timekeeping: Define a struct type for tk_core to make it reusable

The struct tk_core uses is not reusable. As long as there is only a single
timekeeper, this is not a problem. But when the timekeeper infrastructure
will be reused for per ptp clock timekeepers, an explicit struct type is
required.

Define struct tk_data as explicit struct type for tk_core.

Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: John Stultz <jstultz@google.com>
Link: https://lore.kernel.org/all/20241009-devel-anna-maria-b4-timers-ptp-timekeeping-v2-10-554456a44a15@linutronix.de

diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 5392a66e02b6183d7380f0567a08076b6b2b6a43..d520c11e912de34b4ef1ae58e023e2f3ab643cee 100644 (file)
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -45,12 +45,14 @@ enum timekeeping_adv_mode {
  * The most important data for readout fits into a single 64 byte
  * cache line.
  */
-static struct {
+struct tk_data {
        seqcount_raw_spinlock_t seq;
        struct timekeeper       timekeeper;
        struct timekeeper       shadow_timekeeper;
        raw_spinlock_t          lock;
-} tk_core ____cacheline_aligned;
+} ____cacheline_aligned;
+
+static struct tk_data tk_core;
 
 /* flag for if timekeeping is suspended */
 int __read_mostly timekeeping_suspended;