WARNING: line length of 81 exceeds 80 columns
#86: FILE: tools/testing/selftests/bpf/progs/kfunc_call_test.c:47:
+	 *   - Result: 32-bit multiplication, truncated to u8, then zero-extended

WARNING: line length of 82 exceeds 80 columns
#90: FILE: tools/testing/selftests/bpf/progs/kfunc_call_test.c:51:
+	 *   - Result: 32-bit multiplication, truncated to u16, then zero-extended

WARNING: line length of 91 exceeds 80 columns
#94: FILE: tools/testing/selftests/bpf/progs/kfunc_call_test.c:55:
+	 *   - Result: 64-bit unsigned multiplication, truncated to u32, then zero-extended

WARNING: line length of 87 exceeds 80 columns
#96: FILE: tools/testing/selftests/bpf/progs/kfunc_call_test.c:57:
+	ret = bpf_kfunc_call_test5(val8 * 0xFF, val16 * 0xFFFF, val32 * 0xFFFFffffULL);

CHECK: Lines should not end with a '('
#110: FILE: tools/testing/selftests/bpf/progs/kfunc_call_test.c:71:
+	asm volatile (

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#161: FILE: tools/testing/selftests/bpf/test_kmods/bpf_testmod.c:768:
+	volatile long val;

WARNING: line length of 88 exceeds 80 columns
#163: FILE: tools/testing/selftests/bpf/test_kmods/bpf_testmod.c:770:
+	/* val will be positive, if JIT does zero-extension instead of sign-extension */

WARNING: line length of 83 exceeds 80 columns
#186: FILE: tools/testing/selftests/bpf/test_kmods/bpf_testmod.c:793:
+	 * Make val as volatile to avoid compiler optimizations on the below checks

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#189: FILE: tools/testing/selftests/bpf/test_kmods/bpf_testmod.c:796:
+	volatile long val = a;

total: 0 errors, 8 warnings, 1 checks, 192 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 5197ac812d31 ("selftests/bpf: improve test coverage for kfunc call") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES 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, 192 lines checked