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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>
This commit is contained in:
Mauro Carvalho Chehab 2021-09-30 11:40:00 +02:00 committed by Greg Kroah-Hartman
parent 4dcce5b081
commit df2205de92
1 changed files with 11 additions and 2 deletions
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13
scripts/get_abi.pl
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@ -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;