On Sat, Sep 15, 2012 at 04:35:02PM +0100, Christoffer Dall wrote: > From: Rusty Russell <rusty.russ...@linaro.org> > > We want some of these for use in KVM, so pull them out of > arch/arm/kernel/perf_event_v7.c into their own asm/perf_bits.h. > > Signed-off-by: Rusty Russell <rusty.russ...@linaro.org> > Signed-off-by: Christoffer Dall <c.d...@virtualopensystems.com> > --- > arch/arm/include/asm/perf_bits.h | 56 > ++++++++++++++++++++++++++++++++++++++ > arch/arm/kernel/perf_event_v7.c | 51 +---------------------------------- > 2 files changed, 57 insertions(+), 50 deletions(-) > create mode 100644 arch/arm/include/asm/perf_bits.h
I don't like this I'm afraid. These bit definitions, although useful for kvm, are only applicable to ARMv7 PMUs. Perf does a reasonable job of separating the low-level CPU-specific code and adding the v7 definitions into their own global header feels like a step backwards. I also want to move a load of this into drivers/ at some point and this won't help with that effort. Is KVM just using this for world switch? If so, why does it care about the bit definitions (and what do you do for things like debug regs)? Is there anything I could add to perf that you could call instead? Will -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
