Two of the three prink_deferred uses are really printk_once style
uses, so add a printk_once_deferred macro to simplify those call
sites.
Cc: Jan Kara <j...@suse.cz>
Cc: Peter Zijlstra <pet...@infradead.org>
Cc: Jiri Bohac <jbo...@suse.cz>
Cc: Thomas Gleixner <t...@linutronix.de>
Cc: Ingo Molnar <mi...@redhat.com>
Cc: Andrew Morton <a...@linux-foundation.org>
Cc: Steven Rostedt <rost...@goodmis.org>
Signed-off-by: John Stultz <john.stu...@linaro.org>
---
include/linux/printk.h | 11 +++++++++++
kernel/sched/deadline.c | 7 +------
kernel/sched/rt.c | 8 +-------
3 files changed, 13 insertions(+), 13 deletions(-)
diff --git a/include/linux/printk.h b/include/linux/printk.h
index 7847301..bd21234 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -266,9 +266,20 @@ extern asmlinkage void dump_stack(void) __cold;
printk(fmt, ##__VA_ARGS__); \
} \
})
+#define printk_once_deferred(fmt, ...) \
+({ \
+ static bool __print_once __read_mostly; \
+ \
+ if (!__print_once) { \
+ __print_once = true; \
+ printk_deferred(fmt, ##__VA_ARGS__); \
+ } \
+})
#else
#define printk_once(fmt, ...) \
no_printk(fmt, ##__VA_ARGS__)
+#define printk_once_deferred(fmt, ...) \
+ no_printk(fmt, ##__VA_ARGS__)
#endif
#define pr_emerg_once(fmt, ...) \
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index 657ed68..3ec96bd 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -348,12 +348,7 @@ static void replenish_dl_entity(struct sched_dl_entity
*dl_se,
* entity.
*/
if (dl_time_before(dl_se->deadline, rq_clock(rq))) {
- static bool lag_once = false;
-
- if (!lag_once) {
- lag_once = true;
- printk_deferred("sched: DL replenish lagged to much\n");
- }
+ printk_once_deferred("sched: DL replenish lagged to much\n");
dl_se->deadline = rq_clock(rq) + pi_se->dl_deadline;
dl_se->runtime = pi_se->dl_runtime;
}
diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index e7dc728..fd6e9ca 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -890,14 +890,8 @@ static int sched_rt_runtime_exceeded(struct rt_rq *rt_rq)
* but accrue some time due to boosting.
*/
if (likely(rt_b->rt_runtime)) {
- static bool once = false;
-
rt_rq->rt_throttled = 1;
-
- if (!once) {
- once = true;
- printk_deferred("sched: RT throttling
activated\n");
- }
+ printk_once_deferred("sched: RT throttling
activated\n");
} else {
/*
* In case we did anyway, make it go away,
--
1.9.1
--
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