* [PATCH] printk: Mark printk_once test variable __read_mostly
@ 2013-10-06 19:32 Joe Perches
0 siblings, 0 replies; only message in thread
From: Joe Perches @ 2013-10-06 19:32 UTC (permalink / raw)
To: Andrew Morton; +Cc: LKML
It's only set once so mark it __read_mostly.
Neaten the alignment so it matches the rest of the
pr_<level>_once #defines too.
Signed-off-by: Joe Perches <joe@perches.com>
---
include/linux/printk.h | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/include/linux/printk.h b/include/linux/printk.h
index e6131a78..abd42dd 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -251,17 +251,17 @@ extern asmlinkage void dump_stack(void) __cold;
*/
#ifdef CONFIG_PRINTK
-#define printk_once(fmt, ...) \
-({ \
- static bool __print_once; \
- \
- if (!__print_once) { \
- __print_once = true; \
- printk(fmt, ##__VA_ARGS__); \
- } \
+#define printk_once(fmt, ...) \
+({ \
+ static bool __print_once __read_mostly; \
+ \
+ if (!__print_once) { \
+ __print_once = true; \
+ printk(fmt, ##__VA_ARGS__); \
+ } \
})
#else
-#define printk_once(fmt, ...) \
+#define printk_once(fmt, ...) \
no_printk(fmt, ##__VA_ARGS__)
#endif
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2013-10-06 19:32 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2013-10-06 19:32 [PATCH] printk: Mark printk_once test variable __read_mostly Joe Perches
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®