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clocksource/drivers/tcb_clksrc: Use 32 bit tcb as sched_clock
authorDavid Engraf <david.engraf@sysgo.com>
Wed, 11 Jan 2017 13:50:59 +0000 (14:50 +0100)
committerDaniel Lezcano <daniel.lezcano@linaro.org>
Tue, 7 Feb 2017 19:58:30 +0000 (20:58 +0100)
commit7b9f1d16e6d1268ed45d98b36c77f8920e7a209e
tree3a7150bf92e557609672906774f7e1e32a87127btree | snapshot (tar.gz zip)
parent4750535bc94b86fde06b0e698d6bac738b020be4commit | diff
clocksource/drivers/tcb_clksrc: Use 32 bit tcb as sched_clock

On newer boards the TC can be read as single 32 bit value without locking.
Thus the clock can be used as reference for sched_clock which is much more
accurate than the jiffies implementation.

Tested on a Atmel SAMA5D2 board.

Signed-off-by: David Engraf <david.engraf@sysgo.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
drivers/clocksource/tcb_clksrc.c diff | blob | blame | history
Motorola kernel-slsi