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Commit f799b1a7 authored by Tejun Heo's avatar Tejun Heo Committed by Linus Torvalds
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drivers/base: 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.

* Line termination only requires one extra space at the end of the
  buffer.  Use PAGE_SIZE - 1 instead of PAGE_SIZE - 2 when formatting.

Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 125918db

drivers/base/cpu.c

+1 −1
Original line number Diff line number Diff line
@@ -245,7 +245,7 @@ static ssize_t print_cpus_offline(struct device *dev, 
	if (!alloc_cpumask_var(&offline, GFP_KERNEL))

		return -ENOMEM;

	cpumask_andnot(offline, cpu_possible_mask, cpu_online_mask);

	n = cpulist_scnprintf(buf, len, offline);

	n = scnprintf(buf, len, "%*pbl", cpumask_pr_args(offline));

	free_cpumask_var(offline);



	/* display offline cpus >= nr_cpu_ids */

drivers/base/node.c

+2 −1
Original line number Diff line number Diff line
@@ -605,7 +605,8 @@ static ssize_t print_nodes_state(enum node_states state, char *buf) 
{

	int n;



	n = nodelist_scnprintf(buf, PAGE_SIZE-2, node_states[state]);

	n = scnprintf(buf, PAGE_SIZE - 1, "%*pbl",

		      nodemask_pr_args(&node_states[state]));

	buf[n++] = '\n';

	buf[n] = '\0';

	return n;