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authorNicolai Stange <nicstange@gmail.com>2017-03-30 21:55:55 +0200
committerJohn Stultz <john.stultz@linaro.org>2017-04-14 13:11:20 -0700
commitc5d710654c0eb9a33d32aadea4863442461cf847 (patch)
tree39cc85388288fa1b894a82a4f832313f4016363c /arch
parent06c546110b0dafbc96c6eaf00aaa5835a18408c1 (diff)
downloadlinux-c5d710654c0eb9a33d32aadea4863442461cf847.tar.bz2
score/time: Set ->min_delta_ticks and ->max_delta_ticks
In preparation for making the clockevents core NTP correction aware, all clockevent device drivers must set ->min_delta_ticks and ->max_delta_ticks rather than ->min_delta_ns and ->max_delta_ns: a clockevent device's rate is going to change dynamically and thus, the ratio of ns to ticks ceases to stay invariant. Make the score arch's clockevent driver initialize these fields properly. This patch alone doesn't introduce any change in functionality as the clockevents core still looks exclusively at the (untouched) ->min_delta_ns and ->max_delta_ns. As soon as this has changed, a followup patch will purge the initialization of ->min_delta_ns and ->max_delta_ns from this driver. Cc: Ingo Molnar <mingo@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: Chen Liqin <liqin.linux@gmail.com> Cc: Lennox Wu <lennox.wu@gmail.com> Signed-off-by: Nicolai Stange <nicstange@gmail.com> Signed-off-by: John Stultz <john.stultz@linaro.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/score/kernel/time.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/score/kernel/time.c b/arch/score/kernel/time.c
index 679b8d7b0350..29aafc741f69 100644
--- a/arch/score/kernel/time.c
+++ b/arch/score/kernel/time.c
@@ -81,8 +81,10 @@ void __init time_init(void)
score_clockevent.shift);
score_clockevent.max_delta_ns = clockevent_delta2ns((u32)~0,
&score_clockevent);
+ score_clockevent.max_delta_ticks = (u32)~0;
score_clockevent.min_delta_ns = clockevent_delta2ns(50,
&score_clockevent) + 1;
+ score_clockevent.min_delta_ticks = 50;
score_clockevent.cpumask = cpumask_of(0);
clockevents_register_device(&score_clockevent);
}