android_kernel_motorola_sm6225/include/asm-sparc64/pil.h
Adrian Bunk b00dc83764 sparc64: remove CVS keywords
This patch removes the CVS keywords that weren't updated for a long time
from comments.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-20 00:33:43 -07:00

21 lines
744 B
C

#ifndef _SPARC64_PIL_H
#define _SPARC64_PIL_H
/* To avoid some locking problems, we hard allocate certain PILs
* for SMP cross call messages that must do a etrap/rtrap.
*
* A local_irq_disable() does not block the cross call delivery, so
* when SMP locking is an issue we reschedule the event into a PIL
* interrupt which is blocked by local_irq_disable().
*
* In fact any XCALL which has to etrap/rtrap has a problem because
* it is difficult to prevent rtrap from running BH's, and that would
* need to be done if the XCALL arrived while %pil==15.
*/
#define PIL_SMP_CALL_FUNC 1
#define PIL_SMP_RECEIVE_SIGNAL 2
#define PIL_SMP_CAPTURE 3
#define PIL_SMP_CTX_NEW_VERSION 4
#define PIL_DEVICE_IRQ 5
#endif /* !(_SPARC64_PIL_H) */