kernel/linux.git/drivers/clocksource/timer-mp-csky.c, branch v6.12.80Linux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=v6.12.802018-12-31T15:17:23+00:00clocksource/drivers/c-sky: fixup ftrace call-graph panic2018-12-31T15:17:23+00:00Guo Renren_guo@c-sky.com2018-12-31T12:52:41+00:00urn:sha1:0c87bb0e872cbbad59a965fc67668364066aa85e
We must add notrace on sched_clock_read, because it's called
by ftrace_graph_caller.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
clocksource/drivers/c-sky: fixup qemu fail to bootup sometimes.2018-12-31T14:58:48+00:00Guo Renren_guo@c-sky.com2018-12-20T07:21:41+00:00urn:sha1:1d95fe4d3de42e915bc22d5fd6cd4de103c5e517
Timer startup must after timer_irq_enable. For qemu, timer tick
irq hanppens but irq not enable, so it will cause qemu boot failed.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Tested-by: Liu Zhiwei <zhiwei_liu@c-sky.com>
clocksource/drivers/c-sky: Add C-SKY SMP timer2018-11-02T18:39:54+00:00Guo Renren_guo@c-sky.com2018-11-02T16:51:28+00:00urn:sha1:a7ad38b0dd3c1ba8d6e5a55241e875e9db8331ab
The driver is for C-SKY SMP timer. It only supports oneshot event
and 32bit overflow for clocksource. Per cpu core has one timer and
all timers share one clock-counter-input from the same clocksource.
This use mfcr&mtcr instructions to access the regs.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>