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authorMauro Carvalho Chehab <mchehab+huawei@kernel.org>2021-09-23 17:41:18 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-09-23 18:45:08 +0200
commitf34f67292b5aab7907ec7a694d5733dbc1593b3b (patch)
tree5f45c57aa9fe4c699f56fca3a92937a9b24e5740 /scripts
parentcb06b8ddeb4790cb6caf744316ebea99d53996ee (diff)
downloadlinux-f34f67292b5aab7907ec7a694d5733dbc1593b3b.tar.bz2
scripts: get_abi.pl: precompile what match regexes
In order to earn some time during matches, pre-compile regexes. Before this patch: $ time ./scripts/get_abi.pl undefined |wc -l 6970 real 0m54,751s user 0m54,022s sys 0m0,592s Afterwards: $ time ./scripts/get_abi.pl undefined |wc -l 6970 real 0m5,888s user 0m5,310s sys 0m0,562s Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Link: https://lore.kernel.org/r/ec45de8fcae791aab0880644974a110424423e68.1632411447.git.mchehab+huawei@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'scripts')
-rwxr-xr-xscripts/get_abi.pl38
1 files changed, 29 insertions, 9 deletions
diff --git a/scripts/get_abi.pl b/scripts/get_abi.pl
index d45e5ba56f9c..f2b5efef9c30 100755
--- a/scripts/get_abi.pl
+++ b/scripts/get_abi.pl
@@ -25,6 +25,7 @@ my $search_string;
my $dbg_what_parsing = 1;
my $dbg_what_open = 2;
my $dbg_dump_abi_structs = 4;
+my $dbg_undefined = 8;
#
# If true, assumes that the description is formatted with ReST
@@ -692,7 +693,8 @@ sub check_undefined_symbols {
if (!defined($leaf{$leave})) {
$leave = "others";
}
- my $what = $leaf{$leave};
+ my @expr = @{$leaf{$leave}->{expr}};
+ die ("missing rules for $leave") if (!defined($leaf{$leave}));
my $path = $file;
$path =~ s,(.*/).*,$1,;
@@ -702,10 +704,17 @@ sub check_undefined_symbols {
$found_string = 1;
}
- foreach my $a (@names) {
- print "--> $a\n" if ($found_string && $hint);
- foreach my $w (split /\xac/, $what) {
- if ($a =~ m#^$w$#) {
+ for (my $i = 0; $i < @names; $i++) {
+ if ($found_string && $hint) {
+ if (!$i) {
+ print "--> $names[$i]\n";
+ } else {
+ print " $names[$i]\n";
+ }
+ }
+ foreach my $re (@expr) {
+ print "$names[$i] =~ /^$re\$/\n" if ($debug && $dbg_undefined);
+ if ($names[$i] =~ $re) {
$exact = 1;
last;
}
@@ -715,6 +724,7 @@ sub check_undefined_symbols {
next if ($exact);
if ($hint && (!$search_string || $found_string)) {
+ my $what = $leaf{$leave}->{what};
$what =~ s/\xac/\n\t/g;
if ($leave ne "others") {
print " more likely regexes:\n\t$what\n";
@@ -734,7 +744,7 @@ sub undefined_symbols {
no_chdir => 1
}, $sysfs_prefix);
- $leaf{"others"} = "";
+ $leaf{"others"}->{what} = "";
foreach my $w (sort keys %data) {
foreach my $what (split /\xac/,$w) {
@@ -792,14 +802,15 @@ sub undefined_symbols {
$what =~ s/sqrt(.*)/sqrt\(.*\)/;
my $leave = get_leave($what);
+
my $added = 0;
foreach my $l (split /\|/, $leave) {
if (defined($leaf{$l})) {
- next if ($leaf{$l} =~ m/\b$what\b/);
- $leaf{$l} .= "\xac" . $what;
+ next if ($leaf{$l}->{what} =~ m/\b$what\b/);
+ $leaf{$l}->{what} .= "\xac" . $what;
$added = 1;
} else {
- $leaf{$l} = $what;
+ $leaf{$l}->{what} = $what;
$added = 1;
}
}
@@ -809,6 +820,15 @@ sub undefined_symbols {
}
}
+ # Compile regexes
+ foreach my $l (keys %leaf) {
+ my @expr;
+ foreach my $w(split /\xac/, $leaf{$l}->{what}) {
+ push @expr, qr /^$w$/;
+ }
+ $leaf{$l}->{expr} = \@expr;
+ }
+
# Take links into account
foreach my $link (keys %aliases) {
my $abs_file = $aliases{$link};