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author | Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com> | 2007-10-29 20:18:11 (GMT) |
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committer | Ingo Molnar <mingo@elte.hu> | 2007-10-29 20:18:11 (GMT) |
commit | ae8393e508e5f17add66964688c49bf0bfe4fcf9 (patch) | |
tree | 41df1c369499d862b2b4a7896f938fd4d30463b7 /kernel/sched.c | |
parent | 7bae49d498de87f0da0c20c67adaa278eac84566 (diff) | |
download | linux-fsl-qoriq-ae8393e508e5f17add66964688c49bf0bfe4fcf9.tar.xz |
sched: move rcu_head to task_group struct
Peter Zijlstra noticed that the rcu_head object need not be present
in every cfs_rq of a group. Move it to the task_group structure
instead.
Signed-off-by: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched.c')
-rw-r--r-- | kernel/sched.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 235952b..4704807 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -172,6 +172,7 @@ struct task_group { unsigned long shares; /* spinlock to serialize modification to shares */ spinlock_t lock; + struct rcu_head rcu; }; /* Default task group's sched entity on each cpu */ @@ -258,7 +259,6 @@ struct cfs_rq { */ struct list_head leaf_cfs_rq_list; /* Better name : task_cfs_rq_list? */ struct task_group *tg; /* group that "owns" this runqueue */ - struct rcu_head rcu; #endif }; @@ -7019,8 +7019,8 @@ err: /* rcu callback to free various structures associated with a task group */ static void free_sched_group(struct rcu_head *rhp) { - struct cfs_rq *cfs_rq = container_of(rhp, struct cfs_rq, rcu); - struct task_group *tg = cfs_rq->tg; + struct task_group *tg = container_of(rhp, struct task_group, rcu); + struct cfs_rq *cfs_rq; struct sched_entity *se; int i; @@ -7052,7 +7052,7 @@ void sched_destroy_group(struct task_group *tg) BUG_ON(!cfs_rq); /* wait for possible concurrent references to cfs_rqs complete */ - call_rcu(&cfs_rq->rcu, free_sched_group); + call_rcu(&tg->rcu, free_sched_group); } /* change task's runqueue when it moves between groups. |