linux-kernel - [PATCH 2/2] modpost: simplify file name generation of *.mod.c files

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Date:	Mon, 25 Aug 2014 12:25:16 +0200
From:	Mathias Krause <minipli@...glemail.com>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	linux-kernel@...r.kernel.org,
	Mathias Krause <minipli@...glemail.com>
Subject: [PATCH 2/2] modpost: simplify file name generation of *.mod.c files

Avoid the variable length array (vla), just use PATH_MAX instead.
This not only makes this code clang friedly, it also leads to a
code size reduction:

   text    data     bss     dec     hex filename
  51765    2224   12416   66405   10365 scripts/mod/modpost.old
  51677    2224   12416   66317   1030d scripts/mod/modpost.new

Signed-off-by: Mathias Krause <minipli@...glemail.com>
---
 scripts/mod/modpost.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index c2ebdc788f..3b405c726e 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -2212,7 +2212,7 @@ int main(int argc, char **argv)
 	err = 0;
 
 	for (mod = modules; mod; mod = mod->next) {
-		char fname[strlen(mod->name) + 10];
+		char fname[PATH_MAX];
 
 		if (mod->skip)
 			continue;
-- 
1.7.10.4

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