[PATCH v2] powerpc/ftrace: add powerpc timebase as a trace clock source
Naveen N. Rao
naveen.n.rao at linux.vnet.ibm.com
Fri Jul 31 15:13:17 AEST 2015
On 2015/04/24 02:24PM, Naveen N Rao wrote:
> Add a new powerpc-specific trace clock using the timebase register,
> similar to x86-tsc. This gives us
> - a fast, monotonic, hardware clock source for trace entries, and
> - a clock that can be used to correlate events across cpus as well as across
> hypervisor and guests.
> Signed-off-by: Naveen N. Rao <naveen.n.rao at linux.vnet.ibm.com>
> Changes since v1:
> - removed unnecessary #ifdef in trace_clock.h
> - changed config build dependency for trace_clock.o from TRACE_CLOCK to TRACING
Michael, can you please pick this up?
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