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Date: Wed, 29 Apr 2015 20:21:46 +0100
From: David Howells <dhowells@...hat.com>
To: linux-arch@...r.kernel.org
Cc: dhowells@...hat.com, linux-kernel@...r.kernel.org
Subject: [PATCH 02/13] Make bitmap functions that return boolean values
return a bool type
Make bitmap functions that return boolean values return a bool type. This
permits gcc to make better choices and produce fewer warnings.
Signed-off-by: David Howells <dhowells@...hat.com>
---
include/linux/bitmap.h | 30 +++++++++++++++---------------
lib/bitmap.c | 32 ++++++++++++++++----------------
2 files changed, 31 insertions(+), 31 deletions(-)
diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h
index ea17cca9e685..46c6cca6fcb4 100644
--- a/include/linux/bitmap.h
+++ b/include/linux/bitmap.h
@@ -87,9 +87,9 @@
* lib/bitmap.c provides these functions:
*/
-extern int __bitmap_empty(const unsigned long *bitmap, unsigned int nbits);
-extern int __bitmap_full(const unsigned long *bitmap, unsigned int nbits);
-extern int __bitmap_equal(const unsigned long *bitmap1,
+extern bool __bitmap_empty(const unsigned long *bitmap, unsigned int nbits);
+extern bool __bitmap_full(const unsigned long *bitmap, unsigned int nbits);
+extern bool __bitmap_equal(const unsigned long *bitmap1,
const unsigned long *bitmap2, unsigned int nbits);
extern void __bitmap_complement(unsigned long *dst, const unsigned long *src,
unsigned int nbits);
@@ -97,17 +97,17 @@ extern void __bitmap_shift_right(unsigned long *dst, const unsigned long *src,
unsigned int shift, unsigned int nbits);
extern void __bitmap_shift_left(unsigned long *dst, const unsigned long *src,
unsigned int shift, unsigned int nbits);
-extern int __bitmap_and(unsigned long *dst, const unsigned long *bitmap1,
- const unsigned long *bitmap2, unsigned int nbits);
+extern bool __bitmap_and(unsigned long *dst, const unsigned long *bitmap1,
+ const unsigned long *bitmap2, unsigned int nbits);
extern void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
const unsigned long *bitmap2, unsigned int nbits);
extern void __bitmap_xor(unsigned long *dst, const unsigned long *bitmap1,
const unsigned long *bitmap2, unsigned int nbits);
-extern int __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1,
+extern bool __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1,
const unsigned long *bitmap2, unsigned int nbits);
-extern int __bitmap_intersects(const unsigned long *bitmap1,
+extern bool __bitmap_intersects(const unsigned long *bitmap1,
const unsigned long *bitmap2, unsigned int nbits);
-extern int __bitmap_subset(const unsigned long *bitmap1,
+extern bool __bitmap_subset(const unsigned long *bitmap1,
const unsigned long *bitmap2, unsigned int nbits);
extern int __bitmap_weight(const unsigned long *bitmap, unsigned int nbits);
@@ -209,7 +209,7 @@ static inline void bitmap_copy(unsigned long *dst, const unsigned long *src,
}
}
-static inline int bitmap_and(unsigned long *dst, const unsigned long *src1,
+static inline bool bitmap_and(unsigned long *dst, const unsigned long *src1,
const unsigned long *src2, unsigned int nbits)
{
if (small_const_nbits(nbits))
@@ -235,7 +235,7 @@ static inline void bitmap_xor(unsigned long *dst, const unsigned long *src1,
__bitmap_xor(dst, src1, src2, nbits);
}
-static inline int bitmap_andnot(unsigned long *dst, const unsigned long *src1,
+static inline bool bitmap_andnot(unsigned long *dst, const unsigned long *src1,
const unsigned long *src2, unsigned int nbits)
{
if (small_const_nbits(nbits))
@@ -252,7 +252,7 @@ static inline void bitmap_complement(unsigned long *dst, const unsigned long *sr
__bitmap_complement(dst, src, nbits);
}
-static inline int bitmap_equal(const unsigned long *src1,
+static inline bool bitmap_equal(const unsigned long *src1,
const unsigned long *src2, unsigned int nbits)
{
if (small_const_nbits(nbits))
@@ -261,7 +261,7 @@ static inline int bitmap_equal(const unsigned long *src1,
return __bitmap_equal(src1, src2, nbits);
}
-static inline int bitmap_intersects(const unsigned long *src1,
+static inline bool bitmap_intersects(const unsigned long *src1,
const unsigned long *src2, unsigned int nbits)
{
if (small_const_nbits(nbits))
@@ -270,7 +270,7 @@ static inline int bitmap_intersects(const unsigned long *src1,
return __bitmap_intersects(src1, src2, nbits);
}
-static inline int bitmap_subset(const unsigned long *src1,
+static inline bool bitmap_subset(const unsigned long *src1,
const unsigned long *src2, unsigned int nbits)
{
if (small_const_nbits(nbits))
@@ -279,7 +279,7 @@ static inline int bitmap_subset(const unsigned long *src1,
return __bitmap_subset(src1, src2, nbits);
}
-static inline int bitmap_empty(const unsigned long *src, unsigned nbits)
+static inline bool bitmap_empty(const unsigned long *src, unsigned nbits)
{
if (small_const_nbits(nbits))
return ! (*src & BITMAP_LAST_WORD_MASK(nbits));
@@ -287,7 +287,7 @@ static inline int bitmap_empty(const unsigned long *src, unsigned nbits)
return find_first_bit(src, nbits) == nbits;
}
-static inline int bitmap_full(const unsigned long *src, unsigned int nbits)
+static inline bool bitmap_full(const unsigned long *src, unsigned int nbits)
{
if (small_const_nbits(nbits))
return ! (~(*src) & BITMAP_LAST_WORD_MASK(nbits));
diff --git a/lib/bitmap.c b/lib/bitmap.c
index 64c0926f5dd8..663a82df8f38 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -42,19 +42,19 @@
* for the best explanations of this ordering.
*/
-int __bitmap_equal(const unsigned long *bitmap1,
+bool __bitmap_equal(const unsigned long *bitmap1,
const unsigned long *bitmap2, unsigned int bits)
{
unsigned int k, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; ++k)
if (bitmap1[k] != bitmap2[k])
- return 0;
+ return false;
if (bits % BITS_PER_LONG)
if ((bitmap1[k] ^ bitmap2[k]) & BITMAP_LAST_WORD_MASK(bits))
- return 0;
+ return false;
- return 1;
+ return true;
}
EXPORT_SYMBOL(__bitmap_equal);
@@ -150,7 +150,7 @@ void __bitmap_shift_left(unsigned long *dst, const unsigned long *src,
}
EXPORT_SYMBOL(__bitmap_shift_left);
-int __bitmap_and(unsigned long *dst, const unsigned long *bitmap1,
+bool __bitmap_and(unsigned long *dst, const unsigned long *bitmap1,
const unsigned long *bitmap2, unsigned int bits)
{
unsigned int k;
@@ -188,7 +188,7 @@ void __bitmap_xor(unsigned long *dst, const unsigned long *bitmap1,
}
EXPORT_SYMBOL(__bitmap_xor);
-int __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1,
+bool __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1,
const unsigned long *bitmap2, unsigned int bits)
{
unsigned int k;
@@ -204,33 +204,33 @@ int __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1,
}
EXPORT_SYMBOL(__bitmap_andnot);
-int __bitmap_intersects(const unsigned long *bitmap1,
- const unsigned long *bitmap2, unsigned int bits)
+bool __bitmap_intersects(const unsigned long *bitmap1,
+ const unsigned long *bitmap2, unsigned int bits)
{
unsigned int k, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; ++k)
if (bitmap1[k] & bitmap2[k])
- return 1;
+ return true;
if (bits % BITS_PER_LONG)
if ((bitmap1[k] & bitmap2[k]) & BITMAP_LAST_WORD_MASK(bits))
- return 1;
- return 0;
+ return true;
+ return false;
}
EXPORT_SYMBOL(__bitmap_intersects);
-int __bitmap_subset(const unsigned long *bitmap1,
- const unsigned long *bitmap2, unsigned int bits)
+bool __bitmap_subset(const unsigned long *bitmap1,
+ const unsigned long *bitmap2, unsigned int bits)
{
unsigned int k, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; ++k)
if (bitmap1[k] & ~bitmap2[k])
- return 0;
+ return false;
if (bits % BITS_PER_LONG)
if ((bitmap1[k] & ~bitmap2[k]) & BITMAP_LAST_WORD_MASK(bits))
- return 0;
- return 1;
+ return false;
+ return true;
}
EXPORT_SYMBOL(__bitmap_subset);
--
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