From d67f34c19a679436dd2963b588015e119279e7a8 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 17 Sep 2018 14:45:34 +0200 Subject: clocksource: Provide clocksource_arch_init() Architectures have extra archdata in the clocksource, e.g. for VDSO support. There are no sanity checks or general initializations for this available. Add support for that. Signed-off-by: Thomas Gleixner Acked-by: Andy Lutomirski Acked-by: John Stultz Cc: Peter Zijlstra Cc: Matt Rickard Cc: Stephen Boyd Cc: Florian Weimer Cc: "K. Y. Srinivasan" Cc: Vitaly Kuznetsov Cc: devel@linuxdriverproject.org Cc: virtualization@lists.linux-foundation.org Cc: Paolo Bonzini Cc: Arnd Bergmann Cc: Juergen Gross Link: https://lkml.kernel.org/r/20180917130706.973042587@linutronix.de --- kernel/time/Kconfig | 4 ++++ kernel/time/clocksource.c | 2 ++ 2 files changed, 6 insertions(+) (limited to 'kernel/time') diff --git a/kernel/time/Kconfig b/kernel/time/Kconfig index 78eabc41eaa6..58b981f4bb5d 100644 --- a/kernel/time/Kconfig +++ b/kernel/time/Kconfig @@ -12,6 +12,10 @@ config CLOCKSOURCE_WATCHDOG config ARCH_CLOCKSOURCE_DATA bool +# Architecture has extra clocksource init called from registration +config ARCH_CLOCKSOURCE_INIT + bool + # Clocksources require validation of the clocksource against the last # cycle update - x86/TSC misfeature config CLOCKSOURCE_VALIDATE_LAST_CYCLE diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c index 0e6e97a01942..ffe081623aec 100644 --- a/kernel/time/clocksource.c +++ b/kernel/time/clocksource.c @@ -937,6 +937,8 @@ int __clocksource_register_scale(struct clocksource *cs, u32 scale, u32 freq) { unsigned long flags; + clocksource_arch_init(cs); + /* Initialize mult/shift and max_idle_ns */ __clocksource_update_freq_scale(cs, scale, freq); -- cgit