linux-kernel - [PATCH 05/32] mips: use %*pb[l] to print bitmaps including cpumasks and nodemasks

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Date:	Sat, 24 Jan 2015 09:03:11 -0500
From:	Tejun Heo <tj@...nel.org>
To:	akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org, Tejun Heo <tj@...nel.org>,
	linux-mips@...ux-mips.org
Subject: [PATCH 05/32] mips: use %*pb[l] to print bitmaps including cpumasks and nodemasks

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@...nel.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-mips@...ux-mips.org
---
 arch/mips/netlogic/common/smp.c | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/arch/mips/netlogic/common/smp.c b/arch/mips/netlogic/common/smp.c
index 4fde7ac..e743bdd 100644
--- a/arch/mips/netlogic/common/smp.c
+++ b/arch/mips/netlogic/common/smp.c
@@ -162,7 +162,6 @@ void __init nlm_smp_setup(void)
 	unsigned int boot_cpu;
 	int num_cpus, i, ncore, node;
 	volatile u32 *cpu_ready = nlm_get_boot_data(BOOT_CPU_READY);
-	char buf[64];
 
 	boot_cpu = hard_smp_processor_id();
 	cpumask_clear(&phys_cpu_present_mask);
@@ -189,10 +188,10 @@ void __init nlm_smp_setup(void)
 		}
 	}
 
-	cpumask_scnprintf(buf, ARRAY_SIZE(buf), &phys_cpu_present_mask);
-	pr_info("Physical CPU mask: %s\n", buf);
-	cpumask_scnprintf(buf, ARRAY_SIZE(buf), cpu_possible_mask);
-	pr_info("Possible CPU mask: %s\n", buf);
+	pr_info("Physical CPU mask: %*pb\n",
+		cpumask_pr_args(&phys_cpu_present_mask));
+	pr_info("Possible CPU mask: %*pb\n",
+		cpumask_pr_args(cpu_possible_mask));
 
 	/* check with the cores we have woken up */
 	for (ncore = 0, i = 0; i < NLM_NR_NODES; i++)
@@ -209,7 +208,6 @@ static int nlm_parse_cpumask(cpumask_t *wakeup_mask)
 {
 	uint32_t core0_thr_mask, core_thr_mask;
 	int threadmode, i, j;
-	char buf[64];
 
 	core0_thr_mask = 0;
 	for (i = 0; i < NLM_THREADS_PER_CORE; i++)
@@ -244,8 +242,7 @@ static int nlm_parse_cpumask(cpumask_t *wakeup_mask)
 	return threadmode;
 
 unsupp:
-	cpumask_scnprintf(buf, ARRAY_SIZE(buf), wakeup_mask);
-	panic("Unsupported CPU mask %s", buf);
+	panic("Unsupported CPU mask %*pb", cpumask_pr_args(wakeup_mask));
 	return 0;
 }
 
-- 
2.1.0

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