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percpu: 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: Christoph Lameter <cl@linux-foundation.org>
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 14:37:34 -08:00 • committed by Linus Torvalds
commit 807de073bb
1 changed files with 2 additions and 4 deletions
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6
mm/percpu.c
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@ -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, int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
void *base_addr) void *base_addr)
{ {
static char cpus_buf[4096] __initdata;
static int smap[PERCPU_DYNAMIC_EARLY_SLOTS] __initdata; static int smap[PERCPU_DYNAMIC_EARLY_SLOTS] __initdata;
static int dmap[PERCPU_DYNAMIC_EARLY_SLOTS] __initdata; static int dmap[PERCPU_DYNAMIC_EARLY_SLOTS] __initdata;
size_t dyn_size = ai->dyn_size; 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 *unit_map;
int group, unit, i; int group, unit, i;
cpumask_scnprintf(cpus_buf, sizeof(cpus_buf), cpu_possible_mask);
#define PCPU_SETUP_BUG_ON(cond) do { \ #define PCPU_SETUP_BUG_ON(cond) do { \
if (unlikely(cond)) { \ if (unlikely(cond)) { \
pr_emerg("PERCPU: failed to initialize, %s", #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); \ pcpu_dump_alloc_info(KERN_EMERG, ai); \
BUG(); \ BUG(); \
} \ } \