2 files changed, 11 insertions, 2 deletions

diff --git a/arch/sparc/include/asm/irq_64.h b/arch/sparc/include/asm/irq_64.h
index 0bb9bf531745..3473e25231d9 100644
--- a/arch/sparc/include/asm/irq_64.h
+++ b/arch/sparc/include/asm/irq_64.h
@@ -90,4 +90,7 @@ static inline unsigned long get_softint(void)
         return retval;
 }
 
+void __trigger_all_cpu_backtrace(void);
+#define trigger_all_cpu_backtrace() __trigger_all_cpu_backtrace()
+
 #endif
diff --git a/arch/sparc64/kernel/process.c b/arch/sparc64/kernel/process.c
index fc8137a21ced..e1eff41809cc 100644
--- a/arch/sparc64/kernel/process.c
+++ b/arch/sparc64/kernel/process.c
@@ -300,7 +300,6 @@ void show_regs(struct pt_regs *regs)
 #endif
 }
 
-#ifdef CONFIG_MAGIC_SYSRQ
 struct global_reg_snapshot global_reg_snapshot[NR_CPUS];
 static DEFINE_SPINLOCK(global_reg_snapshot_lock);
 
@@ -362,7 +361,7 @@ static void __global_reg_poll(struct global_reg_snapshot *gp)
         }
 }
 
-static void sysrq_handle_globreg(int key, struct tty_struct *tty)
+void __trigger_all_cpu_backtrace(void)
 {
         struct thread_info *tp = current_thread_info();
         struct pt_regs *regs = get_irq_regs();
@@ -412,6 +411,13 @@ static void sysrq_handle_globreg(int key, struct tty_struct *tty)
         spin_unlock_irqrestore(&global_reg_snapshot_lock, flags);
 }
 
+#ifdef CONFIG_MAGIC_SYSRQ
+
+static void sysrq_handle_globreg(int key, struct tty_struct *tty)
+{
+        __trigger_all_cpu_backtrace();
+}
+
 static struct sysrq_key_op sparc_globalreg_op = {
         .handler        = sysrq_handle_globreg,
         .help_msg       = "Globalregs",