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 E4B2339E162 for ; Thu, 5 Mar 2026 12:27:17 +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=1772713638; cv=none; b=h8ivutYdoChJU36//7LZ6VaXX9nyNocN0PD9mR1doMsd9CJYAbALJnYJpoYF5q+8MsgqicfWu97NcwJeyH9DFPjHS1nrsTYRK6a1aOBO98C7KYvGqfU/KRBVhxjmQLTkVZMHLql+vdPYp2t7IAPptDy0K2CagQd5Zc9mufJUAaM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772713638; c=relaxed/simple; bh=L3n7iFHFY8oLp/GK7m5k6TlWEUrm9ZXNmYfsDUK0Xb4=; h=Mime-Version:Content-Type:Date:Message-Id:To:From:Subject:Cc: References:In-Reply-To; b=hARTjiPzKRXulk4RhNVxtXg8wsVlOM4/hRg5G96H/rGX4xE8aMVK6wXPwNgf5JHLM9zW8c+I5FQLgJFTImWh+262aiULmBXs2lnjMMV1x10Pa5bIA2SFSHcOkhUgFNNlWeDzmdajwBirM+gP/6VuX91d9F7sJyCcv0ud9NwL/5I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=biNLFNkj; 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="biNLFNkj" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3CB1AC116C6; Thu, 5 Mar 2026 12:27:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772713637; bh=L3n7iFHFY8oLp/GK7m5k6TlWEUrm9ZXNmYfsDUK0Xb4=; h=Date:To:From:Subject:Cc:References:In-Reply-To:From; b=biNLFNkjCxen5EPhP8NEiGrfwvJEhL2ub4HOBo6/GdolykJz0c8Ju74GUouQ/1IKD mNKDgttN1RRPt0cIaJdx+FNh6ROFfEg9OxTxRNcwfKdVKtgUDIHguXdIsPBucimsge kYPZQjTCL5G3+2IU1KNSCah8ZMjt/kdLgqPXSMVVkx2i2Ej8l90b2cW9gnejM1a8jp vwB2kIt23yggOuxhwnWCVf+koKylZVTSgf+ifrEFVKq9OyDp0Xcckdtl8uJkpcIZJj /k9wt68yXzNggWi7WsLIIPMm2dZbFFGamKM6AbDRjuZY7mExFtrQVQ4/fyoFD+5kfl 6jPa9hPlL4IoA== Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Thu, 05 Mar 2026 13:27:12 +0100 Message-Id: To: "Matthew Brost" From: "Danilo Krummrich" Subject: Re: drm_sched run_job and scheduling latency Cc: , "Boris Brezillon" , "Chia-I Wu" , "ML dri-devel" , , "Steven Price" , "Liviu Dudau" , "Maarten Lankhorst" , "Maxime Ripard" , "Thomas Zimmermann" , "David Airlie" , "Simona Vetter" , =?utf-8?q?Christian_K=C3=B6nig?= , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , "Rodrigo Vivi" , "open list" , References: <20260305092711.20069ca1@fedora> In-Reply-To: On Thu Mar 5, 2026 at 10:10 AM CET, Matthew Brost wrote: > On Thu, Mar 05, 2026 at 09:38:16AM +0100, Philipp Stanner wrote: >> In the past discussions Danilo and I made it clear that more major >> features in _new_ patch series aimed at getting merged into drm/sched >> must be preceded by cleanup work to address some of the scheduler's >> major problems. > > Ah, we've moved to dictatorship quickly. Noted. While Philipp and me generally share concerns about the scheduler in genera= l, I prefer to speak for myself here, as my position is a bit more nuanced than = that. I shared my view on this in detail in [1], so I will keep it very brief her= e. >From a maintainance perspective the concern is less about whether a particu= lar change is correct or small in isolation, but about whether it moves the ove= rall design in a direction that makes the existing issues harder to resolve subsequently. I.e. I think we should try to avoid accumulating new features or special pa= ths on top of known design issues. (Please also note that those are general considerations; they are not meant= to make any implications on this specific topic. Not least because I did not g= et to read through the whole thread yet.) Thanks, Danilo [1] https://lore.kernel.org/all/DFPK5HIP7G9C.2LJ6AOH2UPLEO@kernel.org/