From 54e6fc38e888a54b016e1e04e1eceea78ddf7ace Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Thu, 8 May 2014 13:39:35 +0200 Subject: 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 Signed-off-by: Lars Ellenberg --- lib/lru_cache.c | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) (limited to 'lib') 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) * lc_dump - Dump a complete LRU cache to seq in textual form. * @lc: the lru cache to operate on * @seq: the &struct seq_file pointer to seq_printf into - * @utext: user supplied "heading" or other info + * @utext: user supplied additional "heading" or other info * @detail: function pointer the user may provide to dump further details - * of the object the lc_element is embedded in. + * of the object the lc_element is embedded in. May be NULL. + * Note: a leading space ' ' and trailing newline '\n' is implied. */ void lc_seq_dump_details(struct seq_file *seq, struct lru_cache *lc, char *utext, 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 struct lc_element *e; int i; - seq_printf(seq, "\tnn: lc_number refcnt %s\n ", utext); + seq_printf(seq, "\tnn: lc_number (new nr) refcnt %s\n ", utext); for (i = 0; i < nr_elements; i++) { e = lc_element_by_index(lc, i); - if (e->lc_number == LC_FREE) { - seq_printf(seq, "\t%2d: FREE\n", i); - } else { - seq_printf(seq, "\t%2d: %4u %4u ", i, - e->lc_number, e->refcnt); + if (e->lc_number != e->lc_new_number) + seq_printf(seq, "\t%5d: %6d %8d %6d ", + i, e->lc_number, e->lc_new_number, e->refcnt); + else + seq_printf(seq, "\t%5d: %6d %-8s %6d ", + i, e->lc_number, "-\"-", e->refcnt); + if (detail) detail(seq, e); - } + seq_putc(seq, '\n'); } } -- cgit v1.2.3