The patch titled Subject: MIPS: mark __fls() and __ffs() as __always_inline has been added to the -mm tree. Its filename is mips-mark-__fls-and-__ffs-as-__always_inline.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/mips-mark-__fls-and-__ffs-as-__always_inline.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/mips-mark-__fls-and-__ffs-as-__always_inline.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: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx> Subject: MIPS: mark __fls() and __ffs() as __always_inline This prepares to move CONFIG_OPTIMIZE_INLINING from x86 to a common place. We need to eliminate potential issues beforehand. If it is enabled for mips, the following errors are reported: arch/mips/mm/sc-mips.o: In function `mips_sc_prefetch_enable.part.2': sc-mips.c:(.text+0x98): undefined reference to `mips_gcr_base' sc-mips.c:(.text+0x9c): undefined reference to `mips_gcr_base' sc-mips.c:(.text+0xbc): undefined reference to `mips_gcr_base' sc-mips.c:(.text+0xc8): undefined reference to `mips_gcr_base' sc-mips.c:(.text+0xdc): undefined reference to `mips_gcr_base' arch/mips/mm/sc-mips.o:sc-mips.c:(.text.unlikely+0x44): more undefined references to `mips_gcr_base' Link: http://lkml.kernel.org/r/20190423034959.13525-7-yamada.masahiro@xxxxxxxxxxxxx Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/mips/include/asm/bitops.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/arch/mips/include/asm/bitops.h~mips-mark-__fls-and-__ffs-as-__always_inline +++ a/arch/mips/include/asm/bitops.h @@ -482,7 +482,7 @@ static inline void __clear_bit_unlock(un * Return the bit position (0..63) of the most significant 1 bit in a word * Returns -1 if no 1 bit exists */ -static inline unsigned long __fls(unsigned long word) +static __always_inline unsigned long __fls(unsigned long word) { int num; @@ -548,7 +548,7 @@ static inline unsigned long __fls(unsign * Returns 0..SZLONG-1 * Undefined if no bit exists, so code should check against 0 first. */ -static inline unsigned long __ffs(unsigned long word) +static __always_inline unsigned long __ffs(unsigned long word) { return __fls(word & -word); } _ Patches currently in -mm which might be from yamada.masahiro@xxxxxxxxxxxxx are remove-spdx-with-linux-syscall-note-from-kernel-space-headers.patch arm64-mark-__cpus_have_const_cap-as-__always_inline.patch mips-mark-mult_sh_align_mod-as-__always_inline.patch s390-cpacf-mark-scpacf_query-as-__always_inline.patch mtd-rawnand-vf610_nfc-add-initializer-to-avoid-wmaybe-uninitialized.patch mips-mark-__fls-and-__ffs-as-__always_inline.patch arm-mark-setup_machine_tags-stub-as-__init-__noreturn.patch powerpc-prom_init-mark-prom_getprop-and-prom_getproplen-as-__init.patch powerpc-mm-radix-mark-__radix__flush_tlb_range_psize-as-__always_inline.patch powerpc-mm-radix-mark-as-__tlbie_pid-and-friends-as__always_inline.patch compiler-allow-all-arches-to-enable-config_optimize_inlining.patch treewide-replace-include-asm-sizesh-with-include-linux-sizesh.patch arch-remove-asm-sizesh-amd-asm-generic-sizesh.patch