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

[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
...@@ -17,6 +17,7 @@ config IA64 ...@@ -17,6 +17,7 @@ config IA64
select ACPI if (!IA64_HP_SIM) select ACPI if (!IA64_HP_SIM)
select PM if (!IA64_HP_SIM) select PM if (!IA64_HP_SIM)
select ARCH_SUPPORTS_MSI select ARCH_SUPPORTS_MSI
select HAVE_UNSTABLE_SCHED_CLOCK
select HAVE_IDE select HAVE_IDE
select HAVE_OPROFILE select HAVE_OPROFILE
select HAVE_KPROBES select HAVE_KPROBES
......
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