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authorMichael S. Tsirkin <mst@redhat.com>2016-01-04 09:39:01 +0200
committerMichael S. Tsirkin <mst@redhat.com>2016-01-12 20:47:07 +0200
commit402c2553a24729688ba32453a9f6889e12754147 (patch)
tree7d2a8a6d11480670b2d469c4162f2c0427abe0f1 /scripts
parentvirtio: make find_vqs() checkpatch.pl-friendly (diff)
downloadlinux-dev-402c2553a24729688ba32453a9f6889e12754147.tar.xz
linux-dev-402c2553a24729688ba32453a9f6889e12754147.zip
checkpatch.pl: add missing memory barriers
SMP-only barriers were missing in checkpatch.pl Refactor code slightly to make adding more variants easier. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Julian Calaby <julian.calaby@gmail.com> Acked-by: Joe Perches <joe@perches.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Diffstat (limited to 'scripts')
-rwxr-xr-xscripts/checkpatch.pl22
1 files changed, 21 insertions, 1 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 2b3c22808c3b..94b4e33fa532 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -5116,7 +5116,27 @@ sub process {
}
}
# check for memory barriers without a comment.
- if ($line =~ /\b(mb|rmb|wmb|read_barrier_depends|smp_mb|smp_rmb|smp_wmb|smp_read_barrier_depends)\(/) {
+
+ my $barriers = qr{
+ mb|
+ rmb|
+ wmb|
+ read_barrier_depends
+ }x;
+ my $barrier_stems = qr{
+ mb__before_atomic|
+ mb__after_atomic|
+ store_release|
+ load_acquire|
+ store_mb|
+ (?:$barriers)
+ }x;
+ my $all_barriers = qr{
+ (?:$barriers)|
+ smp_(?:$barrier_stems)
+ }x;
+
+ if ($line =~ /\b(?:$all_barriers)\s*\(/) {
if (!ctx_has_comment($first_line, $linenr)) {
WARN("MEMORY_BARRIER",
"memory barrier without comment\n" . $herecurr);