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| author | Denis V. Lunev <den@openvz.org> | 2017-07-25 17:39:23 +0300 |
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| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2017-08-01 12:13:07 +0100 |
| commit | bd6952a391b6f2083d6597386f457f30044e32a3 (patch) | |
| tree | ce8ca13de13a97932e62489c79a949955ef1bb51 /hw/timer/altera_timer.c | |
| parent | 8908eb1a4aaf6b6573de3c44dfdaac6049061c02 (diff) | |
| download | focaccia-qemu-bd6952a391b6f2083d6597386f457f30044e32a3.tar.gz focaccia-qemu-bd6952a391b6f2083d6597386f457f30044e32a3.zip | |
monitor: Reduce handle_qmp_command() tracing overhead
We are malloc'ing a QString and spending CPU cycles on converting a QObject to string, just for the sake of sticking the string in the trace message. Wasted when we aren't tracing. Avoid that. [Commit message and description suggested by Markus Armbruster to provide more detail about the rationale for this patch. Use trace_event_get_state_backends() instead of trace_event_get_state() to honor DTrace/UST backend dstates. --Stefan] Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 20170725143923.11241-1-den@openvz.org CC: Stefan Hajnoczi <stefanha@redhat.com> CC: Lluís Vilanova <vilanova@ac.upc.edu> CC: Dr. David Alan Gilbert <dgilbert@redhat.com> CC: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'hw/timer/altera_timer.c')
0 files changed, 0 insertions, 0 deletions