On Tue, Sep 22, 2015 at 06:50:29PM +0200, Christophe Leroy wrote: > We are spending between 40 and 160 cycles with a mean of 65 cycles in > the TLB handling routines (measured with mftbl) so make it more > simple althought it adds one instruction. > > Signed-off-by: Christophe Leroy <[email protected]>
Does this just make it simpler or does it make it faster? What is the performance impact? Is the performance impact seen with or without CONFIG_8xx_CPU6 enabled? Without it, it looks like you're adding an mtspr/mfspr combo in order to replace one mfspr. -Scott -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
