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arch/tile: implement panic_smp_self_stop()

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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>
This commit is contained in:
Chris Metcalf 2012-03-29 15:59:11 -04:00
parent 8c92ba6c32
commit cb210ee3a8
1 changed files with 6 additions and 0 deletions
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6
arch/tile/kernel/smp.c
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@ -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.