mm: vmscan: correct nr_requested tracing in scan_folios
When enabling vmscan tracing, it is observed that nr_requested is always
4096, which is confusing.
mm_vmscan_lru_isolate: classzone=3 order=0 nr_requested=4096 ...
mm_vmscan_lru_isolate: classzone=3 order=0 nr_requested=4096 ...
mm_vmscan_lru_isolate: classzone=3 order=0 nr_requested=4096 ...
mm_vmscan_lru_isolate: classzone=3 order=0 nr_requested=4096 ...
mm_vmscan_lru_isolate: classzone=3 order=0 nr_requested=4096 ...
mm_vmscan_lru_isolate: classzone=3 order=0 nr_requested=4096 ...
mm_vmscan_lru_isolate: classzone=3 order=0 nr_requested=4096 ...
This is because it prints MAX_LRU_BATCH, which is meaningless as it's a
constant. To fix this, modify it to print capped valued.
Link: https://lkml.kernel.org/r/20251204122355.1822919-1-chenridong@huaweicloud.com
Fixes: 8c2214fc9a47 ("mm: multi-gen LRU: reuse some legacy trace events")
Signed-off-by: Chen Ridong <chenridong@huawei.com>
Acked-by: David Hildenbrand (Red Hat) <david@kernel.org>
Reviewed-by: Lance Yang <lance.yang@linux.dev>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Jaewon Kim <jaewon31.kim@samsung.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Lu Jialin <lujialin4@huawei.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Wei Xu <weixugc@google.com>
Cc: Yuanchu Xie <yuanchu@google.com>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
1 file changed
