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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 2C1F7C4360F for ; Fri, 5 Apr 2019 15:21:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 069C12175B for ; Fri, 5 Apr 2019 15:21:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731453AbfDEPVQ (ORCPT ); Fri, 5 Apr 2019 11:21:16 -0400 Received: from mail-it1-f195.google.com ([209.85.166.195]:38873 "EHLO mail-it1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726291AbfDEPVQ (ORCPT ); Fri, 5 Apr 2019 11:21:16 -0400 Received: by mail-it1-f195.google.com with SMTP id f22so10125793ita.3 for ; Fri, 05 Apr 2019 08:21:15 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=uh0ShQqIbBMkLRYP0daxYFjdegJIus2IHRa2hCK0ZgY=; b=oL5oIVZkquwRNJDae1r8YPeVxWMIrOPhdjqjxIDP6p75jaKNdFfYxDJQSX7CFtdfet sASJ1AcKN5tyaGSDnfYZDNKeH9l6FZ3vr3GerHJC7TNeCaINPpqlFvzQrhq3N7kKJW4i Ii3pjAPp5Cnwe9RaQH7qinVzwKgQXv6FyOMJAC3pm5R0sqPA3wJmGm6w7G3UTR4myoLs /0TWDSNVzYxS0pVVESBbxI7EiPN51pMBFf61CLSsaX3hFmH5Hn+k6r05eLr8bGTUGG+d 1xzaQbEY9vvKc1JuUmI6XgtJq3u77wHA9mcXLe6WuxRlYg7WVbv5kB+f9xQDy0M433R9 nAvw== X-Gm-Message-State: APjAAAWwqtjOv/o5EkMtqozYf2c0iB99vdI9vfJB3/JxwoHJnjtN+M19 DagkaenVHcx3PTSOVnmDUoSg0e5CPgNYVzXBWYeodw== X-Google-Smtp-Source: APXvYqzUMicJkVoctqrHq8H0L7Pl8bcYyYlWzQd4WmWJ/kpbfIOot7Gj6RArCsenAjEV1mJ/Z/OHrdv+wsuFw8tKWZk= X-Received: by 2002:a02:6951:: with SMTP id e78mr4087132jac.132.1554477675541; Fri, 05 Apr 2019 08:21:15 -0700 (PDT) MIME-Version: 1.0 References: <20190404172545.20928-1-kasong@redhat.com> <20190405071704.GC4038@hirez.programming.kicks-ass.net> In-Reply-To: <20190405071704.GC4038@hirez.programming.kicks-ass.net> From: Kairui Song Date: Fri, 5 Apr 2019 23:21:03 +0800 Message-ID: Subject: Re: [RFC PATCH] perf/x86: make perf callchain work without CONFIG_FRAME_POINTER To: Peter Zijlstra Cc: Linux Kernel Mailing List , Ingo Molnar , Arnaldo Carvalho de Melo , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Thomas Gleixner , Borislav Petkov , "H. Peter Anvin" , Dave Young , Josh Poimboeuf Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Apr 5, 2019 at 3:17 PM Peter Zijlstra wrote: > > And you forgot to Cc Josh.. > Hi, thanks for the reply and Cc more people, I just copies the list from ./scripts/get_maintainer.pl, will pay more attention next time. > > > > Just found with ORC unwinder the perf callchain is unusable, and this > > seems fixes it well, any suggestion is welcome, thanks! > > That whole .direct stuff is horrible crap. > Sorry if I did anything dumb, but I didn't find a better way to make it work so sent this RFC... Would you mind tell me what I'm doing wrong, or give any suggestion about how should I improve it? -- Best Regards, Kairui Song