WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#31: FILE: tools/testing/selftests/bpf/prog_tests/send_signal.c:20:
+	volatile int j = 0;

WARNING: line length of 84 exceeds 80 columns
#60: FILE: tools/testing/selftests/bpf/prog_tests/send_signal.c:58:
+			ASSERT_OK(setpriority(PRIO_PROCESS, 0, -20), "setpriority");

WARNING: line length of 87 exceeds 80 columns
#76: FILE: tools/testing/selftests/bpf/prog_tests/send_signal.c:74:
+					/* trigger the nanosleep tracepoint program. */

WARNING: line length of 89 exceeds 80 columns
#87: FILE: tools/testing/selftests/bpf/prog_tests/send_signal.c:87:
+			ASSERT_OK(setpriority(PRIO_PROCESS, 0, old_prio), "setpriority");

WARNING: line length of 87 exceeds 80 columns
#116: FILE: tools/testing/selftests/bpf/prog_tests/send_signal.c:120:
+			pmu_fd = syscall(__NR_perf_event_open, attr, pid, -1 /* cpu */,

WARNING: line length of 92 exceeds 80 columns
#119: FILE: tools/testing/selftests/bpf/prog_tests/send_signal.c:123:
+			pmu_fd = syscall(__NR_perf_event_open, attr, getpid(), -1 /* cpu */,

WARNING: line length of 81 exceeds 80 columns
#162: FILE: tools/testing/selftests/bpf/prog_tests/send_signal.c:186:
+		ASSERT_OK(setpriority(PRIO_PROCESS, 0, old_prio), "setpriority");

total: 0 errors, 7 warnings, 0 checks, 234 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 60ea1e7adb5e ("selftests/bpf: Augment send_signal test with remote signaling") 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, 7 warnings, 0 checks, 234 lines checked