WARNING: line length of 87 exceeds 80 columns #76: FILE: kernel/trace/fgraph.c:842: + static_call(fgraph_retfunc)(&trace, fgraph_direct_gops, fregs); WARNING: externs should be avoided in .c files #94: FILE: kernel/trace/fgraph.c:1024: +void ftrace_stub_graph(struct ftrace_graph_ret *trace, struct fgraph_ops *gops, total: 0 errors, 2 warnings, 0 checks, 131 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 200287bdfbb0 ("fgraph: Pass ftrace_regs to retfunc") 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, 2 warnings, 0 checks, 131 lines checked