From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Thu, 29 Jun 2006 12:56:13 +0000 (+0200)
Subject: [S390] cleanup bitops.h.
X-Git-Tag: v2.6.18-rc1~360^2~27
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c406abd3a6d0cf5ce8db4db155a729a28fb98c4f;p=linux-2.6

[S390] cleanup bitops.h.

Encapsulate complete bitops.h with #ifdef __KERNEL__ and remove the now
superfluous ALIGN_CS define and its users.
This patch is needed for compiling klibc.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

diff --git a/include/asm-s390/bitops.h b/include/asm-s390/bitops.h
index 4d2b126ba1..0ddcdba79e 100644
--- a/include/asm-s390/bitops.h
+++ b/include/asm-s390/bitops.h
@@ -12,6 +12,9 @@
  *    Copyright (C) 1992, Linus Torvalds
  *
  */
+
+#ifdef __KERNEL__
+
 #include <linux/compiler.h>
 
 /*
@@ -50,19 +53,6 @@
  * with operation of the form "set_bit(bitnr, flags)".
  */
 
-/* set ALIGN_CS to 1 if the SMP safe bit operations should
- * align the address to 4 byte boundary. It seems to work
- * without the alignment. 
- */
-#ifdef __KERNEL__
-#define ALIGN_CS 0
-#else
-#define ALIGN_CS 1
-#ifndef CONFIG_SMP
-#error "bitops won't work without CONFIG_SMP"
-#endif
-#endif
-
 /* bitmap tables from arch/S390/kernel/bitmap.S */
 extern const char _oi_bitmap[];
 extern const char _ni_bitmap[];
@@ -121,10 +111,6 @@ static inline void set_bit_cs(unsigned long nr, volatile unsigned long *ptr)
         unsigned long addr, old, new, mask;
 
 	addr = (unsigned long) ptr;
-#if ALIGN_CS == 1
-	nr += (addr & __BITOPS_ALIGN) << 3;    /* add alignment to bit number */
-	addr ^= addr & __BITOPS_ALIGN;	       /* align address to 8 */
-#endif
 	/* calculate address for CS */
 	addr += (nr ^ (nr & (__BITOPS_WORDSIZE - 1))) >> 3;
 	/* make OR mask */
@@ -141,10 +127,6 @@ static inline void clear_bit_cs(unsigned long nr, volatile unsigned long *ptr)
         unsigned long addr, old, new, mask;
 
 	addr = (unsigned long) ptr;
-#if ALIGN_CS == 1
-	nr += (addr & __BITOPS_ALIGN) << 3;    /* add alignment to bit number */
-	addr ^= addr & __BITOPS_ALIGN;	       /* align address to 8 */
-#endif
 	/* calculate address for CS */
 	addr += (nr ^ (nr & (__BITOPS_WORDSIZE - 1))) >> 3;
 	/* make AND mask */
@@ -161,10 +143,6 @@ static inline void change_bit_cs(unsigned long nr, volatile unsigned long *ptr)
         unsigned long addr, old, new, mask;
 
 	addr = (unsigned long) ptr;
-#if ALIGN_CS == 1
-	nr += (addr & __BITOPS_ALIGN) << 3;    /* add alignment to bit number */
-	addr ^= addr & __BITOPS_ALIGN;	       /* align address to 8 */
-#endif
 	/* calculate address for CS */
 	addr += (nr ^ (nr & (__BITOPS_WORDSIZE - 1))) >> 3;
 	/* make XOR mask */
@@ -182,10 +160,6 @@ test_and_set_bit_cs(unsigned long nr, volatile unsigned long *ptr)
         unsigned long addr, old, new, mask;
 
 	addr = (unsigned long) ptr;
-#if ALIGN_CS == 1
-	nr += (addr & __BITOPS_ALIGN) << 3;    /* add alignment to bit number */
-	addr ^= addr & __BITOPS_ALIGN;	       /* align address to 8 */
-#endif
 	/* calculate address for CS */
 	addr += (nr ^ (nr & (__BITOPS_WORDSIZE - 1))) >> 3;
 	/* make OR/test mask */
@@ -205,10 +179,6 @@ test_and_clear_bit_cs(unsigned long nr, volatile unsigned long *ptr)
         unsigned long addr, old, new, mask;
 
 	addr = (unsigned long) ptr;
-#if ALIGN_CS == 1
-	nr += (addr & __BITOPS_ALIGN) << 3;    /* add alignment to bit number */
-	addr ^= addr & __BITOPS_ALIGN;	       /* align address to 8 */
-#endif
 	/* calculate address for CS */
 	addr += (nr ^ (nr & (__BITOPS_WORDSIZE - 1))) >> 3;
 	/* make AND/test mask */
@@ -228,10 +198,6 @@ test_and_change_bit_cs(unsigned long nr, volatile unsigned long *ptr)
         unsigned long addr, old, new, mask;
 
 	addr = (unsigned long) ptr;
-#if ALIGN_CS == 1
-	nr += (addr & __BITOPS_ALIGN) << 3;  /* add alignment to bit number */
-	addr ^= addr & __BITOPS_ALIGN;	     /* align address to 8 */
-#endif
 	/* calculate address for CS */
 	addr += (nr ^ (nr & (__BITOPS_WORDSIZE - 1))) >> 3;
 	/* make XOR/test mask */
@@ -834,8 +800,6 @@ static inline int sched_find_first_bit(unsigned long *b)
 
 #include <asm-generic/bitops/hweight.h>
 
-#ifdef __KERNEL__
-
 /*
  * ATTENTION: intel byte ordering convention for ext2 and minix !!
  * bit 0 is the LSB of addr; bit 31 is the MSB of addr;