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Commit f54aab4a authored by Paul Mundt's avatar Paul Mundt
Browse files

sh: oprofile: Kill off dead valid_kernel_stack(). 



This is no longer used, kill it off.

Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 0eff9f66

arch/sh/oprofile/backtrace.c

+0 −27
Original line number Original line Diff line number Diff line
@@ -81,33 +81,6 @@ user_backtrace(unsigned long *stackaddr, struct pt_regs *regs) 
	return stackaddr;

	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)

void sh_backtrace(struct pt_regs * const regs, unsigned int depth)

{

{

	unsigned long *stackaddr;

	unsigned long *stackaddr;