linux-kernel - Re: [PATCH 6/6] docs/zh_CN: update the translation of mm/page

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Message-ID: <289e0ccf-2671-46b4-aec9-0123e9a8eacb@gmail.com>
Date: Tue, 22 Oct 2024 09:44:53 +0800
From: Alex Shi <seakeel@...il.com>
To: Dongliang Mu <dzm91@...t.edu.cn>, si.yanteng@...ux.dev, alexs@...nel.org,
 corbet@....net, Yanteng Si <siyanteng@...ngson.cn>
Cc: hust-os-kernel-patches@...glegroups.com, linux-doc@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/6] docs/zh_CN: update the translation of
 mm/page_owner.rst

Reviewed-by: Alex Shi <alexs@...nel.org>

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 <dzm91@...t.edu.cn>
> ---
>  .../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
>