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Commit 807de073 authored by Tejun Heo's avatar Tejun Heo Committed by Linus Torvalds
Browse files

percpu: 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: default avatarTejun Heo <tj@kernel.org>
Cc: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent ffda22c1

mm/percpu.c

+2 −4
Original line number Diff line number Diff line
@@ -1528,7 +1528,6 @@ static void pcpu_dump_alloc_info(const char *lvl, 
int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,

				  void *base_addr)

{

	static char cpus_buf[4096] __initdata;

	static int smap[PERCPU_DYNAMIC_EARLY_SLOTS] __initdata;

	static int dmap[PERCPU_DYNAMIC_EARLY_SLOTS] __initdata;

	size_t dyn_size = ai->dyn_size;
@@ -1541,12 +1540,11 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai, 
	int *unit_map;

	int group, unit, i;



	cpumask_scnprintf(cpus_buf, sizeof(cpus_buf), cpu_possible_mask);



#define PCPU_SETUP_BUG_ON(cond)	do {					\

	if (unlikely(cond)) {						\

		pr_emerg("PERCPU: failed to initialize, %s", #cond);	\

		pr_emerg("PERCPU: cpu_possible_mask=%s\n", cpus_buf);	\

		pr_emerg("PERCPU: cpu_possible_mask=%*pb\n",		\

			 cpumask_pr_args(cpu_possible_mask));		\

		pcpu_dump_alloc_info(KERN_EMERG, ai);			\

		BUG();							\

	}								\