The patch titled
cgroup: anotate two variables with __read_mostly
has been added to the -mm tree. Its filename is
cgroup-anotate-two-variables-with-__read_mostly.patch
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Subject: cgroup: anotate two variables with __read_mostly
From: Li Zefan <lizf@xxxxxxxxxxxxxx>
- 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@xxxxxxxxxxxxxx>
Cc: Paul Menage <menage@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/cgroup.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN kernel/cgroup.c~cgroup-anotate-two-variables-with-__read_mostly kernel/cgroup.c
--- a/kernel/cgroup.c~cgroup-anotate-two-variables-with-__read_mostly
+++ a/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(s
* 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
_
Patches currently in -mm which might be from lizf@xxxxxxxxxxxxxx are
linux-next.patch
git-leds.patch
scsi-libiscsic-return-errno-rather-than-errno.patch
call_usermodehelper-increase-reliability.patch
rtc-push-the-bkl-down-into-the-driver-ioctl-method-fix.patch
cgroup-use-read-lock-to-guard-find_existing_css_set.patch
cgroup-list_for_each-cleanup-v2.patch
cgroup-anotate-two-variables-with-__read_mostly.patch
memcg-avoid-unnecessary-initialization.patch
memcg-better-migration-handling.patch
memcg-remove-refcnt-from-page_cgroup.patch
memcg-remove-refcnt-from-page_cgroup-fix.patch
memcg-handle-swap-cache.patch
memcg-helper-function-for-relcaim-from-shmem.patch
memcg-add-hints-for-branch.patch
memcg-remove-a-redundant-check.patch
memrlimit-add-memrlimit-controller-documentation.patch
memrlimit-setup-the-memrlimit-controller.patch
memrlimit-cgroup-mm-owner-callback-changes-to-add-task-info.patch
memrlimit-add-memrlimit-controller-accounting-and-control.patch
cpusets-update-tasks-cpus_allowed-and-mems_allowed-after-cpu-node-offline-online.patch
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