Commit 8947f9d5b361ce927be6d5c11fed57905b7a4100
Committed by
Linus Torvalds
Linus Torvalds
1 parent
71cbb949d1
Exists in
master
and in
4 other branches
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>
Showing 1 changed file with 2 additions and 2 deletions Side-by-side Diff
kernel/cgroup.c
| ... | ... | @@ -118,7 +118,7 @@ |
| 118 | 118 | * extra work in the fork/exit path if none of the subsystems need to |
| 119 | 119 | * be called. |
| 120 | 120 | */ |
| 121 | -static int need_forkexit_callback; | |
| 121 | +static int need_forkexit_callback __read_mostly; | |
| 122 | 122 | static int need_mm_owner_callback __read_mostly; |
| 123 | 123 | |
| 124 | 124 | /* convenient tests for these bits */ |
| ... | ... | @@ -220,7 +220,7 @@ |
| 220 | 220 | * task until after the first call to cgroup_iter_start(). This |
| 221 | 221 | * reduces the fork()/exit() overhead for people who have cgroups |
| 222 | 222 | * compiled into their kernel but not actually in use */ |
| 223 | -static int use_task_css_set_links; | |
| 223 | +static int use_task_css_set_links __read_mostly; | |
| 224 | 224 | |
| 225 | 225 | /* When we create or destroy a css_set, the operation simply |
| 226 | 226 | * takes/releases a reference count on all the cgroups referenced |