diff options
| author | David Rientjes | 2015-09-08 15:00:44 -0700 |
|---|---|---|
| committer | Linus Torvalds | 2015-09-08 15:35:28 -0700 |
| commit | 8989e4c7d4e3c30b55c998a1138cd06c92df7295 (patch) | |
| tree | 6d3c8967401ff31e119573fb9cc32b3bece99354 /include/linux | |
| parent | 071a4befebb655d6b31bf5c6bacd5a6df035224d (diff) | |
mm, oom: add description of struct oom_control
Describe the purpose of struct oom_control and what each member does.
Also make gfp_mask and order const since they are never manipulated or
passed to functions that discard the qualifier.
Signed-off-by: David Rientjes <rientjes@google.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/oom.h | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/include/linux/oom.h b/include/linux/oom.h index 8fb67b9e6110..03e6257321f0 100644 --- a/include/linux/oom.h +++ b/include/linux/oom.h @@ -12,11 +12,25 @@ struct notifier_block; struct mem_cgroup; struct task_struct; +/* + * Details of the page allocation that triggered the oom killer that are used to + * determine what should be killed. + */ struct oom_control { + /* Used to determine cpuset */ struct zonelist *zonelist; - nodemask_t *nodemask; - gfp_t gfp_mask; - int order; + + /* Used to determine mempolicy */ + nodemask_t *nodemask; + + /* Used to determine cpuset and node locality requirement */ + const gfp_t gfp_mask; + + /* + * order == -1 means the oom kill is required by sysrq, otherwise only + * for display purposes. + */ + const int order; }; /* |