checkpatch: add new alloc functions to alloc with multiplies check

kvmalloc() and kvzalloc() functions have now 2-factor multiplication
argument forms kvmalloc_array() and kvcalloc(), correspondingly.

Add alloc-with-multiplies checks for these new functions.

Link: https://github.com/KSPP/linux/issues/187
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 577e029987011ebc7a24f6bf4ced4b17e9bdcdec..503e8abbb2c1e42767d8bf3338640a095b78b483 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -7033,14 +7033,16 @@ sub process {
                            "Prefer $3(sizeof(*$1)...) over $3($4...)\n" . $herecurr);
                }
 
-# check for k[mz]alloc with multiplies that could be kmalloc_array/kcalloc
+# check for (kv|k)[mz]alloc with multiplies that could be kmalloc_array/kvmalloc_array/kvcalloc/kcalloc
                if ($perl_version_ok &&
                    defined $stat &&
-                   $stat =~ /^\+\s*($Lval)\s*\=\s*(?:$balanced_parens)?\s*(k[mz]alloc)\s*\(\s*($FuncArg)\s*\*\s*($FuncArg)\s*,/) {
+                   $stat =~ /^\+\s*($Lval)\s*\=\s*(?:$balanced_parens)?\s*((?:kv|k)[mz]alloc)\s*\(\s*($FuncArg)\s*\*\s*($FuncArg)\s*,/) {
                        my $oldfunc = $3;
                        my $a1 = $4;
                        my $a2 = $10;
                        my $newfunc = "kmalloc_array";
+                       $newfunc = "kvmalloc_array" if ($oldfunc eq "kvmalloc");
+                       $newfunc = "kvcalloc" if ($oldfunc eq "kvzalloc");
                        $newfunc = "kcalloc" if ($oldfunc eq "kzalloc");
                        my $r1 = $a1;
                        my $r2 = $a2;
@@ -7057,7 +7059,7 @@ sub process {
                                         "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;
+                                       $fixed[$fixlinenr] =~ s/\b($Lval)\s*\=\s*(?:$balanced_parens)?\s*((?:kv|k)[mz]alloc)\s*\(\s*($FuncArg)\s*\*\s*($FuncArg)/$1 . ' = ' . "$newfunc(" . trim($r1) . ', ' . trim($r2)/e;
                                }
                        }
                }