linux-kernel - [PATCH] kallsyms: Always include

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Message-ID: <2fec8c50c271dff59f0177ff0884b6c374486ba5.1736327770.git.christophe.leroy@csgroup.eu>
Date: Wed,  8 Jan 2025 10:17:54 +0100
From: Christophe Leroy <christophe.leroy@...roup.eu>
To: Namhyung Kim <namhyung@...nel.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Adrian Hunter <adrian.hunter@...el.com>
Cc: Christophe Leroy <christophe.leroy@...roup.eu>,
	linux-kernel@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org,
	linux-perf-users@...r.kernel.org
Subject: [PATCH] kallsyms: Always include _edata

Since commit 69a87a32f5cd ("perf machine: Include data symbols in the
kernel map"), perf needs _edata symbol.

Make sure it is always included in /proc/kallsyms and not only when
CONFIG_KALLSYMS_ALL is selected.

Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
Fixes: 69a87a32f5cd ("perf machine: Include data symbols in the kernel map")
---
 scripts/kallsyms.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index 03852da3d249..391ab7ebce7f 100644
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -215,6 +215,8 @@ static int symbol_valid(const struct sym_entry *s)
 		if (string_starts_with(name, "__start_") ||
 		    string_starts_with(name, "__stop_"))
 			return 1;
+		if (!strcmp(name, "_edata"))
+			return 1;
 
 		if (symbol_in_range(s, text_ranges,
 				    ARRAY_SIZE(text_ranges)) == 0)
-- 
2.47.0