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| author | Joe Perches <joe@perches.com> | 2017-05-08 15:55:57 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-08 17:15:11 -0700 |
| commit | 1b4a2ed4c8773524cc7890c4cd57d58b39c049eb (patch) | |
| tree | 626671fa831a57cbf9f55653eba2284fe5343c45 /scripts | |
| parent | e882dbfc248cf28d6afd6fc6d8db8be58a824158 (diff) | |
| download | linux-stable-1b4a2ed4c8773524cc7890c4cd57d58b39c049eb.tar.gz linux-stable-1b4a2ed4c8773524cc7890c4cd57d58b39c049eb.tar.bz2 linux-stable-1b4a2ed4c8773524cc7890c4cd57d58b39c049eb.zip | |
checkpatch: improve k.alloc with multiplication and sizeof test
Find multi-line uses of k.alloc by using the $stat variable and not the
$line variable. This can still --fix only the single line variant
though.
Link: http://lkml.kernel.org/r/3f4b23d37cd4c7d8628eefc25afe83ba8fb3ab55.1493167076.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts')
| -rwxr-xr-x | scripts/checkpatch.pl | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index b1befa2cec26..d2c074feaa7d 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -5922,7 +5922,8 @@ sub process { # check for k[mz]alloc with multiplies that could be kmalloc_array/kcalloc if ($^V && $^V ge 5.10.0 && - $line =~ /\b($Lval)\s*\=\s*(?:$balanced_parens)?\s*(k[mz]alloc)\s*\(\s*($FuncArg)\s*\*\s*($FuncArg)\s*,/) { + defined $stat && + $stat =~ /^\+\s*($Lval)\s*\=\s*(?:$balanced_parens)?\s*(k[mz]alloc)\s*\(\s*($FuncArg)\s*\*\s*($FuncArg)\s*,/) { my $oldfunc = $3; my $a1 = $4; my $a2 = $10; @@ -5936,11 +5937,17 @@ sub process { } if ($r1 !~ /^sizeof\b/ && $r2 =~ /^sizeof\s*\S/ && !($r1 =~ /^$Constant$/ || $r1 =~ /^[A-Z_][A-Z0-9_]*$/)) { + my $ctx = ''; + my $herectx = $here . "\n"; + my $cnt = statement_rawlines($stat); + for (my $n = 0; $n < $cnt; $n++) { + $herectx .= raw_line($linenr, $n) . "\n"; + } if (WARN("ALLOC_WITH_MULTIPLY", - "Prefer $newfunc over $oldfunc with multiply\n" . $herecurr) && + "Prefer $newfunc over $oldfunc with multiply\n" . $herectx) && + $cnt == 1 && $fix) { $fixed[$fixlinenr] =~ s/\b($Lval)\s*\=\s*(?:$balanced_parens)?\s*(k[mz]alloc)\s*\(\s*($FuncArg)\s*\*\s*($FuncArg)/$1 . ' = ' . "$newfunc(" . trim($r1) . ', ' . trim($r2)/e; - } } } |