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=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,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 0E068C43441 for ; Tue, 27 Nov 2018 16:11:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C979C21104 for ; Tue, 27 Nov 2018 16:11:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=linaro.org header.i=@linaro.org header.b="S8rQS03l" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C979C21104 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730646AbeK1DJ5 (ORCPT ); Tue, 27 Nov 2018 22:09:57 -0500 Received: from mail-yw1-f45.google.com ([209.85.161.45]:34251 "EHLO mail-yw1-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729960AbeK1DJ5 (ORCPT ); Tue, 27 Nov 2018 22:09:57 -0500 Received: by mail-yw1-f45.google.com with SMTP id g75so9365679ywb.1 for ; Tue, 27 Nov 2018 08:11:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=qJJbUaLODuI75MvctT19W6ZB+Xpak+0bNYOGaJUIcGU=; b=S8rQS03lI6hJSMw3RdOU/3n+9w1URyXuuTkBOx8c0NJxLVu5ElrnpDsVDgC/iJn4M8 A9r+1iGRs2BKWtrjzOLeASCwbMCJoYa4NzL7+GslCK52Kf7Yl6rCkHzjmd8KR9+sd8Qp 4BOLnjKy4gBJNY8UBaeVuLEAiLd57Mtsg4MGU= 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:content-transfer-encoding; bh=qJJbUaLODuI75MvctT19W6ZB+Xpak+0bNYOGaJUIcGU=; b=MfxrQrP0DOGv6qWTIs3apcqlnHGP2uSzkWb578GuAnrkKFvBrwOSrvANokmH/HwLI5 /nzyyTuVDedBtCSfrUYoq6lfKwzHXj7dCVpFNa3EedfWgbgdyYL/QxZN6ElwfzFTJhRB h0Y2704WwVH1ZszwB73YoAg30TyYucBKyBfAQnjtQpKtHfISgkRs/Z2ezA/YmQeNpPnH 7fVBn1GkrCa1tiIEpBpla3A34sJ/ZbGGw5E27pfCml8+EmqcGTr6YnS8Ei9ugxX4K6Nh GS5sjPBlPbEydFqNsCTulesDZHO7kBkIoeYnNw/MFU6wexcJrJ0tqR4N85T52gZmQWJz MDLw== X-Gm-Message-State: AGRZ1gK3FCuAJoq/gGklTmgfDW/h95hoisPEZEVXzUEgpoi0bgjFQc9l tIpqpIiYXDz+VpT9KDKo+taZgm1VdSVVVaFrd+yBAA== X-Google-Smtp-Source: AJdET5ffXjVp8T/HVuNdibb6BcnBSOCihBxwvi6wYVJ86ZOgsIK7Thzs8Akb7VfCpbxvffCEOnjYuNgeVFjqA/tgk8c= X-Received: by 2002:a0d:e24b:: with SMTP id l72mr35201562ywe.25.1543335093860; Tue, 27 Nov 2018 08:11:33 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Masami Hiramatsu Date: Wed, 28 Nov 2018 01:11:22 +0900 Message-ID: Subject: Re: File not found: /sys/kernel/debug/tracing/events/syscalls To: Naresh Kamboju Cc: Linux kernel mailing list , "Steven Rostedt (Red Hat)" , Ingo Molnar , Masami Hiramatsu Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, I found that the commit 4378a7d4be30 ("arm64: implement syscall wrappers") changed the syscall wrapper function names by adding __arm64_ prefix. So arm64 kernel should have its own arch_syscall_match_sym_name(). Thank you, 2018=E5=B9=B411=E6=9C=8828=E6=97=A5(=E6=B0=B4) 0:22 Naresh Kamboju : > > While debugging the selftests/bpf: get_cgroup_id_user test failure on arm= 64 > where the test is expecting trace file > /sys/kernel/debug/tracing/events/syscalls/sys_enter_nanosleep/id > but this path not enabled after enabling required kernel configuration al= so. > CONFIG_FTRACE_SYSCALLS=3Dy > > strace output: > open(\"/sys/kernel/debug/tracing/events/syscalls/sys_enter_nanosleep/id\"= , > O_RDONLY) =3D -1 ENOENT (No such file or directory) > > This problem noticed on Linux mainline kernel version 4.20.0-rc3. > > Best regards > Naresh Kamboju --=20 Masami Hiramatsu