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checkstack: sort output by size and function name 

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
View File

@ -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;