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authorMauro Carvalho Chehab <mchehab+huawei@kernel.org>2021-09-30 11:40:00 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-10-05 16:23:38 +0200
commitdf2205de92975bdaabb115dfef5c513b26b36263 (patch)
tree178bdceb5d5810303eaa11484af064eabdc0779e /scripts/get_abi.pl
parent4dcce5b081555a33e97e06093910e6cfe6cb1023 (diff)
downloadlwn-df2205de92975bdaabb115dfef5c513b26b36263.tar.gz
lwn-df2205de92975bdaabb115dfef5c513b26b36263.zip
scripts: get_abi.pl: better generate regex from what fields
Using repeating sequencies of .* seem to slow down the processing speed on some cases. Also, currently, a "." character is not properly handled as such. Change the way regexes are created, in order to produce better search expressions. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Link: https://lore.kernel.org/r/c69c01c12b1b30466177dcb17e45f833fb47713d.1632994565.git.mchehab+huawei@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'scripts/get_abi.pl')
-rwxr-xr-xscripts/get_abi.pl13
1 files changed, 11 insertions, 2 deletions
diff --git a/scripts/get_abi.pl b/scripts/get_abi.pl
index 2f3674bb3c9e..6212f58b69c6 100755
--- a/scripts/get_abi.pl
+++ b/scripts/get_abi.pl
@@ -842,8 +842,8 @@ sub undefined_symbols {
# Convert what into regular expressions
- $what =~ s,/\.\.\./,/*/,g;
- $what =~ s,\*,.*,g;
+ # Escape dot characters
+ $what =~ s/\./\xf6/g;
# Temporarily change [0-9]+ type of patterns
$what =~ s/\[0\-9\]\+/\xff/g;
@@ -859,6 +859,8 @@ sub undefined_symbols {
$what =~ s/[\{\<\[]([\w_]+)(?:[,|]+([\w_]+)){1,}[\}\>\]]/($1|$2)/g;
# Handle wildcards
+ $what =~ s,\*,.*,g;
+ $what =~ s,/\xf6..,/.*,g;
$what =~ s/\<[^\>]+\>/.*/g;
$what =~ s/\{[^\}]+\}/.*/g;
$what =~ s/\[[^\]]+\]/.*/g;
@@ -891,6 +893,13 @@ sub undefined_symbols {
# Special case: IIO ABI which a parenthesis.
$what =~ s/sqrt(.*)/sqrt\(.*\)/;
+ # Simplify regexes with multiple .*
+ $what =~ s#(?:\.\*){2,}##g;
+# $what =~ s#\.\*/\.\*#.*#g;
+
+ # Recover dot characters
+ $what =~ s/\xf6/\./g;
+
my $leave = get_leave($what);
my $added = 0;