diff options
| author | Stephen Rothwell <sfr@canb.auug.org.au> | 2008-08-01 15:20:30 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-08-04 12:02:00 +1000 |
| commit | b8b572e1015f81b4e748417be2629dfe51ab99f9 (patch) | |
| tree | 7df58667d5ed71d6c8f8f4ce40ca16b6fb776d0b /arch/powerpc/include/asm/delay.h | |
| parent | 2b12a4c524812fb3f6ee590a02e65b95c8c32229 (diff) | |
powerpc: Move include files to arch/powerpc/include/asm
from include/asm-powerpc. This is the result of a
mkdir arch/powerpc/include/asm
git mv include/asm-powerpc/* arch/powerpc/include/asm
Followed by a few documentation/comment fixups and a couple of places
where <asm-powepc/...> was being used explicitly. Of the latter only
one was outside the arch code and it is a driver only built for powerpc.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/include/asm/delay.h')
| -rw-r--r-- | arch/powerpc/include/asm/delay.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/delay.h b/arch/powerpc/include/asm/delay.h new file mode 100644 index 000000000000..f9200a65c632 --- /dev/null +++ b/arch/powerpc/include/asm/delay.h @@ -0,0 +1,34 @@ +#ifndef _ASM_POWERPC_DELAY_H +#define _ASM_POWERPC_DELAY_H +#ifdef __KERNEL__ + +/* + * Copyright 1996, Paul Mackerras. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * PPC64 Support added by Dave Engebretsen, Todd Inglett, Mike Corrigan, + * Anton Blanchard. + */ + +extern void __delay(unsigned long loops); +extern void udelay(unsigned long usecs); + +/* + * On shared processor machines the generic implementation of mdelay can + * result in large errors. While each iteration of the loop inside mdelay + * is supposed to take 1ms, the hypervisor could sleep our partition for + * longer (eg 10ms). With the right timing these errors can add up. + * + * Since there is no 32bit overflow issue on 64bit kernels, just call + * udelay directly. + */ +#ifdef CONFIG_PPC64 +#define mdelay(n) udelay((n) * 1000) +#endif + +#endif /* __KERNEL__ */ +#endif /* _ASM_POWERPC_DELAY_H */ |