From 5b808275f3bbe8cc95bb9301f4d5a41331d0e0e6 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Llu=C3=ADs=20Vilanova?= Date: Tue, 27 May 2014 15:02:14 +0200 Subject: trace: Multi-backend tracing MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Adds support to compile QEMU with multiple tracing backends at the same time. For example, you can compile QEMU with: $ ./configure --enable-trace-backends=ftrace,dtrace Where 'ftrace' can be handy for having an in-flight record of events, and 'dtrace' can be later used to extract more information from the system. This patch allows having both available without recompiling QEMU. Signed-off-by: Lluís Vilanova Signed-off-by: Stefan Hajnoczi --- docs/tracing.txt | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'docs') diff --git a/docs/tracing.txt b/docs/tracing.txt index bf2e15ce30..c6ab1c11c1 100644 --- a/docs/tracing.txt +++ b/docs/tracing.txt @@ -9,7 +9,7 @@ for debugging, profiling, and observing execution. 1. Build with the 'simple' trace backend: - ./configure --enable-trace-backend=simple + ./configure --enable-trace-backends=simple make 2. Create a file with the events you want to trace: @@ -142,7 +142,7 @@ script. The trace backend is chosen at configure time and only one trace backend can be built into the binary: - ./configure --trace-backend=simple + ./configure --trace-backends=simple For a list of supported trace backends, try ./configure --help or see below. -- cgit v1.2.1