From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756599AbaIWO7S (ORCPT ); Tue, 23 Sep 2014 10:59:18 -0400 Received: from mail-we0-f178.google.com ([74.125.82.178]:53820 "EHLO mail-we0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756114AbaIWO7M (ORCPT ); Tue, 23 Sep 2014 10:59:12 -0400 From: Stephane Eranian To: linux-kernel@vger.kernel.org Cc: peterz@infradead.org, mingo@elte.hu, ak@linux.intel.com, jolsa@redhat.com, acme@redhat.com, cebbert.lkml@gmail.com Subject: [PATCH v6 5/6] perf record: add new -I option to sample interrupted machine state Date: Tue, 23 Sep 2014 16:57:48 +0200 Message-Id: <1411484269-32311-6-git-send-email-eranian@google.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1411484269-32311-1-git-send-email-eranian@google.com> References: <1411484269-32311-1-git-send-email-eranian@google.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add -I/--intr-regs option to capture machine state registers at interrupt. Add the corresponding man page description Signed-off-by: Stephane Eranian --- tools/perf/Documentation/perf-record.txt | 6 ++++++ tools/perf/builtin-record.c | 2 ++ 2 files changed, 8 insertions(+) diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index d460049..1a36259 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -214,6 +214,12 @@ if combined with -a or -C options. After starting the program, wait msecs before measuring. This is useful to filter out the startup phase of the program, which is often very different. +-I:: +--intr-regs:: +Capture machine state (registers) at interrupt, i.e., on counter overflows for +each sample. List of captured registers depends on the architecture. This option +is off by default. + SEE ALSO -------- linkperf:perf-stat[1], linkperf:perf-list[1] diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index a1b0403..cd58f01 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -883,6 +883,8 @@ const struct option record_options[] = { "sample transaction flags (special events only)"), OPT_BOOLEAN(0, "per-thread", &record.opts.target.per_thread, "use per-thread mmaps"), + OPT_BOOLEAN('I', "intr-regs", &record.opts.sample_intr_regs, + "Sample machine registers on interrupt"), OPT_END() }; -- 1.7.9.5