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| author | Peter Maydell <peter.maydell@linaro.org> | 2020-01-20 15:11:40 +0000 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2020-01-30 21:33:50 +0000 |
| commit | 1aa6430dbee5237db8831f63b17b5c7c321098d0 (patch) | |
| tree | e959893eb5261bc31fd85c97a48b9fd7a61c7d36 /qemu-options.h | |
| parent | 70149da7641815e08b985aa96ec15fe6ba927f12 (diff) | |
| download | qemu-1aa6430dbee5237db8831f63b17b5c7c321098d0.zip qemu-1aa6430dbee5237db8831f63b17b5c7c321098d0.tar.gz qemu-1aa6430dbee5237db8831f63b17b5c7c321098d0.tar.bz2 | |
docs/devel/tracing.txt: Recommend only trace_event_get_state_backends()
Instead of recommending checking the TRACE_FOO_ENABLED macro to
skip expensive computations needed only for tracing, recommend
only using trace_event_get_state_backends(). This works for both
compile-time and run-time disabling of events, and has no extra
performance impact if the event is compile-time disabled.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200120151142.18954-2-peter.maydell@linaro.org
Message-Id: <20200120151142.18954-2-peter.maydell@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'qemu-options.h')
0 files changed, 0 insertions, 0 deletions