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authorLars Ellenberg <lars.ellenberg@linbit.com>2014-05-08 07:39:35 -0400
committerPhilipp Reisner <philipp.reisner@linbit.com>2014-07-10 12:35:19 -0400
commit54e6fc38e888a54b016e1e04e1eceea78ddf7ace (patch)
treeb4908bb91f765a1f117df38379ff37cbcf8b451c /lib
parent944410e97cfcec38369eeb5f77d0e8da91d68afb (diff)
drbd: debugfs: add per volume oldest_requests
Show oldest requests * pending master bio completion and, * if different, local disk bio completion. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'lib')
-rw-r--r--lib/lru_cache.c21
1 files changed, 12 insertions, 9 deletions
diff --git a/lib/lru_cache.c b/lib/lru_cache.c
index 6111cd19762d..852c81e3ba9a 100644
--- a/lib/lru_cache.c
+++ b/lib/lru_cache.c
@@ -643,9 +643,10 @@ void lc_set(struct lru_cache *lc, unsigned int enr, int index)
643 * lc_dump - Dump a complete LRU cache to seq in textual form. 643 * lc_dump - Dump a complete LRU cache to seq in textual form.
644 * @lc: the lru cache to operate on 644 * @lc: the lru cache to operate on
645 * @seq: the &struct seq_file pointer to seq_printf into 645 * @seq: the &struct seq_file pointer to seq_printf into
646 * @utext: user supplied "heading" or other info 646 * @utext: user supplied additional "heading" or other info
647 * @detail: function pointer the user may provide to dump further details 647 * @detail: function pointer the user may provide to dump further details
648 * of the object the lc_element is embedded in. 648 * of the object the lc_element is embedded in. May be NULL.
649 * Note: a leading space ' ' and trailing newline '\n' is implied.
649 */ 650 */
650void lc_seq_dump_details(struct seq_file *seq, struct lru_cache *lc, char *utext, 651void lc_seq_dump_details(struct seq_file *seq, struct lru_cache *lc, char *utext,
651 void (*detail) (struct seq_file *, struct lc_element *)) 652 void (*detail) (struct seq_file *, struct lc_element *))
@@ -654,16 +655,18 @@ void lc_seq_dump_details(struct seq_file *seq, struct lru_cache *lc, char *utext
654 struct lc_element *e; 655 struct lc_element *e;
655 int i; 656 int i;
656 657
657 seq_printf(seq, "\tnn: lc_number refcnt %s\n ", utext); 658 seq_printf(seq, "\tnn: lc_number (new nr) refcnt %s\n ", utext);
658 for (i = 0; i < nr_elements; i++) { 659 for (i = 0; i < nr_elements; i++) {
659 e = lc_element_by_index(lc, i); 660 e = lc_element_by_index(lc, i);
660 if (e->lc_number == LC_FREE) { 661 if (e->lc_number != e->lc_new_number)
661 seq_printf(seq, "\t%2d: FREE\n", i); 662 seq_printf(seq, "\t%5d: %6d %8d %6d ",
662 } else { 663 i, e->lc_number, e->lc_new_number, e->refcnt);
663 seq_printf(seq, "\t%2d: %4u %4u ", i, 664 else
664 e->lc_number, e->refcnt); 665 seq_printf(seq, "\t%5d: %6d %-8s %6d ",
666 i, e->lc_number, "-\"-", e->refcnt);
667 if (detail)
665 detail(seq, e); 668 detail(seq, e);
666 } 669 seq_putc(seq, '\n');
667 } 670 }
668} 671}
669 672