linux-kernel - [PATCH 27/32] mm: use %*pb[l] to print bitmaps including cpumasks and nodemasks

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Message-Id: <1422108218-25398-28-git-send-email-tj@kernel.org>
Date:	Sat, 24 Jan 2015 09:03:33 -0500
From:	Tejun Heo <tj@...nel.org>
To:	akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org, Tejun Heo <tj@...nel.org>
Subject: [PATCH 27/32] mm: 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>
---
 mm/mempolicy.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 0e0961b..b8a6907 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -2838,8 +2838,7 @@ void mpol_to_str(char *buffer, int maxlen, struct mempolicy *pol)
 			p += snprintf(p, buffer + maxlen - p, "relative");
 	}
 
-	if (!nodes_empty(nodes)) {
-		p += snprintf(p, buffer + maxlen - p, ":");
-	 	p += nodelist_scnprintf(p, buffer + maxlen - p, nodes);
-	}
+	if (!nodes_empty(nodes))
+		p += scnprintf(p, buffer + maxlen - p, ":%*pbl",
+			       nodemask_pr_args(&nodes));
 }
-- 
2.1.0

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