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authorNicolai Stange <nicstange@gmail.com>2017-03-30 21:43:32 +0200
committerJohn Stultz <john.stultz@linaro.org>2017-04-14 13:11:12 -0700
commita60a9fb8fb52768bd19cd8c0893f4c0432acb10e (patch)
tree55498f6ebc1d8cf65774c4c691191ef26c1457ce /arch/hexagon/kernel
parentx86/lguest/timer: Set ->min_delta_ticks and ->max_delta_ticks (diff)
downloadlinux-dev-a60a9fb8fb52768bd19cd8c0893f4c0432acb10e.tar.xz
linux-dev-a60a9fb8fb52768bd19cd8c0893f4c0432acb10e.zip
hexagon/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 hexagon 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: Richard Kuo <rkuo@codeaurora.org> Cc: linux-hexagon@vger.kernel.org Acked-by: Richard Kuo <rkuo@codeaurora.org> Signed-off-by: Nicolai Stange <nicstange@gmail.com> Signed-off-by: John Stultz <john.stultz@linaro.org>
Diffstat (limited to 'arch/hexagon/kernel')
-rw-r--r--arch/hexagon/kernel/time.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/hexagon/kernel/time.c b/arch/hexagon/kernel/time.c
index ff4e9bf995e9..29b1f57116c8 100644
--- a/arch/hexagon/kernel/time.c
+++ b/arch/hexagon/kernel/time.c
@@ -199,7 +199,9 @@ void __init time_init_deferred(void)
clockevents_calc_mult_shift(ce_dev, sleep_clk_freq, 4);
ce_dev->max_delta_ns = clockevent_delta2ns(0x7fffffff, ce_dev);
+ ce_dev->max_delta_ticks = 0x7fffffff;
ce_dev->min_delta_ns = clockevent_delta2ns(0xf, ce_dev);
+ ce_dev->min_delta_ticks = 0xf;
#ifdef CONFIG_SMP
setup_percpu_clockdev();