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    SubjectRe: [PATCH] Hook compat_sys_nanosleep up to high res timer code
    Date
    On Sunday 14 October 2007, Anton Blanchard wrote:
    > Now we have high res timers on ppc64 I thought Id test them. It turns
    > out compat_sys_nanosleep hasnt been converted to the hrtimer code and so
    > is limited to HZ resolution.
    >
    > The following patch makes compat_sys_nanosleep call hrtimer_nanosleep
    > and uses compat_alloc_user_space to avoid setting KERNEL_DS.
    >
    > Signed-off-by: Anton Blanchard <anton@samba.org>

    The code looks correct, but I think it would be nicer to change
    hrtimer_nanosleep to take a kernel pointer and have all three
    callers (common_nsleep, sys_nanosleep and compat_sys_nanosleep)
    do the copy_to_user/put_compat_timespec in the caller.

    This would also make it possible to get rid of set_fs() in
    compat_sys_clock_nanosleep().

    Arnd <><
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