arm64: traps: save cpu regs to minidump when cpus die

If two cpu die at the same time, the first cpu get die_lock,
calls minidump die notify and saves regs, then panics.
But the second cpu would hardlock because it can't get the die_lock.
And nothing is saved to minidump, so we have the patch.

Signed-off-by: Huibin Hong <huibin.hong@rock-chips.com>
Change-Id: I38cda3a6cee160ba1293a2e18c7238c96cf2e755

arch/arm64/kernel/traps.c

@@ -48,6 +48,10 @@
 
 #include <trace/hooks/traps.h>
 
+#if IS_ENABLED(CONFIG_ROCKCHIP_MINIDUMP)
+#include <soc/rockchip/rk_minidump.h>
+#endif
+
 static const char *handler[]= {
 	"Synchronous Abort",
 	"IRQ",
@@ -123,6 +127,9 @@ void die(const char *str, struct pt_regs *regs, int err)
 	int ret;
 	unsigned long flags;
 
+#if IS_ENABLED(CONFIG_ROCKCHIP_MINIDUMP)
+	rk_minidump_update_cpu_regs(regs);
+#endif
 	raw_spin_lock_irqsave(&die_lock, flags);
 
 	oops_enter();