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 D8FE2ECAAD2 for ; Fri, 26 Aug 2022 05:17:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244868AbiHZFR3 (ORCPT ); Fri, 26 Aug 2022 01:17:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45746 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244839AbiHZFRZ (ORCPT ); Fri, 26 Aug 2022 01:17:25 -0400 Received: from mail-pl1-x636.google.com (mail-pl1-x636.google.com [IPv6:2607:f8b0:4864:20::636]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DCBC8C480E for ; Thu, 25 Aug 2022 22:17:24 -0700 (PDT) Received: by mail-pl1-x636.google.com with SMTP id jm11so647861plb.13 for ; Thu, 25 Aug 2022 22:17:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc; bh=NBhfmm8W18tg1OR8/OfEDDSqTYoAFyUg9RoO0VzD8D8=; b=fSgJj9xMVH+ALryiwxjs0GoztWALmqpSifZtVfIzEOzGmUfDMMql4hyhlzyLm2eC3B 5XRxIQTdIjSkhmtQq9m9tI6eA2cuUnnSrXOX0xtDN56dOteBG0n5PqAmyQxXmrmJM5Sy ba0ErZ+Vps1Un4uWAn8BOQ30hGPFEc+uFJa8daE4x8Qh8Z925yym/aUQoW5Ub4SdVH33 ZKVnadh/y1tVPSt0ZRXJhuyZIzKHmOowYiUlho9wmHh2T3qw8tQGRoqmQLhyX+6/LOkz CXpoXy3rru1czRbf8BIppIZxIxzBwmtXxlEnzoqoJhytx295PPB0B7O1EvyQBNS8+ZvU 5DkQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc; bh=NBhfmm8W18tg1OR8/OfEDDSqTYoAFyUg9RoO0VzD8D8=; b=nGa1mcqkmRCPVMVanSZ/c0iGK9efCKLDv3JFy6CPtUZNR9UFFRPfQmsDP2IJV/kSmg Ke4Bwmzrr5rod2tVBPGkqHtFRDRF7gtlCCSvYlHMn9sB5j4gXxcs6NoDnOk+ly/7Mj7z KzHTjmh03T39PVOVz5PLiduFJ3RsX5QqyHSODqoNmWZb9G4WX7T27tT42imjKVuGvTnl 30gFzK7ocNUE1M3dK7gJcPvJNuKg22gPdnLCP2QZDsQVTs+lYkb0SjsUe36IZrMdagGW /63hA29kP/p2W806oqs2cKA+KenERg9Z4bEFih/B1q6l7EAuQPzH3mczCH0Duz7+iRjw lNhw== X-Gm-Message-State: ACgBeo2GnpvL7aj81nxk+PcRY5NeqHdrMGOx3XBKoL9qc6EhtgJzCY2R /H2sXhR/uIHztgd0n9m28upLnw== X-Google-Smtp-Source: AA6agR7190F/JL5rPrzWrxKmaQD+YMfLjdIkVhVkKzPZLa52R9MrODF+m+RAaJl4J0g5a90WWBSAKA== X-Received: by 2002:a17:902:ce81:b0:172:9ac1:6ee with SMTP id f1-20020a170902ce8100b001729ac106eemr2106143plg.93.1661491044200; Thu, 25 Aug 2022 22:17:24 -0700 (PDT) Received: from leoy-huanghe.lan (n058152048222.netvigator.com. [58.152.48.222]) by smtp.gmail.com with ESMTPSA id r7-20020aa79887000000b005367c6db0a4sm377642pfl.183.2022.08.25.22.17.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 25 Aug 2022 22:17:23 -0700 (PDT) Date: Fri, 26 Aug 2022 13:17:18 +0800 From: Leo Yan To: Peter Zijlstra , Arnaldo Carvalho de Melo , Ingo Molnar , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Ali Saidi , Kajol Jain Subject: Re: [PATCH RESEND v6] perf: Add SNOOP_PEER flag to perf mem data struct Message-ID: References: <20220826051603.174792-1-leo.yan@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220826051603.174792-1-leo.yan@linaro.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Aug 26, 2022 at 01:16:03PM +0800, Leo Yan wrote: > From: Ali Saidi > > Add a flag to the perf mem data struct to signal that a request caused a > cache-to-cache transfer of a line from a peer of the requestor and > wasn't sourced from a lower cache level. The line being moved from one > peer cache to another has latency and performance implications. On Arm64 > Neoverse systems the data source can indicate a cache-to-cache transfer > but not if the line is dirty or clean, so instead of overloading HITM > define a new flag that indicates this type of transfer. > > Update notes: > > This patch is to sync the headers between kernel and user space, commit > 2e21bcf0514a ("perf tools: Sync addition of PERF_MEM_SNOOPX_PEER") for > updating kernel header has been merged in the mainline code. Hi Peter, could you help to merge this patch? Thanks! Leo