From: Glauber de Oliveira Costa Date: Wed, 30 Jan 2008 12:31:07 +0000 (+0100) Subject: x86: change rdpmc interface X-Git-Tag: v3.12-rc1~24034^2~645 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b8d1fae7dbde6a1227fa142acecb48dc3dd63817;p=kernel%2Fkernel-generic.git x86: change rdpmc interface the rdpmc instruction gets a counter argument in rcx. However, the i386 version was ignoring it. To make both x86_64 and i386 versions the same, as well as to comply with the instruction semantics, this parameter is added in the i386 version Signed-off-by: Glauber de Oliveira Costa Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- diff --git a/include/asm-x86/msr.h b/include/asm-x86/msr.h index b6262e9..effb731 100644 --- a/include/asm-x86/msr.h +++ b/include/asm-x86/msr.h @@ -94,10 +94,10 @@ static inline unsigned long long native_read_tsc(void) return val; } -static inline unsigned long long native_read_pmc(void) +static inline unsigned long long native_read_pmc(int counter) { unsigned long long val; - asm volatile("rdpmc" : "=A" (val)); + asm volatile("rdpmc" : "=A" (val) : "c" (counter)); return val; } @@ -154,7 +154,7 @@ static inline int wrmsr_safe(u32 __msr, u32 __low, u32 __high) #define rdpmc(counter,low,high) \ do { \ - u64 _l = native_read_pmc(); \ + u64 _l = native_read_pmc(counter); \ (low) = (u32)_l; \ (high) = (u32)(_l >> 32); \ } while(0) diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h index d1780e3..4782be6 100644 --- a/include/asm-x86/paravirt.h +++ b/include/asm-x86/paravirt.h @@ -118,7 +118,7 @@ struct pv_cpu_ops { int (*write_msr)(unsigned int msr, u64 val); u64 (*read_tsc)(void); - u64 (*read_pmc)(void); + u64 (*read_pmc)(int counter); /* These two are jmp to, not actually called. */ void (*irq_enable_syscall_ret)(void);