time: move PIT_TICK_RATE to linux/timex.h
commit08604bd9935dc98fb62ef61d5b7baa7ccc10f8c2
authorArnd Bergmann <arnd@arndb.de>
Tue, 16 Jun 2009 22:31:12 +0000 (16 15:31 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 17 Jun 2009 02:47:27 +0000 (16 19:47 -0700)
tree2d0d451d78024bfbb4961a9ba94902abdc5f17e4
parent03347e2592078a90df818670fddf97a33eec70fb
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>
13 files changed:
arch/alpha/include/asm/8253pit.h
arch/alpha/kernel/sys_ruffian.c
arch/mips/include/asm/i8253.h
arch/powerpc/include/asm/8253pit.h
arch/x86/include/asm/timex.h
arch/x86/kernel/i8253.c
arch/x86/kernel/tsc.c
drivers/clocksource/acpi_pm.c
drivers/input/joystick/analog.c
drivers/input/misc/pcspkr.c
include/linux/timex.h
sound/drivers/pcsp/pcsp.h
sound/oss/pas2_pcm.c