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

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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
This commit is contained in:
Anna-Maria Behnsen 2024-10-09 10:29:03 +02:00 committed by Thomas Gleixner
parent 8c4799b184
commit 10f7c178a9
1 changed files with 4 additions and 2 deletions
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6
kernel/time/timekeeping.c
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@ -45,12 +45,14 @@ enum timekeeping_adv_mode {
* The most important data for readout fits into a single 64 byte * The most important data for readout fits into a single 64 byte
* cache line. * cache line.
*/ */
static struct { struct tk_data {
seqcount_raw_spinlock_t seq; seqcount_raw_spinlock_t seq;
struct timekeeper timekeeper; struct timekeeper timekeeper;
struct timekeeper shadow_timekeeper; struct timekeeper shadow_timekeeper;
raw_spinlock_t lock; raw_spinlock_t lock;
} tk_core ____cacheline_aligned; } ____cacheline_aligned;
static struct tk_data tk_core;
/* flag for if timekeeping is suspended */ /* flag for if timekeeping is suspended */
int __read_mostly timekeeping_suspended; int __read_mostly timekeeping_suspended;