From b77f41618c2647e80ee45d6609d95b3d4a10e372 Mon Sep 17 00:00:00 2001 From: Nicolai Stange Date: Thu, 30 Mar 2017 22:03:41 +0200 Subject: [PATCH] x86/lguest/timer: 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 x86 arch's lguest 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 Cc: Thomas Gleixner Cc: Daniel Lezcano Cc: Richard Cochran Cc: Prarit Bhargava Cc: Stephen Boyd Cc: Rusty Russell Cc: "H. Peter Anvin" Cc: x86@kernel.org Cc: Paul Bolle Cc: Andy Lutomirski Cc: Juergen Gross Cc: "Luis R. Rodriguez" Cc: lguest@lists.ozlabs.org Acked-by: Rusty Russell Signed-off-by: Nicolai Stange Signed-off-by: John Stultz --- arch/x86/lguest/boot.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c index d3289d7e78fa..3e4bf887a246 100644 --- a/arch/x86/lguest/boot.c +++ b/arch/x86/lguest/boot.c @@ -994,7 +994,9 @@ static struct clock_event_device lguest_clockevent = { .mult = 1, .shift = 0, .min_delta_ns = LG_CLOCK_MIN_DELTA, + .min_delta_ticks = LG_CLOCK_MIN_DELTA, .max_delta_ns = LG_CLOCK_MAX_DELTA, + .max_delta_ticks = LG_CLOCK_MAX_DELTA, }; /*