ChangeSet 1.2210, 2005/03/26 13:29:14-08:00, [EMAIL PROTECTED]
[PATCH] m68knommu: 4k stack support
Support for 4k kernel stacks on m68knommu. This cleans up the use
of THREAD_SIZE, so it is used instead of hard coded size. Also remove
local offset definitions, these are generated in asm-offsets.
Patches original from Patch submitted by Philippe De Muyter <[EMAIL
PROTECTED]>
Signed-off-by: Greg Ungerer <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
thread_info.h | 27 ++++++++++++++++-----------
1 files changed, 16 insertions(+), 11 deletions(-)
diff -Nru a/include/asm-m68knommu/thread_info.h
b/include/asm-m68knommu/thread_info.h
--- a/include/asm-m68knommu/thread_info.h 2005-03-26 17:28:42 -08:00
+++ b/include/asm-m68knommu/thread_info.h 2005-03-26 17:28:42 -08:00
@@ -15,8 +15,21 @@
#ifndef __ASSEMBLY__
/*
+ * Size of kernel stack for each process. This must be a power of 2...
+ */
+#ifdef CONFIG_4KSTACKS
+#define THREAD_SIZE_ORDER (0)
+#else
+#define THREAD_SIZE_ORDER (1)
+#endif
+
+/*
+ * for asm files, THREAD_SIZE is now generated by asm-offsets.c
+ */
+#define THREAD_SIZE (PAGE_SIZE<<THREAD_SIZE_ORDER)
+
+/*
* low level task data.
- * If you change this, change the TI_* offsets below to match.
*/
struct thread_info {
struct task_struct *task; /* main task structure */
@@ -60,19 +73,11 @@
/* thread information allocation */
#define alloc_thread_info(tsk) ((struct thread_info *) \
- __get_free_pages(GFP_KERNEL, 1))
-#define free_thread_info(ti) free_pages((unsigned long) (ti), 1)
+ __get_free_pages(GFP_KERNEL, THREAD_SIZE_ORDER))
+#define free_thread_info(ti) free_pages((unsigned long) (ti),
THREAD_SIZE_ORDER)
#define get_thread_info(ti) get_task_struct((ti)->task)
#define put_thread_info(ti) put_task_struct((ti)->task)
#endif /* __ASSEMBLY__ */
-
-/*
- * Offsets in thread_info structure, used in assembly code
- */
-#define TI_TASK 0
-#define TI_EXECDOMAIN 4
-#define TI_FLAGS 8
-#define TI_CPU 12
#define PREEMPT_ACTIVE 0x4000000
-
To unsubscribe from this list: send the line "unsubscribe bk-commits-head" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
