diff options
Diffstat (limited to 'include/bootstage.h')
-rw-r--r-- | include/bootstage.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/bootstage.h b/include/bootstage.h index 64b2ec6e4a3..127c94f1b25 100644 --- a/include/bootstage.h +++ b/include/bootstage.h @@ -247,6 +247,33 @@ ulong bootstage_error(enum bootstage_id id); ulong bootstage_mark_name(enum bootstage_id id, const char *name); +/** + * Mark the start of a bootstage activity. The end will be marked later with + * bootstage_accum() and at that point we accumulate the time taken. Calling + * this function turns the given id into a accumulator rather than and + * absolute mark in time. Accumulators record the total amount of time spent + * in an activty during boot. + * + * @param id Bootstage id to record this timestamp against + * @param name Textual name to display for this id in the report (maybe NULL) + * @return start timestamp in microseconds + */ +uint32_t bootstage_start(enum bootstage_id id, const char *name); + +/** + * Mark the end of a bootstage activity + * + * After previously marking the start of an activity with bootstage_start(), + * call this function to mark the end. You can call these functions in pairs + * as many times as you like. + * + * @param id Bootstage id to record this timestamp against + * @return time spent in this iteration of the activity (i.e. the time now + * less the start time recorded in the last bootstage_start() call + * with this id. + */ +uint32_t bootstage_accum(enum bootstage_id id); + /* Print a report about boot time */ void bootstage_report(void); |