diff options
| author | Mark Rutland <mark.rutland@arm.com> | 2013-06-03 13:33:53 -0700 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2013-06-24 22:27:37 +0200 |
| commit | 064706514ec3fea740c2656e03c4f01f6a551ac4 (patch) | |
| tree | 84b20f418dc6939aed90184fbeaafa02a3c147b5 /drivers/clocksource/Makefile | |
| parent | 70e5975d3a04be5479a28eec4a2fb10f98ad2785 (diff) | |
| download | linux-064706514ec3fea740c2656e03c4f01f6a551ac4.tar.bz2 | |
clocksource: Add generic dummy timer driver
Several architectures have a dummy timer driver tightly coupled with
their broadcast code to support machines without cpu-local timers (or
where there is a lack of driver support).
Since 12ad100046: "clockevents: Add generic timer broadcast function"
it's been possible to write broadcast-capable timer drivers decoupled
from the broadcast mechanism. We can use this functionality to implement
a generic dummy timer driver that can be shared by all architectures
with generic tick broadcast (ARCH_HAS_TICK_BROADCAST).
This patch implements a generic dummy timer using this facility.
[sboyd: Make percpu data static, use __this_cpu_ptr(), move to
early_initcall to properly register on each CPU, only
register if more than one CPU possible]
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>,
Cc: John Stultz <john.stultz@linaro.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1370291642-13259-3-git-send-email-sboyd@codeaurora.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/clocksource/Makefile')
| -rw-r--r-- | drivers/clocksource/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile index 4853ea0f8fd5..9ba8b4d867e3 100644 --- a/drivers/clocksource/Makefile +++ b/drivers/clocksource/Makefile @@ -31,3 +31,4 @@ obj-$(CONFIG_VF_PIT_TIMER) += vf_pit_timer.o obj-$(CONFIG_ARM_ARCH_TIMER) += arm_arch_timer.o obj-$(CONFIG_CLKSRC_METAG_GENERIC) += metag_generic.o +obj-$(CONFIG_ARCH_HAS_TICK_BROADCAST) += dummy_timer.o |