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checkpatch: warn on embedded function names 

Embedded function names are less appropriate to use when refactoring can
cause function renaming.  Prefer the use of "%s", __func__ to embedded
function names.

Link: http://lkml.kernel.org/r/ac9631fdbac5af3507c5bfe88ad9064f0ed764ec.1483510416.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joe Perches 2017-02-24 15:01:28 -08:00 committed by Linus Torvalds
parent 69c78423b8
commit 77cb8546bc
1 changed files with 20 additions and 2 deletions
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22
scripts/checkpatch.pl
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@ -2134,7 +2134,7 @@ sub process {
my $in_header_lines = $file ? 0 : 1;
my $in_commit_log = 0; #Scanning lines before patch
my $has_commit_log = 0; #Encountered lines before patch
my $commit_log_possible_stack_dump = 0;
my $commit_log_possible_stack_dump = 0;
my $commit_log_long_line = 0;
my $commit_log_has_diff = 0;
my $reported_maintainer_file = 0;
@ -2154,6 +2154,7 @@ sub process {
my $realline = 0;
my $realcnt = 0;
my $here = '';
my $context_function; #undef'd unless there's a known function
my $in_comment = 0;
my $comment_edge = 0;
my $first_line = 0;
@ -2192,7 +2193,8 @@ sub process {
}
#next;
}
if ($rawline=~/^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@/) {
if ($rawline=~/^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@(.*)/) {
my $context = $4;
$realline=$1-1;
if (defined $2) {
$realcnt=$3+1;
@ -2201,6 +2203,12 @@ sub process {
}
$in_comment = 0;
if ($context =~ /\b(\w+)\s*\(/) {
$context_function = $1;
} else {
undef $context_function;
}
# Guestimate if this is a continuing comment. Run
# the context looking for a comment "edge". If this
# edge is a close comment then we must be in a comment
@ -5157,6 +5165,16 @@ sub process {
"break quoted strings at a space character\n" . $hereprev);
}
#check for an embedded function name in a string when the function is known
# as part of a diff. This does not work for -f --file checking as it
#depends on patch context providing the function name
if ($line =~ /^\+.*$String/ &&
defined($context_function) &&
get_quoted_string($line, $rawline) =~ /\b$context_function\b/) {
WARN("EMBEDDED_FUNCTION_NAME",
"Prefer using \"%s\", __func__ to embedded function names\n" . $herecurr);
}
# check for spaces before a quoted newline
if ($rawline =~ /^.*\".*\s\\n/) {
if (WARN("QUOTED_WHITESPACE_BEFORE_NEWLINE",