[RFC PATCH v3 1/5] timekeeping: Expose tk->offs_boot via ktime_get_offs_boot_ns
From: Hikaru Nishida <hidden>
Date: 2021-10-20 12:05:06
Also in:
kvmarm, lkml
Subsystem:
the rest, timekeeping, clocksource core, ntp, alarmtimer · Maintainers:
Linus Torvalds, John Stultz, Thomas Gleixner
Expose tk->offs_boot to be used in kvm virtual suspend injection. Signed-off-by: Hikaru Nishida <redacted> --- Changes in v3: - Added this patch. include/linux/timekeeping.h | 2 ++ kernel/time/timekeeping.c | 10 ++++++++++ 2 files changed, 12 insertions(+)
diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index 78a98bdff76d..f7be69c81dab 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h@@ -179,6 +179,8 @@ extern u64 ktime_get_raw_fast_ns(void); extern u64 ktime_get_boot_fast_ns(void); extern u64 ktime_get_real_fast_ns(void); +extern u64 ktime_get_offs_boot_ns(void); + /* * timespec64/time64_t interfaces utilizing the ktime based ones * for API completeness, these could be implemented more efficiently
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index b348749a9fc6..e77580d9f8c1 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c@@ -565,6 +565,16 @@ u64 ktime_get_real_fast_ns(void) } EXPORT_SYMBOL_GPL(ktime_get_real_fast_ns); +/** + * ktime_get_offs_boot_ns - boottime offset to monotonic. + * Return: boottime offset in nanoseconds. + */ +u64 ktime_get_offs_boot_ns(void) +{ + return ktime_to_ns(tk_core.timekeeper.offs_boot); +} +EXPORT_SYMBOL_GPL(ktime_get_offs_boot_ns); + /** * ktime_get_fast_timestamps: - NMI safe timestamps * @snapshot: Pointer to timestamp storage
--
2.33.0.1079.g6e70778dc9-goog
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