printk and friends can now formap 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.
This patch is dependent on the following two patches.
lib/vsprintf: implement bitmap printing through '%*pb[l]'
cpumask, nodemask: implement cpumask/nodemask_pr_args()
Please wait till the forementioned patches are merged to mainline
before applying to subsystem trees.
Signed-off-by: Tejun Heo <t...@kernel.org>
Cc: Andrew Morton <a...@linux-foundation.org>
Cc: Russell King <li...@arm.linux.org.uk>
Cc: linux-arm-ker...@lists.infradead.org (moderated for non-subscribers)
---
drivers/bus/arm-cci.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c
index 0ce5e2d..84fd660 100644
--- a/drivers/bus/arm-cci.c
+++ b/drivers/bus/arm-cci.c
@@ -806,8 +806,8 @@ static int cci_pmu_event_init(struct perf_event *event)
static ssize_t pmu_attr_cpumask_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- int n = cpulist_scnprintf(buf, PAGE_SIZE - 2, &pmu->cpus);
-
+ int n = scnprintf(buf, PAGE_SIZE - 1, "%*pbl",
+ cpumask_pr_args(&pmu->cpus));
buf[n++] = '\n';
buf[n] = '\0';
return n;
--
2.1.0
--
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