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timekeeping: Refactor timekeeping helpers

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Simplify the usage of timekeeping sanity checking, in preparation for
consolidating timekeeping helpers. This works towards eliminating
timekeeping_delta_to_ns() in favour of timekeeping_cycles_to_ns().

No functional change.

Suggested-by: Thomas Gleixner <[email protected]>
Signed-off-by: Adrian Hunter <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
This commit is contained in:
Adrian Hunter authored and Thomas Gleixner committed 2024-04-08 15:03:08 +02:00
1 parent 670be12ba8
commit e8e9d21a5d
1 file changed
+6 -14
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kernel/time/timekeeping.c
+6 -14
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@@ -237,7 +237,7 @@ static void timekeeping_check_update(struct timekeeper *tk, u64 offset)
}
}
static inline u64 timekeeping_get_delta(const struct tk_read_base *tkr)
static inline u64 timekeeping_debug_get_delta(const struct tk_read_base *tkr)
{
struct timekeeper *tk = &tk_core.timekeeper;
u64 now, last, mask, max, delta;
@@ -281,17 +281,9 @@ static inline u64 timekeeping_get_delta(const struct tk_read_base *tkr)
static inline void timekeeping_check_update(struct timekeeper *tk, u64 offset)
{
}
static inline u64 timekeeping_get_delta(const struct tk_read_base *tkr)
static inline u64 timekeeping_debug_get_delta(const struct tk_read_base *tkr)
{
u64 cycle_now, delta;
/* read clocksource */
cycle_now = tk_clock_read(tkr);
/* calculate the delta since the last update_wall_time */
delta = clocksource_delta(cycle_now, tkr->cycle_last, tkr->mask);
return delta;
BUG();
}
#endif
@@ -396,10 +388,10 @@ static __always_inline u64 __timekeeping_get_ns(const struct tk_read_base *tkr)
static inline u64 timekeeping_get_ns(const struct tk_read_base *tkr)
{
u64 delta;
if (IS_ENABLED(CONFIG_DEBUG_TIMEKEEPING))
return timekeeping_delta_to_ns(tkr, timekeeping_debug_get_delta(tkr));
delta = timekeeping_get_delta(tkr);
return timekeeping_delta_to_ns(tkr, delta);
return __timekeeping_get_ns(tkr);
}
/**