selftests/bpf: Remove tests for zeroed-array kptr

bpf_mem_alloc() doesn't support zero-sized allocation, so removing these
tests from test_bpf_ma test. After the removal, there will no definition
for bin_data_8, so remove 8 from data_sizes array and adjust the index
of data_btf_ids array in all test cases accordingly.

Signed-off-by: Hou Tao <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexei Starovoitov <[email protected]>

Author: Hou Tao

tools/testing/selftests/bpf/progs/test_bpf_ma.c

@@ -17,7 +17,7 @@ struct generic_map_value {
 
 char _license[] SEC("license") = "GPL";
 
-const unsigned int data_sizes[] = {8, 16, 32, 64, 96, 128, 192, 256, 512, 1024, 2048, 4096};
+const unsigned int data_sizes[] = {16, 32, 64, 96, 128, 192, 256, 512, 1024, 2048, 4096};
 const volatile unsigned int data_btf_ids[ARRAY_SIZE(data_sizes)] = {};
 
 int err = 0;
@@ -166,7 +166,7 @@ static __always_inline void batch_percpu_free(struct bpf_map *map, unsigned int
 		batch_percpu_free((struct bpf_map *)(&array_percpu_##size), batch, idx); \
 	} while (0)
 
-DEFINE_ARRAY_WITH_KPTR(8);
+/* kptr doesn't support bin_data_8 which is a zero-sized array */
 DEFINE_ARRAY_WITH_KPTR(16);
 DEFINE_ARRAY_WITH_KPTR(32);
 DEFINE_ARRAY_WITH_KPTR(64);
@@ -198,21 +198,20 @@ int test_batch_alloc_free(void *ctx)
 	if ((u32)bpf_get_current_pid_tgid() != pid)
 		return 0;
 
-	/* Alloc 128 8-bytes objects in batch to trigger refilling,
-	 * then free 128 8-bytes objects in batch to trigger freeing.
+	/* Alloc 128 16-bytes objects in batch to trigger refilling,
+	 * then free 128 16-bytes objects in batch to trigger freeing.
 	 */
-	CALL_BATCH_ALLOC_FREE(8, 128, 0);
-	CALL_BATCH_ALLOC_FREE(16, 128, 1);
-	CALL_BATCH_ALLOC_FREE(32, 128, 2);
-	CALL_BATCH_ALLOC_FREE(64, 128, 3);
-	CALL_BATCH_ALLOC_FREE(96, 128, 4);
-	CALL_BATCH_ALLOC_FREE(128, 128, 5);
-	CALL_BATCH_ALLOC_FREE(192, 128, 6);
-	CALL_BATCH_ALLOC_FREE(256, 128, 7);
-	CALL_BATCH_ALLOC_FREE(512, 64, 8);
-	CALL_BATCH_ALLOC_FREE(1024, 32, 9);
-	CALL_BATCH_ALLOC_FREE(2048, 16, 10);
-	CALL_BATCH_ALLOC_FREE(4096, 8, 11);
+	CALL_BATCH_ALLOC_FREE(16, 128, 0);
+	CALL_BATCH_ALLOC_FREE(32, 128, 1);
+	CALL_BATCH_ALLOC_FREE(64, 128, 2);
+	CALL_BATCH_ALLOC_FREE(96, 128, 3);
+	CALL_BATCH_ALLOC_FREE(128, 128, 4);
+	CALL_BATCH_ALLOC_FREE(192, 128, 5);
+	CALL_BATCH_ALLOC_FREE(256, 128, 6);
+	CALL_BATCH_ALLOC_FREE(512, 64, 7);
+	CALL_BATCH_ALLOC_FREE(1024, 32, 8);
+	CALL_BATCH_ALLOC_FREE(2048, 16, 9);
+	CALL_BATCH_ALLOC_FREE(4096, 8, 10);
 
 	return 0;
 }
@@ -223,21 +222,20 @@ int test_free_through_map_free(void *ctx)
 	if ((u32)bpf_get_current_pid_tgid() != pid)
 		return 0;
 
-	/* Alloc 128 8-bytes objects in batch to trigger refilling,
+	/* Alloc 128 16-bytes objects in batch to trigger refilling,
 	 * then free these objects through map free.
 	 */
-	CALL_BATCH_ALLOC(8, 128, 0);
-	CALL_BATCH_ALLOC(16, 128, 1);
-	CALL_BATCH_ALLOC(32, 128, 2);
-	CALL_BATCH_ALLOC(64, 128, 3);
-	CALL_BATCH_ALLOC(96, 128, 4);
-	CALL_BATCH_ALLOC(128, 128, 5);
-	CALL_BATCH_ALLOC(192, 128, 6);
-	CALL_BATCH_ALLOC(256, 128, 7);
-	CALL_BATCH_ALLOC(512, 64, 8);
-	CALL_BATCH_ALLOC(1024, 32, 9);
-	CALL_BATCH_ALLOC(2048, 16, 10);
-	CALL_BATCH_ALLOC(4096, 8, 11);
+	CALL_BATCH_ALLOC(16, 128, 0);
+	CALL_BATCH_ALLOC(32, 128, 1);
+	CALL_BATCH_ALLOC(64, 128, 2);
+	CALL_BATCH_ALLOC(96, 128, 3);
+	CALL_BATCH_ALLOC(128, 128, 4);
+	CALL_BATCH_ALLOC(192, 128, 5);
+	CALL_BATCH_ALLOC(256, 128, 6);
+	CALL_BATCH_ALLOC(512, 64, 7);
+	CALL_BATCH_ALLOC(1024, 32, 8);
+	CALL_BATCH_ALLOC(2048, 16, 9);
+	CALL_BATCH_ALLOC(4096, 8, 10);
 
 	return 0;
 }
@@ -251,17 +249,17 @@ int test_batch_percpu_alloc_free(void *ctx)
 	/* Alloc 128 16-bytes per-cpu objects in batch to trigger refilling,
 	 * then free 128 16-bytes per-cpu objects in batch to trigger freeing.
 	 */
-	CALL_BATCH_PERCPU_ALLOC_FREE(16, 128, 1);
-	CALL_BATCH_PERCPU_ALLOC_FREE(32, 128, 2);
-	CALL_BATCH_PERCPU_ALLOC_FREE(64, 128, 3);
-	CALL_BATCH_PERCPU_ALLOC_FREE(96, 128, 4);
-	CALL_BATCH_PERCPU_ALLOC_FREE(128, 128, 5);
-	CALL_BATCH_PERCPU_ALLOC_FREE(192, 128, 6);
-	CALL_BATCH_PERCPU_ALLOC_FREE(256, 128, 7);
-	CALL_BATCH_PERCPU_ALLOC_FREE(512, 64, 8);
-	CALL_BATCH_PERCPU_ALLOC_FREE(1024, 32, 9);
-	CALL_BATCH_PERCPU_ALLOC_FREE(2048, 16, 10);
-	CALL_BATCH_PERCPU_ALLOC_FREE(4096, 8, 11);
+	CALL_BATCH_PERCPU_ALLOC_FREE(16, 128, 0);
+	CALL_BATCH_PERCPU_ALLOC_FREE(32, 128, 1);
+	CALL_BATCH_PERCPU_ALLOC_FREE(64, 128, 2);
+	CALL_BATCH_PERCPU_ALLOC_FREE(96, 128, 3);
+	CALL_BATCH_PERCPU_ALLOC_FREE(128, 128, 4);
+	CALL_BATCH_PERCPU_ALLOC_FREE(192, 128, 5);
+	CALL_BATCH_PERCPU_ALLOC_FREE(256, 128, 6);
+	CALL_BATCH_PERCPU_ALLOC_FREE(512, 64, 7);
+	CALL_BATCH_PERCPU_ALLOC_FREE(1024, 32, 8);
+	CALL_BATCH_PERCPU_ALLOC_FREE(2048, 16, 9);
+	CALL_BATCH_PERCPU_ALLOC_FREE(4096, 8, 10);
 
 	return 0;
 }
@@ -275,17 +273,17 @@ int test_percpu_free_through_map_free(void *ctx)
 	/* Alloc 128 16-bytes per-cpu objects in batch to trigger refilling,
 	 * then free these object through map free.
 	 */
-	CALL_BATCH_PERCPU_ALLOC(16, 128, 1);
-	CALL_BATCH_PERCPU_ALLOC(32, 128, 2);
-	CALL_BATCH_PERCPU_ALLOC(64, 128, 3);
-	CALL_BATCH_PERCPU_ALLOC(96, 128, 4);
-	CALL_BATCH_PERCPU_ALLOC(128, 128, 5);
-	CALL_BATCH_PERCPU_ALLOC(192, 128, 6);
-	CALL_BATCH_PERCPU_ALLOC(256, 128, 7);
-	CALL_BATCH_PERCPU_ALLOC(512, 64, 8);
-	CALL_BATCH_PERCPU_ALLOC(1024, 32, 9);
-	CALL_BATCH_PERCPU_ALLOC(2048, 16, 10);
-	CALL_BATCH_PERCPU_ALLOC(4096, 8, 11);
+	CALL_BATCH_PERCPU_ALLOC(16, 128, 0);
+	CALL_BATCH_PERCPU_ALLOC(32, 128, 1);
+	CALL_BATCH_PERCPU_ALLOC(64, 128, 2);
+	CALL_BATCH_PERCPU_ALLOC(96, 128, 3);
+	CALL_BATCH_PERCPU_ALLOC(128, 128, 4);
+	CALL_BATCH_PERCPU_ALLOC(192, 128, 5);
+	CALL_BATCH_PERCPU_ALLOC(256, 128, 6);
+	CALL_BATCH_PERCPU_ALLOC(512, 64, 7);
+	CALL_BATCH_PERCPU_ALLOC(1024, 32, 8);
+	CALL_BATCH_PERCPU_ALLOC(2048, 16, 9);
+	CALL_BATCH_PERCPU_ALLOC(4096, 8, 10);
 
 	return 0;
 }