diff options
| author | Michal Hocko <[email protected]> | 2017-11-15 17:39:14 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2017-11-15 18:21:07 -0800 |
| commit | 0205f75571e3a70c35f0dd5e608773cce97d9dbb (patch) | |
| tree | 165da7db9ac71e5340d08f6534663e16886a2424 /include/linux | |
| parent | c50842c8e1cddcdb69d3ece4f4df005a0e6c5ceb (diff) | |
mm: simplify nodemask printing
alloc_warn() and dump_header() have to explicitly handle NULL nodemask
which forces both paths to use pr_cont. We can do better. printk
already handles NULL pointers properly so all we need is to teach
nodemask_pr_args to handle NULL nodemask carefully. This allows
simplification of both alloc_warn() and dump_header() and gets rid of
pr_cont altogether.
This patch has been motivated by patch from Joe Perches
http://lkml.kernel.org/r/b31236dfe3fc924054fd7842bde678e71d193638.1509991345.git.joe@perches.com
[[email protected]: fix tile warning, per Arnd]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Michal Hocko <[email protected]>
Acked-by: Joe Perches <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/nodemask.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h index de1c50b93c61..15cab3967d6d 100644 --- a/include/linux/nodemask.h +++ b/include/linux/nodemask.h @@ -104,7 +104,9 @@ extern nodemask_t _unused_nodemask_arg_; * * Can be used to provide arguments for '%*pb[l]' when printing a nodemask. */ -#define nodemask_pr_args(maskp) MAX_NUMNODES, (maskp)->bits +#define nodemask_pr_args(maskp) \ + ((maskp) != NULL) ? MAX_NUMNODES : 0, \ + ((maskp) != NULL) ? (maskp)->bits : NULL /* * The inline keyword gives the compiler room to decide to inline, or |