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qemu-log: Avoid function call for disabled qemu_log_mask logging

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Make qemu_log_mask() a macro which only calls the function to
do the actual work if the logging is enabled. This avoids making
a function call in possible fast paths where logging is disabled.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Peter Maydell 2016-03-15 19:12:03 +01:00 • committed by Paolo Bonzini
parent 541957361e
commit 7ee606230e
2 changed files with 10 additions and 14 deletions
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11
util/log.c
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@ -38,17 +38,6 @@ void qemu_log(const char *fmt, ...)
va_end(ap);
}
void qemu_log_mask(int mask, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
if ((qemu_loglevel & mask) && qemu_logfile) {
vfprintf(qemu_logfile, fmt, ap);
}
va_end(ap);
}
/* enable or disable low levels log */
void do_qemu_set_log(int log_flags, bool use_own_buffers)
{