WARNING: line length of 85 exceeds 80 columns #28: FILE: include/linux/perf_event.h:1722: +get_perf_callchain(struct pt_regs *regs, struct perf_callchain_entry *external_entry, WARNING: line length of 89 exceeds 80 columns #29: FILE: include/linux/perf_event.h:1723: + bool kernel, bool user, u32 max_stack, bool crosstask, bool add_mark); WARNING: line length of 85 exceeds 80 columns #65: FILE: kernel/events/callchain.c:220: +get_perf_callchain(struct pt_regs *regs, struct perf_callchain_entry *external_entry, WARNING: line length of 88 exceeds 80 columns #66: FILE: kernel/events/callchain.c:221: + bool kernel, bool user, u32 max_stack, bool crosstask, bool add_mark) total: 0 errors, 4 warnings, 0 checks, 65 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 7324fc872072 ("perf: Use extern perf_callchain_entry for get_perf_callchain") 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, 4 warnings, 0 checks, 65 lines checked