• Benjamin Herrenschmidt's avatar
    [PATCH] powerpc: Merge vdso's and add vdso support to 32 bits kernel · a7f290da
    Benjamin Herrenschmidt authored
    This patch moves the vdso's to arch/powerpc, adds support for the 32
    bits vdso to the 32 bits kernel, rename systemcfg (finally !), and adds
    some new (still untested) routines to both vdso's: clock_gettime() with
    support for CLOCK_REALTIME and CLOCK_MONOTONIC, clock_getres() (same
    clocks) and get_tbfreq() for glibc to retreive the timebase frequency.
    
    Tom,Steve: The implementation of get_tbfreq() I've done for 32 bits
    returns a long long (r3, r4) not a long. This is such that if we ever
    add support for >4Ghz timebases on ppc32, the userland interface won't
    have to change.
    
    I have tested gettimeofday() using some glibc patches in both ppc32 and
    ppc64 kernels using 32 bits userland (I haven't had a chance to test a
    64 bits userland yet, but the implementation didn't change and was
    tested earlier). I haven't tested yet the new functions.
    Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
    Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
    a7f290da
vdso.c 18.2 KB