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Commit f6e8e284 authored Jan 30, 2008 by Harvey Harrison Committed by Ingo Molnar Jan 30, 2008

x86: rename stack_pointer to kernel_trap_sp



Choose a less generic name for such a special case.  Add
a comment explaining the odd use in X86_32.

Change the one user of stack_pointer.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

parent dbe3533b

arch/x86/oprofile/backtrace.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -77,7 +77,7 @@ void
		x86_backtrace(struct pt_regs * const regs, unsigned int depth)
		{
		struct frame_head head = (struct frame_head )frame_pointer(regs);
		unsigned long stack = stack_pointer(regs);
		unsigned long stack = kernel_trap_sp(regs);

		if (!user_mode_vm(regs)) {
		if (depth)

include/asm-x86/ptrace.h

+7 −1

Original line number	Diff line number	Diff line
		@@ -182,7 +182,13 @@ static inline int v8086_mode(struct pt_regs *regs)
		#endif
		}

		static inline unsigned long stack_pointer(struct pt_regs *regs)
		/*
		* X86_32 CPUs don't save ss and esp if the CPU is already in kernel mode
		* when it traps. So regs will be the current sp.
		*
		* This is valid only for kernel mode traps.
		*/
		static inline unsigned long kernel_trap_sp(struct pt_regs *regs)
		{
		#ifdef CONFIG_X86_32
		return (unsigned long)regs;