linux-hardening - [RFC][PATCH v2 16/29] mm/show_mem: Annotate static information into Kmemdump

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Message-ID: <20250724135512.518487-17-eugen.hristev@linaro.org>
Date: Thu, 24 Jul 2025 16:54:59 +0300
From: Eugen Hristev <eugen.hristev@...aro.org>
To: linux-kernel@...r.kernel.org,
	linux-arm-msm@...r.kernel.org,
	linux-arch@...r.kernel.org,
	linux-mm@...ck.org,
	tglx@...utronix.de,
	andersson@...nel.org,
	pmladek@...e.com
Cc: linux-arm-kernel@...ts.infradead.org,
	linux-hardening@...r.kernel.org,
	eugen.hristev@...aro.org,
	corbet@....net,
	mojha@....qualcomm.com,
	rostedt@...dmis.org,
	jonechou@...gle.com,
	tudor.ambarus@...aro.org
Subject: [RFC][PATCH v2 16/29] mm/show_mem: Annotate static information into Kmemdump

Annotate vital static information into kmemdump:
 - _totalram_pages

Information on these variables is stored into dedicated kmemdump section.

Signed-off-by: Eugen Hristev <eugen.hristev@...aro.org>
---
 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 <linux/mmzone.h>
 #include <linux/swap.h>
 #include <linux/vmstat.h>
+#include <linux/kmemdump.h>
 
 #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));
 unsigned long totalreserve_pages __read_mostly;
 unsigned long totalcma_pages __read_mostly;
 
-- 
2.43.0