Commit d4aceb2e authored by Peter Maydell's avatar Peter Maydell Committed by Stefan Hajnoczi
Browse files

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



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: default avatarPeter Maydell <peter.maydell@linaro.org>
Acked-by: default avatarGerd 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: default avatarStefan Hajnoczi <stefanha@redhat.com>
parent 380ea843

hw/display/qxl.c

+1 −1
Original line number Diff line number Diff line
@@ -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));