Re: [PATCH] compiler: allow all arches to enable CONFIG_OPTIMIZE_INLINING

[Arnd Bergmann]

On Wed, Mar 20, 2019 at 7:41 AM Masahiro Yamada
<yamada.masahiro@xxxxxxxxxxxxx> wrote:

> It is unclear to me how to fix it.
> That's why I ended up with "depends on !MIPS".
>
>
>   MODPOST vmlinux.o
> 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'
>
>
> Perhaps, MIPS folks may know how to fix it.

I would guess like this:

diff --git a/arch/mips/include/asm/mips-cm.h b/arch/mips/include/asm/mips-cm.h
index 8bc5df49b0e1..a27483fedb7d 100644
--- a/arch/mips/include/asm/mips-cm.h
+++ b/arch/mips/include/asm/mips-cm.h
@@ -79,7 +79,7 @@ static inline int mips_cm_probe(void)
  *
  * Returns true if a CM is present in the system, else false.
  */
-static inline bool mips_cm_present(void)
+static __always_inline bool mips_cm_present(void)
 {
 #ifdef CONFIG_MIPS_CM
        return mips_gcr_base != NULL;
@@ -93,7 +93,7 @@ static inline bool mips_cm_present(void)
  *
  * Returns true if the system implements an L2-only sync region, else false.
  */
-static inline bool mips_cm_has_l2sync(void)
+static __always_inline bool mips_cm_has_l2sync(void)
 {
 #ifdef CONFIG_MIPS_CM
        return mips_cm_l2sync_base != NULL;