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ktime: Get rid of the union

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ktime is a union because the initial implementation stored the time in
scalar nanoseconds on 64 bit machine and in a endianess optimized timespec
variant for 32bit machines. The Y2038 cleanup removed the timespec variant
and switched everything to scalar nanoseconds. The union remained, but
become completely pointless.

Get rid of the union and just keep ktime_t as simple typedef of type s64.

The conversion was done with coccinelle and some manual mopping up.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
This commit is contained in:
Thomas Gleixner
2016-12-25 11:38:40 +01:00
parent a5a1d1c291
commit 2456e85535
48 changed files with 200 additions and 227 deletions
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6
kernel/time/timekeeping.c
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@@ -104,7 +104,7 @@ static void tk_set_wall_to_mono(struct timekeeper *tk, struct timespec64 wtm)
*/
set_normalized_timespec64(&tmp, -tk->wall_to_monotonic.tv_sec,
-tk->wall_to_monotonic.tv_nsec);
WARN_ON_ONCE(tk->offs_real.tv64 != timespec64_to_ktime(tmp).tv64);
WARN_ON_ONCE(tk->offs_real != timespec64_to_ktime(tmp));
tk->wall_to_monotonic = wtm;
set_normalized_timespec64(&tmp, -wtm.tv_sec, -wtm.tv_nsec);
tk->offs_real = timespec64_to_ktime(tmp);
@@ -571,7 +571,7 @@ EXPORT_SYMBOL_GPL(pvclock_gtod_unregister_notifier);
static inline void tk_update_leap_state(struct timekeeper *tk)
{
tk->next_leap_ktime = ntp_get_next_leap();
if (tk->next_leap_ktime.tv64 != KTIME_MAX)
if (tk->next_leap_ktime != KTIME_MAX)
/* Convert to monotonic time */
tk->next_leap_ktime = ktime_sub(tk->next_leap_ktime, tk->offs_real);
}
@@ -2250,7 +2250,7 @@ ktime_t ktime_get_update_offsets_now(unsigned int *cwsseq, ktime_t *offs_real,
}
/* Handle leapsecond insertion adjustments */
if (unlikely(base.tv64 >= tk->next_leap_ktime.tv64))
if (unlikely(base >= tk->next_leap_ktime))
*offs_real = ktime_sub(tk->offs_real, ktime_set(1, 0));
} while (read_seqcount_retry(&tk_core.seq, seq));