Index: 2006-01-05/arch/i386/kernel/time-xen.c
===================================================================
--- 2006-01-05.orig/arch/i386/kernel/time-xen.c	2006-01-09 16:17:28.249267368 +0100
+++ 2006-01-05/arch/i386/kernel/time-xen.c	2006-01-09 11:54:28.000000000 +0100
@@ -534,7 +534,29 @@ unsigned long long sched_clock(void)
 	return monotonic_clock();
 }
 
-#if defined(CONFIG_SMP) && defined(CONFIG_FRAME_POINTER)
+#if defined(__x86_64__)
+unsigned long profile_pc(struct pt_regs *regs)
+{
+	unsigned long pc = instruction_pointer(regs);
+
+	/* Assume the lock function has either no stack frame or only a single word.
+	   This checks if the address on the stack looks like a kernel text address.
+	   There is a small window for false hits, but in that case the tick
+	   is just accounted to the spinlock function.
+	   Better would be to write these functions in assembler again
+	   and check exactly. */
+	if (in_lock_functions(pc)) {
+		char *v = *(char **)regs->rsp;
+		if ((v >= _stext && v <= _etext) ||
+			(v >= _sinittext && v <= _einittext) ||
+			(v >= (char *)MODULES_VADDR  && v <= (char *)MODULES_END))
+			return (unsigned long)v;
+		return ((unsigned long *)regs->rsp)[1];
+	}
+	return pc;
+}
+EXPORT_SYMBOL(profile_pc);
+#elif defined(CONFIG_SMP) && defined(CONFIG_FRAME_POINTER)
 unsigned long profile_pc(struct pt_regs *regs)
 {
 	unsigned long pc = instruction_pointer(regs);
Index: 2006-01-05/include/asm-x86_64/mach-xen/asm/ptrace.h
===================================================================
--- 2006-01-05.orig/include/asm-x86_64/mach-xen/asm/ptrace.h	2006-01-09 16:17:28.251267064 +0100
+++ /dev/null	1970-01-01 00:00:00.000000000 +0000
@@ -1,125 +0,0 @@
-#ifndef _X86_64_PTRACE_H
-#define _X86_64_PTRACE_H
-
-#if defined(__ASSEMBLY__) || defined(__FRAME_OFFSETS) 
-#define R15 0
-#define R14 8
-#define R13 16
-#define R12 24
-#define RBP 32
-#define RBX 40
-/* arguments: interrupts/non tracing syscalls only save upto here*/
-#define R11 48
-#define R10 56	
-#define R9 64
-#define R8 72
-#define RAX 80
-#define RCX 88
-#define RDX 96
-#define RSI 104
-#define RDI 112
-#define ORIG_RAX 120       /* = ERROR */ 
-/* end of arguments */ 	
-/* cpu exception frame or undefined in case of fast syscall. */
-#define RIP 128
-#define CS 136
-#define EFLAGS 144
-#define RSP 152
-#define SS 160
-#define ARGOFFSET R11
-#endif /* __ASSEMBLY__ */
-
-/* top of stack page */ 
-#define FRAME_SIZE 168
-
-#define PTRACE_OLDSETOPTIONS         21
-
-#ifndef __ASSEMBLY__ 
-
-struct pt_regs {
-	unsigned long r15;
-	unsigned long r14;
-	unsigned long r13;
-	unsigned long r12;
-	unsigned long rbp;
-	unsigned long rbx;
-/* arguments: non interrupts/non tracing syscalls only save upto here*/
- 	unsigned long r11;
-	unsigned long r10;	
-	unsigned long r9;
-	unsigned long r8;
-	unsigned long rax;
-	unsigned long rcx;
-	unsigned long rdx;
-	unsigned long rsi;
-	unsigned long rdi;
-	unsigned long orig_rax;
-/* end of arguments */ 	
-/* cpu exception frame or undefined */
-	unsigned long rip;
-	unsigned long cs;
-	unsigned long eflags; 
-	unsigned long rsp; 
-	unsigned long ss;
-/* top of stack page */ 
-};
-
-#endif
-
-/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
-#define PTRACE_GETREGS            12
-#define PTRACE_SETREGS            13
-#define PTRACE_GETFPREGS          14
-#define PTRACE_SETFPREGS          15
-#define PTRACE_GETFPXREGS         18
-#define PTRACE_SETFPXREGS         19
-
-/* only useful for access 32bit programs */
-#define PTRACE_GET_THREAD_AREA    25
-#define PTRACE_SET_THREAD_AREA    26
-
-#define PTRACE_ARCH_PRCTL	  30	/* arch_prctl for child */
-
-#if defined(__KERNEL__) && !defined(__ASSEMBLY__) 
-#define user_mode(regs) (!!((regs)->cs & 3))
-#define user_mode_vm(regs) user_mode(regs)
-#define instruction_pointer(regs) ((regs)->rip)
-#if defined(CONFIG_SMP) && defined(CONFIG_FRAME_POINTER)
-extern unsigned long profile_pc(struct pt_regs *regs);
-#else
-#define profile_pc(regs) instruction_pointer(regs)
-#endif
-
-void signal_fault(struct pt_regs *regs, void __user *frame, char *where);
-
-struct task_struct;
-
-extern unsigned long
-convert_rip_to_linear(struct task_struct *child, struct pt_regs *regs);
-
-enum {
-        EF_CF   = 0x00000001,
-        EF_PF   = 0x00000004,
-        EF_AF   = 0x00000010,
-        EF_ZF   = 0x00000040,
-        EF_SF   = 0x00000080,
-        EF_TF   = 0x00000100,
-        EF_IE   = 0x00000200,
-        EF_DF   = 0x00000400,
-        EF_OF   = 0x00000800,
-        EF_IOPL = 0x00003000,
-        EF_IOPL_RING0 = 0x00000000,
-        EF_IOPL_RING1 = 0x00001000,
-        EF_IOPL_RING2 = 0x00002000,
-        EF_NT   = 0x00004000,   /* nested task */
-        EF_RF   = 0x00010000,   /* resume */
-        EF_VM   = 0x00020000,   /* virtual mode */
-        EF_AC   = 0x00040000,   /* alignment */
-        EF_VIF  = 0x00080000,   /* virtual interrupt */
-        EF_VIP  = 0x00100000,   /* virtual interrupt pending */
-        EF_ID   = 0x00200000,   /* id */
-};
-
-#endif
-
-#endif