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authorThomas Gleixner <tglx@linutronix.de>2012-05-05 15:05:41 +0000
committerThomas Gleixner <tglx@linutronix.de>2012-05-08 13:55:20 +0200
commit41101809a865dd0be1b56eff46c83fad321870b2 (patch)
treebe62c4da213f9ab79ac3f874f1ed8c6af0ff5b0a /kernel
parent2889f60814e15dea644782597d897cdba943564f (diff)
downloadlinux-41101809a865dd0be1b56eff46c83fad321870b2.tar.gz
fork: Provide weak arch_release_[task_struct|thread_info] functions
These functions allow us to move most of the duplicated thread_info allocators to the core code. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20120505150141.366461660@linutronix.de
Diffstat (limited to 'kernel')
-rw-r--r--kernel/fork.c21
1 files changed, 17 insertions, 4 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index 5d22b9b8cf7..2dfad026967 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -112,14 +112,26 @@ int nr_processes(void)
}
#ifndef __HAVE_ARCH_TASK_STRUCT_ALLOCATOR
-# define alloc_task_struct_node(node) \
- kmem_cache_alloc_node(task_struct_cachep, GFP_KERNEL, node)
-# define free_task_struct(tsk) \
- kmem_cache_free(task_struct_cachep, (tsk))
static struct kmem_cache *task_struct_cachep;
+
+static inline struct task_struct *alloc_task_struct_node(int node)
+{
+ return kmem_cache_alloc_node(task_struct_cachep, GFP_KERNEL, node);
+}
+
+void __weak arch_release_task_struct(struct task_struct *tsk) { }
+
+static inline void free_task_struct(struct task_struct *tsk)
+{
+ arch_release_task_struct(tsk);
+ kmem_cache_free(task_struct_cachep, tsk);
+}
#endif
#ifndef __HAVE_ARCH_THREAD_INFO_ALLOCATOR
+
+void __weak arch_release_thread_info(struct thread_info *ti) { }
+
static struct thread_info *alloc_thread_info_node(struct task_struct *tsk,
int node)
{
@@ -131,6 +143,7 @@ static struct thread_info *alloc_thread_info_node(struct task_struct *tsk,
static inline void free_thread_info(struct thread_info *ti)
{
+ arch_release_thread_info(ti);
free_pages((unsigned long)ti, THREAD_SIZE_ORDER);
}
#endif