Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / tile / include / asm / bitops.h

diff --git a/kernel/arch/tile/include/asm/bitops.h b/kernel/arch/tile/include/asm/bitops.h
new file mode 100644 (file)
index 0000000..20caa34
--- /dev/null
+++ b/kernel/arch/tile/include/asm/bitops.h
@@ -0,0 +1,94 @@
+/*
+ * Copyright 1992, Linus Torvalds.
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _ASM_TILE_BITOPS_H
+#define _ASM_TILE_BITOPS_H
+
+#include <linux/types.h>
+#include <asm/barrier.h>
+
+#ifndef _LINUX_BITOPS_H
+#error only <linux/bitops.h> can be included directly
+#endif
+
+#ifdef __tilegx__
+#include <asm/bitops_64.h>
+#else
+#include <asm/bitops_32.h>
+#endif
+
+/**
+ * ffz - find first zero bit in word
+ * @word: The word to search
+ *
+ * Undefined if no zero exists, so code should check against ~0UL first.
+ */
+static inline unsigned long ffz(unsigned long word)
+{
+       return __builtin_ctzl(~word);
+}
+
+static inline int fls64(__u64 w)
+{
+       return (sizeof(__u64) * 8) - __builtin_clzll(w);
+}
+
+/**
+ * fls - find last set bit in word
+ * @x: the word to search
+ *
+ * This is defined in a similar way as the libc and compiler builtin
+ * ffs, but returns the position of the most significant set bit.
+ *
+ * fls(value) returns 0 if value is 0 or the position of the last
+ * set bit if value is nonzero. The last (most significant) bit is
+ * at position 32.
+ */
+static inline int fls(int x)
+{
+       return fls64((unsigned int) x);
+}
+
+static inline unsigned int __arch_hweight32(unsigned int w)
+{
+       return __builtin_popcount(w);
+}
+
+static inline unsigned int __arch_hweight16(unsigned int w)
+{
+       return __builtin_popcount(w & 0xffff);
+}
+
+static inline unsigned int __arch_hweight8(unsigned int w)
+{
+       return __builtin_popcount(w & 0xff);
+}
+
+static inline unsigned long __arch_hweight64(__u64 w)
+{
+       return __builtin_popcountll(w);
+}
+
+#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/lock.h>
+#include <asm-generic/bitops/find.h>
+#include <asm-generic/bitops/sched.h>
+#include <asm-generic/bitops/non-atomic.h>
+#include <asm-generic/bitops/le.h>
+
+#endif /* _ASM_TILE_BITOPS_H */