UFS_EVENT_HIST_LENGTH
e->pos = (e->pos + 1) % UFS_EVENT_HIST_LENGTH;
for (i = 0; i < UFS_EVENT_HIST_LENGTH; i++) {
int p = (i + e->pos) % UFS_EVENT_HIST_LENGTH;
u32 val[UFS_EVENT_HIST_LENGTH];
u64 tstamp[UFS_EVENT_HIST_LENGTH];