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Remove stack unwinder for now

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It has caused more problems than it ever really solved, and is
apparently not getting cleaned up and fixed.  We can put it back when
it's stable and isn't likely to make warning or bug events worse.

In the meantime, enable frame pointers for more readable stack traces.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Linus Torvalds
2006-12-15 08:43:13 -08:00
parent d1998ef38a
commit d1526e2cda
17 changed files with 3 additions and 1870 deletions
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63
include/linux/unwind.h
View File

@ -14,63 +14,6 @@
struct module;
#ifdef CONFIG_STACK_UNWIND
#include <asm/unwind.h>
#ifndef ARCH_UNWIND_SECTION_NAME
#define ARCH_UNWIND_SECTION_NAME ".eh_frame"
#endif
/*
* Initialize unwind support.
*/
extern void unwind_init(void);
extern void unwind_setup(void);
#ifdef CONFIG_MODULES
extern void *unwind_add_table(struct module *,
const void *table_start,
unsigned long table_size);
extern void unwind_remove_table(void *handle, int init_only);
#endif
extern int unwind_init_frame_info(struct unwind_frame_info *,
struct task_struct *,
/*const*/ struct pt_regs *);
/*
* Prepare to unwind a blocked task.
*/
extern int unwind_init_blocked(struct unwind_frame_info *,
struct task_struct *);
/*
* Prepare to unwind the currently running thread.
*/
extern int unwind_init_running(struct unwind_frame_info *,
asmlinkage int (*callback)(struct unwind_frame_info *,
void *arg),
void *arg);
/*
* Unwind to previous to frame. Returns 0 if successful, negative
* number in case of an error.
*/
extern int unwind(struct unwind_frame_info *);
/*
* Unwind until the return pointer is in user-land (or until an error
* occurs). Returns 0 if successful, negative number in case of
* error.
*/
extern int unwind_to_user(struct unwind_frame_info *);
#else
struct unwind_frame_info {};
static inline void unwind_init(void) {}
@ -85,12 +28,12 @@ static inline void *unwind_add_table(struct module *mod,
return NULL;
}
#endif
static inline void unwind_remove_table(void *handle, int init_only)
{
}
#endif
static inline int unwind_init_frame_info(struct unwind_frame_info *info,
struct task_struct *tsk,
const struct pt_regs *regs)
@ -122,6 +65,4 @@ static inline int unwind_to_user(struct unwind_frame_info *info)
return -ENOSYS;
}
#endif
#endif /* _LINUX_UNWIND_H */