cpumask: use new cpus_scnprintf function

  * Cleaned up references to cpumask_scnprintf() and added new
    cpulist_scnprintf() interfaces where appropriate.

  * Fix some small bugs (or code efficiency improvments) for various uses
    of cpumask_scnprintf.

  * Clean up some checkpatch errors.

Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 6 insertions, 2 deletions

diff --git a/kernel/sched_stats.h b/kernel/sched_stats.h
index 5b32433e7ee5..5bae2e0c3ff2 100644
--- a/kernel/sched_stats.h
+++ b/kernel/sched_stats.h
@@ -9,6 +9,11 @@
 static int show_schedstat(struct seq_file *seq, void *v)
 {
         int cpu;
+        int mask_len = NR_CPUS/32 * 9;
+        char *mask_str = kmalloc(mask_len, GFP_KERNEL);
+
+        if (mask_str == NULL)
+                return -ENOMEM;
 
         seq_printf(seq, "version %d\n", SCHEDSTAT_VERSION);
         seq_printf(seq, "timestamp %lu\n", jiffies);
@@ -36,9 +41,8 @@ static int show_schedstat(struct seq_file *seq, void *v)
                 preempt_disable();
                 for_each_domain(cpu, sd) {
                         enum cpu_idle_type itype;
-                        char mask_str[NR_CPUS];
 
-                        cpumask_scnprintf(mask_str, NR_CPUS, sd->span);
+                        cpumask_scnprintf(mask_str, mask_len, sd->span);
                         seq_printf(seq, "domain%d %s", dcount++, mask_str);
                         for (itype = CPU_IDLE; itype < CPU_MAX_IDLE_TYPES;
                                         itype++) {