Commit-ID: 115631c350bfd3b9cbc0aff75b3975e17c83d3d9 Gitweb: http://git.kernel.org/tip/115631c350bfd3b9cbc0aff75b3975e17c83d3d9 Author: Nicolai Stange <nicstange@xxxxxxxxx> AuthorDate: Thu, 30 Mar 2017 21:53:17 +0200 Committer: John Stultz <john.stultz@xxxxxxxxxx> CommitDate: Fri, 14 Apr 2017 13:11:10 -0700 powerpc/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 powerpc 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@xxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx> Cc: Richard Cochran <richardcochran@xxxxxxxxx> Cc: Prarit Bhargava <prarit@xxxxxxxxxx> Cc: Stephen Boyd <sboyd@xxxxxxxxxxxxxx> Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> Cc: Paul Mackerras <paulus@xxxxxxxxx> Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx> Cc: Oliver O'Halloran <oohall@xxxxxxxxx> Cc: linuxppc-dev@xxxxxxxxxxxxxxxx Acked-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> (powerpc) Signed-off-by: Nicolai Stange <nicstange@xxxxxxxxx> Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx> --- arch/powerpc/kernel/time.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 07b9072..2b33cfa 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -995,8 +995,10 @@ static void __init init_decrementer_clockevent(void) decrementer_clockevent.max_delta_ns = clockevent_delta2ns(decrementer_max, &decrementer_clockevent); + decrementer_clockevent.max_delta_ticks = decrementer_max; decrementer_clockevent.min_delta_ns = clockevent_delta2ns(2, &decrementer_clockevent); + decrementer_clockevent.min_delta_ticks = 2; register_decrementer_clockevent(cpu); } -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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