[uml-devel] [PATCH 1/2] UML - Use get_free_pages to allocate kernel stacks

[uml-devel] [PATCH 1/2] UML - Use get_free_pages to allocate kernel stacks

[Jeff Dike]

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

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
--
 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
 

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[PATCH 1/2] UML - Use get_free_pages to allocate kernel stacks

[Jeff Dike]

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

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
--
 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