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hw/display/qxl.c: Use trace_event_get_state_backends()

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The preferred way to test whether a trace event is enabled is to
use trace_event_get_state_backends(), because this will give the
correct answer (allowing expensive computations to be skipped)
whether the trace event is compile-time or run-time disabled.
Convert the old-style direct use of TRACE_FOO_ENABLED.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20200120151142.18954-4-peter.maydell@linaro.org
Message-Id: <20200120151142.18954-4-peter.maydell@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Peter Maydell 2020-01-20 15:11:42 +00:00 committed by Stefan Hajnoczi
parent 380ea843bd
commit d4aceb2eb7
1 changed files with 1 additions and 1 deletions
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hw/display/qxl.c
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@ -1764,7 +1764,7 @@ async_common:
qxl_set_mode(d, val, 0);
break;
case QXL_IO_LOG:
if (TRACE_QXL_IO_LOG_ENABLED || d->guestdebug) {
if (trace_event_get_state_backends(TRACE_QXL_IO_LOG) || d->guestdebug) {
/* We cannot trust the guest to NUL terminate d->ram->log_buf */
char *log_buf = g_strndup((const char *)d->ram->log_buf,
sizeof(d->ram->log_buf));