Now that all users are converted it's possible to enable snapshotting of CLOCK_AUX time. The underlying clocksource is the same as for all other CLOCK variants.
Signed-off-by: Thomas Gleixner <[email protected]> --- kernel/time/timekeeping.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -67,6 +67,7 @@ static inline bool tk_is_aux(const struc { return tk->id >= TIMEKEEPER_AUX_FIRST && tk->id <= TIMEKEEPER_AUX_LAST; } +static inline struct tk_data *aux_get_tk_data(clockid_t id); #else static inline bool tk_get_aux_ts64(unsigned int tkid, struct timespec64 *ts) { @@ -77,6 +78,10 @@ static inline bool tk_is_aux(const struc { return false; } +static inline struct tk_data *aux_get_tk_data(clockid_t id) +{ + return NULL; +} #endif static inline void tk_update_aux_offs(struct timekeeper *tk, ktime_t offs) @@ -1218,6 +1223,12 @@ bool ktime_get_snapshot_id(struct system tkd = &tk_core; offs = &tk_core.timekeeper.offs_boot; break; + case CLOCK_AUX ... CLOCK_AUX_LAST: + tkd = aux_get_tk_data(clock_id); + if (!tkd) + return false; + offs = &tkd->timekeeper.offs_aux; + break; default: WARN_ON_ONCE(1); return false; @@ -1228,6 +1239,10 @@ bool ktime_get_snapshot_id(struct system do { seq = read_seqcount_begin(&tkd->seq); + /* Aux clocks can be invalid */ + if (!tk->clock_valid) + return false; + now = tk_clock_read(&tk->tkr_mono); systime_snapshot->cs_id = tk->tkr_mono.clock->id; systime_snapshot->cs_was_changed_seq = tk->cs_was_changed_seq;
