The patch titled Subject: gcov: fix when CONFIG_MODULES is not set has been added to the -mm tree. Its filename is gcov-clang-support-fix.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/gcov-clang-support-fix.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/gcov-clang-support-fix.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Tri Vo <trong@xxxxxxxxxxx> Subject: gcov: fix when CONFIG_MODULES is not set kernel/gcov/gcc_4_7.c: In function 'gcov_info_within_module': > > kernel/gcov/gcc_4_7.c:162:9: error: implicit declaration of function \ > > 'within_module'; did you mean 'init_module'? \ > > [-Werror=implicit-function-declaration] return within_module((unsigned long)info, mod); ^~~~~~~~~~~~~ init_module Link: http://lkml.kernel.org/r/20190402030956.48166-1-trong@xxxxxxxxxxx Link: https://marc.info/?l=linux-mm&m=155384681109231&w=2 Fixes: 8c3d220cb6b5 ("gcov: clang support") Signed-off-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> Signed-off-by: Tri Vo <trong@xxxxxxxxxxx> Reported-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Reported-by: kbuild test robot <lkp@xxxxxxxxx> Cc: Greg Hackmann <ghackmann@xxxxxxxxxxx> Cc: Peter Oberparleiter <oberpar@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- kernel/gcov/clang.c | 4 ++++ kernel/gcov/gcc_3_4.c | 4 ++++ kernel/gcov/gcc_4_7.c | 4 ++++ 3 files changed, 12 insertions(+) --- a/kernel/gcov/clang.c~gcov-clang-support-fix +++ a/kernel/gcov/clang.c @@ -223,7 +223,11 @@ void gcov_info_unlink(struct gcov_info * */ bool gcov_info_within_module(struct gcov_info *info, struct module *mod) { +#ifdef CONFIG_MODULES return within_module((unsigned long)info->filename, mod); +#else + return false; +#endif } /* Symbolic links to be created for each profiling data file. */ --- a/kernel/gcov/gcc_3_4.c~gcov-clang-support-fix +++ a/kernel/gcov/gcc_3_4.c @@ -146,7 +146,11 @@ void gcov_info_unlink(struct gcov_info * */ bool gcov_info_within_module(struct gcov_info *info, struct module *mod) { +#ifdef CONFIG_MODULES return within_module((unsigned long)info, mod); +#else + return false; +#endif } /* Symbolic links to be created for each profiling data file. */ --- a/kernel/gcov/gcc_4_7.c~gcov-clang-support-fix +++ a/kernel/gcov/gcc_4_7.c @@ -159,7 +159,11 @@ void gcov_info_unlink(struct gcov_info * */ bool gcov_info_within_module(struct gcov_info *info, struct module *mod) { +#ifdef CONFIG_MODULES return within_module((unsigned long)info, mod); +#else + return false; +#endif } /* Symbolic links to be created for each profiling data file. */ _ Patches currently in -mm which might be from trong@xxxxxxxxxxx are gcov-clang-support-fix.patch gcov-docs-add-a-note-on-gcc-vs-clang-differences.patch