[PATCH 12/12] generic minix_{test,set,test_and_clear,test,find_first_zero}_bit()

Akinobu Mita
2006-01-26T03:39:11Z

This patch introduces the C-language equivalents of the functions below:

HAVE_ARCH_MINIX_BITOPS is defined when the architecture has its own
version of these functions.

int minix_test_and_set_bit(int nr, volatile unsigned long *addr);
int minix_set_bit(int nr, volatile unsigned long *addr);
int minix_test_and_clear_bit(int nr, volatile unsigned long *addr);
int minix_test_bit(int nr, const volatile unsigned long *addr);
unsigned long minix_find_first_zero_bit(const unsigned long *addr,
unsigned long size);

This code largely copied from:
include/asm-sparc/bitops.h

Index: 2.6-git/include/asm-generic/bitops.h
=================================--- 2.6-git.orig/include/asm-generic/bitops.h 2006-01-25 19:14:12.000000000 +0900
+++ 2.6-git/include/asm-generic/bitops.h 2006-01-25 19:14:12.000000000 +0900
@@ -667,6 +667,21 @@

#endif /* HAVE_ARCH_EXT2_ATOMIC_BITOPS */

+#ifndef HAVE_ARCH_MINIX_BITOPS
+
+#define minix_test_and_set_bit(nr,addr) \
+ __test_and_set_bit((nr),(unsigned long *)(addr))
+#define minix_set_bit(nr,addr) \
+ __set_bit((nr),(unsigned long *)(addr))
+#define minix_test_and_clear_bit(nr,addr) \
+ __test_and_clear_bit((nr),(unsigned long *)(addr))
+#define minix_test_bit(nr,addr) \
+ test_bit((nr),(unsigned long *)(addr))
+#define minix_find_first_zero_bit(addr,size) \
+ find_first_zero_bit((unsigned long *)(addr),(size))
+
+#endif /* HAVE_ARCH_MINIX_BITOPS */
+
#endif /* __KERNEL__ */

#endif /* _ASM_GENERIC_BITOPS_H */