tree acc265ff78963bf83a18e14782af352d613d893f
parent d6df3576e6b4bcf765f5ace69915b4fa4a7ee1c3
author Jisheng Zhang <jszhang@marvell.com> 1445328156 +0800
committer Daniel Lezcano <daniel.lezcano@linaro.org> 1445905998 +0100

clocksource/drivers/pistachio: Prevent ftrace recursion

Currently pistachio can be used as a scheduler clock. We properly marked
pistachio_read_sched_clock() as notrace but we then call another function
pistachio_clocksource_read_cycles() that _wasn't_ notrace.

Having a traceable function in the sched_clock() path leads to a recursion
within ftrace and a kernel crash.

Fix this by adding notrace attribute to the pistachio_clocksource_read_cycles()
function.

Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>