Messages in this thread | | | Subject | Re: [PATCH 10/10] powerpc: select DYNAMIC_DEBUG_RELATIVE_POINTERS for PPC64 | From | Christophe Leroy <> | Date | Tue, 23 Apr 2019 17:37:33 +0200 |
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Le 09/04/2019 à 23:25, Rasmus Villemoes a écrit : > Similar to GENERIC_BUG_RELATIVE_POINTERS, one can now relativize the > four const char* members of struct _ddebug, thus saving 16 bytes per > instance (one for each pr_debug(), dev_debug() etc. in a > CONFIG_DYNAMIC_DEBUG kernel). The asm-generic implementation seems to > work out-of-the-box, though this is only compile-tested. > > Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> > --- > arch/powerpc/Kconfig | 1 + > arch/powerpc/include/asm/Kbuild | 1 + > 2 files changed, 2 insertions(+) > > diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig > index 2d0be82c3061..6821c8ae1d62 100644 > --- a/arch/powerpc/Kconfig > +++ b/arch/powerpc/Kconfig > @@ -155,6 +155,7 @@ config PPC > select BUILDTIME_EXTABLE_SORT > select CLONE_BACKWARDS > select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN > + select DYNAMIC_DEBUG_RELATIVE_POINTERS if PPC64
Why only PPC64 ? Won't it work with PPC32 ? Or would it be counter-performant on 32 bits ?
Christophe
> select DYNAMIC_FTRACE if FUNCTION_TRACER > select EDAC_ATOMIC_SCRUB > select EDAC_SUPPORT > diff --git a/arch/powerpc/include/asm/Kbuild b/arch/powerpc/include/asm/Kbuild > index a0c132bedfae..f332e202192a 100644 > --- a/arch/powerpc/include/asm/Kbuild > +++ b/arch/powerpc/include/asm/Kbuild > @@ -3,6 +3,7 @@ generated-y += syscall_table_64.h > generated-y += syscall_table_c32.h > generated-y += syscall_table_spu.h > generic-y += div64.h > +generic-y += dynamic_debug.h > generic-y += export.h > generic-y += irq_regs.h > generic-y += local64.h >
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