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| author | Paolo Bonzini <pbonzini@redhat.com> | 2016-12-01 09:58:02 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2016-12-22 16:00:24 +0100 |
| commit | 8caa05d8891d0a09dc4c00908c24c6ddfd872bbe (patch) | |
| tree | 477839f7d54f8b6657981cf242c622595ce9430f /cpus.c | |
| parent | e7a9f35321a048922233c90f32e91d033faac176 (diff) | |
| download | qemu-8caa05d8891d0a09dc4c00908c24c6ddfd872bbe.zip qemu-8caa05d8891d0a09dc4c00908c24c6ddfd872bbe.tar.gz qemu-8caa05d8891d0a09dc4c00908c24c6ddfd872bbe.tar.bz2 | |
qemu-timer: check active_timers outside lock/event
This avoids taking the active_timers_lock or resetting/setting the
timers_done_ev if there are no active timers. This removes a small
(2-3%) source of overhead for dataplane. The list is then checked
again inside the lock, or a NULL pointer could be dereferenced.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'cpus.c')
0 files changed, 0 insertions, 0 deletions