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-rw-r--r--kernel/fork.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index 552c8d8e77ad..5a5d6fef341d 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -93,6 +93,23 @@ int nr_processes(void)
static struct kmem_cache *task_struct_cachep;
#endif
+#ifndef __HAVE_ARCH_THREAD_INFO_ALLOCATOR
+static inline struct thread_info *alloc_thread_info(struct task_struct *tsk)
+{
+#ifdef CONFIG_DEBUG_STACK_USAGE
+ gfp_t mask = GFP_KERNEL | __GFP_ZERO;
+#else
+ gfp_t mask = GFP_KERNEL;
+#endif
+ return (struct thread_info *)__get_free_pages(mask, THREAD_SIZE_ORDER);
+}
+
+static inline void free_thread_info(struct thread_info *ti)
+{
+ free_pages((unsigned long)ti, THREAD_SIZE_ORDER);
+}
+#endif
+
/* SLAB cache for signal_struct structures (tsk->signal) */
static struct kmem_cache *signal_cachep;