diff options
author | Mauro Carvalho Chehab <mchehab@kernel.org> | 2022-12-04 12:45:53 +0100 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@kernel.org> | 2024-02-15 21:04:46 +0100 |
commit | 4784ef7499c447a4091da7e4e0f4616abe9bb0ef (patch) | |
tree | dff709dc4144dd2ec9e79723928c2935846c343a /scripts | |
parent | 6c97900a1030950818b31e5a106a131fd94d59c3 (diff) |
scripts/code_cov_parse_info: better handle branch filtering
Add an option to filter out branches that aren't associated with
any functions inside the file (e. g. they came from #inline
directives).
While here, also address some issues at the branch report.
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Acked-by: Kamil Konieczny <kamil.konieczny@linux.intel.com>
Diffstat (limited to 'scripts')
-rwxr-xr-x | scripts/code_cov_parse_info | 71 |
1 files changed, 51 insertions, 20 deletions
diff --git a/scripts/code_cov_parse_info b/scripts/code_cov_parse_info index ea4f64b34..57bc4c2f0 100755 --- a/scripts/code_cov_parse_info +++ b/scripts/code_cov_parse_info @@ -25,6 +25,8 @@ my @func_exclude_regexes; my %test_names; my @src_include_regexes; my @src_exclude_regexes; +my $can_filter_lines = 1; +my $ignore_lines_without_functions = 1; my $verbose = 0; my $ignore_unused = 0; @@ -161,12 +163,6 @@ sub parse_json_gcov_v1($$) my $func = $line_ref->{'function_name'}; if (!$func) { - # Ignore DA/BRDA that aren't associated with - # functions. Those are present on header files - # (maybe defines?) - next if (@func_include_regexes); - - # Otherwise place them in separate $func = $before_sf; } else { next if is_function_excluded($func); @@ -188,9 +184,17 @@ sub parse_json_gcov_v1($$) my $i = 0; for my $branch_ref (@{$line_ref->{'branches'}}) { - my $taken = $branch_ref->{'count'}; my $where = sprintf "%d,%d,%d", $ln, 0, $i; + if ($func eq $before_sf) { + # Ignore DA/BRDA that aren't associated with + # functions. Those are present on header files + # (maybe defines?) + next if ($ignore_lines_without_functions); + } else { + $all_branch{$source}{$where}{func} = $func; + } + # Negative gcov results are possible, as # reported at: # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67937 @@ -206,7 +210,8 @@ sub parse_json_gcov_v1($$) } } - $all_branch{$source}{$where}{count} += $taken; + $all_branch{$source}{$where}{count} += $branch_ref->{'count'}; + $i++; } if (!defined($record{files}{$source}{line}{$ln}{branches})) { @@ -383,6 +388,10 @@ sub read_info($) my $func = $before_sf; my $cur_test = ""; + # Info files don't contain functions for lines. So, they can't + # be used to filter lines and branches used inside functions. + $can_filter_lines = 0; + # First step: parse data # For details on .info file format, see "man geninfo" @@ -1231,18 +1240,15 @@ sub check_source_branches() return; } + my $func_ln; my $func = $all_branch{$source}{$where}{func}; - my $func_ln = $all_branch{$source}{$where}{func_ln}; - - print "Branch $source:$ln, "; if ($func) { - if ($func_ln) { - print "func: $func, "; - } else { - print "func: $func:$func_ln, "; - } + $func_ln = $all_func{$func}{$source}->{ln}; } - print "block $block, branch $branch not taken:\n"; + + print "Branch $branch on $source:$ln"; + print ", function: $func" if ($func); + print " not taken:\n"; if ($func_ln) { $ctx_lines = $ln - $func_ln; @@ -1250,14 +1256,14 @@ sub check_source_branches() $ctx_lines = 10; } - # Search for up to $ctx_lines before the occurrence my $context = ""; my $has_if; $ln-- if ($ln > 0); my $delim = "->"; for (my $if_ln = $ln; $if_ln >= 0 && (($ln - $if_ln) < $ctx_lines); $if_ln--) { - $context = "$if_ln$delim\t$lines[$if_ln]" . $context; + my $cur_ln = $if_ln + 1; + $context = "$cur_ln$delim\t$lines[$if_ln]" . $context; $delim = ""; if ($lines[$if_ln] =~ m/(\bif\b|#if)/) { $has_if = 1; @@ -1267,7 +1273,8 @@ sub check_source_branches() if ($has_if) { print $context; } else { - print "$ln->\t$lines[$ln]"; + my $cur_ln = $ln + 1; + print "$cur_ln->\t$lines[$ln]"; } } } @@ -1308,6 +1315,7 @@ GetOptions( "source-filters|S=s" => \$src_filters, "include-source=s" => \@src_include_regexes, "exclude-source=s" => \@src_exclude_regexes, + "ignore-lines-without-functions!" => \$ignore_lines_without_functions, "show-files|show_files" => \$show_files, "show-lines|show_lines" => \$show_lines, "report|r=s" => \$gen_report, @@ -1438,6 +1446,10 @@ print_summary() if ($stat); if ($has_filter) { my $percent = 100. * $stats{"used_files"} / $stats{"all_files"}; + if (!$can_filter_lines) { + printf "Warning......: Function filters won't work with lines/branches\n"; + } + printf "Filters......:%s.\n", $filter_str; printf "Source files.: %.2f%% (%d of %d total)", $percent, $stats{"used_files"}, $stats{"all_files"}; @@ -1696,6 +1708,25 @@ report and decrease the code coverage statistics. This option is automaticaly enabled when B<--func-filters> is used. +=item B<--ignore-lines-without-functions> + +This option works only when the input file is in JSON format. + +Basically, include files may contain several lines of codes that aren't +assigned to any functions inside a source file. This is a common behavior +for macros and inlined functions inside headers. + +When this option is selected, the branches stat won't contain any such code. + +Please notice that this is enabled by default. + +Use B<--no-ignore-lines-without-functions> to disable it. + +=item B<--no-ignore-lines-without-functions> + +Disables filtering out branches that are not associated with any functions +inside the source file, but were imported via includes. + =back =item B<--show-files> or B<--show_files> |