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charset=UTF-8 Content-Transfer-Encoding: 8bit Reviewed-by: Alex Shi On 10/19/24 16:54, Dongliang Mu wrote: > Update to commit f5c12105c15f ("mm,page_owner: fix refcount imbalance") > > Documentation/translations/zh_CN/mm/page_owner.rst > commit f5c12105c15f ("mm,page_owner: fix refcount imbalance") > commit ba6fe5377244 ("mm,page_owner: update Documentation regarding > page_owner_stacks") > 2 commits needs resolving in total > > Signed-off-by: Dongliang Mu > --- > .../translations/zh_CN/mm/page_owner.rst | 46 +++++++++++++++++++ > 1 file changed, 46 insertions(+) > > diff --git a/Documentation/translations/zh_CN/mm/page_owner.rst b/Documentation/translations/zh_CN/mm/page_owner.rst > index b72a972271d9..c0d1ca4b9695 100644 > --- a/Documentation/translations/zh_CN/mm/page_owner.rst > +++ b/Documentation/translations/zh_CN/mm/page_owner.rst > @@ -26,6 +26,9 @@ page owner是用来追踪谁分配的每一个页面。它可以用来调试内 > 页面所有者也可以用于各种目的。例如，可以通过每个页面的gfp标志信息获得精确的碎片 > 统计。如果启用了page owner，它就已经实现并激活了。我们非常欢迎其他用途。 > > +它也可以用来显示所有的栈以及它们当前分配的基础页面数，这让我们能够快速了解内存的 > +使用情况，而无需浏览所有页面并匹配分配和释放操作。 > + > page owner在默认情况下是禁用的。所以，如果你想使用它，你需要在你的启动cmdline > 中加入"page_owner=on"。如果内核是用page owner构建的，并且由于没有启用启动 > 选项而在运行时禁用page owner，那么运行时的开销是很小的。如果在运行时禁用，它不 > @@ -60,6 +63,49 @@ page owner在默认情况下是禁用的。所以，如果你想使用它，你 > > 4) 分析来自页面所有者的信息:: > > + cat /sys/kernel/debug/page_owner_stacks/show_stacks > stacks.txt > + cat stacks.txt > + post_alloc_hook+0x177/0x1a0 > + get_page_from_freelist+0xd01/0xd80 > + __alloc_pages+0x39e/0x7e0 > + allocate_slab+0xbc/0x3f0 > + ___slab_alloc+0x528/0x8a0 > + kmem_cache_alloc+0x224/0x3b0 > + sk_prot_alloc+0x58/0x1a0 > + sk_alloc+0x32/0x4f0 > + inet_create+0x427/0xb50 > + __sock_create+0x2e4/0x650 > + inet_ctl_sock_create+0x30/0x180 > + igmp_net_init+0xc1/0x130 > + ops_init+0x167/0x410 > + setup_net+0x304/0xa60 > + copy_net_ns+0x29b/0x4a0 > + create_new_namespaces+0x4a1/0x820 > + nr_base_pages: 16 > + ... > + ... > + echo 7000 > /sys/kernel/debug/page_owner_stacks/count_threshold > + cat /sys/kernel/debug/page_owner_stacks/show_stacks> stacks_7000.txt > + cat stacks_7000.txt > + post_alloc_hook+0x177/0x1a0 > + get_page_from_freelist+0xd01/0xd80 > + __alloc_pages+0x39e/0x7e0 > + alloc_pages_mpol+0x22e/0x490 > + folio_alloc+0xd5/0x110 > + filemap_alloc_folio+0x78/0x230 > + page_cache_ra_order+0x287/0x6f0 > + filemap_get_pages+0x517/0x1160 > + filemap_read+0x304/0x9f0 > + xfs_file_buffered_read+0xe6/0x1d0 [xfs] > + xfs_file_read_iter+0x1f0/0x380 [xfs] > + __kernel_read+0x3b9/0x730 > + kernel_read_file+0x309/0x4d0 > + __do_sys_finit_module+0x381/0x730 > + do_syscall_64+0x8d/0x150 > + entry_SYSCALL_64_after_hwframe+0x62/0x6a > + nr_base_pages: 20824 > + ... > + > cat /sys/kernel/debug/page_owner > page_owner_full.txt > ./page_owner_sort page_owner_full.txt sorted_page_owner.txt >