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Message-ID: <56F77959.1010609@gmail.com>
Date: Sun, 27 Mar 2016 14:10:33 +0800
From: "zhaoxiu.zeng" <zhaoxiu.zeng@...il.com>
To: Chris Metcalf <cmetcalf@...hip.com>
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH 08/31] Add tile-specific parity functions
From: Zeng Zhaoxiu <zhaoxiu.zeng@...il.com>
Signed-off-by: Zeng Zhaoxiu <zhaoxiu.zeng@...il.com>
---
arch/tile/include/asm/bitops.h | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/arch/tile/include/asm/bitops.h b/arch/tile/include/asm/bitops.h
index 20caa34..370d007 100644
--- a/arch/tile/include/asm/bitops.h
+++ b/arch/tile/include/asm/bitops.h
@@ -81,10 +81,36 @@ static inline unsigned long __arch_hweight64(__u64 w)
return __builtin_popcountll(w);
}
+static inline unsigned int __arch_parity32(unsigned int w)
+{
+ return __builtin_popcount(w) & 1;
+}
+
+static inline unsigned int __arch_parity16(unsigned int w)
+{
+ return __arch_parity32(w & 0xffff);
+}
+
+static inline unsigned int __arch_parity8(unsigned int w)
+{
+ return __arch_parity32(w & 0xff);
+}
+
+static inline unsigned int __arch_parity4(unsigned int w)
+{
+ return __arch_parity32(w & 0xf);
+}
+
+static inline unsigned int __arch_parity64(__u64 w)
+{
+ return (unsigned int)__builtin_popcountll(w) & 1;
+}
+
#include <asm-generic/bitops/builtin-__ffs.h>
#include <asm-generic/bitops/builtin-__fls.h>
#include <asm-generic/bitops/builtin-ffs.h>
#include <asm-generic/bitops/const_hweight.h>
+#include <asm-generic/bitops/const_parity.h>
#include <asm-generic/bitops/lock.h>
#include <asm-generic/bitops/find.h>
#include <asm-generic/bitops/sched.h>
--
2.5.5
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