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authorRandy Dunlap <rdunlap@xenotime.net>2006-06-25 12:48:29 (GMT)
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-25 17:01:15 (GMT)
commit8ad2914d9cc55be651ef3bd676981a72c9001a47 (patch)
tree4bba45d178fd4f48959fccc906b2287c52d09efe /scripts/checkstack.pl
parent5ec3e4b7aefbb8613b27ec4449fa8f9916ab9099 (diff)
[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 <rdunlap@xenotime.net> Acked-by: Joern Engel <joern@wh.fh-wedel.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'scripts/checkstack.pl')
-rwxr-xr-xscripts/checkstack.pl14
1 files changed, 12 insertions, 2 deletions
diff --git a/scripts/checkstack.pl b/scripts/checkstack.pl
index dadfa20..b349246 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 $line = <STDIN>) {
if ($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 = <STDIN>) {
$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 .= ' ';

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