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x86: 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.

* Unnecessary buffer size calculation and condition on the lenght
  removed from intel_cacheinfo.c::show_shared_cpu_map_func().

* uv_nmi_nr_cpus_pr() got overly smart and implemented "..."
  abbreviation if the output stretched over the predefined 1024 byte
  buffer.  Replaced with plain printk.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Mike Travis <travis@sgi.com>
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 14:37:12 -08:00
committed by Linus Torvalds
parent 839b268033
commit bf58b4879c
3 changed files with 20 additions and 35 deletions
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24
arch/x86/kernel/cpu/intel_cacheinfo.c
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@@ -952,20 +952,18 @@ static ssize_t show_size(struct _cpuid4_info *this_leaf, char *buf,
static ssize_t show_shared_cpu_map_func(struct _cpuid4_info *this_leaf,
int type, char *buf)
{
ptrdiff_t len = PTR_ALIGN(buf + PAGE_SIZE - 1, PAGE_SIZE) - buf;
int n = 0;
const struct cpumask *mask = to_cpumask(this_leaf->shared_cpu_map);
int ret;
if (len > 1) {
const struct cpumask *mask;
mask = to_cpumask(this_leaf->shared_cpu_map);
n = type ?
cpulist_scnprintf(buf, len-2, mask) :
cpumask_scnprintf(buf, len-2, mask);
buf[n++] = '\n';
buf[n] = '\0';
}
return n;
if (type)
ret = scnprintf(buf, PAGE_SIZE - 1, "%*pbl",
cpumask_pr_args(mask));
else
ret = scnprintf(buf, PAGE_SIZE - 1, "%*pb",
cpumask_pr_args(mask));
buf[ret++] = '\n';
buf[ret] = '\0';
return ret;
}
static inline ssize_t show_shared_cpu_map(struct _cpuid4_info *leaf, char *buf,