From: FUJITA Tomonori <tomof@acm.org>
Date: Tue, 5 Feb 2008 06:28:12 +0000 (-0800)
Subject: iommu sg: kill __clear_bit_string and find_next_zero_string
X-Git-Tag: firefly_0821_release~23494
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=67ec11cf968241c9ae907f8817b6ac74d4dd71d7;p=firefly-linux-kernel-4.4.55.git
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>
---
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