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Date: Mon, 30 Oct 2017 15:29:14 -0700
From: John Stultz <john.stultz@...aro.org>
To: lkml <linux-kernel@...r.kernel.org>
Cc: Arnd Bergmann <arnd@...db.de>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...nel.org>,
Miroslav Lichvar <mlichvar@...hat.com>,
Richard Cochran <richardcochran@...il.com>,
Prarit Bhargava <prarit@...hat.com>,
Stephen Boyd <stephen.boyd@...aro.org>,
John Stultz <john.stultz@...aro.org>
Subject: [PATCH 7/7] time: Move old timekeeping interfaces to timekeeping32.h
From: Arnd Bergmann <arnd@...db.de>
The interfaces based on 'struct timespec' and 'unsigned long' seconds
are no longer recommended for new code, and we are trying to migrate to
ktime_t based interfaces and other y2038-safe variants.
This moves all the legacy interfaces from linux/timekeeping.h into a
new timekeeping32.h to better document this.
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Miroslav Lichvar <mlichvar@...hat.com>
Cc: Richard Cochran <richardcochran@...il.com>
Cc: Prarit Bhargava <prarit@...hat.com>
Cc: Stephen Boyd <stephen.boyd@...aro.org>
Signed-off-by: Arnd Bergmann <arnd@...db.de>
Signed-off-by: John Stultz <john.stultz@...aro.org>
---
include/linux/ktime.h | 1 +
include/linux/timekeeping.h | 137 +-------------------------------------
include/linux/timekeeping32.h | 151 ++++++++++++++++++++++++++++++++++++++++++
3 files changed, 154 insertions(+), 135 deletions(-)
create mode 100644 include/linux/timekeeping32.h
diff --git a/include/linux/ktime.h b/include/linux/ktime.h
index 0c8bd45..5b9fddb 100644
--- a/include/linux/ktime.h
+++ b/include/linux/ktime.h
@@ -270,5 +270,6 @@ static inline ktime_t ms_to_ktime(u64 ms)
}
# include <linux/timekeeping.h>
+# include <linux/timekeeping32.h>
#endif
diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index ddc229f..405beea4e 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -15,27 +15,16 @@ extern void xtime_update(unsigned long ticks);
/*
* Get and set timeofday
*/
-extern void do_gettimeofday(struct timeval *tv);
extern int do_settimeofday64(const struct timespec64 *ts);
extern int do_sys_settimeofday64(const struct timespec64 *tv,
const struct timezone *tz);
/*
* Kernel time accessors
*/
-unsigned long get_seconds(void);
struct timespec64 current_kernel_time64(void);
-/* does not take xtime_lock */
-struct timespec __current_kernel_time(void);
-
-static inline struct timespec current_kernel_time(void)
-{
- struct timespec64 now = current_kernel_time64();
-
- return timespec64_to_timespec(now);
-}
/*
- * timespec based interfaces
+ * timespec64 based interfaces
*/
struct timespec64 get_monotonic_coarse64(void);
extern void getrawmonotonic64(struct timespec64 *ts);
@@ -47,116 +36,6 @@ extern int __getnstimeofday64(struct timespec64 *tv);
extern void getnstimeofday64(struct timespec64 *tv);
extern void getboottime64(struct timespec64 *ts);
-#if BITS_PER_LONG == 64
-/**
- * Deprecated. Use do_settimeofday64().
- */
-static inline int do_settimeofday(const struct timespec *ts)
-{
- return do_settimeofday64(ts);
-}
-
-static inline int __getnstimeofday(struct timespec *ts)
-{
- return __getnstimeofday64(ts);
-}
-
-static inline void getnstimeofday(struct timespec *ts)
-{
- getnstimeofday64(ts);
-}
-
-static inline void ktime_get_ts(struct timespec *ts)
-{
- ktime_get_ts64(ts);
-}
-
-static inline void ktime_get_real_ts(struct timespec *ts)
-{
- getnstimeofday64(ts);
-}
-
-static inline void getrawmonotonic(struct timespec *ts)
-{
- getrawmonotonic64(ts);
-}
-
-static inline struct timespec get_monotonic_coarse(void)
-{
- return get_monotonic_coarse64();
-}
-
-static inline void getboottime(struct timespec *ts)
-{
- return getboottime64(ts);
-}
-#else
-/**
- * Deprecated. Use do_settimeofday64().
- */
-static inline int do_settimeofday(const struct timespec *ts)
-{
- struct timespec64 ts64;
-
- ts64 = timespec_to_timespec64(*ts);
- return do_settimeofday64(&ts64);
-}
-
-static inline int __getnstimeofday(struct timespec *ts)
-{
- struct timespec64 ts64;
- int ret = __getnstimeofday64(&ts64);
-
- *ts = timespec64_to_timespec(ts64);
- return ret;
-}
-
-static inline void getnstimeofday(struct timespec *ts)
-{
- struct timespec64 ts64;
-
- getnstimeofday64(&ts64);
- *ts = timespec64_to_timespec(ts64);
-}
-
-static inline void ktime_get_ts(struct timespec *ts)
-{
- struct timespec64 ts64;
-
- ktime_get_ts64(&ts64);
- *ts = timespec64_to_timespec(ts64);
-}
-
-static inline void ktime_get_real_ts(struct timespec *ts)
-{
- struct timespec64 ts64;
-
- getnstimeofday64(&ts64);
- *ts = timespec64_to_timespec(ts64);
-}
-
-static inline void getrawmonotonic(struct timespec *ts)
-{
- struct timespec64 ts64;
-
- getrawmonotonic64(&ts64);
- *ts = timespec64_to_timespec(ts64);
-}
-
-static inline struct timespec get_monotonic_coarse(void)
-{
- return timespec64_to_timespec(get_monotonic_coarse64());
-}
-
-static inline void getboottime(struct timespec *ts)
-{
- struct timespec64 ts64;
-
- getboottime64(&ts64);
- *ts = timespec64_to_timespec(ts64);
-}
-#endif
-
#define ktime_get_real_ts64(ts) getnstimeofday64(ts)
/*
@@ -241,23 +120,13 @@ extern u64 ktime_get_raw_fast_ns(void);
extern u64 ktime_get_boot_fast_ns(void);
/*
- * Timespec interfaces utilizing the ktime based ones
+ * timespec64 interfaces utilizing the ktime based ones
*/
-static inline void get_monotonic_boottime(struct timespec *ts)
-{
- *ts = ktime_to_timespec(ktime_get_boottime());
-}
-
static inline void get_monotonic_boottime64(struct timespec64 *ts)
{
*ts = ktime_to_timespec64(ktime_get_boottime());
}
-static inline void timekeeping_clocktai(struct timespec *ts)
-{
- *ts = ktime_to_timespec(ktime_get_clocktai());
-}
-
static inline void timekeeping_clocktai64(struct timespec64 *ts)
{
*ts = ktime_to_timespec64(ktime_get_clocktai());
@@ -340,10 +209,8 @@ extern void ktime_get_snapshot(struct system_time_snapshot *systime_snapshot);
*/
extern int persistent_clock_is_local;
-extern void read_persistent_clock(struct timespec *ts);
extern void read_persistent_clock64(struct timespec64 *ts);
extern void read_boot_clock64(struct timespec64 *ts);
-extern int update_persistent_clock(struct timespec now);
extern int update_persistent_clock64(struct timespec64 now);
diff --git a/include/linux/timekeeping32.h b/include/linux/timekeeping32.h
new file mode 100644
index 0000000..af4114d
--- /dev/null
+++ b/include/linux/timekeeping32.h
@@ -0,0 +1,151 @@
+#ifndef _LINUX_TIMEKEEPING32_H
+#define _LINUX_TIMEKEEPING32_H
+/*
+ * These interfaces are all based on the old timespec type
+ * and should get replaced with the timespec64 based versions
+ * over time so we can remove the file here.
+ */
+
+extern void do_gettimeofday(struct timeval *tv);
+unsigned long get_seconds(void);
+
+/* does not take xtime_lock */
+struct timespec __current_kernel_time(void);
+
+static inline struct timespec current_kernel_time(void)
+{
+ struct timespec64 now = current_kernel_time64();
+
+ return timespec64_to_timespec(now);
+}
+
+#if BITS_PER_LONG == 64
+/**
+ * Deprecated. Use do_settimeofday64().
+ */
+static inline int do_settimeofday(const struct timespec *ts)
+{
+ return do_settimeofday64(ts);
+}
+
+static inline int __getnstimeofday(struct timespec *ts)
+{
+ return __getnstimeofday64(ts);
+}
+
+static inline void getnstimeofday(struct timespec *ts)
+{
+ getnstimeofday64(ts);
+}
+
+static inline void ktime_get_ts(struct timespec *ts)
+{
+ ktime_get_ts64(ts);
+}
+
+static inline void ktime_get_real_ts(struct timespec *ts)
+{
+ getnstimeofday64(ts);
+}
+
+static inline void getrawmonotonic(struct timespec *ts)
+{
+ getrawmonotonic64(ts);
+}
+
+static inline struct timespec get_monotonic_coarse(void)
+{
+ return get_monotonic_coarse64();
+}
+
+static inline void getboottime(struct timespec *ts)
+{
+ return getboottime64(ts);
+}
+#else
+/**
+ * Deprecated. Use do_settimeofday64().
+ */
+static inline int do_settimeofday(const struct timespec *ts)
+{
+ struct timespec64 ts64;
+
+ ts64 = timespec_to_timespec64(*ts);
+ return do_settimeofday64(&ts64);
+}
+
+static inline int __getnstimeofday(struct timespec *ts)
+{
+ struct timespec64 ts64;
+ int ret = __getnstimeofday64(&ts64);
+
+ *ts = timespec64_to_timespec(ts64);
+ return ret;
+}
+
+static inline void getnstimeofday(struct timespec *ts)
+{
+ struct timespec64 ts64;
+
+ getnstimeofday64(&ts64);
+ *ts = timespec64_to_timespec(ts64);
+}
+
+static inline void ktime_get_ts(struct timespec *ts)
+{
+ struct timespec64 ts64;
+
+ ktime_get_ts64(&ts64);
+ *ts = timespec64_to_timespec(ts64);
+}
+
+static inline void ktime_get_real_ts(struct timespec *ts)
+{
+ struct timespec64 ts64;
+
+ getnstimeofday64(&ts64);
+ *ts = timespec64_to_timespec(ts64);
+}
+
+static inline void getrawmonotonic(struct timespec *ts)
+{
+ struct timespec64 ts64;
+
+ getrawmonotonic64(&ts64);
+ *ts = timespec64_to_timespec(ts64);
+}
+
+static inline struct timespec get_monotonic_coarse(void)
+{
+ return timespec64_to_timespec(get_monotonic_coarse64());
+}
+
+static inline void getboottime(struct timespec *ts)
+{
+ struct timespec64 ts64;
+
+ getboottime64(&ts64);
+ *ts = timespec64_to_timespec(ts64);
+}
+#endif
+
+/*
+ * Timespec interfaces utilizing the ktime based ones
+ */
+static inline void get_monotonic_boottime(struct timespec *ts)
+{
+ *ts = ktime_to_timespec(ktime_get_boottime());
+}
+
+static inline void timekeeping_clocktai(struct timespec *ts)
+{
+ *ts = ktime_to_timespec(ktime_get_clocktai());
+}
+
+/*
+ * Persistent clock related interfaces
+ */
+extern void read_persistent_clock(struct timespec *ts);
+extern int update_persistent_clock(struct timespec now);
+
+#endif
--
2.7.4
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