From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753617AbdK1PDT (ORCPT ); Tue, 28 Nov 2017 10:03:19 -0500 Received: from mail.kernel.org ([198.145.29.99]:45296 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753588AbdK1PDQ (ORCPT ); Tue, 28 Nov 2017 10:03:16 -0500 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A89542133D 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 Cc: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Arnaldo Carvalho de Melo , Adrian Hunter , David Ahern , Jiri Olsa , Linus Torvalds , Namhyung Kim , Wang Nan Subject: [PATCH 15/30] perf top: Ignore kptr_restrict when not sampling the kernel Date: Tue, 28 Nov 2017 12:02:05 -0300 Message-Id: <20171128150220.5064-16-acme@kernel.org> X-Mailer: git-send-email 2.13.6 In-Reply-To: <20171128150220.5064-1-acme@kernel.org> References: <20171128150220.5064-1-acme@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Arnaldo Carvalho de Melo If all events have attr.exclude_kernel set, no need to look at kptr_restrict. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Linus Torvalds Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-yegpzg5bf2im69g0tfizqaqz@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-top.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 477a8699f0b5..1b01c277bab9 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -732,14 +732,16 @@ static void perf_event__process_sample(struct perf_tool *tool, if (!machine->kptr_restrict_warned && symbol_conf.kptr_restrict && al.cpumode == PERF_RECORD_MISC_KERNEL) { - ui__warning( + if (!perf_evlist__exclude_kernel(top->session->evlist)) { + ui__warning( "Kernel address maps (/proc/{kallsyms,modules}) are restricted.\n\n" "Check /proc/sys/kernel/kptr_restrict.\n\n" "Kernel%s samples will not be resolved.\n", al.map && !RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION]) ? " modules" : ""); - if (use_browser <= 0) - sleep(5); + if (use_browser <= 0) + sleep(5); + } machine->kptr_restrict_warned = true; } -- 2.13.6