claw/lcs/netiucv: check s390dbf level before sprints
additional check of s390dbf level results in better performance
if the default low debugging level is active.
Signed-off-by: Peter Tiedemann <ptiedem@de.ibm.com>
Signed-off-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/s390/net/lcs.h b/drivers/s390/net/lcs.h
index 8976fb0..d58fea5 100644
--- a/drivers/s390/net/lcs.h
+++ b/drivers/s390/net/lcs.h
@@ -16,11 +16,19 @@
debug_event(lcs_dbf_##name,level,(void*)(addr),len); \
} while (0)
+/* Allow to sort out low debug levels early to avoid wasted sprints */
+static inline int lcs_dbf_passes(debug_info_t *dbf_grp, int level)
+{
+ return (level <= dbf_grp->level);
+}
+
#define LCS_DBF_TEXT_(level,name,text...) \
-do { \
- sprintf(debug_buffer, text); \
- debug_text_event(lcs_dbf_##name,level, debug_buffer);\
-} while (0)
+ do { \
+ if (lcs_dbf_passes(lcs_dbf_##name, level)) { \
+ sprintf(debug_buffer, text); \
+ debug_text_event(lcs_dbf_##name, level, debug_buffer); \
+ } \
+ } while (0)
/**
* sysfs related stuff