sparc64: Add global PMU register dumping via sysrq.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/include/asm/ptrace.h b/arch/sparc/include/asm/ptrace.h
index 0c6f6b0..da43bdc 100644
--- a/arch/sparc/include/asm/ptrace.h
+++ b/arch/sparc/include/asm/ptrace.h
@@ -42,7 +42,18 @@
 	struct thread_info	*thread;
 	unsigned long		pad1;
 };
-extern struct global_reg_snapshot global_reg_snapshot[NR_CPUS];
+
+struct global_pmu_snapshot {
+	unsigned long		pcr[4];
+	unsigned long		pic[4];
+};
+
+union global_cpu_snapshot {
+	struct global_reg_snapshot	reg;
+	struct global_pmu_snapshot	pmu;
+};
+
+extern union global_cpu_snapshot global_cpu_snapshot[NR_CPUS];
 
 #define force_successful_syscall_return()	    \
 do {	current_thread_info()->syscall_noerror = 1; \