mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-26 19:36:41 +00:00
23 lines
799 B
C
23 lines
799 B
C
/* $Id: pil.h,v 1.1 2002/01/23 11:27:36 davem Exp $ */
|
|
#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) */
|