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| author | Paul Mundt <lethal@linux-sh.org> | 2006-09-27 09:20:16 (GMT) |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2006-09-27 09:20:16 (GMT) |
| commit | d153ea88dccf003173315b5d21acabebb897fb4a (patch) | |
| tree | 5cdc96ef0ec58026d82c03f76250ac1833f566d4 /include/asm-sh | |
| parent | 7a440c950efb5cdc8a05cc6c3ec8fc864b60ef77 (diff) | |
| download | linux-d153ea88dccf003173315b5d21acabebb897fb4a.tar.xz | |
sh: stack debugging support.
This adds a DEBUG_STACK_USAGE and DEBUG_STACKOVERFLOW for SH.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include/asm-sh')
| -rw-r--r-- | include/asm-sh/page.h | 2 | ||||
| -rw-r--r-- | include/asm-sh/thread_info.h | 12 |
2 files changed, 9 insertions, 5 deletions
diff --git a/include/asm-sh/page.h b/include/asm-sh/page.h index e913553..888d6fe 100644 --- a/include/asm-sh/page.h +++ b/include/asm-sh/page.h @@ -16,7 +16,7 @@ /* PAGE_SHIFT determines the page size */ #define PAGE_SHIFT 12 -#define PAGE_SIZE (1UL << PAGE_SHIFT) +#define PAGE_SIZE (1 << PAGE_SHIFT) #define PAGE_MASK (~(PAGE_SIZE-1)) #define PTE_MASK PAGE_MASK diff --git a/include/asm-sh/thread_info.h b/include/asm-sh/thread_info.h index 5eb874b..605259f 100644 --- a/include/asm-sh/thread_info.h +++ b/include/asm-sh/thread_info.h @@ -29,6 +29,8 @@ struct thread_info { #endif #define PREEMPT_ACTIVE 0x10000000 +#define THREAD_SIZE (PAGE_SIZE * 2) +#define STACK_WARN (THREAD_SIZE / 8) /* * macros/functions for gaining access to the thread information structure @@ -50,8 +52,6 @@ struct thread_info { #define init_thread_info (init_thread_union.thread_info) #define init_stack (init_thread_union.stack) -#define THREAD_SIZE (2*PAGE_SIZE) - /* how to get the thread information struct from C */ static inline struct thread_info *current_thread_info(void) { @@ -73,8 +73,12 @@ static inline struct thread_info *current_thread_info(void) } /* thread information allocation */ -#define alloc_thread_info(ti) ((struct thread_info *) __get_free_pages(GFP_KERNEL,1)) -#define free_thread_info(ti) free_pages((unsigned long) (ti), 1) +#ifdef CONFIG_DEBUG_STACK_USAGE +#define alloc_thread_info(ti) kzalloc(THREAD_SIZE, GFP_KERNEL) +#else +#define alloc_thread_info(ti) kmalloc(THREAD_SIZE, GFP_KERNEL) +#endif +#define free_thread_info(ti) kfree(ti) #else /* !__ASSEMBLY__ */ |