From: Randy Dunlap Date: Sun, 25 Jun 2006 12:48:29 +0000 (-0700) Subject: [PATCH] checkstack: print module names X-Git-Tag: v2.6.18-rc1~944 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8ad2914d9cc55be651ef3bd676981a72c9001a47;p=linux-2.6 [PATCH] checkstack: print module names Finding "init_module" high stack usage problems is challenging when there are over 1600 "init_module" functions in the kernel tree, so make checkstack.pl print out the filename where the stack usage occurs. This is useful for code built as loadable modules. For built-in code, it just prints the kernel image file name, like "vmlinux". Examples: (before patch:) 0x0000000d callback: 1928 0xffffffff81678c09 huft_build: 1560 0x0018 init_module: 1512 (after patch:) 0x0000000d callback [divacapi]: 1928 0xffffffff81678c09 huft_build [vmlinux]: 1560 0x0018 init_module [hdaps]: 1512 Also change one if-series to use elsif to cut down on unneeded tests. Signed-off-by: Randy Dunlap Acked-by: Joern Engel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/scripts/checkstack.pl b/scripts/checkstack.pl index dadfa20ffe..b34924663a 100755 --- a/scripts/checkstack.pl +++ b/scripts/checkstack.pl @@ -89,11 +89,21 @@ sub bysize($) { # my $funcre = qr/^$x* <(.*)>:$/; my $func; +my $file, $lastslash; + while (my $line = ) { if ($line =~ m/$funcre/) { $func = $1; } - if ($line =~ m/$re/) { + elsif ($line =~ m/(.*):\s*file format/) { + $file = $1; + $file =~ s/\.ko//; + $lastslash = rindex($file, "/"); + if ($lastslash != -1) { + $file = substr($file, $lastslash + 1); + } + } + elsif ($line =~ m/$re/) { my $size = $1; $size = hex($size) if ($size =~ /^0x/); @@ -109,7 +119,7 @@ while (my $line = ) { $addr =~ s/ /0/g; $addr = "0x$addr"; - my $intro = "$addr $func:"; + my $intro = "$addr $func [$file]:"; my $padlen = 56 - length($intro); while ($padlen > 0) { $intro .= ' ';