• Arnd Bergmann's avatar
    time: move PIT_TICK_RATE to linux/timex.h · 08604bd9
    Arnd Bergmann authored
    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: default avatarArnd 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: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    08604bd9
pcsp.h 2.32 KB