How many internal function calls are there? It seems we should try to avoid those as much as possible by suitable inlining.
On February 27, 2014 11:28:25 PM PST, Stefani Seibold <stef...@seibold.net> wrote: >Am Donnerstag, den 27.02.2014, 16:18 -0800 schrieb Andy Lutomirski: >> There's no reason for the vDSO to use a special function call ABI. >Use >> the platform defaults. >> > >The only reason was performance. What is good for the kernel should be >also good for the VDSO. Now all functions inside the VDSO will pass the >arguments by stack. > >> Signed-off-by: Andy Lutomirski <l...@amacapital.net> >> --- >> arch/x86/vdso/Makefile | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/arch/x86/vdso/Makefile b/arch/x86/vdso/Makefile >> index 92daaa6..80584f5 100644 >> --- a/arch/x86/vdso/Makefile >> +++ b/arch/x86/vdso/Makefile >> @@ -149,7 +149,7 @@ KBUILD_CFLAGS_32 := $(filter-out >-m64,$(KBUILD_CFLAGS)) >> KBUILD_CFLAGS_32 := $(filter-out >-mcmodel=kernel,$(KBUILD_CFLAGS_32)) >> KBUILD_CFLAGS_32 := $(filter-out -fno-pic,$(KBUILD_CFLAGS_32)) >> KBUILD_CFLAGS_32 := $(filter-out -mfentry,$(KBUILD_CFLAGS_32)) >> -KBUILD_CFLAGS_32 += -m32 -msoft-float -mregparm=3 >-freg-struct-return -fpic >> +KBUILD_CFLAGS_32 += -m32 -msoft-float -mregparm=0 -fpic >> $(vdso32-images:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_32) >> >> $(vdso32-images:%=$(obj)/%.dbg): $(obj)/vdso32-%.so.dbg: FORCE \ -- Sent from my mobile phone. Please pardon brevity and lack of formatting. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
