Commit 4497da6f authored Feb 13, 2015 by Tejun Heo Committed by Linus Torvalds Feb 13, 2015

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



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: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 9e763e0f

kernel/padata.c

+3 −8

Original line number	Diff line number	Diff line
		@@ -917,15 +917,10 @@ static ssize_t show_cpumask(struct padata_instance *pinst,
		else
		cpumask = pinst->cpumask.pcpu;

		len = bitmap_scnprintf(buf, PAGE_SIZE, cpumask_bits(cpumask),
		nr_cpu_ids);
		if (PAGE_SIZE - len < 2)
		len = -EINVAL;
		else
		len += sprintf(buf + len, "\n");

		len = snprintf(buf, PAGE_SIZE, "%*pb\n",
		nr_cpu_ids, cpumask_bits(cpumask));
		mutex_unlock(&pinst->lock);
		return len;
		return len < PAGE_SIZE ? len : -EINVAL;
		}

		static ssize_t store_cpumask(struct padata_instance *pinst,