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time: use %*pb[l] to print bitmaps including cpumasks and nodemasks

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printk and friends can now format bitmaps using '%*pb[l]'.  cpumask
and nodemask also provide cpumask_pr_args() and nodemask_pr_args()
respectively which can be used to generate the two printf arguments
necessary to format the specified cpu/nodemask.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Tejun Heo 2015-02-13 14:37:31 -08:00 • committed by Linus Torvalds
parent 333470ee46
commit ffda22c1f3
1 changed files with 2 additions and 9 deletions
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11
kernel/time/tick-sched.c
View file

@ -326,13 +326,6 @@ static int tick_nohz_cpu_down_callback(struct notifier_block *nfb,
return NOTIFY_OK;
}
/*
* Worst case string length in chunks of CPU range seems 2 steps
* separations: 0,2,4,6,...
* This is NR_CPUS + sizeof('\0')
*/
static char __initdata nohz_full_buf[NR_CPUS + 1];
static int tick_nohz_init_all(void)
{
int err = -1;
@ -393,8 +386,8 @@ void __init tick_nohz_init(void)
context_tracking_cpu_set(cpu);
cpu_notifier(tick_nohz_cpu_down_callback, 0);
cpulist_scnprintf(nohz_full_buf, sizeof(nohz_full_buf), tick_nohz_full_mask);
pr_info("NO_HZ: Full dynticks CPUs: %s.\n", nohz_full_buf);
pr_info("NO_HZ: Full dynticks CPUs: %*pbl.\n",
cpumask_pr_args(tick_nohz_full_mask));
}
#endif