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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>
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1 changed files with 2 additions and 2 deletions
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@ -118,7 +118,7 @@ static int root_count;
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* extra work in the fork/exit path if none of the subsystems need to
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* extra work in the fork/exit path if none of the subsystems need to
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* be called.
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* be called.
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*/
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*/
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static int need_forkexit_callback;
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static int need_forkexit_callback __read_mostly;
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static int need_mm_owner_callback __read_mostly;
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static int need_mm_owner_callback __read_mostly;
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/* convenient tests for these bits */
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/* convenient tests for these bits */
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@ -220,7 +220,7 @@ static struct hlist_head *css_set_hash(struct cgroup_subsys_state *css[])
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* task until after the first call to cgroup_iter_start(). This
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* task until after the first call to cgroup_iter_start(). This
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* reduces the fork()/exit() overhead for people who have cgroups
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* reduces the fork()/exit() overhead for people who have cgroups
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* compiled into their kernel but not actually in use */
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* compiled into their kernel but not actually in use */
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static int use_task_css_set_links;
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static int use_task_css_set_links __read_mostly;
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/* When we create or destroy a css_set, the operation simply
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/* When we create or destroy a css_set, the operation simply
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* takes/releases a reference count on all the cgroups referenced
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* takes/releases a reference count on all the cgroups referenced
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