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authorLinus Torvalds <torvalds@linux-foundation.org>2018-06-04 21:02:18 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-06-04 21:02:18 -0700
commitba252f16e4433e7599fec986e77722e6d0eed186 (patch)
tree01cdf643009b18091c8d8c7630accb5a82f01ba8 /kernel
parent0bbcce5d1ef3f771a349896f1c7574d20dc6f4bd (diff)
parente27c49291a7fe9dc415c9fcab5bd781ec82dfe04 (diff)
Merge branch 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull time/Y2038 updates from Thomas Gleixner: - Consolidate SySV IPC UAPI headers - Convert SySV IPC to the new COMPAT_32BIT_TIME mechanism - Cleanup the core interfaces and standardize on the ktime_get_* naming convention. - Convert the X86 platform ops to timespec64 - Remove the ugly temporary timespec64 hack * 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (22 commits) x86: Convert x86_platform_ops to timespec64 timekeeping: Add more coarse clocktai/boottime interfaces timekeeping: Add ktime_get_coarse_with_offset timekeeping: Standardize on ktime_get_*() naming timekeeping: Clean up ktime_get_real_ts64 timekeeping: Remove timespec64 hack y2038: ipc: Redirect ipc(SEMTIMEDOP, ...) to compat_ksys_semtimedop y2038: ipc: Enable COMPAT_32BIT_TIME y2038: ipc: Use __kernel_timespec y2038: ipc: Report long times to user space y2038: ipc: Use ktime_get_real_seconds consistently y2038: xtensa: Extend sysvipc data structures y2038: powerpc: Extend sysvipc data structures y2038: sparc: Extend sysvipc data structures y2038: parisc: Extend sysvipc data structures y2038: mips: Extend sysvipc data structures y2038: arm64: Extend sysvipc compat data structures y2038: s390: Remove unneeded ipc uapi header files y2038: ia64: Remove unneeded ipc uapi header files y2038: alpha: Remove unneeded ipc uapi header files ...
Diffstat (limited to 'kernel')
-rw-r--r--kernel/time/time.c2
-rw-r--r--kernel/time/timekeeping.c73
2 files changed, 34 insertions, 41 deletions
diff --git a/kernel/time/time.c b/kernel/time/time.c
index ccd751e95fcb..6fa99213fc72 100644
--- a/kernel/time/time.c
+++ b/kernel/time/time.c
@@ -407,7 +407,6 @@ time64_t mktime64(const unsigned int year0, const unsigned int mon0,
}
EXPORT_SYMBOL(mktime64);
-#if __BITS_PER_LONG == 32
/**
* set_normalized_timespec - set timespec sec and nsec parts and normalize
*
@@ -468,7 +467,6 @@ struct timespec ns_to_timespec(const s64 nsec)
return ts;
}
EXPORT_SYMBOL(ns_to_timespec);
-#endif
/**
* ns_to_timeval - Convert nanoseconds to timeval
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 49cbceef5deb..4786df904c22 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -705,18 +705,19 @@ static void timekeeping_forward_now(struct timekeeper *tk)
}
/**
- * __getnstimeofday64 - Returns the time of day in a timespec64.
+ * ktime_get_real_ts64 - Returns the time of day in a timespec64.
* @ts: pointer to the timespec to be set
*
- * Updates the time of day in the timespec.
- * Returns 0 on success, or -ve when suspended (timespec will be undefined).
+ * Returns the time of day in a timespec64 (WARN if suspended).
*/
-int __getnstimeofday64(struct timespec64 *ts)
+void ktime_get_real_ts64(struct timespec64 *ts)
{
struct timekeeper *tk = &tk_core.timekeeper;
unsigned long seq;
u64 nsecs;
+ WARN_ON(timekeeping_suspended);
+
do {
seq = read_seqcount_begin(&tk_core.seq);
@@ -727,28 +728,8 @@ int __getnstimeofday64(struct timespec64 *ts)
ts->tv_nsec = 0;
timespec64_add_ns(ts, nsecs);
-
- /*
- * Do not bail out early, in case there were callers still using
- * the value, even in the face of the WARN_ON.
- */
- if (unlikely(timekeeping_suspended))
- return -EAGAIN;
- return 0;
-}
-EXPORT_SYMBOL(__getnstimeofday64);
-
-/**
- * getnstimeofday64 - Returns the time of day in a timespec64.
- * @ts: pointer to the timespec64 to be set
- *
- * Returns the time of day in a timespec64 (WARN if suspended).
- */
-void getnstimeofday64(struct timespec64 *ts)
-{
- WARN_ON(__getnstimeofday64(ts));
}
-EXPORT_SYMBOL(getnstimeofday64);
+EXPORT_SYMBOL(ktime_get_real_ts64);
ktime_t ktime_get(void)
{
@@ -814,6 +795,25 @@ ktime_t ktime_get_with_offset(enum tk_offsets offs)
}
EXPORT_SYMBOL_GPL(ktime_get_with_offset);
+ktime_t ktime_get_coarse_with_offset(enum tk_offsets offs)
+{
+ struct timekeeper *tk = &tk_core.timekeeper;
+ unsigned int seq;
+ ktime_t base, *offset = offsets[offs];
+
+ WARN_ON(timekeeping_suspended);
+
+ do {
+ seq = read_seqcount_begin(&tk_core.seq);
+ base = ktime_add(tk->tkr_mono.base, *offset);
+
+ } while (read_seqcount_retry(&tk_core.seq, seq));
+
+ return base;
+
+}
+EXPORT_SYMBOL_GPL(ktime_get_coarse_with_offset);
+
/**
* ktime_mono_to_any() - convert mononotic time to any other time
* @tmono: time to convert.
@@ -1410,12 +1410,12 @@ 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;
@@ -1431,7 +1431,7 @@ void getrawmonotonic64(struct timespec64 *ts)
ts->tv_nsec = 0;
timespec64_add_ns(ts, nsecs);
}
-EXPORT_SYMBOL(getrawmonotonic64);
+EXPORT_SYMBOL(ktime_get_raw_ts64);
/**
@@ -2133,23 +2133,20 @@ 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;
@@ -2162,12 +2159,10 @@ 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