauc7OaLNhtdvkVv5esEkO 3C2M0g4rAMJwcRVhTEGcDHsB0oOjx2nnxabbQL79deYRg1xDrNuZpAlP4ULWJT5zr2rW HPTaZ5ZeuGCe6tVeoU6FJ5mhFjEcbV06BPhLDF8hGVHiD1oTl3PZz5hSrE3KMT8Hf9Zl 5gaQ== X-Forwarded-Encrypted: i=1; AJvYcCXRtusAfp/80NwVDfynyw1IjxRzT3reG1LHllhlmMyJ3KVhMSwlpzm8qRWMgnOl/RG6oUSKjFCIe1aeW50=@vger.kernel.org X-Gm-Message-State: AOJu0YwA3fFuBuSZz5TWB4KFSCTEucm5kXHPxxMX8ZqnTYkaJR1suza5 7hj1SQ0PvaN4TPlJzV8uA8e62cdV8ZLRsJEgz9rFbKyZ6kM77YOdcpijE8NpllxwIKpffeJXvn3 K0UPFT/o4d/A9+w== 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: linux-kernel@vger.kernel.org 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