WARNING: line length of 89 exceeds 80 columns
#95: FILE: tools/lib/bpf/bpf_helpers.h:319:
+extern int bpf_stream_vprintk_impl(int stream_id, const char *fmt__str, const void *args,

CHECK: extern prototypes should be avoided in .h files
#95: FILE: tools/lib/bpf/bpf_helpers.h:319:
+extern int bpf_stream_vprintk_impl(int stream_id, const char *fmt__str, const void *args,

WARNING: line length of 97 exceeds 80 columns
#96: FILE: tools/lib/bpf/bpf_helpers.h:320:
+				   __u32 len__sz, struct bpf_prog_aux *aux__magic) __weak __ksym;

WARNING: line length of 86 exceeds 80 columns
#105: FILE: tools/lib/bpf/bpf_helpers.h:332:
+	bpf_stream_vprintk_impl(stream_id, ___fmt, ___param, sizeof(___param), NULL);\

total: 0 errors, 3 warnings, 1 checks, 84 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 f6e4375c0cf3 ("bpf: Re-define bpf_stream_vprintk as a magic kfunc") 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, 1 checks, 84 lines checked