[Bug runtime/4569] _stp_gettimeofday_ns doesn't work for some archs

["jistone at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=4569

--- Comment #2 from Josh Stone <jistone at redhat dot com> 2012-11-20 22:39:43 UTC ---
(In reply to comment #1)
> In theory this should allow allow gtod and OVERLOAD2 test to work. The Fedora
> arm 18 kernel should have the correct CONF* set, but with the  Linux wecf18arm
> 3.6.3-3.fc18.armv7hl.tegra still seeing:
> 
> FAIL: gtod (0)
> FAIL: OVERLOAD2 no expected error

Perhaps try testing read_current_timer() directly to see what's returned?  The
implementation starts with a check that may return -ENXIO.  The CONF settings
only tell you what's in the kernel build, but at runtime it might still not
find supported timer hardware.

Also, _stp_gettimeofday_ns has a kludge for arm that will need to be adapted
for when get_cycles appears to work (i.e. when it's returning non-zero).

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