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| author | David S. Miller <davem@sunset.davemloft.net> | 2007-07-14 02:23:37 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-07-16 04:05:02 -0700 |
| commit | 8b99cfb8cc51adae7f5294c8962a026c63100959 (patch) | |
| tree | 349cebcae3eda608f1ed52fa3afcf661fca075a9 /include/asm-sparc64 | |
| parent | 27a2ef382c7935a4dd02bff9fd361ce118df98c6 (diff) | |
| download | blackbird-op-linux-8b99cfb8cc51adae7f5294c8962a026c63100959.tar.gz blackbird-op-linux-8b99cfb8cc51adae7f5294c8962a026c63100959.zip | |
[SPARC64]: More sensible udelay implementation.
Take a page from the powerpc folks and just calculate the
delay factor directly.
Since frequency scaling chips use a system-tick register,
the value is going to be the same system-wide.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/asm-sparc64')
| -rw-r--r-- | include/asm-sparc64/bugs.h | 5 | ||||
| -rw-r--r-- | include/asm-sparc64/cpudata.h | 2 | ||||
| -rw-r--r-- | include/asm-sparc64/delay.h | 32 |
3 files changed, 7 insertions, 32 deletions
diff --git a/include/asm-sparc64/bugs.h b/include/asm-sparc64/bugs.h index bf39d86c0c9e..11ade6841971 100644 --- a/include/asm-sparc64/bugs.h +++ b/include/asm-sparc64/bugs.h @@ -4,12 +4,7 @@ */ #include <asm/sstate.h> -extern unsigned long loops_per_jiffy; - static void __init check_bugs(void) { -#ifndef CONFIG_SMP - cpu_data(0).udelay_val = loops_per_jiffy; -#endif sstate_running(); } diff --git a/include/asm-sparc64/cpudata.h b/include/asm-sparc64/cpudata.h index 0016d8b4531c..98a6e609163e 100644 --- a/include/asm-sparc64/cpudata.h +++ b/include/asm-sparc64/cpudata.h @@ -19,7 +19,7 @@ typedef struct { unsigned int __softirq_pending; /* must be 1st, see rtrap.S */ unsigned int __pad0; unsigned long clock_tick; /* %tick's per second */ - unsigned long udelay_val; + unsigned long __pad; unsigned int __pad1; unsigned int __pad2; diff --git a/include/asm-sparc64/delay.h b/include/asm-sparc64/delay.h index a4aae6f80627..a77aa622d762 100644 --- a/include/asm-sparc64/delay.h +++ b/include/asm-sparc64/delay.h @@ -1,37 +1,17 @@ /* delay.h: Linux delay routines on sparc64. * - * Copyright (C) 1996, 2004 David S. Miller (davem@davemloft.net). - * - * Based heavily upon x86 variant which is: - * Copyright (C) 1993 Linus Torvalds - * - * Delay routines calling functions in arch/sparc64/lib/delay.c + * Copyright (C) 1996, 2004, 2007 David S. Miller (davem@davemloft.net). */ -#ifndef __SPARC64_DELAY_H -#define __SPARC64_DELAY_H - -#include <linux/param.h> -#include <asm/cpudata.h> +#ifndef _SPARC64_DELAY_H +#define _SPARC64_DELAY_H #ifndef __ASSEMBLY__ -extern void __bad_udelay(void); -extern void __bad_ndelay(void); - -extern void __udelay(unsigned long usecs); -extern void __ndelay(unsigned long nsecs); -extern void __const_udelay(unsigned long usecs); extern void __delay(unsigned long loops); - -#define udelay(n) (__builtin_constant_p(n) ? \ - ((n) > 20000 ? __bad_udelay() : __const_udelay((n) * 0x10c7ul)) : \ - __udelay(n)) - -#define ndelay(n) (__builtin_constant_p(n) ? \ - ((n) > 20000 ? __bad_ndelay() : __const_udelay((n) * 5ul)) : \ - __ndelay(n)) +extern void udelay(unsigned long usecs); +#define mdelay(n) udelay((n) * 1000) #endif /* !__ASSEMBLY__ */ -#endif /* defined(__SPARC64_DELAY_H) */ +#endif /* _SPARC64_DELAY_H */ |
