On Fri, 2014-11-14 at 00:17 +0000, Russell King - ARM Linux wrote: > On Thu, Nov 13, 2014 at 04:05:30PM -0800, Joe Perches wrote: > > On Thu, 2014-11-13 at 23:53 +0000, Russell King - ARM Linux wrote: > > > On Fri, Oct 31, 2014 at 01:42:44PM +0800, Wang, Yalin wrote: > > > > This patch add bitrev.h file to support rbit instruction, > > > > so that we can do bitrev operation by hardware. > > > > Signed-off-by: Yalin Wang <yalin.wang@xxxxxxxxxxxxxx> > > > > --- > > > > arch/arm/Kconfig | 1 + > > > > arch/arm/include/asm/bitrev.h | 21 +++++++++++++++++++++ > > > > 2 files changed, 22 insertions(+) > > > > create mode 100644 arch/arm/include/asm/bitrev.h > > > > > > > > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig > > > > index 89c4b5c..be92b3b 100644 > > > > --- a/arch/arm/Kconfig > > > > +++ b/arch/arm/Kconfig > > > > @@ -28,6 +28,7 @@ config ARM > > > > select HANDLE_DOMAIN_IRQ > > > > select HARDIRQS_SW_RESEND > > > > select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT) > > > > + select HAVE_ARCH_BITREVERSE if (CPU_V7M || CPU_V7) > > > > > > Looking at this, this is just wrong. Take a moment to consider what > > > happens if we build a kernel which supports both ARMv6 _and_ ARMv7 CPUs. > > > What happens if an ARMv6 CPU tries to execute an rbit instruction? > > > > > > Second point (which isn't obvious from your submissions on-list) is that > > > you've loaded the patch system up with patches for other parts of the > > > kernel tree for which I am not responsible for. As such, I can't take > > > those patches without the sub-tree maintainer acking them. Also, the > > > commit text in those patches look weird: > > > > > > 6fire: Convert byte_rev_table uses to bitrev8 > > > > > > Use the inline function instead of directly indexing the array. > > > > > > This allows some architectures with hardware instructions for bit > > > reversals to eliminate the array. > > > > > > Signed-off-by: Joe Perches <(address hidden)> > > > Signed-off-by: Yalin Wang <(address hidden)> > > > > > > Why is Joe signing off on these patches? > > > Shouldn't his entry be an Acked-by: ? > > > > I didn't sign off on or ack the "add bitrev.h" patch. > > Correct, I never said you did. Please read my message a bit more carefully > next time, huh? You've no reason to write that Russell. I'm not trying to be anything other than clear and no I didn't say you said that either. Why not make your own writing clearer or your own memory sharper then eh? Reply on the patch I actually wrote. You were cc'd on it when I submitted it. > > I created 2 patches that converted direct uses of byte_rev_table > > to that bitrev8 static inline. One of them is already in -next > > > > 7a1283d8f5298437a454ec477384dcd9f9f88bac carl9170: Convert byte_rev_table uses to bitrev8 > > > > The other hasn't been applied. > > > > https://lkml.org/lkml/2014/10/28/1056 > > > > Maybe Takashi Iwai will get around to it one day. > > Great, so I can just discard these that were incorrectly submitted to me > then. I think you shouldn't apply these patches or updated ones either until all the current uses are converted. cheers, Joe -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>