perf: Mark expected switch fall-through
authorGustavo A. R. Silva <gustavo@embeddedor.com>
Tue, 12 Feb 2019 20:54:30 +0000 (14:54 -0600)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Fri, 1 Mar 2019 13:54:00 +0000 (10:54 -0300)
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

This patch fixes the following warning:

  kernel/events/core.c: In function â€˜perf_event_parse_addr_filter’:
  kernel/events/core.c:9154:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
      kernel = 1;
      ~~~~~~~^~~
  kernel/events/core.c:9156:3: note: here
     case IF_SRC_FILEADDR:
     ^~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enable -Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Gustavo A. R. Silva <gustavo@embeddedor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kees Kook <keescook@chromium.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190212205430.GA8446@embeddedor
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
kernel/events/core.c

index dd9698ad3d66ac87ca3cc8484952e5db640eb323..6fb27b564730c17bc4ee4a598ce143e7d2d1886a 100644 (file)
@@ -9175,6 +9175,7 @@ perf_event_parse_addr_filter(struct perf_event *event, char *fstr,
                case IF_SRC_KERNELADDR:
                case IF_SRC_KERNEL:
                        kernel = 1;
+                       /* fall through */
 
                case IF_SRC_FILEADDR:
                case IF_SRC_FILE: