[V2,1/2] mm/slab: Add slabreclaim flag to slabinfo

Commit Message

Fangzheng Zhang Feb. 19, 2024, 3:19 a.m. UTC

In order to enhance slab debugging, we add slabreclaim flag to
slabinfo. Slab type is also an important analysis point in slabinfo
for per slab, when various problems such as memory leaks or memory
statistics occur.

Signed-off-by: Fangzheng Zhang <[e-mail]>
---
 mm/slab_common.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

Patch

diff --git a/mm/slab_common.c b/mm/slab_common.c
index 238293b1dbe1..fd865ca335ea 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -1035,10 +1035,10 @@  static void print_slabinfo_header(struct seq_file *m)
 	 * Output format version, so at least we can change it
 	 * without _too_ many complaints.
 	 */
-	seq_puts(m, "slabinfo - version: 2.1\n");
+	seq_puts(m, "slabinfo - version: 2.2\n");
 	seq_puts(m, "# name            <active_objs> <num_objs> <objsize> <objperslab> <pagesperslab>");
 	seq_puts(m, " : tunables <limit> <batchcount> <sharedfactor>");
-	seq_puts(m, " : slabdata <active_slabs> <num_slabs> <sharedavail>");
+	seq_puts(m, " : slabdata <active_slabs> <num_slabs> <sharedavail> <slabreclaim>");
 	seq_putc(m, '\n');
 }
 
@@ -1071,8 +1071,9 @@  static void cache_show(struct kmem_cache *s, struct seq_file *m)
 
 	seq_printf(m, " : tunables %4u %4u %4u",
 		   sinfo.limit, sinfo.batchcount, sinfo.shared);
-	seq_printf(m, " : slabdata %6lu %6lu %6lu",
-		   sinfo.active_slabs, sinfo.num_slabs, sinfo.shared_avail);
+	seq_printf(m, " : slabdata %6lu %6lu %6lu %6u",
+		   sinfo.active_slabs, sinfo.num_slabs, sinfo.shared_avail,
+		   !!(s->flags & SLAB_RECLAIM_ACCOUNT));
 	slabinfo_show_stats(m, s);
 	seq_putc(m, '\n');
 }