After learning we'll need some sort of deferred printk functionality
in the timekeeping core, Peter suggested we rename the printk_sched
function so it can be reused by needed subsystems.
This only changes the function name and name of the associated buffer.
No logic changes.
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>
Signed-off-by: John Stultz <john.stu...@linaro.org>
---
include/linux/printk.h | 6 +++---
kernel/printk/printk.c | 8 ++++----
kernel/sched/core.c | 2 +-
kernel/sched/deadline.c | 2 +-
kernel/sched/rt.c | 2 +-
5 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/include/linux/printk.h b/include/linux/printk.h
index 8752f75..7847301 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -128,9 +128,9 @@ asmlinkage __printf(1, 2) __cold
int printk(const char *fmt, ...);
/*
- * Special printk facility for scheduler use only, _DO_NOT_USE_ !
+ * Special printk facility for scheduler/timekeeping use only, _DO_NOT_USE_ !
*/
-__printf(1, 2) __cold int printk_sched(const char *fmt, ...);
+__printf(1, 2) __cold int printk_deferred(const char *fmt, ...);
/*
* Please don't use printk_ratelimit(), because it shares ratelimiting state
@@ -165,7 +165,7 @@ int printk(const char *s, ...)
return 0;
}
static inline __printf(1, 2) __cold
-int printk_sched(const char *s, ...)
+int printk_deferred(const char *s, ...)
{
return 0;
}
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index a45b509..a9763e4 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -2443,14 +2443,14 @@ late_initcall(printk_late_init);
#define PRINTK_PENDING_SCHED 0x02
static DEFINE_PER_CPU(int, printk_pending);
-static DEFINE_PER_CPU(char [PRINTK_BUF_SIZE], printk_sched_buf);
+static DEFINE_PER_CPU(char [PRINTK_BUF_SIZE], printk_deferred_buf);
static void wake_up_klogd_work_func(struct irq_work *irq_work)
{
int pending = __this_cpu_xchg(printk_pending, 0);
if (pending & PRINTK_PENDING_SCHED) {
- char *buf = __get_cpu_var(printk_sched_buf);
+ char *buf = __get_cpu_var(printk_deferred_buf);
pr_warn("[sched_delayed] %s", buf);
}
@@ -2473,7 +2473,7 @@ void wake_up_klogd(void)
preempt_enable();
}
-int printk_sched(const char *fmt, ...)
+int printk_deferred(const char *fmt, ...)
{
unsigned long flags;
va_list args;
@@ -2481,7 +2481,7 @@ int printk_sched(const char *fmt, ...)
int r;
local_irq_save(flags);
- buf = __get_cpu_var(printk_sched_buf);
+ buf = __get_cpu_var(printk_deferred_buf);
va_start(args, fmt);
r = vsnprintf(buf, PRINTK_BUF_SIZE, fmt, args);
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 268a45e..423704c 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -1320,7 +1320,7 @@ out:
* leave kernel.
*/
if (p->mm && printk_ratelimit()) {
- printk_sched("process %d (%s) no longer affine to
cpu%d\n",
+ printk_deferred("process %d (%s) no longer affine to
cpu%d\n",
task_pid_nr(p), p->comm, cpu);
}
}
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index b080957..657ed68 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -352,7 +352,7 @@ static void replenish_dl_entity(struct sched_dl_entity
*dl_se,
if (!lag_once) {
lag_once = true;
- printk_sched("sched: DL replenish lagged to much\n");
+ printk_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 bd2267a..c19b3cc 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -857,7 +857,7 @@ static int sched_rt_runtime_exceeded(struct rt_rq *rt_rq)
if (!once) {
once = true;
- printk_sched("sched: RT throttling
activated\n");
+ printk_deferred("sched: RT throttling
activated\n");
}
} else {
/*
--
1.8.3.2
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
