From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792954058; b=UDj0TcLegPGIb+NSQdzEoX6ogJ/pr4JZ15juckc45Gny/W/8cpi3W0trsN9/eDJB4Ngi Jhr9Lmp+8LR6vlb7k7cmB/BwQ4/rGJQhV/cB0hrZ1N2tqq+AzT7DUxzkT5pU2/DPc4lE9 ePqnxRa/woN6aaHN2BTtVXAMBVgWmp0QfyXR4mwJHgdX5afNC6xaVK3aIhknS5A0Gei5N v8r6UpsfWHUF54jbkplGLB/wJxEuhLIcUjtNh8JBLhcXc3W2q2FE1P9ZFzN9KMsoYE5wk 0As0aK7GgXm3KlL6IhZ2JLAOym25oodAmg13NUYIWR0KX2eCItS1tfcZMpQutuIt4dw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792954058; h=Received:DKIM-Signature:Date:From:To:Cc:Subject:Message-ID: References:MIME-Version:Content-Type:Content-Disposition: Content-Transfer-Encoding:In-Reply-To; bh=5wnAqR12mDvQqCEE/MRBIlSMPEALxmmJZfIrTK2aMRo=; b=oI8t25y2n3uUEUo5oZcz1ZhwNch0Zer9U2KJIUcGZxFJQlg09c+k01KATCClZitp7nVe QOpGuo43gqQs3bMRRJDQrc0EkmNQ/AmE9VzYDYqucXvSv2x/2i6lwiwrlZaagZ5mns35P 1sgk98K5TOOrhJEM5poHi15RL2TVjhq2ow9zLUove1SWVRZslP3kwxpDa47ltRSE+mcP8 J4LXWsvXDIIB+7wkS4snOpWPuollB6gV/R70FBmnrgnEhSSmIvSqQFZu2N1pZTAPw2FU1 9wX1ISusI8e6nAL2kKacaN4zU39t2QY1pRbAmN0WczqXPPHMJW4pKsscU2Td1YKfpOw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=J6C08BAV; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 62A60606A31B; Sun, 25 Oct 2026 18:47:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=J6C08BAV Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3D2E91F01828; Sun, 25 Oct 2026 18:47:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1792954057; bh=5wnAqR12mDvQqCEE/MRBIlSMPEALxmmJZfIrTK2aMRo=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=J6C08BAV+F3iiWM9FlcPNqjRNGrOHJtPKNVu3OUcI7HqHZFW2bJf7N0c8G+JK3kuC Q9nwKr5QZZOaBx04tv6bryafAtS3l8ddZSESLreLqFOuH9yUyY5YFa2WLyjKrfokOY I5aQbn4Z7ktlYAGGiVhADA+Z2owm484BBGS0MXEu9+8SJ1Xd+9nopeImLHezCjmbsI l+b9jyQmwALbi3HX0Fd2Od6jLx4uuOwo/I0r78SNRDtzRGmz0Z0w8l5bueq5IOCdWr lyimjYWJ1aQUhpScd4g5pAdhgA9k8TZ3KLStW1ngSWF9YCMs/TnFJYzxEr+8kDEq+3 1F+kG3xlNHiHw== Date: Sun, 25 Oct 2026 19:47:34 +0100 From: Frederic Weisbecker To: Peter Zijlstra Cc: Srikar Dronamraju , Ingo Molnar , Russell King , Catalin Marinas , Will Deacon , Guo Ren , Huacai Chen , WANG Xuerui , Thomas Bogendoerfer , Florian Fainelli , Broadcom internal kernel review list , Jiaxun Yang , "James E.J. Bottomley" , Helge Deller , Scott Wood , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , "Christophe Leroy (CS GROUP)" , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Yoshinori Sato , Rich Felker , John Paul Adrian Glaubitz , "David S. Miller" , Andreas Larsson , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Chris Zankel , Max Filippov , LKML , Srikar Dronamraju , Dietmar Eggemann , Kees Cook , Jinjie Ruan , mrigendrachaubey , Marc Zyngier , Pengjie Zhang , Thierry Reding , Xi Ruoyao , "Rafael J. Wysocki (Intel)" , Tiezhu Yang , Rong Bao , Hui Wang , Thorsten Blum , Josh Poimboeuf , linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, loongarch@lists.linux.dev, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org Subject: Re: [PATCH] sched/hotplug: Remove unused idle_task_exit Message-ID: References: <20261016095711.1364609-1-srikar@linux.ibm.com> <20261023165434.GX2823843@noisy.programming.kicks-ass.net> X-Mailing-List: linux-csky@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20261023165434.GX2823843@noisy.programming.kicks-ass.net> Le Fri, Oct 23, 2026 at 06:54:34PM +0200, Peter Zijlstra a écrit : > On Fri, Oct 23, 2026 at 03:40:15PM +0200, Frederic Weisbecker wrote: > > Le Fri, Oct 16, 2026 at 03:26:40PM +0530, Srikar Dronamraju a écrit : > > > Commit 21641bd9a7a7 ("lazy tlb: fix hotplug exit race with > > > MMU_LAZY_TLB_SHOOTDOWN") moved the handling previously performed by > > > idle_task_exit() into the scheduler CPU hotplug path using > > > sched_force_init_mm(). > > > > > > As a result, idle_task_exit() is now an empty stub and the remaining > > > architecture call sites have no effect. > > > > > > Remove the calls to idle_task_exit() and the now unused stub. > > > > > > Signed-off-by: Srikar Dronamraju > > > > Reviewed-by: Frederic Weisbecker > > Excellent; less is more and all that. Shall I take this through the > scheduler tree? Yes please :-) -- Frederic Weisbecker SUSE Labs