ftrace minor updates

Status from this message: applied to tip/tracing/urgent - thanks Steve.

Get series with b4

b4 am [email protected]

Versions newest first

#	Subject and files	Size	Replies	Applied
1/2	ftrace: single CPU tracers use CPU clock`kernel/trace/trace.c` `kernel/trace/trace.h` `kernel/trace/trace_irqsoff.c`	+19 -2	6 replies
2/2	ftrace: disable tracing on acpi idle calls`drivers/acpi/processor_idle.c`	+6 -0	1 reply

No Reviewed-by, Acked-by or Tested-by trailers for v1 yet.

Cover letter [PATCH 0/2] ftrace minor updates

The following two patches help the latency tracers of ftrace.

-- Steve