From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/include/linux/timekeeping.h | 57 +++++++++++++++++++++++----------------------------------
1 files changed, 23 insertions(+), 34 deletions(-)
diff --git a/kernel/include/linux/timekeeping.h b/kernel/include/linux/timekeeping.h
index 992fa3d..7f7e4a3 100644
--- a/kernel/include/linux/timekeeping.h
+++ b/kernel/include/linux/timekeeping.h
@@ -159,12 +159,12 @@
return ktime_to_ns(ktime_get_real());
}
-static inline u64 ktime_get_boot_ns(void)
+static inline u64 ktime_get_boottime_ns(void)
{
return ktime_to_ns(ktime_get_boottime());
}
-static inline u64 ktime_get_tai_ns(void)
+static inline u64 ktime_get_clocktai_ns(void)
{
return ktime_to_ns(ktime_get_clocktai());
}
@@ -223,8 +223,20 @@
extern void timekeeping_inject_sleeptime64(const struct timespec64 *delta);
/*
+ * struct ktime_timestanps - Simultaneous mono/boot/real timestamps
+ * @mono: Monotonic timestamp
+ * @boot: Boottime timestamp
+ * @real: Realtime timestamp
+ */
+struct ktime_timestamps {
+ u64 mono;
+ u64 boot;
+ u64 real;
+};
+
+/**
* struct system_time_snapshot - simultaneous raw/real time capture with
- * counter value
+ * counter value
* @cycles: Clocksource counter value to produce the system times
* @real: Realtime system time
* @raw: Monotonic raw system time
@@ -239,9 +251,9 @@
u8 cs_was_changed_seq;
};
-/*
+/**
* struct system_device_crosststamp - system/device cross-timestamp
- * (syncronized capture)
+ * (synchronized capture)
* @device: Device time
* @sys_realtime: Realtime simultaneous with device time
* @sys_monoraw: Monotonic raw simultaneous with device time
@@ -252,12 +264,12 @@
ktime_t sys_monoraw;
};
-/*
+/**
* struct system_counterval_t - system counter value with the pointer to the
- * corresponding clocksource
+ * corresponding clocksource
* @cycles: System counter value
* @cs: Clocksource corresponding to system counter value. Used by
- * timekeeping code to verify comparibility of two cycle values
+ * timekeeping code to verify comparibility of two cycle values
*/
struct system_counterval_t {
u64 cycles;
@@ -280,6 +292,9 @@
*/
extern void ktime_get_snapshot(struct system_time_snapshot *systime_snapshot);
+/* NMI safe mono/boot/realtime timestamps */
+extern void ktime_get_fast_timestamps(struct ktime_timestamps *snap);
+
/*
* Persistent clock related interfaces
*/
@@ -289,31 +304,5 @@
void read_persistent_wall_and_boot_offset(struct timespec64 *wall_clock,
struct timespec64 *boot_offset);
extern int update_persistent_clock64(struct timespec64 now);
-
-/*
- * deprecated aliases, don't use in new code
- */
-#define getnstimeofday64(ts) ktime_get_real_ts64(ts)
-#define get_monotonic_boottime64(ts) ktime_get_boottime_ts64(ts)
-#define getrawmonotonic64(ts) ktime_get_raw_ts64(ts)
-#define timekeeping_clocktai64(ts) ktime_get_clocktai_ts64(ts)
-
-static inline struct timespec64 current_kernel_time64(void)
-{
- struct timespec64 ts;
-
- ktime_get_coarse_real_ts64(&ts);
-
- return ts;
-}
-
-static inline struct timespec64 get_monotonic_coarse64(void)
-{
- struct timespec64 ts;
-
- ktime_get_coarse_ts64(&ts);
-
- return ts;
-}
#endif
--
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