WARNING: line length of 81 exceeds 80 columns
#121: FILE: kernel/bpf/verifier.c:6794:
+			verbose(env, "total call depth is %d frames, too deep\n",

WARNING: Prefer noinline over __attribute__((noinline))
#167: FILE: tools/testing/selftests/bpf/progs/test_global_func3.c:56:
+__attribute__ ((noinline))

WARNING: Prefer noinline over __attribute__((noinline))
#173: FILE: tools/testing/selftests/bpf/progs/test_global_func3.c:62:
+__attribute__ ((noinline))

WARNING: Prefer noinline over __attribute__((noinline))
#179: FILE: tools/testing/selftests/bpf/progs/test_global_func3.c:68:
+__attribute__ ((noinline))

WARNING: Prefer noinline over __attribute__((noinline))
#185: FILE: tools/testing/selftests/bpf/progs/test_global_func3.c:74:
+__attribute__ ((noinline))

WARNING: Prefer noinline over __attribute__((noinline))
#191: FILE: tools/testing/selftests/bpf/progs/test_global_func3.c:80:
+__attribute__ ((noinline))

WARNING: Prefer noinline over __attribute__((noinline))
#197: FILE: tools/testing/selftests/bpf/progs/test_global_func3.c:86:
+__attribute__ ((noinline))

WARNING: Prefer noinline over __attribute__((noinline))
#203: FILE: tools/testing/selftests/bpf/progs/test_global_func3.c:92:
+__attribute__ ((noinline))

WARNING: Prefer noinline over __attribute__((noinline))
#209: FILE: tools/testing/selftests/bpf/progs/test_global_func3.c:98:
+__attribute__ ((noinline))

total: 0 errors, 9 warnings, 0 checks, 160 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 f8744e3c8507 ("bpf: Bump maximum runtime call stack depth to 16") 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, 9 warnings, 0 checks, 160 lines checked