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authorJoe Perches <joe@perches.com>2017-05-08 15:55:57 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-08 17:15:11 -0700
commit1b4a2ed4c8773524cc7890c4cd57d58b39c049eb (patch)
tree626671fa831a57cbf9f55653eba2284fe5343c45 /scripts
parente882dbfc248cf28d6afd6fc6d8db8be58a824158 (diff)
downloadlinux-sh-1b4a2ed4c8773524cc7890c4cd57d58b39c049eb.tar.gz
checkpatch: improve k.alloc with multiplication and sizeof test
Find multi-line uses of k.alloc by using the $stat variable and not the $line variable. This can still --fix only the single line variant though. Link: http://lkml.kernel.org/r/3f4b23d37cd4c7d8628eefc25afe83ba8fb3ab55.1493167076.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts')
-rwxr-xr-xscripts/checkpatch.pl13
1 files changed, 10 insertions, 3 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index b1befa2cec26..d2c074feaa7d 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -5922,7 +5922,8 @@ sub process {
# check for k[mz]alloc with multiplies that could be kmalloc_array/kcalloc
if ($^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;
-
}
}
}