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 X-Spam-Level: X-Spam-Status: No, score=-3.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7BBD2C43603 for ; Mon, 16 Dec 2019 21:31:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4D73720665 for ; Mon, 16 Dec 2019 21:31:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="WdbAFnW4" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727070AbfLPVbb (ORCPT ); Mon, 16 Dec 2019 16:31:31 -0500 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:29515 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726646AbfLPVbb (ORCPT ); Mon, 16 Dec 2019 16:31:31 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1576531889; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=Gf2ricw+onYr0gm+AR6+k5HSEyYMCtkMzHEny3QS9g8=; b=WdbAFnW4zXr6qmGNd4ljKoqB/yIfIWc6OxwpBvxDmACl2fP0WrFbnYQnG9gPMz0wqbe4Ti PBGSmpLWSOOkjL/xaYdZCHrIggQnnKSKzVRHrkSslbsWw5vdd+lcoKrXCqRPapHvviamwb 5up4GRGbkG4yCTWSSjnLJqgRkkR+YWI= Received: from mail-qk1-f199.google.com (mail-qk1-f199.google.com [209.85.222.199]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-419-6x9gTAy3MpqRDqrfms42Rw-1; Mon, 16 Dec 2019 16:31:28 -0500 X-MC-Unique: 6x9gTAy3MpqRDqrfms42Rw-1 Received: by mail-qk1-f199.google.com with SMTP id a6so5540133qkl.7 for ; Mon, 16 Dec 2019 13:31:28 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=Gf2ricw+onYr0gm+AR6+k5HSEyYMCtkMzHEny3QS9g8=; b=QptSQaYlAQ71pjW/DYfEXlvygfmOss8+STlAb5YFfWBFE3/PZjfi/yTIaN4jrohN2u Gx4GSmh2YwVWuLfwG73y7TeN2vz5+Tbg883/3DrR+qTFxlEZbzEeD4UWwNys6nxFpRCF XUfugqPmxwpATI6pceGHUS7nZ3PpViB0ems74SGwbgTw+WFyT5B0Ul/Qda9SxPbeItUw fFAnjLp+OKkLPIZAzUh1bA7FijGtxJnph+fWQyH1F3TmG47dF23MoZAroSsKGzqSl/YL i4zXpFwHmYrgyYWCtBbrxB+R+bFZXyPCgGHLcKEkM3atFUBVP7GXP0OlBxJO+qtly0oS 4PDw== X-Gm-Message-State: APjAAAX7Ub4lO+HgekYFbBSsTh2ctINRcGXL6SVYv9/d54dQ8pxA4oVW N2fEEKfF1TEs+EexWqbWJlOKq1oy7m5GKo8rE2P9L40gwpzFK6etg1x4qIEP+n80f8fQNcaGyBL 2QP1C5BgZGRxo5daKI9Ua5n8q X-Received: by 2002:ac8:7109:: with SMTP id z9mr1447527qto.233.1576531887603; Mon, 16 Dec 2019 13:31:27 -0800 (PST) X-Google-Smtp-Source: APXvYqwmkOClnLDiNaNQg+55Xs47xPBnhGiLFn5D+m3t+yLEvJAqK5TLM3f+g2F98MHsFzifajYp4Q== X-Received: by 2002:ac8:7109:: with SMTP id z9mr1447500qto.233.1576531887357; Mon, 16 Dec 2019 13:31:27 -0800 (PST) Received: from xz-x1.yyz.redhat.com ([104.156.64.74]) by smtp.gmail.com with ESMTPSA id y184sm6321943qkd.128.2019.12.16.13.31.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Dec 2019 13:31:26 -0800 (PST) From: Peter Xu To: linux-kernel@vger.kernel.org Cc: Thomas Gleixner , Juri Lelli , peterx@redhat.com, Marcelo Tosatti , Peter Zijlstra Subject: [PATCH v2 0/3] smp: Allow smp_call_function_single_async() to insert locked csd Date: Mon, 16 Dec 2019 16:31:22 -0500 Message-Id: <20191216213125.9536-1-peterx@redhat.com> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This v2 introduced two more patches to let mips/kernel/smp.c and kernel/sched/core.c to start using the new feature, then we can drop the customized implementations. One thing to mention is that cpuidle_coupled_poke_pending is another candidate that we can consider, however that cpumask is special in that it's not only used for singleton test of the per-vcpu csd when injecting new calls, but also in cpuidle_coupled_any_pokes_pending() or so to check whether there's any pending pokes. In that sense it should be good to still keep the mask because it could be faster than looping over each per-cpu csd. Patch 1 is the same as v1, no change. Patch 2-3 are new ones. Smoke tested on x86_64 only. Please review, thanks. Peter Xu (3): smp: Allow smp_call_function_single_async() to insert locked csd MIPS: smp: Remove tick_broadcast_count sched: Remove rq.hrtick_csd_pending arch/mips/kernel/smp.c | 8 +------- kernel/sched/core.c | 9 ++------- kernel/sched/sched.h | 1 - kernel/smp.c | 14 +++++++++++--- 4 files changed, 14 insertions(+), 18 deletions(-) -- 2.23.0