lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:	Fri, 14 Feb 2014 22:17:06 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	linux-kernel@...r.kernel.org
Cc:	x86@...nel.org, linux-kbuild@...r.kernel.org, mmarek@...e.cz,
	Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH 3/6] kbuild: Don't include const variable in kallsyms with !KALLSYMS_ALL

From: Andi Kleen <ak@...ux.intel.com>

const variables are put into the text segment, so !KALLSYMS_ALL
includes them into the kallsyms section. Remove them to make
the kallsyms smaller. This also avoids some problems with LTO.
The way LTO generates the first pass kallsyms cannot handle
variables currently, so if we don't filter them out the
first and second level pass differ too much.

Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
 scripts/kallsyms.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index ceef756..d79027e 100644
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -151,6 +151,11 @@ static int read_symbol(FILE *in, struct sym_entry *s)
 	/* exclude debugging symbols */
 	else if (stype == 'N')
 		return -1;
+	/* Don't include const symbols in the text section
+	 * unless --all-symbols is specified.
+	 */
+	else if (toupper(stype) != 'T' && !all_symbols)
+		return -1;
 
 	/* include the type field in the symbol name, so that it gets
 	 * compressed together */
-- 
1.8.5.2

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists