From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757942Ab2HUQOE (ORCPT ); Tue, 21 Aug 2012 12:14:04 -0400 Received: from terminus.zytor.com ([198.137.202.10]:60810 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756685Ab2HUQN5 (ORCPT ); Tue, 21 Aug 2012 12:13:57 -0400 Date: Tue, 21 Aug 2012 09:11:40 -0700 From: tip-bot for Andi Kleen Message-ID: Cc: acme@redhat.com, linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@kernel.org, penberg@cs.helsinki.fi, ak@linux.intel.com, tglx@linutronix.de Reply-To: mingo@kernel.org, hpa@zytor.com, linux-kernel@vger.kernel.org, acme@redhat.com, penberg@cs.helsinki.fi, ak@linux.intel.com, tglx@linutronix.de In-Reply-To: <1344526260-18721-1-git-send-email-andi@firstfloor.org> References: <1344526260-18721-1-git-send-email-andi@firstfloor.org> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] perf symbols: Add description of JIT interface Git-Commit-ID: 0fe7d7e9761ec7e23350b5543ddac470bb3cde1e 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-4.2.6 (terminus.zytor.com [127.0.0.1]); Tue, 21 Aug 2012 09:11:47 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 0fe7d7e9761ec7e23350b5543ddac470bb3cde1e Gitweb: http://git.kernel.org/tip/0fe7d7e9761ec7e23350b5543ddac470bb3cde1e Author: Andi Kleen AuthorDate: Thu, 9 Aug 2012 08:31:00 -0700 Committer: Arnaldo Carvalho de Melo CommitDate: Mon, 13 Aug 2012 14:55:02 -0300 perf symbols: Add description of JIT interface Add a description of the JIT interface in the perf symbol resolution code. I reverse engineered the format from the source. Signed-off-by: Andi Kleen Acked-by: Pekka Enberg Cc: Pekka Enberg Link: http://lkml.kernel.org/r/1344526260-18721-1-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/jit-interface.txt | 15 +++++++++++++++ 1 files changed, 15 insertions(+), 0 deletions(-) diff --git a/tools/perf/Documentation/jit-interface.txt b/tools/perf/Documentation/jit-interface.txt new file mode 100644 index 0000000..a8656f5 --- /dev/null +++ b/tools/perf/Documentation/jit-interface.txt @@ -0,0 +1,15 @@ +perf supports a simple JIT interface to resolve symbols for dynamic code generated +by a JIT. + +The JIT has to write a /tmp/perf-%d.map (%d = pid of process) file + +This is a text file. + +Each line has the following format, fields separated with spaces: + +START SIZE symbolname + +START and SIZE are hex numbers without 0x. +symbolname is the rest of the line, so it could contain special characters. + +The ownership of the file has to match the process.