From: Yafang Shao <laoar.shao@gmail.com>
To: cl@linux.com, penberg@kernel.org, rientjes@google.com,
iamjoonsoo.kim@lge.com, akpm@linux-foundation.org,
willy@infradead.org, hannes@cmpxchg.org, mhocko@suse.com,
david@redhat.com, osalvador@suse.de, linmiaohe@huawei.com,
steven.price@arm.com, guro@fb.com,
alexander.h.duyck@linux.intel.com, ying.huang@intel.com
Cc: linux-mm@kvack.org, Yafang Shao <laoar.shao@gmail.com>
Subject: [PATCH 1/2] mm, slub: use pGp to print page flags
Date: Fri, 15 Jan 2021 14:13:48 +0800 [thread overview]
Message-ID: <20210115061349.67386-2-laoar.shao@gmail.com> (raw)
In-Reply-To: <20210115061349.67386-1-laoar.shao@gmail.com>
As pGp has been already introduced in printk, we'd better use it to make
the output human readable.
Before this change, the output is,
[ 6155.716018] INFO: Slab 0x000000004027dd4f objects=33 used=3 fp=0x000000008cd1579c flags=0x17ffffc0010200
While after this change, the output is,
[ 8846.517809] INFO: Slab 0x00000000f42a2c60 objects=33 used=3 fp=0x0000000060d32ca8 flags=0x17ffffc0010200(slab|head)
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
---
mm/slub.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/mm/slub.c b/mm/slub.c
index dc5b42e..901a45a 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -641,8 +641,9 @@ void print_tracking(struct kmem_cache *s, void *object)
static void print_page_info(struct page *page)
{
- pr_err("INFO: Slab 0x%p objects=%u used=%u fp=0x%p flags=0x%04lx\n",
- page, page->objects, page->inuse, page->freelist, page->flags);
+ pr_err("INFO: Slab 0x%p objects=%u used=%u fp=0x%p flags=%#lx(%pGp)\n",
+ page, page->objects, page->inuse, page->freelist,
+ page->flags, &page->flags);
}
--
1.8.3.1
next prev parent reply other threads:[~2021-01-15 6:14 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-15 6:13 [PATCH 0/2] mm: improve the output of print_page_info() Yafang Shao
2021-01-15 6:13 ` Yafang Shao [this message]
2021-01-15 8:46 ` [PATCH 1/2] mm, slub: use pGp to print page flags David Hildenbrand
2021-01-15 10:14 ` Yafang Shao
2021-01-15 6:13 ` [PATCH 2/2] mm: introduce PAGE_FLAGS() to make output of page flags better Yafang Shao
2021-01-15 8:39 ` David Hildenbrand
2021-01-15 10:10 ` Yafang Shao
2021-01-15 10:15 ` David Hildenbrand
2021-01-15 10:17 ` Yafang Shao
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