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authorJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2010-11-16 22:06:22 +0300
committerJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2010-11-16 22:06:22 +0300
commit20b4755e4fbb226eb42951bd40b53fcbce9ef944 (patch)
tree43da70e0b32ee423d3643ecd422821383411ab72 /include/asm-generic/bitops/find.h
parent744f9f104ea262de1dc3e29265870c649f0d9473 (diff)
parente53beacd23d9cb47590da6a7a7f6d417b941a994 (diff)
downloadlinux-20b4755e4fbb226eb42951bd40b53fcbce9ef944.tar.xz
Merge commit 'v2.6.37-rc2' into upstream/xenfs
* commit 'v2.6.37-rc2': (10093 commits) Linux 2.6.37-rc2 capabilities/syslog: open code cap_syslog logic to fix build failure i2c: Sanity checks on adapter registration i2c: Mark i2c_adapter.id as deprecated i2c: Drivers shouldn't include <linux/i2c-id.h> i2c: Delete unused adapter IDs i2c: Remove obsolete cleanup for clientdata include/linux/kernel.h: Move logging bits to include/linux/printk.h Fix gcc 4.5.1 miscompiling drivers/char/i8k.c (again) hwmon: (w83795) Check for BEEP pin availability hwmon: (w83795) Clear intrusion alarm immediately hwmon: (w83795) Read the intrusion state properly hwmon: (w83795) Print the actual temperature channels as sources hwmon: (w83795) List all usable temperature sources hwmon: (w83795) Expose fan control method hwmon: (w83795) Fix fan control mode attributes hwmon: (lm95241) Check validity of input values hwmon: Change mail address of Hans J. Koch PCI: sysfs: fix printk warnings GFS2: Fix inode deallocation race ...
Diffstat (limited to 'include/asm-generic/bitops/find.h')
-rw-r--r--include/asm-generic/bitops/find.h39
1 files changed, 37 insertions, 2 deletions
diff --git a/include/asm-generic/bitops/find.h b/include/asm-generic/bitops/find.h
index 1914e9742512..110fa700f853 100644
--- a/include/asm-generic/bitops/find.h
+++ b/include/asm-generic/bitops/find.h
@@ -1,15 +1,50 @@
#ifndef _ASM_GENERIC_BITOPS_FIND_H_
#define _ASM_GENERIC_BITOPS_FIND_H_
-#ifndef CONFIG_GENERIC_FIND_NEXT_BIT
+/**
+ * find_next_bit - find the next set bit in a memory region
+ * @addr: The address to base the search on
+ * @offset: The bitnumber to start searching at
+ * @size: The bitmap size in bits
+ */
extern unsigned long find_next_bit(const unsigned long *addr, unsigned long
size, unsigned long offset);
+/**
+ * find_next_zero_bit - find the next cleared bit in a memory region
+ * @addr: The address to base the search on
+ * @offset: The bitnumber to start searching at
+ * @size: The bitmap size in bits
+ */
extern unsigned long find_next_zero_bit(const unsigned long *addr, unsigned
long size, unsigned long offset);
-#endif
+
+#ifdef CONFIG_GENERIC_FIND_FIRST_BIT
+
+/**
+ * find_first_bit - find the first set bit in a memory region
+ * @addr: The address to start the search at
+ * @size: The maximum size to search
+ *
+ * Returns the bit number of the first set bit.
+ */
+extern unsigned long find_first_bit(const unsigned long *addr,
+ unsigned long size);
+
+/**
+ * find_first_zero_bit - find the first cleared bit in a memory region
+ * @addr: The address to start the search at
+ * @size: The maximum size to search
+ *
+ * Returns the bit number of the first cleared bit.
+ */
+extern unsigned long find_first_zero_bit(const unsigned long *addr,
+ unsigned long size);
+#else /* CONFIG_GENERIC_FIND_FIRST_BIT */
#define find_first_bit(addr, size) find_next_bit((addr), (size), 0)
#define find_first_zero_bit(addr, size) find_next_zero_bit((addr), (size), 0)
+#endif /* CONFIG_GENERIC_FIND_FIRST_BIT */
+
#endif /*_ASM_GENERIC_BITOPS_FIND_H_ */