From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752788Ab1ADRS1 (ORCPT ); Tue, 4 Jan 2011 12:18:27 -0500 Received: from canuck.infradead.org ([134.117.69.58]:60213 "EHLO canuck.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752193Ab1ADRS0 (ORCPT ); Tue, 4 Jan 2011 12:18:26 -0500 From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Arnaldo Carvalho de Melo , Frederic Weisbecker , Ingo Molnar , Mike Galbraith , Paul Mackerras , Peter Zijlstra , Stephane Eranian , Tom Zanussi Subject: [PATCH 1/3] perf test: Clarify some error reports in the open syscall test Date: Tue, 4 Jan 2011 15:18:03 -0200 Message-Id: <1294161485-28528-2-git-send-email-acme@infradead.org> X-Mailer: git-send-email 1.6.2.5 In-Reply-To: <1294161485-28528-1-git-send-email-acme@infradead.org> References: <1294161485-28528-1-git-send-email-acme@infradead.org> X-SRS-Rewrite: SMTP reverse-path rewritten from by canuck.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Arnaldo Carvalho de Melo Rebooted my devel machine, first thing I ran was perf test, that expects debugfs to be mounted, test fails. Be more clear about it. Also add missing newlines and add more informative message when sys_perf_event_open fails. Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Tom Zanussi LKML-Reference: Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-test.c | 18 +++++++++++------- 1 files changed, 11 insertions(+), 7 deletions(-) diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c index 6c99152..1c98434 100644 --- a/tools/perf/builtin-test.c +++ b/tools/perf/builtin-test.c @@ -268,24 +268,26 @@ static int test__open_syscall_event(void) int id = trace_event__id("sys_enter_open"); if (id < 0) { - pr_debug("trace_event__id(\"sys_enter_open\") "); + pr_debug("is debugfs mounted on /sys/kernel/debug?\n"); return -1; } threads = thread_map__new(-1, getpid()); if (threads == NULL) { - pr_debug("thread_map__new "); + pr_debug("thread_map__new\n"); return -1; } evsel = perf_evsel__new(PERF_TYPE_TRACEPOINT, id, 0); if (evsel == NULL) { - pr_debug("perf_evsel__new "); + pr_debug("perf_evsel__new\n"); goto out_thread_map_delete; } if (perf_evsel__open_per_thread(evsel, threads) < 0) { - pr_debug("perf_evsel__open_per_thread "); + pr_debug("failed to open counter: %s, " + "tweak /proc/sys/kernel/perf_event_paranoid?\n", + strerror(errno)); goto out_evsel_delete; } @@ -295,13 +297,15 @@ static int test__open_syscall_event(void) } if (perf_evsel__read_on_cpu(evsel, 0, 0) < 0) { - pr_debug("perf_evsel__open_read_on_cpu "); + pr_debug("perf_evsel__open_read_on_cpu\n"); goto out_close_fd; } - if (evsel->counts->cpu[0].val != nr_open_calls) - pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls, got %Ld ", + if (evsel->counts->cpu[0].val != nr_open_calls) { + pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls, got %Ld\n", nr_open_calls, evsel->counts->cpu[0].val); + goto out_close_fd; + } err = 0; out_close_fd: -- 1.6.2.5