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| author | Thomas Gleixner <tglx@kernel.org> | 2026-05-29 21:59:55 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@kernel.org> | 2026-06-02 11:39:57 +0200 |
| commit | ef22786707e3967b539c3b1e6b5c7ea8b408430f (patch) | |
| tree | 0f22c35815ead57f7e01bc7b8803a9988e801428 /kernel/time | |
| parent | eba302268a019275fd6ff452d4ff0b94fef11c76 (diff) | |
| download | linux-next-ef22786707e3967b539c3b1e6b5c7ea8b408430f.tar.gz linux-next-ef22786707e3967b539c3b1e6b5c7ea8b408430f.zip | |
timekeeping: Use system_time_snapshot::systime/monoraw instead of ::real/raw
system_time_snapshot::systime provides the same information as
system_time_snapshot::real when the snapshot was taken with
ktime_get_snapshot_id(CLOCK_REALTIME).
Convert the history interpolation over to use 'systime' and 'monoraw' as
'real/raw' are going away once all users are converted.
As a side effect this is the first step to support CLOCK_AUX with
get_device_crosstime_stamp() and the history interpolation.
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Tested-by: David Woodhouse <dwmw@amazon.co.uk>
Tested-by: Arthur Kiyanovski <akiyano@amazon.com>
Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20260529195557.024415766@kernel.org
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/timekeeping.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 0053dc0010f4..ccd04addb021 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -1323,7 +1323,7 @@ static int adjust_historical_crosststamp(struct system_time_snapshot *history, * partial_history_cycles / total_history_cycles */ corr_raw = (u64)ktime_to_ns( - ktime_sub(ts->sys_monoraw, history->raw)); + ktime_sub(ts->sys_monoraw, history->monoraw)); ret = scale64_check_overflow(partial_history_cycles, total_history_cycles, &corr_raw); if (ret) @@ -1341,7 +1341,7 @@ static int adjust_historical_crosststamp(struct system_time_snapshot *history, (corr_raw, tk->tkr_mono.mult, tk->tkr_raw.mult); } else { corr_real = (u64)ktime_to_ns( - ktime_sub(ts->sys_realtime, history->real)); + ktime_sub(ts->sys_realtime, history->systime)); ret = scale64_check_overflow(partial_history_cycles, total_history_cycles, &corr_real); if (ret) @@ -1350,8 +1350,8 @@ static int adjust_historical_crosststamp(struct system_time_snapshot *history, /* Fixup monotonic raw and real time time values */ if (interp_forward) { - ts->sys_monoraw = ktime_add_ns(history->raw, corr_raw); - ts->sys_realtime = ktime_add_ns(history->real, corr_real); + ts->sys_monoraw = ktime_add_ns(history->monoraw, corr_raw); + ts->sys_realtime = ktime_add_ns(history->systime, corr_real); } else { ts->sys_monoraw = ktime_sub_ns(ts->sys_monoraw, corr_raw); ts->sys_realtime = ktime_sub_ns(ts->sys_realtime, corr_real); |