diff options
| author | Michael S. Tsirkin <mst@redhat.com> | 2016-01-04 09:39:01 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2016-01-12 20:47:07 +0200 |
| commit | 402c2553a24729688ba32453a9f6889e12754147 (patch) | |
| tree | 7d2a8a6d11480670b2d469c4162f2c0427abe0f1 /scripts/checkpatch.pl | |
| parent | f7ad26ff952b3ca2702d7da03aad0ab1f6c01d7c (diff) | |
| download | linux-0-day-402c2553a24729688ba32453a9f6889e12754147.tar.gz linux-0-day-402c2553a24729688ba32453a9f6889e12754147.tar.xz | |
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/checkpatch.pl')
| -rwxr-xr-x | scripts/checkpatch.pl | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 2b3c22808c3bf..94b4e33fa532d 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); |