From 04d0608b4407cedb69a0951899c75002ddaf1681 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Tue, 10 Nov 2020 15:41:21 +0100 Subject: docs: core-api/printk-formats.rst: Clarify formatting {cpu,node}mask Clarify how to pass the field width for bitmaps, and mention the helper macros that are available to ease printing cpumask and nodemask. Signed-off-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/20201110144121.3278667-1-geert+renesas@glider.be Signed-off-by: Jonathan Corbet --- Documentation/core-api/printk-formats.rst | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'Documentation/core-api/printk-formats.rst') diff --git a/Documentation/core-api/printk-formats.rst b/Documentation/core-api/printk-formats.rst index 6d26c5c6ac48..160e710d992f 100644 --- a/Documentation/core-api/printk-formats.rst +++ b/Documentation/core-api/printk-formats.rst @@ -531,7 +531,9 @@ For printing bitmap and its derivatives such as cpumask and nodemask, %*pb outputs 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. -Passed by reference. +The field width is passed by value, the bitmap is passed by reference. +Helper macros cpumask_pr_args() and nodemask_pr_args() are available to ease +printing cpumask and nodemask. Flags bitfields such as page flags, gfp_flags --------------------------------------------- -- cgit