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authorLinus Torvalds <torvalds@linux-foundation.org>2012-05-22 17:40:19 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-22 17:40:19 -0700
commit88d6ae8dc33af12fe1c7941b1fae2767374046fd (patch)
tree8f17415c0722b0a4d7511ac170cfb4e3802e1ad2 /kernel/cpuset.c
parentf5c101892fbd3d2f6d2729bc7eb7b3f6c31dbddd (diff)
parent0d4dde1ac9a5af74ac76c6ab90557d1ae7b8f5d8 (diff)
Merge branch 'for-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup updates from Tejun Heo: "cgroup file type addition / removal is updated so that file types are added and removed instead of individual files so that dynamic file type addition / removal can be implemented by cgroup and used by controllers. blkio controller changes which will come through block tree are dependent on this. Other changes include res_counter cleanup and disallowing kthread / PF_THREAD_BOUND threads to be attached to non-root cgroups. There's a reported bug with the file type addition / removal handling which can lead to oops on cgroup umount. The issue is being looked into. It shouldn't cause problems for most setups and isn't a security concern." Fix up trivial conflict in Documentation/feature-removal-schedule.txt * 'for-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (21 commits) res_counter: Account max_usage when calling res_counter_charge_nofail() res_counter: Merge res_counter_charge and res_counter_charge_nofail cgroups: disallow attaching kthreadd or PF_THREAD_BOUND threads cgroup: remove cgroup_subsys->populate() cgroup: get rid of populate for memcg cgroup: pass struct mem_cgroup instead of struct cgroup to socket memcg cgroup: make css->refcnt clearing on cgroup removal optional cgroup: use negative bias on css->refcnt to block css_tryget() cgroup: implement cgroup_rm_cftypes() cgroup: introduce struct cfent cgroup: relocate __d_cgrp() and __d_cft() cgroup: remove cgroup_add_file[s]() cgroup: convert memcg controller to the new cftype interface memcg: always create memsw files if CONFIG_CGROUP_MEM_RES_CTLR_SWAP cgroup: convert all non-memcg controllers to the new cftype interface cgroup: relocate cftype and cgroup_subsys definitions in controllers cgroup: merge cft_release_agent cftype array into the base files array cgroup: implement cgroup_add_cftypes() and friends cgroup: build list of all cgroups under a given cgroupfs_root cgroup: move cgroup_clear_directory() call out of cgroup_populate_dir() ...
Diffstat (limited to 'kernel/cpuset.c')
-rw-r--r--kernel/cpuset.c31
1 files changed, 10 insertions, 21 deletions
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 14f7070b4ba2..8c8bd652dd12 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -1765,28 +1765,17 @@ static struct cftype files[] = {
.write_u64 = cpuset_write_u64,
.private = FILE_SPREAD_SLAB,
},
-};
-
-static struct cftype cft_memory_pressure_enabled = {
- .name = "memory_pressure_enabled",
- .read_u64 = cpuset_read_u64,
- .write_u64 = cpuset_write_u64,
- .private = FILE_MEMORY_PRESSURE_ENABLED,
-};
-static int cpuset_populate(struct cgroup_subsys *ss, struct cgroup *cont)
-{
- int err;
+ {
+ .name = "memory_pressure_enabled",
+ .flags = CFTYPE_ONLY_ON_ROOT,
+ .read_u64 = cpuset_read_u64,
+ .write_u64 = cpuset_write_u64,
+ .private = FILE_MEMORY_PRESSURE_ENABLED,
+ },
- err = cgroup_add_files(cont, ss, files, ARRAY_SIZE(files));
- if (err)
- return err;
- /* memory_pressure_enabled is in root cpuset only */
- if (!cont->parent)
- err = cgroup_add_file(cont, ss,
- &cft_memory_pressure_enabled);
- return err;
-}
+ { } /* terminate */
+};
/*
* post_clone() is called during cgroup_create() when the
@@ -1887,9 +1876,9 @@ struct cgroup_subsys cpuset_subsys = {
.destroy = cpuset_destroy,
.can_attach = cpuset_can_attach,
.attach = cpuset_attach,
- .populate = cpuset_populate,
.post_clone = cpuset_post_clone,
.subsys_id = cpuset_subsys_id,
+ .base_cftypes = files,
.early_init = 1,
};