From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 7BE20423E98 for ; Thu, 16 Jul 2026 13:14:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784207679; cv=none; b=E0ESXtPNP7oKKF2Lk/PgZfDzy5OvNWVxUo4muznSVFF4npaLIWP1Po1dGfkAnj0gGOSPWpM2MSpl2zWGcGHwKehy/QAH7fIQXGwJ/ZAUg1qO1XnwiM7Ad/mkPfEd0cVdD/KPWwC9z1eAXH1tg+bguqBtF8EyErsTTi5bXKuCtbw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784207679; c=relaxed/simple; bh=JAoWNzpOOc0xKrjrlqVuYH+zpLf64fzoQgMSGMxplqA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=nkm3oasm78bmlzVL8iu76IFDY5i70Cgl/MzQfGXOU0Ej/6/3sjLMv9a1g28S4WpE7g4VBpxzmpCzHUtfCBEChRnIY4rIm+9d4bmGoscyBXFlx3ebWaB1u71KGwfP30CF1/wIM18dGiEeDaIrj6ipkoeucvQVeiS70olpjieHsvo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=WlWHrqKb; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="WlWHrqKb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 71C7D1F000E9; Thu, 16 Jul 2026 13:14:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784207676; bh=JAoWNzpOOc0xKrjrlqVuYH+zpLf64fzoQgMSGMxplqA=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=WlWHrqKbDMPN40+FHoCt2bxZ6qi0kXqUoGECecRMkwqU2ntHMCP4cdZjbtHep9gYK +zKAgn//GCzPeRSy7keX6hBGsB32s/22FmGijVeVITCb5biKdx5g2RHnhTZDICc2sT Qkgt8KGCD8TSmwicn71yn0Sc91BtE4upuq7MmjaA= Date: Thu, 16 Jul 2026 15:12:00 +0200 From: Greg KH To: Erwan Velu Cc: stable@vger.kernel.org, Adam Li , Peter Zijlstra , colin.i.king@gmail.com Subject: Re: sched/fair: Only update stats for allowed CPUs when looking for dst group Message-ID: <2026071635-goliath-clamp-5cef@gregkh> References: 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: On Wed, Jul 15, 2026 at 04:29:09PM +0200, Erwan Velu wrote: > Please backport commit 82d6e01a0699800efd8b048eb584c907ccb47b7a, introduced > in 6.19 as all stable kernels are affected by a significant performance > issue. Now applied to the 6.18.y tree, thanks. greg k-h