clean up duplicated alloc/free_thread_info
We duplicate alloc/free_thread_info defines on many platforms (the
majority uses __get_free_pages/free_pages). This patch defines common
defines and removes these duplicated defines.
__HAVE_ARCH_THREAD_INFO_ALLOCATOR is introduced for platforms that do
something different.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/asm-parisc/thread_info.h b/include/asm-parisc/thread_info.h
index 2d9c750..9f81274 100644
--- a/include/asm-parisc/thread_info.h
+++ b/include/asm-parisc/thread_info.h
@@ -34,15 +34,11 @@
/* thread information allocation */
-#define THREAD_ORDER 2
+#define THREAD_SIZE_ORDER 2
/* Be sure to hunt all references to this down when you change the size of
* the kernel stack */
-#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
-#define THREAD_SHIFT (PAGE_SHIFT + THREAD_ORDER)
-
-#define alloc_thread_info(tsk) ((struct thread_info *) \
- __get_free_pages(GFP_KERNEL, THREAD_ORDER))
-#define free_thread_info(ti) free_pages((unsigned long) (ti), THREAD_ORDER)
+#define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER)
+#define THREAD_SHIFT (PAGE_SHIFT + THREAD_SIZE_ORDER)
/* how to get the thread information struct from C */
#define current_thread_info() ((struct thread_info *)mfctl(30))