From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752500AbaANQkj (ORCPT ); Tue, 14 Jan 2014 11:40:39 -0500 Received: from terminus.zytor.com ([198.137.202.10]:52766 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752476AbaANQk2 (ORCPT ); Tue, 14 Jan 2014 11:40:28 -0500 Date: Tue, 14 Jan 2014 08:39:46 -0800 From: tip-bot for Arnaldo Carvalho de Melo Message-ID: Cc: linux-kernel@vger.kernel.org, eranian@google.com, paulus@samba.org, acme@redhat.com, hpa@zytor.com, mingo@kernel.org, peterz@infradead.org, efault@gmx.de, namhyung@kernel.org, jolsa@redhat.com, fweisbec@gmail.com, adrian.hunter@intel.com, dsahern@gmail.com, tglx@linutronix.de Reply-To: mingo@kernel.org, hpa@zytor.com, acme@redhat.com, paulus@samba.org, eranian@google.com, linux-kernel@vger.kernel.org, efault@gmx.de, peterz@infradead.org, namhyung@kernel.org, jolsa@redhat.com, fweisbec@gmail.com, dsahern@gmail.com, adrian.hunter@intel.com, tglx@linutronix.de To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] perf report: Move logic to warn about kptr_restrict'ed kernels to separate function Git-Commit-ID: fad2918ed5171e6299a9b4b885d0459f35ee7377 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.1 (terminus.zytor.com [127.0.0.1]); Tue, 14 Jan 2014 08:39:53 -0800 (PST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: fad2918ed5171e6299a9b4b885d0459f35ee7377 Gitweb: http://git.kernel.org/tip/fad2918ed5171e6299a9b4b885d0459f35ee7377 Author: Arnaldo Carvalho de Melo AuthorDate: Wed, 8 Jan 2014 10:10:00 -0300 Committer: Arnaldo Carvalho de Melo CommitDate: Mon, 13 Jan 2014 10:06:25 -0300 perf report: Move logic to warn about kptr_restrict'ed kernels to separate function Its too big, better have a separate function for it so that the main logic gets shorter/clearer. Cc: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-ahh6vfzyh8fsygjwrsbroeu0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-report.c | 56 ++++++++++++++++++++++++--------------------- 1 file changed, 30 insertions(+), 26 deletions(-) diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index bf8dd2e..f2ff860 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -412,14 +412,41 @@ static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist, return 0; } +static void report__warn_kptr_restrict(const struct report *rep) +{ + struct map *kernel_map = rep->session->machines.host.vmlinux_maps[MAP__FUNCTION]; + struct kmap *kernel_kmap = map__kmap(kernel_map); + + if (kernel_map == NULL || + (kernel_map->dso->hit && + (kernel_kmap->ref_reloc_sym == NULL || + kernel_kmap->ref_reloc_sym->addr == 0))) { + const char *desc = + "As no suitable kallsyms nor vmlinux was found, kernel samples\n" + "can't be resolved."; + + if (kernel_map) { + const struct dso *kdso = kernel_map->dso; + if (!RB_EMPTY_ROOT(&kdso->symbols[MAP__FUNCTION])) { + desc = "If some relocation was applied (e.g. " + "kexec) symbols may be misresolved."; + } + } + + ui__warning( +"Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n" +"Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n" +"Samples in kernel modules can't be resolved as well.\n\n", + desc); + } +} + static int __cmd_report(struct report *rep) { int ret = -EINVAL; u64 nr_samples; struct perf_session *session = rep->session; struct perf_evsel *pos; - struct map *kernel_map; - struct kmap *kernel_kmap; const char *help = "For a higher level overview, try: perf report --sort comm,dso"; struct ui_progress prog; struct perf_data_file *file = session->file; @@ -444,30 +471,7 @@ static int __cmd_report(struct report *rep) if (ret) return ret; - kernel_map = session->machines.host.vmlinux_maps[MAP__FUNCTION]; - kernel_kmap = map__kmap(kernel_map); - if (kernel_map == NULL || - (kernel_map->dso->hit && - (kernel_kmap->ref_reloc_sym == NULL || - kernel_kmap->ref_reloc_sym->addr == 0))) { - const char *desc = - "As no suitable kallsyms nor vmlinux was found, kernel samples\n" - "can't be resolved."; - - if (kernel_map) { - const struct dso *kdso = kernel_map->dso; - if (!RB_EMPTY_ROOT(&kdso->symbols[MAP__FUNCTION])) { - desc = "If some relocation was applied (e.g. " - "kexec) symbols may be misresolved."; - } - } - - ui__warning( -"Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n" -"Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n" -"Samples in kernel modules can't be resolved as well.\n\n", - desc); - } + report__warn_kptr_restrict(rep); if (use_browser == 0) { if (verbose > 3)