WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#25: 
new file mode 100644

WARNING: void function return statements are not generally useful
#50: FILE: tools/testing/selftests/bpf/prog_tests/stream.c:21:
+	return;
+}

CHECK: multiple assignments should be avoided
#76: FILE: tools/testing/selftests/bpf/prog_tests/stream.c:47:
+		skel->bss->written_count = skel->bss->written_size = 0;

WARNING: line length of 114 exceeds 80 columns
#77: FILE: tools/testing/selftests/bpf/prog_tests/stream.c:48:
+		ret = bpf_prog_test_run_opts(bpf_program__fd(skel->progs.stream_bpftool_dump_prog_stream), &opts);

WARNING: line length of 122 exceeds 80 columns
#78: FILE: tools/testing/selftests/bpf/prog_tests/stream.c:49:
+		ASSERT_EQ(ring_buffer__consume_n(ringbuf, skel->bss->written_count), skel->bss->written_count, "consume");

ERROR: Macros with complex values should be enclosed in parentheses
#138: FILE: tools/testing/selftests/bpf/progs/stream.c:10:
+#define STREAM_STR (u64)(_STR _STR _STR _STR)

WARNING: line length of 100 exceeds 80 columns
#170: FILE: tools/testing/selftests/bpf/progs/stream.c:42:
+		if ((ret = bpf_stream_vprintk(stream, "%llu%s", &(u64[]){i, STREAM_STR}, 16)) < 0) {

CHECK: Unnecessary parentheses around u64[]
#170: FILE: tools/testing/selftests/bpf/progs/stream.c:42:
+		if ((ret = bpf_stream_vprintk(stream, "%llu%s", &(u64[]){i, STREAM_STR}, 16)) < 0) {

ERROR: do not use assignment in if condition
#170: FILE: tools/testing/selftests/bpf/progs/stream.c:42:
+		if ((ret = bpf_stream_vprintk(stream, "%llu%s", &(u64[]){i, STREAM_STR}, 16)) < 0) {

CHECK: spaces preferred around that '*' (ctx:WxV)
#300: FILE: tools/testing/selftests/bpf/progs/stream_bpftool.c:16:
+	struct bpf_stream_elem_batch __kptr *batch;
 	                                    ^

CHECK: Blank lines aren't necessary before a close brace '}'
#358: FILE: tools/testing/selftests/bpf/progs/stream_bpftool.c:74:
+
+}

WARNING: return of an errno should typically be negative (ie: return -ENOENT)
#375: FILE: tools/testing/selftests/bpf/progs/stream_bpftool.c:91:
+		return ENOENT;

WARNING: line length of 87 exceeds 80 columns
#407: FILE: tools/testing/selftests/bpf/progs/stream_bpftool.c:123:
+		/* Probe and exit if no more space, probe for twice the typical size.*/

CHECK: spaces preferred around that '*' (ctx:WxV)
#441: FILE: tools/testing/selftests/bpf/progs/stream_fail.c:9:
+	struct bpf_stream_elem_batch __kptr *batch;
 	                                    ^

CHECK: Please don't use multiple blank lines
#451: FILE: tools/testing/selftests/bpf/progs/stream_fail.c:19:
+
+

total: 2 errors, 7 warnings, 6 checks, 418 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 7f1e0d5a5bce ("selftests/bpf: Add tests for prog streams") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.