On Fri, Oct 31, 2014 at 05:41:48AM +0000, Wang, Yalin wrote:
quoted hunk
This patch add bitrev.h file to support rbit instruction,
so that we can do bitrev operation by hardware.
Signed-off-by: Yalin Wang <redacted>
---
arch/arm64/Kconfig | 1 +
arch/arm64/include/asm/bitrev.h | 21 +++++++++++++++++++++
2 files changed, 22 insertions(+)
create mode 100644 arch/arm64/include/asm/bitrev.h
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 9532f8d..b1ec1dd 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -35,6 +35,7 @@ config ARM64
select HANDLE_DOMAIN_IRQ
select HARDIRQS_SW_RESEND
select HAVE_ARCH_AUDITSYSCALL
+ select HAVE_ARCH_BITREVERSE
select HAVE_ARCH_JUMP_LABEL
select HAVE_ARCH_KGDB
select HAVE_ARCH_TRACEHOOK
diff --git a/arch/arm64/include/asm/bitrev.h b/arch/arm64/include/asm/bitrev.h
new file mode 100644
index 0000000..706a209
--- /dev/null
+++ b/arch/arm64/include/asm/bitrev.h
@@ -0,0 +1,21 @@
+#ifndef __ASM_ARM64_BITREV_H
+#define __ASM_ARM64_BITREV_H
Really minor nit, but we don't tend to include 'ARM64' in our header guards,
so this should just be __ASM_BITREV_H.
With that change,
Acked-by: Will Deacon [off-list ref]
Will