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| author | Tejun Heo <tj@kernel.org> | 2015-02-13 14:38:05 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-13 21:21:38 -0800 |
| commit | 4497da6f950951b8819cd827bbebb8f214e8ecbe (patch) | |
| tree | f5a7949c391b28d80d0aff33eb16ef74872ee2d2 /kernel/padata.c | |
| parent | 9e763e0f4f94d5f9ac8928867a4399ec3b3c7e33 (diff) | |
| download | linux-4497da6f950951b8819cd827bbebb8f214e8ecbe.tar.gz linux-4497da6f950951b8819cd827bbebb8f214e8ecbe.tar.bz2 linux-4497da6f950951b8819cd827bbebb8f214e8ecbe.zip | |
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>
Diffstat (limited to 'kernel/padata.c')
| -rw-r--r-- | kernel/padata.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/kernel/padata.c b/kernel/padata.c index 161402f0b517..b38bea9c466a 100644 --- a/kernel/padata.c +++ b/kernel/padata.c @@ -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, |