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Subject[PATCH 17/32] percpu: use %*pb[l] to print bitmaps including cpumasks and nodemasks
Date
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.

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 <tj@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Lameter <cl@linux-foundation.org>
---
mm/percpu.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/mm/percpu.c b/mm/percpu.c
index d39e2f4..73c97a5 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1528,7 +1528,6 @@ static void pcpu_dump_alloc_info(const char *lvl,
int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
void *base_addr)
{
- static char cpus_buf[4096] __initdata;
static int smap[PERCPU_DYNAMIC_EARLY_SLOTS] __initdata;
static int dmap[PERCPU_DYNAMIC_EARLY_SLOTS] __initdata;
size_t dyn_size = ai->dyn_size;
@@ -1541,12 +1540,11 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
int *unit_map;
int group, unit, i;

- cpumask_scnprintf(cpus_buf, sizeof(cpus_buf), cpu_possible_mask);
-
#define PCPU_SETUP_BUG_ON(cond) do { \
if (unlikely(cond)) { \
pr_emerg("PERCPU: failed to initialize, %s", #cond); \
- pr_emerg("PERCPU: cpu_possible_mask=%s\n", cpus_buf); \
+ pr_emerg("PERCPU: cpu_possible_mask=%*pb\n", \
+ cpumask_pr_args(cpu_possible_mask)); \
pcpu_dump_alloc_info(KERN_EMERG, ai); \
BUG(); \
} \
--
2.1.0


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