From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- include/asm-sparc64/pil.h | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 include/asm-sparc64/pil.h (limited to 'include/asm-sparc64/pil.h') diff --git a/include/asm-sparc64/pil.h b/include/asm-sparc64/pil.h new file mode 100644 index 00000000000..8f87750c351 --- /dev/null +++ b/include/asm-sparc64/pil.h @@ -0,0 +1,26 @@ +/* $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 cli() 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 cli(). + * + * 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 + +#ifndef __ASSEMBLY__ +#define PIL_RESERVED(PIL) ((PIL) == PIL_SMP_CALL_FUNC || \ + (PIL) == PIL_SMP_RECEIVE_SIGNAL || \ + (PIL) == PIL_SMP_CAPTURE) +#endif + +#endif /* !(_SPARC64_PIL_H) */ -- cgit v1.2.3-70-g09d2