Will Deacon 037f637767 drivers: clocksource: add support for ARM architected timer event stream ...

The ARM architected timer can generate events (used for waking up
CPUs executing the wfe instruction) at a frequency represented as a
power-of-2 divisor of the clock rate.

An event stream might be used:
- To implement wfe-based timeouts for userspace locking implementations.
- To impose a timeout on a wfe for safeguarding against any programming
  error in case an expected event is not generated.

This patch computes the event stream frequency aiming for a period
of 100us between events. It uses ARM/ARM64 specific backends to configure
and enable the event stream.

Cc: Lorenzo Pieralisi <[email protected]>
Reviewed-by: Catalin Marinas <[email protected]>
Acked-by: Olof Johansson <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
[sudeep: moving ARM/ARM64 changes into separate patches
         and adding Kconfig option]
Signed-off-by: Sudeep KarkadaNagesha <[email protected]>

2013-09-26 09:48:00 +01:00

..

arm_arch_timer.h

drivers: clocksource: add support for ARM architected timer event stream

2013-09-26 09:48:00 +01:00

metag_generic.h

metag: Time keeping

2013-03-02 20:09:22 +00:00

samsung_pwm.h

pwm: Add new pwm-samsung driver

2013-08-12 21:53:22 +02:00