diff options
| -rw-r--r-- | include/linux/cpuset.h | 6 | ||||
| -rw-r--r-- | include/linux/sched.h | 1 | ||||
| -rw-r--r-- | kernel/cpuset.c | 20 | ||||
| -rw-r--r-- | mm/slab.c | 2 |
4 files changed, 24 insertions, 5 deletions
diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h index 20b51cab659..457ed765a11 100644 --- a/include/linux/cpuset.h +++ b/include/linux/cpuset.h @@ -69,6 +69,7 @@ extern void cpuset_task_status_allowed(struct seq_file *m, struct task_struct *task); extern int cpuset_mem_spread_node(void); +extern int cpuset_slab_spread_node(void); static inline int cpuset_do_page_mem_spread(void) { @@ -194,6 +195,11 @@ static inline int cpuset_mem_spread_node(void) return 0; } +static inline int cpuset_slab_spread_node(void) +{ + return 0; +} + static inline int cpuset_do_page_mem_spread(void) { return 0; diff --git a/include/linux/sched.h b/include/linux/sched.h index c0151ffd354..4f31a166b1a 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1423,6 +1423,7 @@ struct task_struct { nodemask_t mems_allowed; /* Protected by alloc_lock */ int mems_allowed_change_disable; int cpuset_mem_spread_rotor; + int cpuset_slab_spread_rotor; #endif #ifdef CONFIG_CGROUPS /* Control Group info protected by css_set_lock */ diff --git a/kernel/cpuset.c b/kernel/cpuset.c index 61d6af7fa67..02b9611eadd 100644 --- a/kernel/cpuset.c +++ b/kernel/cpuset.c @@ -2469,7 +2469,8 @@ void cpuset_unlock(void) } /** - * cpuset_mem_spread_node() - On which node to begin search for a page + * cpuset_mem_spread_node() - On which node to begin search for a file page + * cpuset_slab_spread_node() - On which node to begin search for a slab page * * If a task is marked PF_SPREAD_PAGE or PF_SPREAD_SLAB (as for * tasks in a cpuset with is_spread_page or is_spread_slab set), @@ -2494,16 +2495,27 @@ void cpuset_unlock(void) * See kmem_cache_alloc_node(). */ -int cpuset_mem_spread_node(void) +static int cpuset_spread_node(int *rotor) { int node; - node = next_node(current->cpuset_mem_spread_rotor, current->mems_allowed); + node = next_node(*rotor, current->mems_allowed); if (node == MAX_NUMNODES) node = first_node(current->mems_allowed); - current->cpuset_mem_spread_rotor = node; + *rotor = node; return node; } + +int cpuset_mem_spread_node(void) +{ + return cpuset_spread_node(¤t->cpuset_mem_spread_rotor); +} + +int cpuset_slab_spread_node(void) +{ + return cpuset_spread_node(¤t->cpuset_slab_spread_rotor); +} + EXPORT_SYMBOL_GPL(cpuset_mem_spread_node); /** diff --git a/mm/slab.c b/mm/slab.c index 02786e1a32d..8270ba3d198 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -3219,7 +3219,7 @@ static void *alternate_node_alloc(struct kmem_cache *cachep, gfp_t flags) nid_alloc = nid_here = numa_node_id(); get_mems_allowed(); if (cpuset_do_slab_mem_spread() && (cachep->flags & SLAB_MEM_SPREAD)) - nid_alloc = cpuset_mem_spread_node(); + nid_alloc = cpuset_slab_spread_node(); else if (current->mempolicy) nid_alloc = slab_node(current->mempolicy); put_mems_allowed(); |