Commit 660e5ec0 authored Feb 13, 2015 by Tejun Heo Committed by Linus Torvalds Feb 13, 2015

arm: 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: Tejun Heo <tj@kernel.org>
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 62518994

drivers/bus/arm-cci.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -806,8 +806,8 @@ static int cci_pmu_event_init(struct perf_event *event)
		static ssize_t pmu_attr_cpumask_show(struct device *dev,
		struct device_attribute attr, char buf)
		{
		int n = cpulist_scnprintf(buf, PAGE_SIZE - 2, &pmu->cpus);

		int n = scnprintf(buf, PAGE_SIZE - 1, "%*pbl",
		cpumask_pr_args(&pmu->cpus));
		buf[n++] = '\n';
		buf[n] = '\0';
		return n;