On Tue, Jun 09, 2015 at 11:13:38AM +0800, Huang Rui wrote: > > MWAITX ECX[1]: enable timer if set > MWAITX EBX[31:0]: max wait time expressed in SW P0 clocks > > The software P0 frequency is the same as the TSC frequency. > > Max timeout = EBX/(TSC frequency)
^ that, would make a lovely comment for this v > +static inline void __mwaitx(unsigned long eax, unsigned long ebx, > + unsigned long ecx) > +{ > + /* "mwaitx %eax, %ebx, %ecx;" */ > + asm volatile(".byte 0x0f, 0x01, 0xfb;" > + :: "a" (eax), "b" (ebx), "c" (ecx)); > +} -- 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/