WARNING: line length of 85 exceeds 80 columns
#46: FILE: tools/testing/selftests/bpf/prog_tests/perf_link.c:31:
+	*pfd = syscall(__NR_perf_event_open, &attr, 0, -1, -1, PERF_FLAG_FD_CLOEXEC);

WARNING: line length of 82 exceeds 80 columns
#80: FILE: tools/testing/selftests/bpf/prog_tests/perf_link.c:63:
+		if (!ASSERT_LT(get_time_ns(), timeout_time_ns, "run_cnt_timeout"))

WARNING: line length of 83 exceeds 80 columns
#84: FILE: tools/testing/selftests/bpf/prog_tests/perf_link.c:67:
+	/* detach via BPF_LINK_DETACH - BPF program should no longer be executed */

total: 0 errors, 3 warnings, 0 checks, 96 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 e06f6a0da212 ("selftests/bpf: Test LINK_DETACH for perf link") 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, 3 warnings, 0 checks, 96 lines checked