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| author | Ingo Molnar <mingo@kernel.org> | 2016-08-10 14:11:54 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-08-10 14:11:54 +0200 |
| commit | a2071cd765637002523798358d2ca441306d708b (patch) | |
| tree | bafac1682bfa91457439cad09d2eeea71f2ad3bf /kernel/fork.c | |
| parent | 784bdf3bb694b256fcd6120b93e8947a84249a3a (diff) | |
| parent | a0cba2179ea4c1820fce2ee046b6ed90ecc56196 (diff) | |
| download | linux-a2071cd765637002523798358d2ca441306d708b.tar.gz linux-a2071cd765637002523798358d2ca441306d708b.tar.bz2 linux-a2071cd765637002523798358d2ca441306d708b.zip | |
Merge branch 'linus' into locking/urgent, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 4a7ec0c6c88c..52e725d4a866 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -162,23 +162,15 @@ void __weak arch_release_thread_stack(unsigned long *stack) static unsigned long *alloc_thread_stack_node(struct task_struct *tsk, int node) { - struct page *page = alloc_kmem_pages_node(node, THREADINFO_GFP, - THREAD_SIZE_ORDER); - - if (page) - memcg_kmem_update_page_stat(page, MEMCG_KERNEL_STACK, - 1 << THREAD_SIZE_ORDER); + struct page *page = alloc_pages_node(node, THREADINFO_GFP, + THREAD_SIZE_ORDER); return page ? page_address(page) : NULL; } static inline void free_thread_stack(unsigned long *stack) { - struct page *page = virt_to_page(stack); - - memcg_kmem_update_page_stat(page, MEMCG_KERNEL_STACK, - -(1 << THREAD_SIZE_ORDER)); - __free_kmem_pages(page, THREAD_SIZE_ORDER); + __free_pages(virt_to_page(stack), THREAD_SIZE_ORDER); } # else static struct kmem_cache *thread_stack_cache; @@ -223,9 +215,15 @@ static struct kmem_cache *mm_cachep; static void account_kernel_stack(unsigned long *stack, int account) { - struct zone *zone = page_zone(virt_to_page(stack)); + /* All stack pages are in the same zone and belong to the same memcg. */ + struct page *first_page = virt_to_page(stack); + + mod_zone_page_state(page_zone(first_page), NR_KERNEL_STACK_KB, + THREAD_SIZE / 1024 * account); - mod_zone_page_state(zone, NR_KERNEL_STACK, account); + memcg_kmem_update_page_stat( + first_page, MEMCG_KERNEL_STACK_KB, + account * (THREAD_SIZE / 1024)); } void free_task(struct task_struct *tsk) |