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| author | Adrian Bunk <bunk@stusta.de> | 2007-02-20 01:07:13 +0100 |
|---|---|---|
| committer | Dave Jones <davej@redhat.com> | 2007-02-20 14:29:37 -0500 |
| commit | b44755cfaa72e7ed3d831a946bb4e7dfe7548966 (patch) | |
| tree | 251cf0ab5aa9c39bab3f0981ab96021b5523bee3 | |
| parent | 48ac3271e52d23ee987da93f80d20f6bec8e6717 (diff) | |
| download | linux-b44755cfaa72e7ed3d831a946bb4e7dfe7548966.tar.gz linux-b44755cfaa72e7ed3d831a946bb4e7dfe7548966.tar.bz2 linux-b44755cfaa72e7ed3d831a946bb4e7dfe7548966.zip | |
{rd,wr}msr_on_cpu SMP=n optimization
Let's save a few bytes in the CONFIG_SMP=n case.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Dave Jones <davej@redhat.com>
| -rw-r--r-- | arch/i386/lib/Makefile | 2 | ||||
| -rw-r--r-- | arch/i386/lib/msr-on-cpu.c | 12 | ||||
| -rw-r--r-- | arch/x86_64/lib/Makefile | 3 | ||||
| -rw-r--r-- | include/asm-i386/msr.h | 11 | ||||
| -rw-r--r-- | include/asm-x86_64/msr.h | 11 |
5 files changed, 25 insertions, 14 deletions
diff --git a/arch/i386/lib/Makefile b/arch/i386/lib/Makefile index 0d41223472c2..22d8ac5815f0 100644 --- a/arch/i386/lib/Makefile +++ b/arch/i386/lib/Makefile @@ -8,4 +8,4 @@ lib-y = checksum.o delay.o usercopy.o getuser.o putuser.o memcpy.o strstr.o \ lib-$(CONFIG_X86_USE_3DNOW) += mmx.o -obj-y = msr-on-cpu.o +obj-$(CONFIG_SMP) += msr-on-cpu.o diff --git a/arch/i386/lib/msr-on-cpu.c b/arch/i386/lib/msr-on-cpu.c index 2092ea15ba85..1c46bda409ff 100644 --- a/arch/i386/lib/msr-on-cpu.c +++ b/arch/i386/lib/msr-on-cpu.c @@ -3,7 +3,6 @@ #include <linux/smp.h> #include <asm/msr.h> -#ifdef CONFIG_SMP struct msr_info { u32 msr_no; u32 l, h; @@ -54,17 +53,6 @@ void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h) } preempt_enable(); } -#else -void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h) -{ - rdmsr(msr_no, *l, *h); -} - -void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h) -{ - wrmsr(msr_no, l, h); -} -#endif EXPORT_SYMBOL(rdmsr_on_cpu); EXPORT_SYMBOL(wrmsr_on_cpu); diff --git a/arch/x86_64/lib/Makefile b/arch/x86_64/lib/Makefile index 0a43f07b0290..43d051ff1fb4 100644 --- a/arch/x86_64/lib/Makefile +++ b/arch/x86_64/lib/Makefile @@ -4,7 +4,8 @@ CFLAGS_csum-partial.o := -funroll-loops -obj-y := io.o iomap_copy.o msr-on-cpu.o +obj-y := io.o iomap_copy.o +obj-$(CONFIG_SMP) += msr-on-cpu.o lib-y := csum-partial.o csum-copy.o csum-wrappers.o delay.o \ usercopy.o getuser.o putuser.o \ diff --git a/include/asm-i386/msr.h b/include/asm-i386/msr.h index 3516a1fb38e0..8c35f3d90a89 100644 --- a/include/asm-i386/msr.h +++ b/include/asm-i386/msr.h @@ -83,8 +83,19 @@ static inline void wrmsrl (unsigned long msr, unsigned long long val) : "c" (counter)) #endif /* !CONFIG_PARAVIRT */ +#ifdef CONFIG_SMP void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h); void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h); +#else /* CONFIG_SMP */ +static inline void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h) +{ + rdmsr(msr_no, *l, *h); +} +static inline void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h) +{ + wrmsr(msr_no, l, h); +} +#endif /* CONFIG_SMP */ /* symbolic names for some interesting MSRs */ /* Intel defined MSRs. */ diff --git a/include/asm-x86_64/msr.h b/include/asm-x86_64/msr.h index 995a2b5fb26b..902f9a58617e 100644 --- a/include/asm-x86_64/msr.h +++ b/include/asm-x86_64/msr.h @@ -160,8 +160,19 @@ static inline unsigned int cpuid_edx(unsigned int op) #define MSR_IA32_UCODE_WRITE 0x79 #define MSR_IA32_UCODE_REV 0x8b +#ifdef CONFIG_SMP void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h); void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h); +#else /* CONFIG_SMP */ +static inline void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h) +{ + rdmsr(msr_no, *l, *h); +} +static inline void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h) +{ + wrmsr(msr_no, l, h); +} +#endif /* CONFIG_SMP */ #endif |