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| author | Li Zefan <lizf@cn.fujitsu.com> | 2008-07-25 01:46:56 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-25 10:53:35 -0700 |
| commit | 8947f9d5b361ce927be6d5c11fed57905b7a4100 (patch) | |
| tree | f4a7d212cfef8889a60022c8ff3c9cfcf97962c2 /kernel/cgroup.c | |
| parent | 71cbb949d17d4d776abd547135feb7f3282405c8 (diff) | |
| download | lwn-8947f9d5b361ce927be6d5c11fed57905b7a4100.tar.gz lwn-8947f9d5b361ce927be6d5c11fed57905b7a4100.zip | |
cgroups: annotate two variables with __read_mostly
- need_forkexit_callback will be read only after system boot.
- use_task_css_set_links will be read only after it's set.
And these 2 variables are checked when a new process is forked.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Paul Menage <menage@google.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/cgroup.c')
| -rw-r--r-- | kernel/cgroup.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 6836a9063634..70d083c6fb6b 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -118,7 +118,7 @@ static int root_count; * extra work in the fork/exit path if none of the subsystems need to * be called. */ -static int need_forkexit_callback; +static int need_forkexit_callback __read_mostly; static int need_mm_owner_callback __read_mostly; /* convenient tests for these bits */ @@ -220,7 +220,7 @@ static struct hlist_head *css_set_hash(struct cgroup_subsys_state *css[]) * task until after the first call to cgroup_iter_start(). This * reduces the fork()/exit() overhead for people who have cgroups * compiled into their kernel but not actually in use */ -static int use_task_css_set_links; +static int use_task_css_set_links __read_mostly; /* When we create or destroy a css_set, the operation simply * takes/releases a reference count on all the cgroups referenced |