From patchwork Mon Sep 4 14:00:35 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnaldo Carvalho de Melo X-Patchwork-Id: 809698 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3xmBVQ5TgWz9s75 for ; Tue, 5 Sep 2017 00:06:54 +1000 (AEST) Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 3xmBVQ4WZ7zDqG3 for ; Tue, 5 Sep 2017 00:06:54 +1000 (AEST) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=kernel.org (client-ip=198.145.29.99; helo=mail.kernel.org; envelope-from=acme@kernel.org; receiver=) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3xmBS60LPdzDqZ8 for ; Tue, 5 Sep 2017 00:04:54 +1000 (AEST) Received: from jouet.infradead.org (unknown [179.97.41.186]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5F40421BF5; Mon, 4 Sep 2017 14:04:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5F40421BF5 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=acme@kernel.org From: Arnaldo Carvalho de Melo To: Ingo Molnar Subject: [PATCH 04/13] perf test powerpc: Fix 'Object code reading' test Date: Mon, 4 Sep 2017 11:00:35 -0300 Message-Id: <20170904140044.22912-5-acme@kernel.org> X-Mailer: git-send-email 2.13.5 In-Reply-To: <20170904140044.22912-1-acme@kernel.org> References: <20170904140044.22912-1-acme@kernel.org> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Arnaldo Carvalho de Melo , Alexander Shishkin , linux-kernel@vger.kernel.org, Ravi Bangoria , linux-perf-users@vger.kernel.org, Peter Zijlstra , Jiri Olsa , Namhyung Kim , linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Ravi Bangoria 'Object code reading' test always fails on powerpc guest. Two reasons for the failure are: 1. When elf section is too big (size beyond 'unsigned int' max value). objdump fails to disassemble from such section. This was fixed with commit 0f6329bd7fc ("binutils/objdump: Fix disassemble for huge elf sections") in binutils. 2. When the sample is from hypervisor. Hypervisor symbols can not be resolved within guest and thus thread__find_addr_map() fails for such symbols. Fix this by ignoring hypervisor symbols in the test. Signed-off-by: Ravi Bangoria Acked-by: Adrian Hunter Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Michael Ellerman Cc: Namhyung Kim Cc: Peter Zijlstra Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1504170896-7876-1-git-send-email-ravi.bangoria@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/tests/code-reading.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-reading.c index 761c5a448c56..466a462b26d1 100644 --- a/tools/perf/tests/code-reading.c +++ b/tools/perf/tests/code-reading.c @@ -237,6 +237,11 @@ static int read_object_code(u64 addr, size_t len, u8 cpumode, thread__find_addr_map(thread, cpumode, MAP__FUNCTION, addr, &al); if (!al.map || !al.map->dso) { + if (cpumode == PERF_RECORD_MISC_HYPERVISOR) { + pr_debug("Hypervisor address can not be resolved - skipping\n"); + return 0; + } + pr_debug("thread__find_addr_map failed\n"); return -1; }