add_timestamp
p = add_timestamp(p);
bool abs = info->add_timestamp &
if (unlikely(info->add_timestamp))
int add_timestamp;
} else if (info->add_timestamp &
if ((info->add_timestamp & RB_ADD_STAMP_ABSOLUTE)) {
info->add_timestamp |= RB_ADD_STAMP_FORCE | RB_ADD_STAMP_EXTEND;
info->add_timestamp |= RB_ADD_STAMP_EXTEND;
if (likely(!(info->add_timestamp &
info->add_timestamp &= ~RB_ADD_STAMP_FORCE;
if (unlikely(!tail && !(info->add_timestamp &
info.add_timestamp = add_ts_default;
if (info.add_timestamp & (RB_ADD_STAMP_FORCE | RB_ADD_STAMP_EXTEND))