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 3F9C618027; Wed, 28 Jan 2026 14:19:34 +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=1769609974; cv=none; b=YPufa+tjOBolhVfa5suJa5bFfTslhvFhmEKM5gWhwHkHMA5H1y2mzNjsap9jh/TEAC8ex8Hw33gTvEFSQjRvjgG8JTsNgvU7Uyi22sLkbl9X2lAtDqJ978TkmHqpagNvLY8oG3F00q9rRvXka8+L0t1s5r6PpTXa0R6rCB3a5qU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769609974; c=relaxed/simple; bh=puOqCe2WUieCczjraaPMAlsv+0nDcLD9SLGlgfsBrqw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=mvx+pvTkByX+8FDh8cJITQJ7u2PPZwyc6Zgmm07e3APhZ/hQZ5JEFcrpAQpz4BgImelgDG99KGE0VO6jlRhW65zUb4dHD07wrRVCwCxMh0VvxkyfZ2tqDkFgm3gPCEK6/z10vjsebb3ARrbG/hTDhUapO/gaLyfzTcx9EKEn8ok= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Yl3JFNBi; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Yl3JFNBi" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 633D9C2BC86; Wed, 28 Jan 2026 14:19:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1769609973; bh=puOqCe2WUieCczjraaPMAlsv+0nDcLD9SLGlgfsBrqw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Yl3JFNBiL3Ev7//2JGqs1r/TSa5y/0mgW/ehu/EGAyy1D1mtADF3y5ZKJEUddqHT4 MW6VjDN+VX7/MIJLYHudz57Ny+5ObrRHiUqGG8Yph099IXqQJA/6XFW/WxQNSC1W2H a8L3tMvRLkroIMRGop3p86iXGh0w6Z/mkzDHQ7/Q= Date: Wed, 28 Jan 2026 15:18:58 +0100 From: Greg KH To: Christian Loehle Cc: stable@vger.kernel.org, tj@kernel.org, arighi@nvidia.com, void@manifault.com, sched-ext@lists.linux.dev Subject: Re: [PATCH 1/2] sched_ext: Don't kick CPUs running higher classes Message-ID: <2026012842-bubbling-busily-65bd@gregkh> References: <20260124092043.349976-1-christian.loehle@arm.com> <20260124092043.349976-2-christian.loehle@arm.com> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260124092043.349976-2-christian.loehle@arm.com> On Sat, Jan 24, 2026 at 09:20:42AM +0000, Christian Loehle wrote: > From: Tejun Heo > > commit a9c1fbbd6dadbaa38c157a07d5d11005460b86b9 upstream. > > When a sched_ext scheduler tries to kick a CPU, the CPU may be running a > higher class task. sched_ext has no control over such CPUs. A sched_ext > scheduler couldn't have expected to get access to the CPU after kicking it > anyway. Skip kicking when the target CPU is running a higher class. > > Reviewed-by: Andrea Righi > Signed-off-by: Tejun Heo > --- > kernel/sched/ext.c | 11 ++++++++--- > 1 file changed, 8 insertions(+), 3 deletions(-) You did not sign off on these patches that you are forwarding on for us to apply :(