diff options
| author | Anna-Maria Behnsen <anna-maria@linutronix.de> | 2025-05-19 10:33:19 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2025-06-19 14:28:22 +0200 |
| commit | f12b45862c4dcb9c2937b83ed730e473b9a76cbf (patch) | |
| tree | dc98d49d811b0abf36e864640712307f0de41fdf /kernel/time | |
| parent | 7e55b6ba1fe6987638160e5f8216288f38043759 (diff) | |
timekeeping: Introduce timekeeper ID
As long as there is only a single timekeeper, there is no need to clarify
which timekeeper is used. But with the upcoming reusage of the timekeeper
infrastructure for auxiliary clock timekeepers, an ID is required to
differentiate.
Introduce an enum for timekeeper IDs, introduce a field in struct tk_data
to store this timekeeper id and add also initialization. The id struct
field is added at the end of the second cachline, as there is a 4 byte hole
anyway.
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/20250519083025.842476378@linutronix.de
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/timekeeping.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index fb1da87a92f1..f4692fc2ea6b 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -1663,10 +1663,11 @@ read_persistent_wall_and_boot_offset(struct timespec64 *wall_time, *boot_offset = ns_to_timespec64(local_clock()); } -static __init void tkd_basic_setup(struct tk_data *tkd) +static __init void tkd_basic_setup(struct tk_data *tkd, enum timekeeper_ids tk_id) { raw_spin_lock_init(&tkd->lock); seqcount_raw_spinlock_init(&tkd->seq, &tkd->lock); + tkd->timekeeper.id = tkd->shadow_timekeeper.id = tk_id; } /* @@ -1696,7 +1697,7 @@ void __init timekeeping_init(void) struct timekeeper *tks = &tk_core.shadow_timekeeper; struct clocksource *clock; - tkd_basic_setup(&tk_core); + tkd_basic_setup(&tk_core, TIMEKEEPER_CORE); read_persistent_wall_and_boot_offset(&wall_time, &boot_offset); if (timespec64_valid_settod(&wall_time) && |