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sh: oprofile: Kill off dead valid_kernel_stack().

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This is no longer used, kill it off.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2009-08-14 04:59:50 +09:00
parent 0eff9f66de
commit f54aab4a74
1 changed files with 0 additions and 27 deletions
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27
arch/sh/oprofile/backtrace.c
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@ -81,33 +81,6 @@ user_backtrace(unsigned long *stackaddr, struct pt_regs *regs)
return stackaddr;
}
/*
* | | /\ Higher addresses
* | |
* --------------- stack base (address of current_thread_info)
* | thread info |
* . .
* | stack |
* --------------- saved regs->regs[15] value if valid
* . .
* --------------- struct pt_regs stored on stack (struct pt_regs *)
* | |
* . .
* | |
* --------------- ???
* | |
* | | \/ Lower addresses
*
* Thus, &pt_regs <-> stack base restricts the valid(ish) fp values
*/
static int valid_kernel_stack(unsigned long *stackaddr, struct pt_regs *regs)
{
unsigned long stack = (unsigned long)regs;
unsigned long stack_base = (stack & ~(THREAD_SIZE - 1)) + THREAD_SIZE;
return ((unsigned long)stackaddr > stack) && ((unsigned long)stackaddr < stack_base);
}
void sh_backtrace(struct pt_regs * const regs, unsigned int depth)
{
unsigned long *stackaddr;