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 <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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)

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);