iommu sg: kill __clear_bit_string and find_next_zero_string

This kills unused __clear_bit_string and find_next_zero_string (they
were used by only gart and calgary IOMMUs).

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Muli Ben-Yehuda <mulix@mulix.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

3 files changed, 1 insertions, 45 deletions

diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index 4876182daf8a..25df1c1989fe 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -21,7 +21,7 @@ else
 
         lib-y += csum-partial_64.o csum-copy_64.o csum-wrappers_64.o
         lib-y += thunk_64.o clear_page_64.o copy_page_64.o
-        lib-y += bitstr_64.o bitops_64.o
+        lib-y += bitops_64.o
         lib-y += memmove_64.o memset_64.o
         lib-y += copy_user_64.o rwlock_64.o copy_user_nocache_64.o
 endif
diff --git a/arch/x86/lib/bitstr_64.c b/arch/x86/lib/bitstr_64.c
deleted file mode 100644
index 7445caf1b5de..000000000000
--- a/arch/x86/lib/bitstr_64.c
+++ /dev/null
@@ -1,28 +0,0 @@
-#include <linux/module.h>
-#include <linux/bitops.h>
-
-/* Find string of zero bits in a bitmap */ 
-unsigned long 
-find_next_zero_string(unsigned long *bitmap, long start, long nbits, int len)
-{ 
-        unsigned long n, end, i;        
-
- again:
-        n = find_next_zero_bit(bitmap, nbits, start);
-        if (n == -1) 
-                return -1;
-        
-        /* could test bitsliced, but it's hardly worth it */
-        end = n+len;
-        if (end > nbits)
-                return -1; 
-        for (i = n+1; i < end; i++) { 
-                if (test_bit(i, bitmap)) {  
-                        start = i+1; 
-                        goto again; 
-                } 
-        }
-        return n;
-}
-
-EXPORT_SYMBOL(find_next_zero_string);
diff --git a/include/asm-x86/bitops_64.h b/include/asm-x86/bitops_64.h
index 48adbf56ca60..aaf15194d536 100644
--- a/include/asm-x86/bitops_64.h
+++ b/include/asm-x86/bitops_64.h
@@ -37,12 +37,6 @@ static inline long __scanbit(unsigned long val, unsigned long max)
   ((off)+(__scanbit(~(((*(unsigned long *)addr)) >> (off)),(size)-(off)))) : \
         find_next_zero_bit(addr,size,off)))
 
-/* 
- * Find string of zero bits in a bitmap. -1 when not found.
- */ 
-extern unsigned long 
-find_next_zero_string(unsigned long *bitmap, long start, long nbits, int len);
-
 static inline void set_bit_string(unsigned long *bitmap, unsigned long i, 
                                   int len) 
 { 
@@ -53,16 +47,6 @@ static inline void set_bit_string(unsigned long *bitmap, unsigned long i,
         }
 } 
 
-static inline void __clear_bit_string(unsigned long *bitmap, unsigned long i, 
-                                    int len) 
-{ 
-        unsigned long end = i + len; 
-        while (i < end) {
-                __clear_bit(i, bitmap); 
-                i++;
-        }
-} 
-
 /**
  * ffz - find first zero in word.
  * @word: The word to search