Commit 0773a6cf authored by Tony Luck's avatar Tony Luck
Browse files

[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: default avatarTony Luck <tony.luck@intel.com>
parent 7a0b6e01

arch/ia64/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ config IA64 
	select ACPI if (!IA64_HP_SIM)

	select PM if (!IA64_HP_SIM)

	select ARCH_SUPPORTS_MSI

	select HAVE_UNSTABLE_SCHED_CLOCK

	select HAVE_IDE

	select HAVE_OPROFILE

	select HAVE_KPROBES

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