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authorTejun Heo <tj@kernel.org>2015-02-13 14:37:56 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-13 21:21:38 -0800
commitf799b1a7fbd24cf0dc4fa33818c172bd70571bd1 (patch)
tree650574cd56b463d1b7080f8a4a38f62c93ccff9d /drivers
parent125918dbd836d19b5dccc2690388b29e575f91a4 (diff)
drivers/base: 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. * Line termination only requires one extra space at the end of the buffer. Use PAGE_SIZE - 1 instead of PAGE_SIZE - 2 when formatting. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/base/cpu.c2
-rw-r--r--drivers/base/node.c3
2 files changed, 3 insertions, 2 deletions
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index f829a4c71749..f160ea44a86d 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -245,7 +245,7 @@ static ssize_t print_cpus_offline(struct device *dev,
if (!alloc_cpumask_var(&offline, GFP_KERNEL))
return -ENOMEM;
cpumask_andnot(offline, cpu_possible_mask, cpu_online_mask);
- n = cpulist_scnprintf(buf, len, offline);
+ n = scnprintf(buf, len, "%*pbl", cpumask_pr_args(offline));
free_cpumask_var(offline);
/* display offline cpus >= nr_cpu_ids */
diff --git a/drivers/base/node.c b/drivers/base/node.c
index a3b82e9c7f20..36fabe43cd44 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -605,7 +605,8 @@ static ssize_t print_nodes_state(enum node_states state, char *buf)
{
int n;
- n = nodelist_scnprintf(buf, PAGE_SIZE-2, node_states[state]);
+ n = scnprintf(buf, PAGE_SIZE - 1, "%*pbl",
+ nodemask_pr_args(&node_states[state]));
buf[n++] = '\n';
buf[n] = '\0';
return n;