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[PATCH] arm26: task_stack_page()

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Al Viro 2006-01-12 01:06:00 -08:00 committed by Linus Torvalds
parent 02ef691f6c
commit 7fdf0d7a20
2 changed files with 5 additions and 5 deletions
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8
arch/arm26/kernel/traps.c
View file

@ -132,7 +132,7 @@ static void dump_instr(struct pt_regs *regs)
/*static*/ void __dump_stack(struct task_struct *tsk, unsigned long sp)
{
dump_mem("Stack: ", sp, 8192+(unsigned long)tsk->thread_info);
dump_mem("Stack: ", sp, 8192+(unsigned long)task_stack_page(tsk));
}
void dump_stack(void)
@ -158,7 +158,7 @@ void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)
} else if (verify_stack(fp)) {
printk("invalid frame pointer 0x%08x", fp);
ok = 0;
} else if (fp < (unsigned long)(tsk->thread_info + 1))
} else if (fp < (unsigned long)end_of_stack(tsk))
printk("frame pointer underflow");
printk("\n");
@ -168,7 +168,7 @@ void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)
/* FIXME - this is probably wrong.. */
void show_stack(struct task_struct *task, unsigned long *sp) {
dump_mem("Stack: ", (unsigned long)sp, 8192+(unsigned long)task->thread_info);
dump_mem("Stack: ", (unsigned long)sp, 8192+(unsigned long)task_stack_page(task));
}
DEFINE_SPINLOCK(die_lock);
@ -187,7 +187,7 @@ NORET_TYPE void die(const char *str, struct pt_regs *regs, int err)
printk("CPU: %d\n", smp_processor_id());
show_regs(regs);
printk("Process %s (pid: %d, stack limit = 0x%p)\n",
current->comm, current->pid, tsk->thread_info + 1);
current->comm, current->pid, end_of_stack(tsk));
if (!user_mode(regs) || in_interrupt()) {
__dump_stack(tsk, (unsigned long)(regs + 1));

2
include/asm-arm26/thread_info.h
View file

@ -82,7 +82,7 @@ static inline struct thread_info *current_thread_info(void)
/* FIXME - PAGE_SIZE < 32K */
#define THREAD_SIZE (8*32768) // FIXME - this needs attention (see kernel/fork.c which gets a nice div by zero if this is lower than 8*32768
#define task_pt_regs(task) ((struct pt_regs *)((unsigned long)(task)->thread_info + THREAD_SIZE - 8) - 1)
#define task_pt_regs(task) ((struct pt_regs *)(task_stack_page(task) + THREAD_SIZE - 8) - 1)
extern struct thread_info *alloc_thread_info(struct task_struct *task);
extern void free_thread_info(struct thread_info *);