linux-kernel - [PATCH] scripts/bloat-o-meter: filter out vermagic as it is not relevant

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Message-Id: <20220428035824.7934-1-paul.gortmaker@windriver.com>
Date:   Wed, 27 Apr 2022 23:58:24 -0400
From:   Paul Gortmaker <paul.gortmaker@...driver.com>
To:     linux-kernel@...r.kernel.org
Cc:     Paul Gortmaker <paul.gortmaker@...driver.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] scripts/bloat-o-meter: filter out vermagic as it is not relevant

Seeing it as a false positive increase at the top is just noise:

   linux-head$./scripts/bloat-o-meter ../pre/vmlinux ../post/vmlinux
   add/remove: 0/571 grow/shrink: 1/9 up/down: 20/-64662 (-64642)
   Function                                     old     new   delta
   vermagic                                      49      69     +20

Since it really doesn't "grow", it makes sense to filter it out.

Cc: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>

diff --git a/scripts/bloat-o-meter b/scripts/bloat-o-meter
index dcd8d8750b8b..4dd6a804ce41 100755
--- a/scripts/bloat-o-meter
+++ b/scripts/bloat-o-meter
@@ -36,6 +36,7 @@ def getsizes(file, format):
                 if name.startswith("__se_compat_sys"): continue
                 if name.startswith("__addressable_"): continue
                 if name == "linux_banner": continue
+                if name == "vermagic": continue
                 # statics and some other optimizations adds random .NUMBER
                 name = re_NUMBER.sub('', name)
                 sym[name] = sym.get(name, 0) + int(size, 16)
-- 
2.17.1