ia64: 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: NTejun Heo <tj@kernel.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

arch/ia64/kernel/topology.c

@@ -217,14 +217,12 @@ static ssize_t show_number_of_sets(struct cache_info *this_leaf, char *buf)
 
 static ssize_t show_shared_cpu_map(struct cache_info *this_leaf, char *buf)
 {
-	ssize_t	len;
 	cpumask_t shared_cpu_map;
 
 	cpumask_and(&shared_cpu_map,
 				&this_leaf->shared_cpu_map, cpu_online_mask);
-	len = cpumask_scnprintf(buf, NR_CPUS+1, &shared_cpu_map);
-	len += sprintf(buf+len, "\n");
-	return len;
+	return scnprintf(buf, PAGE_SIZE, "%*pb\n",
+			 cpumask_pr_args(&shared_cpu_map));
 }
 
 static ssize_t show_type(struct cache_info *this_leaf, char *buf)