From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A8D99C369DC for ; Tue, 29 Apr 2025 20:49:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=uvedrWQOUKa2y7ZklDmmQbgIEgSsUfGOeSSmitQGk3c=; b=42vapgCTWgOo2RuJnmfYDJTOLs gHf1g1D74TijNFI12ZYsV0VzmH5sIFjs36zPjNmlW6fXJTHOiG2qhQJ9vFBvWBCCxZVTNvI2uoBqD lIHswDZfZOwKoYY38UoN9YA7nycYnfvJnnTVEOthB47gaLFzICUb0ZdXYbrAKntW77rX2Xv2PSb7j P9qdgbKs/diHxno1+L7L2Kr2Pd0cDmkKHDE2HjXLrUhHOBaGnv/7tXJ/zsfgUQAcYpGsz3u3Xl+NZ 2Xqxw2U0FJcZLx08+rByZtOgmg5LRsTVKMnkN09wx2jIseNNKyvHsVYVRfORRmEECGTIGa5Du4wRP 5XpGCLng==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1u9rtV-0000000AnAN-02CC; Tue, 29 Apr 2025 20:49:33 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1u9rZ1-0000000AkYV-3WQw for linux-arm-kernel@lists.infradead.org; Tue, 29 Apr 2025 20:28:23 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id ED8E76846E; Tue, 29 Apr 2025 20:27:56 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 858EDC4CEE3; Tue, 29 Apr 2025 20:28:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1745958503; bh=yVQiGQTIo9RNGx1kcMdYwpv2Iyy6ige9ZYny4OmlJuw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=t94tYQyva5/fI1bTsOvrcAuWZgqTtzIRx5afVtXJ9exMTO1hd3U2ECNxmayHBYrEK tDYlVQkhTOx2twKfjj2BY4I0hx1LJA7RKTx6Rj/ftyIWQs2G8Boy6M+1dewrs3xwEQ /REjkLXORQ5poiLHG/sElok6YHGE8GSobRwUb1EHtbrnlujYccq8Ob8FTWm1ptUhYm z9T91wkFj8X4UhQbmaiTkaW9J77yLdQMi7m+lOIT/Ul/8fE/EUd81YPBySTp/7EwWV imRWR+vM+WxKzF8nU9sqUMCyHOAoRDgl/Bl6N2jOJBZ1RQxcjirl1l6leAjN/UR+CK Kx44aNX35py5w== From: Will Deacon To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org, Valentin Schneider Cc: catalin.marinas@arm.com, kernel-team@android.com, Will Deacon , Mike Galbraith , Peter Collingbourne , Mark Rutland , Thomas Gleixner , Neeraj Upadhyay , Thiago Jung Bauermann , Mark Brown , Kristina Martsenko , Sebastian Andrzej Siewior , Petr Tesarik , Jinjie Ruan , Juri Lelli , Phil Auld Subject: Re: [PATCH 0/1] arm64: enable PREEMPT_LAZY Date: Tue, 29 Apr 2025 21:27:52 +0100 Message-Id: <174593068821.431779.9112946165910138990.b4-ty@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20250305104925.189198-1-vschneid@redhat.com> References: <20250305104925.189198-1-vschneid@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, 05 Mar 2025 11:49:24 +0100, Valentin Schneider wrote: > Hey folks, > > This is a resubmission of Mark's patch [1]. I didn't end up changing anything > other than fluffing up the changelog. > > I ran this under an arm64 VM, added some trace_printk's and checked that > sched_switch's between runnable hackbench threads would occurr in the right > conditions: > o with TIF_NEED_RESCHED_LAZY set > o at the tick > o at do_notify_resume() > o with TIF_NEED_RESCHED set > > [...] Applied to arm64 (for-next/entry), thanks! [1/1] arm64: enable PREEMPT_LAZY https://git.kernel.org/arm64/c/c8597e2dd8b6 Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev