CHECK: extern prototypes should be avoided in .h files #24: FILE: include/linux/perf_event.h:1255: +extern void perf_event_aux_pause(struct perf_event *event, bool pause); total: 0 errors, 0 warnings, 1 checks, 15 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 1b14cc5e8a3f ("perf/core: Make perf_event_aux_pause() as external function") 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, 0 warnings, 1 checks, 15 lines checked