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Message-Id: <20180427134016.2525989-4-arnd@arndb.de>
Date: Fri, 27 Apr 2018 15:40:14 +0200
From: Arnd Bergmann <arnd@...db.de>
To: Thomas Gleixner <tglx@...utronix.de>
Cc: linux-kernel@...r.kernel.org, Stephen Boyd <sboyd@...nel.org>,
John Stultz <john.stultz@...aro.org>, y2038@...ts.linaro.org,
Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 3/5] timekeeping: Standardize on ktime_get_*() naming
The current_kernel_time64, get_monotonic_coarse64, getrawmonotonic64,
get_monotonic_boottime64 and timekeeping_clocktai64 interfaces have
rather inconsistent naming, and they differ in the calling conventions
by passing the output either by reference or as a return value.
Rename them to ktime_get_coarse_real_ts64, ktime_get_coarse_ts64,
ktime_get_raw_ts64, ktime_get_boottime_ts64 and ktime_get_clocktai_ts64
respectively, and provide the interfaces with macros or inline
functions as needed.
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
include/linux/timekeeping.h | 43 ++++++++++++++++++++++++++++++++-----------
include/linux/timekeeping32.h | 14 ++++++++++----
kernel/time/timekeeping.c | 23 +++++++++--------------
3 files changed, 51 insertions(+), 29 deletions(-)
diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index 415dae6bf1f5..3ef9791d7d75 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -19,25 +19,25 @@ extern void xtime_update(unsigned long ticks);
extern int do_settimeofday64(const struct timespec64 *ts);
extern int do_sys_settimeofday64(const struct timespec64 *tv,
const struct timezone *tz);
-/*
- * Kernel time accessors
- */
-struct timespec64 current_kernel_time64(void);
/*
* timespec64 based interfaces
*/
-struct timespec64 get_monotonic_coarse64(void);
-extern void getrawmonotonic64(struct timespec64 *ts);
+extern void ktime_get_raw_ts64(struct timespec64 *ts);
extern void ktime_get_ts64(struct timespec64 *ts);
extern void ktime_get_real_ts64(struct timespec64 *tv);
+extern void ktime_get_coarse_ts64(struct timespec64 *ts);
+extern void ktime_get_coarse_real_ts64(struct timespec64 *ts);
+
+void getboottime64(struct timespec64 *ts);
+
+/*
+ * time64_t base interfaces
+ */
extern time64_t ktime_get_seconds(void);
extern time64_t __ktime_get_real_seconds(void);
extern time64_t ktime_get_real_seconds(void);
-extern void getboottime64(struct timespec64 *ts);
-
-
/*
* ktime_t based interfaces
*/
@@ -123,12 +123,12 @@ extern u64 ktime_get_real_fast_ns(void);
/*
* timespec64 interfaces utilizing the ktime based ones
*/
-static inline void get_monotonic_boottime64(struct timespec64 *ts)
+static inline void ktime_get_boottime_ts64(struct timespec64 *ts)
{
*ts = ktime_to_timespec64(ktime_get_boottime());
}
-static inline void timekeeping_clocktai64(struct timespec64 *ts)
+static inline void ktime_get_clocktai_ts64(struct timespec64 *ts)
{
*ts = ktime_to_timespec64(ktime_get_clocktai());
}
@@ -212,5 +212,26 @@ 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
diff --git a/include/linux/timekeeping32.h b/include/linux/timekeeping32.h
index 5abff52d07fd..8762c2f45f8b 100644
--- a/include/linux/timekeeping32.h
+++ b/include/linux/timekeeping32.h
@@ -11,9 +11,11 @@ unsigned long get_seconds(void);
static inline struct timespec current_kernel_time(void)
{
- struct timespec64 now = current_kernel_time64();
+ struct timespec64 ts64;
+
+ ktime_get_coarse_real_ts64(&ts64);
- return timespec64_to_timespec(now);
+ return timespec64_to_timespec(ts64);
}
/**
@@ -55,13 +57,17 @@ static inline void getrawmonotonic(struct timespec *ts)
{
struct timespec64 ts64;
- getrawmonotonic64(&ts64);
+ ktime_get_raw_ts64(&ts64);
*ts = timespec64_to_timespec(ts64);
}
static inline struct timespec get_monotonic_coarse(void)
{
- return timespec64_to_timespec(get_monotonic_coarse64());
+ struct timespec64 ts64;
+
+ ktime_get_coarse_ts64(&ts64);
+
+ return timespec64_to_timespec(ts64);
}
static inline void getboottime(struct timespec *ts)
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 7bbc7a6e6095..ed9b74ec9c0b 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -1391,12 +1391,12 @@ int timekeeping_notify(struct clocksource *clock)
}
/**
- * getrawmonotonic64 - Returns the raw monotonic time in a timespec
+ * ktime_get_raw_ts64 - Returns the raw monotonic time in a timespec
* @ts: pointer to the timespec64 to be set
*
* Returns the raw monotonic time (completely un-modified by ntp)
*/
-void getrawmonotonic64(struct timespec64 *ts)
+void ktime_get_raw_ts64(struct timespec64 *ts)
{
struct timekeeper *tk = &tk_core.timekeeper;
unsigned long seq;
@@ -1412,7 +1412,7 @@ void getrawmonotonic64(struct timespec64 *ts)
ts->tv_nsec = 0;
timespec64_add_ns(ts, nsecs);
}
-EXPORT_SYMBOL(getrawmonotonic64);
+EXPORT_SYMBOL(ktime_get_raw_ts64);
/**
@@ -2114,23 +2114,20 @@ unsigned long get_seconds(void)
}
EXPORT_SYMBOL(get_seconds);
-struct timespec64 current_kernel_time64(void)
+void ktime_get_coarse_real_ts64(struct timespec64 *ts)
{
struct timekeeper *tk = &tk_core.timekeeper;
- struct timespec64 now;
unsigned long seq;
do {
seq = read_seqcount_begin(&tk_core.seq);
- now = tk_xtime(tk);
+ *ts = tk_xtime(tk);
} while (read_seqcount_retry(&tk_core.seq, seq));
-
- return now;
}
-EXPORT_SYMBOL(current_kernel_time64);
+EXPORT_SYMBOL(ktime_get_coarse_real_ts64);
-struct timespec64 get_monotonic_coarse64(void)
+void ktime_get_coarse_ts64(struct timespec64 *ts)
{
struct timekeeper *tk = &tk_core.timekeeper;
struct timespec64 now, mono;
@@ -2143,12 +2140,10 @@ struct timespec64 get_monotonic_coarse64(void)
mono = tk->wall_to_monotonic;
} while (read_seqcount_retry(&tk_core.seq, seq));
- set_normalized_timespec64(&now, now.tv_sec + mono.tv_sec,
+ set_normalized_timespec64(ts, now.tv_sec + mono.tv_sec,
now.tv_nsec + mono.tv_nsec);
-
- return now;
}
-EXPORT_SYMBOL(get_monotonic_coarse64);
+EXPORT_SYMBOL(ktime_get_coarse_ts64);
/*
* Must hold jiffies_lock
--
2.9.0
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