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[IA64] Turn on CONFIG_HAVE_UNSTABLE_CLOCK
authorTony Luck <tony.luck@intel.com>
Thu, 15 Jan 2009 18:29:17 +0000 (10:29 -0800)
committerTony Luck <tony.luck@intel.com>
Thu, 15 Jan 2009 18:29:17 +0000 (10:29 -0800)
commit0773a6cf673316440999752e23f8c3d4f85e48b9
tree2d42211a451efb114795f9c1c70810a86174ff3ftree | snapshot (tar.gz zip)
parent7a0b6e01434f77194b86c8051b4c3718da636c64commit | diff
[IA64] Turn on CONFIG_HAVE_UNSTABLE_CLOCK

sched_clock() on ia64 is based on ar.itc, so is never
completely synchronized between cpus. On some platforms
(e.g. certain models of SGI Altix) it may be running at
radically different frequencies.

Based on a patch from Dimitri Sivanich which set this
just for SN2 && GENERIC kernels ... it is needed for
all ia64 machines.

Signed-off-by: Tony Luck <tony.luck@intel.com>
arch/ia64/Kconfig diff | blob | blame | history