linux-kernel - [PATCH 44/46] scripts/bloat-o-meter, lto: handle gcc LTO

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Message-Id: <20221114114344.18650-45-jirislaby@kernel.org>
Date:   Mon, 14 Nov 2022 12:43:42 +0100
From:   "Jiri Slaby (SUSE)" <jirislaby@...nel.org>
To:     linux-kernel@...r.kernel.org
Cc:     Andi Kleen <ak@...ux.intel.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        linux-kbuild@...r.kernel.org, Martin Liska <mliska@...e.cz>,
        Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 44/46] scripts/bloat-o-meter, lto: handle gcc LTO

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

gcc LTO can add .lto_priv postfixes to symbols. Ignore those in
bloat-o-meter to allow comparison of non-LTO with LTO kernels.

Cc: Masahiro Yamada <masahiroy@...nel.org>
Cc: Michal Marek <michal.lkml@...kovi.net>
Cc: Nick Desaulniers <ndesaulniers@...gle.com>
Cc: linux-kbuild@...r.kernel.org
Signed-off-by: Andi Kleen <ak@...ux.intel.com>
Signed-off-by: Martin Liska <mliska@...e.cz>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 scripts/bloat-o-meter | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/bloat-o-meter b/scripts/bloat-o-meter
index f9553f60a14a..ab994b3bf6e2 100755
--- a/scripts/bloat-o-meter
+++ b/scripts/bloat-o-meter
@@ -45,7 +45,7 @@ def getsizes(file, format):
                 if name == "linux_banner": continue
                 if name == "vermagic": continue
                 # statics and some other optimizations adds random .NUMBER
-                name = re_NUMBER.sub('', name)
+                name = re_NUMBER.sub('', name).replace(".lto_priv", "")
                 sym[name] = sym.get(name, 0) + int(size, 16)
     return sym
 
-- 
2.38.1