arch/tile: implement panic_smp_self_stop()
This allows the later-panicking tiles to wait in a lower power state
until they get interrupted with an smp_send_stop().
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
diff --git a/arch/tile/kernel/smp.c b/arch/tile/kernel/smp.c
index 7b6df8c..91da0f7 100644
--- a/arch/tile/kernel/smp.c
+++ b/arch/tile/kernel/smp.c
@@ -113,6 +113,12 @@
send_IPI_allbutself(MSG_TAG_STOP_CPU);
}
+/* On panic, just wait; we may get an smp_send_stop() later on. */
+void panic_smp_self_stop(void)
+{
+ while (1)
+ asm("nap; nop");
+}
/*
* Dispatch code called from hv_message_intr() for HV_MSG_TILE hv messages.