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=-3.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_GIT 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 48AC9C43387 for ; Fri, 21 Dec 2018 03:43:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0E56821905 for ; Fri, 21 Dec 2018 03:43:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="i8QDqZ2i" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390925AbeLUDnt (ORCPT ); Thu, 20 Dec 2018 22:43:49 -0500 Received: from mail-pg1-f196.google.com ([209.85.215.196]:41417 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388947AbeLUDnt (ORCPT ); Thu, 20 Dec 2018 22:43:49 -0500 Received: by mail-pg1-f196.google.com with SMTP id m1so1843501pgq.8 for ; Thu, 20 Dec 2018 19:43:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=5GKZ4jHUWo09u0m2POrSvLjobjNnP0ZziBYsduXxF20=; b=i8QDqZ2iKgXoy/NRlsPVQT3mSJ3OcoEu0HvJb1ILchFv6ilCQ76FwacJRB6ymmW1oa tL7EA1YCBwjOn6l+lMzABvgXyjPzV47J+A1Bk5fd+ObqErxiWfD45hHHV5tUVQw8fqWK naLc3Fd3DjzbA93xeObEFqgRzGDFRlGyaTupcvRZDemv4gpzFCJxm+TaGGNOOYgtgM9N +pkrh35jTRfNf1/QbQDTSYBAGJgG5gjQfc1lviIeFwi0pjoQl1B3fmn5n0TYTIfLnSSF Gowq0+wd1WkNbN9k6KNq5wkSfsQm6XimAMDZLgHZEN9OJJW0pr2FB22lp3bx19oHJrCt 2vYg== 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; bh=5GKZ4jHUWo09u0m2POrSvLjobjNnP0ZziBYsduXxF20=; b=VasnvM4h+ax8qlTl+tY8raMHG/rzzTIgl4U/LwQ5Wb2eupDvABkj5swl8pFp/+DiSE Ci/ety1E7zcwS3XoP1dfzPW5lMWBsSP7SKc+KwrVBhbuAReTe/iiH80sQyxuD5HA3StU 2Bjjly4O1GdA0UPSmqwmZNSUidDKGDywNbikWrGEOkFS2jLisKvoPgrJkpPnjEfhZTIE ycO2oxljuwMM9UfDftDFVyF0dxqQ3f2UCq/nQ9MJpSgBUUI+kNZgx/3GRj5B8ZCfOsXC GjgdsgclAKjSkN2QXVW+HMJ824H2F4xQE5cyKXHahsS/J1FR1XQZ1WhMFkndlPYXIWxD 40DQ== X-Gm-Message-State: AA+aEWY+QDK2U/GmVgC6joVfZ1KmdYKTw7exOpZvF88Ph1vpneZg+IwD Z2o9+Db5PPRHrnn02xS3i2BTRlPJ X-Google-Smtp-Source: ALg8bN7ejH9Td/qLEUxyAxN64GtEPzUsgE340CdTVT+VftY6zmHPdXqNkbrZoiT+CKYtal74QqVMFw== X-Received: by 2002:a62:9111:: with SMTP id l17mr877328pfe.200.1545363827972; Thu, 20 Dec 2018 19:43:47 -0800 (PST) Received: from fainelli-desktop.igp.broadcom.net ([192.19.223.250]) by smtp.gmail.com with ESMTPSA id q199sm39749695pfc.97.2018.12.20.19.43.46 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 20 Dec 2018 19:43:47 -0800 (PST) From: Florian Fainelli To: linux-kernel@vger.kernel.org Cc: cphealy@gmail.com, Florian Fainelli , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Kim Phillips , Greg Kroah-Hartman , Thomas Gleixner , Ravi Bangoria , Thomas Richter , rmk+kernel@armlinux.org.uk, l.stach@pengutronix.de Subject: [PATCH v3 0/2] perf tests: Check for ARM [vectors] page Date: Thu, 20 Dec 2018 19:43:35 -0800 Message-Id: <20181221034337.26663-1-f.fainelli@gmail.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi all, I just painfully learned that perf would segfault when CONFIG_KUSER_HELPERS is disabled because it unconditionally makes use of it. This patch series adds an ARM test for that by leveraging the existing find_vdso_map() function and making it more generic and capable of location any map within /proc/self/maps. Changes in v3: - remove find_vdso_map() call find_map() with VDSO__MAP_NAME Changes in v2: - use strlen() instead of sizeof() -1 since we made the page name a parameter - use TEST_OK/TEST_FAIL in lieu of 0/-1 - added an error message indicating CONFIG_KUSER_HELPERS might be disabled Florian Fainelli (2): perf tools: Make find_vdso_map() more modular perf tests: Add a test for the ARM 32-bit [vectors] page tools/perf/Makefile.perf | 4 ++-- tools/perf/arch/arm/tests/Build | 1 + tools/perf/arch/arm/tests/arch-tests.c | 4 ++++ tools/perf/arch/arm/tests/vectors-page.c | 24 +++++++++++++++++++ tools/perf/perf-read-vdso.c | 6 ++--- tools/perf/tests/tests.h | 5 ++++ .../perf/util/{find-vdso-map.c => find-map.c} | 7 +++--- tools/perf/util/vdso.c | 6 ++--- 8 files changed, 45 insertions(+), 12 deletions(-) create mode 100644 tools/perf/arch/arm/tests/vectors-page.c rename tools/perf/util/{find-vdso-map.c => find-map.c} (71%) -- 2.17.1