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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id ADC6CC678D5 for ; Fri, 3 Mar 2023 22:41:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233770AbjCCWlB (ORCPT ); Fri, 3 Mar 2023 17:41:01 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52236 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234081AbjCCWk3 (ORCPT ); Fri, 3 Mar 2023 17:40:29 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6B82B4691 for ; Fri, 3 Mar 2023 14:39:52 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 706ECB81A3D for ; Fri, 3 Mar 2023 22:32:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 26E4EC433EF; Fri, 3 Mar 2023 22:32:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1677882750; bh=YNQxRCifF0nx42NGc3jTIyKkVaxNJZ2YQt5xQmUYJZg=; h=Date:To:From:Subject:From; b=BgcrKeKhqHzU6DaViXrvQlQAAIv1VPW/Q2Xgl6Z1YkCfVwPKOOqnDeNMeeILl6Wj5 G9QUKeTuiduz57vgaubLbGhH7LXxu46PBxm5edzirZdNoplrFa8qyysfmyzJJ71noF 0VB/eX20HsWL1zQNiFEGSVBdqpbCurPjYM7l2fOE= Date: Fri, 03 Mar 2023 14:32:29 -0800 To: mm-commits@vger.kernel.org, tglx@linutronix.de, peterx@redhat.com, mingo@elte.hu, linux@armlinux.org.uk, hpa@zytor.com, hca@linux.ibm.com, frederic@kernel.org, david@redhat.com, cl@linux.com, chenhuacai@kernel.org, atomlin@atomlin.com, mtosatti@redhat.com, akpm@linux-foundation.org From: Andrew Morton Subject: + this_cpu_cmpxchg-s390-switch-this_cpu_cmpxchg-to-locked-add-_local-function.patch added to mm-unstable branch Message-Id: <20230303223230.26E4EC433EF@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The patch titled Subject: this_cpu_cmpxchg: S390: switch this_cpu_cmpxchg to locked, add _local function has been added to the -mm mm-unstable branch. Its filename is this_cpu_cmpxchg-s390-switch-this_cpu_cmpxchg-to-locked-add-_local-function.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/this_cpu_cmpxchg-s390-switch-this_cpu_cmpxchg-to-locked-add-_local-function.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Marcelo Tosatti Subject: this_cpu_cmpxchg: S390: switch this_cpu_cmpxchg to locked, add _local function Date: Fri, 03 Mar 2023 16:58:45 -0300 Goal is to have vmstat_shepherd to transfer from per-CPU counters to global counters remotely. For this, an atomic this_cpu_cmpxchg is necessary. Following the kernel convention for cmpxchg/cmpxchg_local, add S390's this_cpu_cmpxchg_local. Link: https://lkml.kernel.org/r/20230303195908.851997547@redhat.com Signed-off-by: Marcelo Tosatti Cc: Aaron Tomlin Cc: Christoph Lameter Cc: David Hildenbrand Cc: Frederic Weisbecker Cc: Heiko Carstens Cc: "H. Peter Anvin" Cc: Huacai Chen Cc: Ingo Molnar Cc: Peter Xu Cc: "Russell King (Oracle)" Cc: Thomas Gleixner Signed-off-by: Andrew Morton --- --- a/arch/s390/include/asm/percpu.h~this_cpu_cmpxchg-s390-switch-this_cpu_cmpxchg-to-locked-add-_local-function +++ a/arch/s390/include/asm/percpu.h @@ -148,6 +148,11 @@ #define this_cpu_cmpxchg_4(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval) #define this_cpu_cmpxchg_8(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval) +#define this_cpu_cmpxchg_local_1(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval) +#define this_cpu_cmpxchg_local_2(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval) +#define this_cpu_cmpxchg_local_4(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval) +#define this_cpu_cmpxchg_local_8(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval) + #define arch_this_cpu_xchg(pcp, nval) \ ({ \ typeof(pcp) *ptr__; \ _ Patches currently in -mm which might be from mtosatti@redhat.com are mm-vmstat-remove-remote-node-draining.patch this_cpu_cmpxchg-arm64-switch-this_cpu_cmpxchg-to-locked-add-_local-function.patch this_cpu_cmpxchg-loongarch-switch-this_cpu_cmpxchg-to-locked-add-_local-function.patch this_cpu_cmpxchg-s390-switch-this_cpu_cmpxchg-to-locked-add-_local-function.patch this_cpu_cmpxchg-x86-switch-this_cpu_cmpxchg-to-locked-add-_local-function.patch add-this_cpu_cmpxchg_local-and-asm-generic-definitions.patch convert-this_cpu_cmpxchg-users-to-this_cpu_cmpxchg_local.patch mm-vmstat-switch-counter-modification-to-cmpxchg.patch mm-vmstat-use-xchg-in-cpu_vm_stats_fold.patch mm-vmstat-switch-vmstat-shepherd-to-flush-per-cpu-counters-remotely.patch mm-vmstat-refresh-stats-remotely-instead-of-via-work-item.patch