WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#39: 
new file mode 100644

WARNING: Prefer __section(name) over __attribute__((section(name)))
#56: FILE: tools/testing/selftests/bpf/prog_tests/usdt_o2.c:13:
+#define SEC(name) __attribute__((section(name), used))

WARNING: Prefer __used over __attribute__((used))
#56: FILE: tools/testing/selftests/bpf/prog_tests/usdt_o2.c:13:
+#define SEC(name) __attribute__((section(name), used))

WARNING: externs should be avoided in .c files
#58: FILE: tools/testing/selftests/bpf/prog_tests/usdt_o2.c:15:
+int lets_test_this(int);

WARNING: function definition argument 'int' should also have an identifier name
#58: FILE: tools/testing/selftests/bpf/prog_tests/usdt_o2.c:15:
+int lets_test_this(int);

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#59: FILE: tools/testing/selftests/bpf/prog_tests/usdt_o2.c:16:
+static volatile __u64 array[1] = {test_value};

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#64: FILE: tools/testing/selftests/bpf/prog_tests/usdt_o2.c:21:
+	for (volatile int i = 0; i <= 0; i++)

WARNING: line length of 82 exceeds 80 columns
#89: FILE: tools/testing/selftests/bpf/prog_tests/usdt_o2.c:46:
+						     0 /*self*/, "/proc/self/exe",

CHECK: Please don't use multiple blank lines
#107: FILE: tools/testing/selftests/bpf/prog_tests/usdt_o2.c:64:
+
+

total: 0 errors, 8 warnings, 1 checks, 113 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 3fa7f5815110 ("selftests/bpf: Add an usdt_o2 test case in selftests to cover SIB handling logic") 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, 8 warnings, 1 checks, 113 lines checked