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| author | Lluís Vilanova <vilanova@ac.upc.edu> | 2014-05-27 15:02:14 +0200 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2014-06-09 15:43:40 +0200 |
| commit | 5b808275f3bbe8cc95bb9301f4d5a41331d0e0e6 (patch) | |
| tree | d5611a010851864336448529088cd94a9afcf83a /docs | |
| parent | 82432638ebeedda8a2e18838b6fbef4b14a94f31 (diff) | |
| download | qemu-5b808275f3bbe8cc95bb9301f4d5a41331d0e0e6.tar.gz | |
trace: Multi-backend tracing
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 <vilanova@ac.upc.edu>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/tracing.txt | 4 |
1 files changed, 2 insertions, 2 deletions
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. |