Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753413Ab2HMSiE (ORCPT ); Mon, 13 Aug 2012 14:38:04 -0400 Received: from merlin.infradead.org ([205.233.59.134]:49411 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752685Ab2HMShl (ORCPT ); Mon, 13 Aug 2012 14:37:41 -0400 From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Andi Kleen , Pekka Enberg , Arnaldo Carvalho de Melo Subject: [PATCH 38/38] perf symbols: Add description of JIT interface Date: Mon, 13 Aug 2012 15:37:19 -0300 Message-Id: <1344883039-13495-39-git-send-email-acme@infradead.org> X-Mailer: git-send-email 1.7.9.2.358.g22243 In-Reply-To: <1344883039-13495-1-git-send-email-acme@infradead.org> References: <1344883039-13495-1-git-send-email-acme@infradead.org> Content-Type: text/plain; charset="UTF-8" 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 Content-Length: 1573 Lines: 44 From: Andi Kleen 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(-) create mode 100644 tools/perf/Documentation/jit-interface.txt 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. -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/