2007-06-19 18:43:43

by Jeff Dike

[permalink] [raw]
Subject: [PATCH 1/2] UML - Use get_free_pages to allocate kernel stacks

For some reason, I was using kmalloc instead of get_free_pages for
kernel stacks.

Signed-off-by: Jeff Dike <[email protected]>
--
include/asm-um/thread_info.h | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

Index: linux-2.6.21-mm/include/asm-um/thread_info.h
===================================================================
--- linux-2.6.21-mm.orig/include/asm-um/thread_info.h 2007-06-19 12:23:16.000000000 -0400
+++ linux-2.6.21-mm/include/asm-um/thread_info.h 2007-06-19 14:06:36.000000000 -0400
@@ -54,8 +54,10 @@ static inline struct thread_info *curren

/* thread information allocation */
#define alloc_thread_info(tsk) \
- ((struct thread_info *) kmalloc(THREAD_SIZE, GFP_KERNEL))
-#define free_thread_info(ti) kfree(ti)
+ ((struct thread_info *) __get_free_pages(GFP_KERNEL, \
+ CONFIG_KERNEL_STACK_ORDER))
+#define free_thread_info(ti) \
+ free_pages((unsigned long)(ti),CONFIG_KERNEL_STACK_ORDER)

#endif