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checkstack: sort output by size and function name

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Sort output by size and in addition by function name.  This increases
readability for cases where there are many functions with the same stack
usage.

Link: https://lkml.kernel.org/r/20231120183719.2188479-3-hca@linux.ibm.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Cc: Maninder Singh <maninder1.s@samsung.com>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Vaneet Narang <v.narang@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Heiko Carstens 2023-11-20 19:37:18 +01:00 committed by Andrew Morton
parent b454ec2922
commit fe1a25eb05
1 changed files with 17 additions and 2 deletions
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19
scripts/checkstack.pl
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@ -189,5 +189,20 @@ if ($total_size > $min_stack) {
push @stack, "$intro$total_size\n";
}
# Sort output by size (last field)
print sort { ($b =~ /:\t*(\d+)$/)[0] <=> ($a =~ /:\t*(\d+)$/)[0] } @stack;
# Sort output by size (last field) and function name if size is the same
sub sort_lines {
my ($a, $b) = @_;
my $num_a = $1 if $a =~ /:\t*(\d+)$/;
my $num_b = $1 if $b =~ /:\t*(\d+)$/;
my $func_a = $1 if $a =~ / (.*):/;
my $func_b = $1 if $b =~ / (.*):/;
if ($num_a != $num_b) {
return $num_b <=> $num_a;
} else {
return $func_a cmp $func_b;
}
}
print sort { sort_lines($a, $b) } @stack;