@@ -507,6 +507,7 @@ struct ring_buffer_iter {
struct buffer_page *cache_reader_page;
unsigned long cache_read;
u64 read_stamp;
+ u64 page_stamp;
};
/**
@@ -1959,7 +1960,7 @@ static void rb_inc_iter(struct ring_buffer_iter *iter)
else
rb_inc_page(cpu_buffer, &iter->head_page);
- iter->read_stamp = iter->head_page->page->time_stamp;
+ iter->page_stamp = iter->read_stamp = iter->head_page->page->time_stamp;
iter->head = 0;
}
@@ -3551,10 +3552,13 @@ static void rb_iter_reset(struct ring_buffer_iter *iter)
iter->cache_reader_page = iter->head_page;
iter->cache_read = cpu_buffer->read;
- if (iter->head)
+ if (iter->head) {
iter->read_stamp = cpu_buffer->read_stamp;
- else
+ iter->page_stamp = cpu_buffer->reader_page->page->time_stamp;
+ } else {
iter->read_stamp = iter->head_page->page->time_stamp;
+ iter->page_stamp = iter->read_stamp;
+ }
}
/**