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[149.14.88.26]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-af63585fff3sm750425466b.21.2025.07.30.06.55.23 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 30 Jul 2025 06:55:23 -0700 (PDT) Message-ID: <7ecaae9e-a088-4c1b-9caf-6a006a756544@redhat.com> Date: Wed, 30 Jul 2025 15:55:22 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC][PATCH v2 16/29] mm/show_mem: Annotate static information into Kmemdump To: Eugen Hristev , linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, tglx@linutronix.de, andersson@kernel.org, pmladek@suse.com Cc: linux-arm-kernel@lists.infradead.org, linux-hardening@vger.kernel.org, corbet@lwn.net, mojha@qti.qualcomm.com, rostedt@goodmis.org, jonechou@google.com, tudor.ambarus@linaro.org References: <20250724135512.518487-1-eugen.hristev@linaro.org> <20250724135512.518487-17-eugen.hristev@linaro.org> From: David Hildenbrand Autocrypt: addr=david@redhat.com; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzSREYXZpZCBIaWxk ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwZgEEwEIAEICGwMGCwkIBwMCBhUIAgkKCwQW AgMBAh4BAheAAhkBFiEEG9nKrXNcTDpGDfzKTd4Q9wD/g1oFAmgsLPQFCRvGjuMACgkQTd4Q 9wD/g1o0bxAAqYC7gTyGj5rZwvy1VesF6YoQncH0yI79lvXUYOX+Nngko4v4dTlOQvrd/vhb 02e9FtpA1CxgwdgIPFKIuXvdSyXAp0xXuIuRPQYbgNriQFkaBlHe9mSf8O09J3SCVa/5ezKM OLW/OONSV/Fr2VI1wxAYj3/Rb+U6rpzqIQ3Uh/5Rjmla6pTl7Z9/o1zKlVOX1SxVGSrlXhqt kwdbjdj/csSzoAbUF/duDuhyEl11/xStm/lBMzVuf3ZhV5SSgLAflLBo4l6mR5RolpPv5wad GpYS/hm7HsmEA0PBAPNb5DvZQ7vNaX23FlgylSXyv72UVsObHsu6pT4sfoxvJ5nJxvzGi69U s1uryvlAfS6E+D5ULrV35taTwSpcBAh0/RqRbV0mTc57vvAoXofBDcs3Z30IReFS34QSpjvl Hxbe7itHGuuhEVM1qmq2U72ezOQ7MzADbwCtn+yGeISQqeFn9QMAZVAkXsc9Wp0SW/WQKb76 FkSRalBZcc2vXM0VqhFVzTb6iNqYXqVKyuPKwhBunhTt6XnIfhpRgqveCPNIasSX05VQR6/a OBHZX3seTikp7A1z9iZIsdtJxB88dGkpeMj6qJ5RLzUsPUVPodEcz1B5aTEbYK6428H8MeLq NFPwmknOlDzQNC6RND8Ez7YEhzqvw7263MojcmmPcLelYbfOwU0EVcufkQEQAOfX3n0g0fZz Bgm/S2zF/kxQKCEKP8ID+Vz8sy2GpDvveBq4H2Y34XWsT1zLJdvqPI4af4ZSMxuerWjXbVWb T6d4odQIG0fKx4F8NccDqbgHeZRNajXeeJ3R7gAzvWvQNLz4piHrO/B4tf8svmRBL0ZB5P5A 2uhdwLU3NZuK22zpNn4is87BPWF8HhY0L5fafgDMOqnf4guJVJPYNPhUFzXUbPqOKOkL8ojk CXxkOFHAbjstSK5Ca3fKquY3rdX3DNo+EL7FvAiw1mUtS+5GeYE+RMnDCsVFm/C7kY8c2d0G NWkB9pJM5+mnIoFNxy7YBcldYATVeOHoY4LyaUWNnAvFYWp08dHWfZo9WCiJMuTfgtH9tc75 7QanMVdPt6fDK8UUXIBLQ2TWr/sQKE9xtFuEmoQGlE1l6bGaDnnMLcYu+Asp3kDT0w4zYGsx 5r6XQVRH4+5N6eHZiaeYtFOujp5n+pjBaQK7wUUjDilPQ5QMzIuCL4YjVoylWiBNknvQWBXS lQCWmavOT9sttGQXdPCC5ynI+1ymZC1ORZKANLnRAb0NH/UCzcsstw2TAkFnMEbo9Zu9w7Kv AxBQXWeXhJI9XQssfrf4Gusdqx8nPEpfOqCtbbwJMATbHyqLt7/oz/5deGuwxgb65pWIzufa N7eop7uh+6bezi+rugUI+w6DABEBAAHCwXwEGAEIACYCGwwWIQQb2cqtc1xMOkYN/MpN3hD3 AP+DWgUCaCwtJQUJG8aPFAAKCRBN3hD3AP+DWlDnD/4k2TW+HyOOOePVm23F5HOhNNd7nNv3 Vq2cLcW1DteHUdxMO0X+zqrKDHI5hgnE/E2QH9jyV8mB8l/ndElobciaJcbl1cM43vVzPIWn 01vW62oxUNtEvzLLxGLPTrnMxWdZgxr7ACCWKUnMGE2E8eca0cT2pnIJoQRz242xqe/nYxBB /BAK+dsxHIfcQzl88G83oaO7vb7s/cWMYRKOg+WIgp0MJ8DO2IU5JmUtyJB+V3YzzM4cMic3 bNn8nHjTWw/9+QQ5vg3TXHZ5XMu9mtfw2La3bHJ6AybL0DvEkdGxk6YHqJVEukciLMWDWqQQ RtbBhqcprgUxipNvdn9KwNpGciM+hNtM9kf9gt0fjv79l/FiSw6KbCPX9b636GzgNy0Ev2UV m00EtcpRXXMlEpbP4V947ufWVK2Mz7RFUfU4+ETDd1scMQDHzrXItryHLZWhopPI4Z+ps0rB CQHfSpl+wG4XbJJu1D8/Ww3FsO42TMFrNr2/cmqwuUZ0a0uxrpkNYrsGjkEu7a+9MheyTzcm vyU2knz5/stkTN2LKz5REqOe24oRnypjpAfaoxRYXs+F8wml519InWlwCra49IUSxD1hXPxO WBe5lqcozu9LpNDH/brVSzHCSb7vjNGvvSVESDuoiHK8gNlf0v+epy5WYd7CGAgODPvDShGN g3eXuA== Organization: Red Hat In-Reply-To: <20250724135512.518487-17-eugen.hristev@linaro.org> X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: 4zIOy91Th8NrkrxuFmUFpEF0qrOeVFrF_DfcEZHbe-8_1753883725 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Stat-Signature: wheu84o8yro3856jf4b4racbkxkiutfh X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 59F3BC0005 X-Rspam-User: X-HE-Tag: 1753883728-891465 X-HE-Meta: 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 IfK0N63B 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 24.07.25 15:54, Eugen Hristev wrote: > Annotate vital static information into kmemdump: > - _totalram_pages > > Information on these variables is stored into dedicated kmemdump section. > > Signed-off-by: Eugen Hristev > --- > mm/show_mem.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/mm/show_mem.c b/mm/show_mem.c > index 41999e94a56d..93a5dc041ae1 100644 > --- a/mm/show_mem.c > +++ b/mm/show_mem.c > @@ -14,12 +14,14 @@ > #include > #include > #include > +#include > > #include "internal.h" > #include "swap.h" > > atomic_long_t _totalram_pages __read_mostly; > EXPORT_SYMBOL(_totalram_pages); > +KMEMDUMP_VAR_CORE(_totalram_pages, sizeof(_totalram_pages)); Tagging these variables that way is really rather ... controversial. As these are exported globals, isn't there a way to have a list of what to include and what not somewhere else? Not sure if any of that would win a beauty price, though. -- Cheers, David / dhildenb