diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2009-06-17 00:31:12 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-17 04:47:27 +0200 |
| commit | 08604bd9935dc98fb62ef61d5b7baa7ccc10f8c2 (patch) | |
| tree | 2d0d451d78024bfbb4961a9ba94902abdc5f17e4 /arch/alpha | |
| parent | Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/... (diff) | |
| download | linux-08604bd9935dc98fb62ef61d5b7baa7ccc10f8c2.tar.xz linux-08604bd9935dc98fb62ef61d5b7baa7ccc10f8c2.zip | |
time: move PIT_TICK_RATE to linux/timex.h
PIT_TICK_RATE is currently defined in four architectures, but in three
different places. While linux/timex.h is not the perfect place for it, it
is still a reasonable replacement for those drivers that traditionally use
asm/timex.h to get CLOCK_TICK_RATE and expect it to be the PIT frequency.
Note that for Alpha, the actual value changed from 1193182UL to 1193180UL.
This is unlikely to make a difference, and probably can only improve
accuracy. There was a discussion on the correct value of CLOCK_TICK_RATE
a few years ago, after which every existing instance was getting changed
to 1193182. According to the specification, it should be
1193181.818181...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Len Brown <lenb@kernel.org>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/alpha')
| -rw-r--r-- | arch/alpha/include/asm/8253pit.h | 7 | ||||
| -rw-r--r-- | arch/alpha/kernel/sys_ruffian.c | 1 |
2 files changed, 1 insertions, 7 deletions
diff --git a/arch/alpha/include/asm/8253pit.h b/arch/alpha/include/asm/8253pit.h index fef5c1450e47..a71c9c1455a7 100644 --- a/arch/alpha/include/asm/8253pit.h +++ b/arch/alpha/include/asm/8253pit.h @@ -1,10 +1,3 @@ /* * 8253/8254 Programmable Interval Timer */ - -#ifndef _8253PIT_H -#define _8253PIT_H - -#define PIT_TICK_RATE 1193180UL - -#endif diff --git a/arch/alpha/kernel/sys_ruffian.c b/arch/alpha/kernel/sys_ruffian.c index f15a329b6011..d9f9cfeb9931 100644 --- a/arch/alpha/kernel/sys_ruffian.c +++ b/arch/alpha/kernel/sys_ruffian.c @@ -14,6 +14,7 @@ #include <linux/sched.h> #include <linux/pci.h> #include <linux/ioport.h> +#include <linux/timex.h> #include <linux/init.h> #include <asm/ptrace.h> |