WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#24: 
new file mode 100644

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#42: FILE: tools/testing/selftests/bpf/prog_tests/res_spin_lock.c:14:
+static volatile int skip;

CHECK: No space is necessary after a cast
#46: FILE: tools/testing/selftests/bpf/prog_tests/res_spin_lock.c:18:
+	int err, prog_fd = *(u32 *) arg;

WARNING: Missing a blank line after declarations
#47: FILE: tools/testing/selftests/bpf/prog_tests/res_spin_lock.c:19:
+	int err, prog_fd = *(u32 *) arg;
+	LIBBPF_OPTS(bpf_test_run_opts, topts,

CHECK: Alignment should match open parenthesis
#48: FILE: tools/testing/selftests/bpf/prog_tests/res_spin_lock.c:20:
+	LIBBPF_OPTS(bpf_test_run_opts, topts,
+		.data_in = &pkt_v4,

CHECK: Alignment should match open parenthesis
#64: FILE: tools/testing/selftests/bpf/prog_tests/res_spin_lock.c:36:
+	LIBBPF_OPTS(bpf_test_run_opts, topts,
+		.data_in = &pkt_v4,

WARNING: line length of 87 exceeds 80 columns
#93: FILE: tools/testing/selftests/bpf/prog_tests/res_spin_lock.c:65:
+		err = pthread_create(&thread_id[i], NULL, &spin_lock_thread, &prog_fd);

WARNING: Missing a blank line after declarations
#101: FILE: tools/testing/selftests/bpf/prog_tests/res_spin_lock.c:73:
+	int fd = bpf_program__fd(skel->progs.res_spin_lock_test_BA);
+	while (!topts.retval && !err && !READ_ONCE(skel->bss->err)) {

WARNING: braces {} are not necessary for single statement blocks
#101: FILE: tools/testing/selftests/bpf/prog_tests/res_spin_lock.c:73:
+	while (!topts.retval && !err && !READ_ONCE(skel->bss->err)) {
+		err = bpf_prog_test_run_opts(fd, &topts);
+	}

WARNING: line length of 81 exceeds 80 columns
#108: FILE: tools/testing/selftests/bpf/prog_tests/res_spin_lock.c:80:
+		if (!ASSERT_OK(pthread_join(thread_id[i], &ret), "pthread_join"))

WARNING: void function return statements are not generally useful
#120: FILE: tools/testing/selftests/bpf/prog_tests/res_spin_lock.c:92:
+	return;
+}

WARNING: line length of 88 exceeds 80 columns
#292: FILE: tools/testing/selftests/bpf/progs/res_spin_lock.c:97:
+		/* We cannot pass in i as it will get spilled/filled by the compiler and

WARNING: line length of 88 exceeds 80 columns
#304: FILE: tools/testing/selftests/bpf/progs/res_spin_lock.c:109:
+		/* We cannot pass in i as it will get spilled/filled by the compiler and

WARNING: line length of 100 exceeds 80 columns
#379: FILE: tools/testing/selftests/bpf/progs/res_spin_lock_fail.c:35:
+	bpf_res_spin_lock((struct bpf_res_spin_lock *)bpf_core_cast(&elem->lock, struct __sk_buff));

WARNING: line length of 81 exceeds 80 columns
#537: FILE: tools/testing/selftests/bpf/progs/res_spin_lock_fail.c:193:
+__failure __msg("off 1 doesn't point to 'struct bpf_res_spin_lock' that is at 0")

WARNING: line length of 102 exceeds 80 columns
#550: FILE: tools/testing/selftests/bpf/progs/res_spin_lock_fail.c:206:
+__failure __msg("R1 doesn't have constant offset. bpf_res_spin_lock has to be at the constant offset")

total: 0 errors, 13 warnings, 3 checks, 542 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 2856bb21b0f6 ("selftests/bpf: Add tests for rqspinlock") 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.
total: 0 errors, 13 warnings, 3 checks, 542 lines checked