Re: [PATCH bpf] samples/bpf: use canonical fallthrough pseudo-keyword in hbm.c

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On 5/15/23 1:02 PM, Andrii Nakryiko wrote:
Rename now unsupported __fallthrough into fallthrough ([0]) in
samples/bpf/hbm.c to fix samples/bpf compilation.

   [0] https://www.kernel.org/doc/html/latest/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Andrii Nakryiko <andrii@xxxxxxxxxx>

LGTM. But there is an alternative, see below.

Acked-by: Yonghong Song <yhs@xxxxxx>

---
  samples/bpf/hbm.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/samples/bpf/hbm.c b/samples/bpf/hbm.c
index 6448b7826107..7ddf25e9d098 100644
--- a/samples/bpf/hbm.c
+++ b/samples/bpf/hbm.c
@@ -498,7 +498,7 @@ int main(int argc, char **argv)
  					"Option -%c requires an argument.\n\n",
  					optopt);
  		case 'h':
-			__fallthrough;
+			fallthrough;

We could remove this 'fallthrough' completely since there is
no code under case 'h'.

  		default:
  			Usage();
  			return 0;




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