From cb210ee3a81afab7c64777635cc18899a2bdd9a5 Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Thu, 29 Mar 2012 15:59:11 -0400 Subject: [PATCH] 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 --- arch/tile/kernel/smp.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/tile/kernel/smp.c b/arch/tile/kernel/smp.c index 7b6df8c27709..91da0f721958 100644 --- a/arch/tile/kernel/smp.c +++ b/arch/tile/kernel/smp.c @@ -113,6 +113,12 @@ void smp_send_stop(void) 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.