2015-02-26 03:18:05

by Wang Long

Subject: [PATCH] Documentation: add print bitmap description

as the commit: "lib/vsprintf: implement bitmap printing through
'%*pb[l]'" add an easy way to print bitmaps. so printk-formats.txt
should reflect it.

Signed-off-by: Wang Long <[email protected]>
---
Documentation/printk-formats.txt | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/Documentation/printk-formats.txt b/Documentation/printk-formats.txt
index 5a615c1..255a061 100644
--- a/Documentation/printk-formats.txt
+++ b/Documentation/printk-formats.txt
@@ -239,6 +239,15 @@ s64 SHOULD be printed with %lld/%llx:

printk("%lld", s64_var);

+bitmap and its derivatives such as cpumask and nodemask:
+
+ %*pb 0779
+ %*pbl 0,3-6,8-10
+
+ For printing bitmap and its derivatives such as cpumask and nodemask,
+ %*pb output the bitmap with field width as the number of bits and %*pbl
+ output the bitmap as range list with field width as the number of bits.
+
If <type> is dependent on a config option for its size (e.g., sector_t,
blkcnt_t) or is architecture-dependent for its size (e.g., tcflag_t), use a
format specifier of its largest possible type and explicitly cast to it.
--
1.8.3.4

2015-02-27 12:23:21

by Tejun Heo

Subject: Re: [PATCH] Documentation: add print bitmap description

On Thu, Feb 26, 2015 at 03:28:25AM +0000, Wang Long wrote:
> as the commit: "lib/vsprintf: implement bitmap printing through
> '%*pb[l]'" add an easy way to print bitmaps. so printk-formats.txt
> should reflect it.
>
> Signed-off-by: Wang Long <[email protected]>

Acked-by: Tejun Heo <[email protected]>

Oops, sorry about missing that.

Thanks.

--
tejun

2015-02-27 22:12:27

by Jonathan Corbet

Subject: Re: [PATCH] Documentation: add print bitmap description

On Thu, 26 Feb 2015 03:28:25 +0000
Wang Long <[email protected]> wrote:

> as the commit: "lib/vsprintf: implement bitmap printing through
> '%*pb[l]'" add an easy way to print bitmaps. so printk-formats.txt
> should reflect it.

Applied to the docs tree.

Thanks,

jon