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[82.11.253.99]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4587054e37dsm20889375e9.14.2025.07.24.06.56.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Jul 2025 06:56:41 -0700 (PDT) From: Eugen Hristev To: 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, eugen.hristev@linaro.org, corbet@lwn.net, mojha@qti.qualcomm.com, rostedt@goodmis.org, jonechou@google.com, tudor.ambarus@linaro.org Subject: [RFC][PATCH v2 22/29] mm/numa: Register information into Kmemdump Date: Thu, 24 Jul 2025 16:55:05 +0300 Message-ID: <20250724135512.518487-23-eugen.hristev@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250724135512.518487-1-eugen.hristev@linaro.org> References: <20250724135512.518487-1-eugen.hristev@linaro.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Annotate vital static information into kmemdump: - node_data Information on these variables is stored into dedicated kmemdump section. Register dynamic information into kmemdump: - dynamic node data for each node This information is being allocated for each node, as physical address, so call kmemdump_phys_alloc_size that will allocate an unique kmemdump uid, and register the virtual address. Signed-off-by: Eugen Hristev --- mm/numa.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/mm/numa.c b/mm/numa.c index 7d5e06fe5bd4..88cada571171 100644 --- a/mm/numa.c +++ b/mm/numa.c @@ -4,9 +4,11 @@ #include #include #include +#include =20 struct pglist_data *node_data[MAX_NUMNODES]; EXPORT_SYMBOL(node_data); +KMEMDUMP_VAR_CORE(node_data, MAX_NUMNODES * sizeof(struct pglist_data)); =20 /* Allocate NODE_DATA for a node on the local memory */ void __init alloc_node_data(int nid) @@ -16,7 +18,8 @@ void __init alloc_node_data(int nid) int tnid; =20 /* Allocate node data. Try node-local memory and then any node. */ - nd_pa =3D memblock_phys_alloc_try_nid(nd_size, SMP_CACHE_BYTES, nid); + nd_pa =3D kmemdump_phys_alloc_size(nd_size, memblock_phys_alloc_try_nid, + nd_size, SMP_CACHE_BYTES, nid); if (!nd_pa) panic("Cannot allocate %zu bytes for node %d data\n", nd_size, nid); --=20 2.43.0