Received: by 2002:a25:4158:0:0:0:0:0 with SMTP id o85csp373616yba; Fri, 5 Apr 2019 08:22:16 -0700 (PDT) X-Google-Smtp-Source: APXvYqwpT3Lkvb2DCXVewKekCXXGmFzIJ4n1WeLLYAB/zBg7ey171LU8+G6ukAdY32Uj3YMmA1uE X-Received: by 2002:a63:30c5:: with SMTP id w188mr12562162pgw.76.1554477736163; Fri, 05 Apr 2019 08:22:16 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1554477736; cv=none; d=google.com; s=arc-20160816; b=TTYkH2Em+acPmytLRnt0tnHBY68OViaStczoYLbBzpimWNRBlQarUlkvbVRDz507At kRBi6wlYPPyyS80sFAkJarWj44niYT5CDczq9b5N5q1ZPZGhw4P71lb/A5ps142jfxRK FGpzYaQcx2TIKZyoX9wETsx278JxCAPdU/OpD7Vh6cO8ZeBgldpDYrU7Lfv0iwq5GJFW NIgeuSG9JUQo6NqUgIdQH52orA6NiadQ8qJRa6eDkR7W1PCZM/tHcCc6PwB2xhYTJZvm IaEYs5VAUzQjqn/dPZm3ZR0/T82SfgXykgttRKJ0cvlr3cA0MB8nR6vjDW2SeTVWx9yy 4DOw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version; bh=uh0ShQqIbBMkLRYP0daxYFjdegJIus2IHRa2hCK0ZgY=; b=sDxPzT5GrYoa9QlBvvEJUL+Y120i/CxKPvBp0i6iHzhr/3P13gN45Hu5LtwdN/TLh3 qcBT5GaZ3vTJeX9HRRH3sstEj4vAHK4OZ/fsrsYTuvmvuzI1JGPn8ZPFji3J1//Cbhxs Mu9rwVpcTyiCYrOh1VzKrDwoIDCVVHEZ99NRrKc4nVzMvPlklBC5cR6EHRuwNKmX0Y4j o+DXDZM8qoYRQyZ6CrUbiKYmSLPZ2KDi6DuNhdn2NM8qcNdDLB5wDRhMjN9IbyJI0H6A YMezUq0srbxJqCnRq4GXKDw6aomhWz+Jv+6iNb2CHwAHjHOYP6GDFRZovaOMaftg/boY Zebg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id u10si13328166pga.205.2019.04.05.08.22.00; Fri, 05 Apr 2019 08:22:16 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731423AbfDEPVQ (ORCPT + 99 others); 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-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