forked from luck/tmp_suning_uos_patched
tools lib: Move asm-generic/bitops/find.h code to tools/include and tools/lib
To match the Linux kernel source code structure from where this code came from. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-fkbma1h04ki0zzdmp0dpgfyy@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
parent
93c49b3e53
commit
23e1a358e8
33
tools/include/asm-generic/bitops/find.h
Normal file
33
tools/include/asm-generic/bitops/find.h
Normal file
|
|
@ -0,0 +1,33 @@
|
|||
#ifndef _TOOLS_LINUX_ASM_GENERIC_BITOPS_FIND_H_
|
||||
#define _TOOLS_LINUX_ASM_GENERIC_BITOPS_FIND_H_
|
||||
|
||||
#ifndef 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
|
||||
*
|
||||
* Returns the bit number for the next set bit
|
||||
* If no bits are set, returns @size.
|
||||
*/
|
||||
extern unsigned long find_next_bit(const unsigned long *addr, unsigned long
|
||||
size, unsigned long offset);
|
||||
#endif
|
||||
|
||||
#ifndef 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 number of bits to search
|
||||
*
|
||||
* Returns the bit number of the first set bit.
|
||||
* If no bits are set, returns @size.
|
||||
*/
|
||||
extern unsigned long find_first_bit(const unsigned long *addr,
|
||||
unsigned long size);
|
||||
|
||||
#endif /* find_first_bit */
|
||||
|
||||
#endif /*_TOOLS_LINUX_ASM_GENERIC_BITOPS_FIND_H_ */
|
||||
89
tools/lib/util/find_next_bit.c
Normal file
89
tools/lib/util/find_next_bit.c
Normal file
|
|
@ -0,0 +1,89 @@
|
|||
/* find_next_bit.c: fallback find next bit implementation
|
||||
*
|
||||
* Copied from lib/find_next_bit.c to tools/lib/next_bit.c
|
||||
*
|
||||
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
|
||||
* Written by David Howells (dhowells@redhat.com)
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License
|
||||
* as published by the Free Software Foundation; either version
|
||||
* 2 of the License, or (at your option) any later version.
|
||||
*/
|
||||
|
||||
#include <linux/bitops.h>
|
||||
#include <asm/types.h>
|
||||
#include <asm/byteorder.h>
|
||||
|
||||
#define BITOP_WORD(nr) ((nr) / BITS_PER_LONG)
|
||||
|
||||
#ifndef find_next_bit
|
||||
/*
|
||||
* Find the next set bit in a memory region.
|
||||
*/
|
||||
unsigned long find_next_bit(const unsigned long *addr, unsigned long size,
|
||||
unsigned long offset)
|
||||
{
|
||||
const unsigned long *p = addr + BITOP_WORD(offset);
|
||||
unsigned long result = offset & ~(BITS_PER_LONG-1);
|
||||
unsigned long tmp;
|
||||
|
||||
if (offset >= size)
|
||||
return size;
|
||||
size -= result;
|
||||
offset %= BITS_PER_LONG;
|
||||
if (offset) {
|
||||
tmp = *(p++);
|
||||
tmp &= (~0UL << offset);
|
||||
if (size < BITS_PER_LONG)
|
||||
goto found_first;
|
||||
if (tmp)
|
||||
goto found_middle;
|
||||
size -= BITS_PER_LONG;
|
||||
result += BITS_PER_LONG;
|
||||
}
|
||||
while (size & ~(BITS_PER_LONG-1)) {
|
||||
if ((tmp = *(p++)))
|
||||
goto found_middle;
|
||||
result += BITS_PER_LONG;
|
||||
size -= BITS_PER_LONG;
|
||||
}
|
||||
if (!size)
|
||||
return result;
|
||||
tmp = *p;
|
||||
|
||||
found_first:
|
||||
tmp &= (~0UL >> (BITS_PER_LONG - size));
|
||||
if (tmp == 0UL) /* Are any bits set? */
|
||||
return result + size; /* Nope. */
|
||||
found_middle:
|
||||
return result + __ffs(tmp);
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifndef find_first_bit
|
||||
/*
|
||||
* Find the first set bit in a memory region.
|
||||
*/
|
||||
unsigned long find_first_bit(const unsigned long *addr, unsigned long size)
|
||||
{
|
||||
const unsigned long *p = addr;
|
||||
unsigned long result = 0;
|
||||
unsigned long tmp;
|
||||
|
||||
while (size & ~(BITS_PER_LONG-1)) {
|
||||
if ((tmp = *(p++)))
|
||||
goto found;
|
||||
result += BITS_PER_LONG;
|
||||
size -= BITS_PER_LONG;
|
||||
}
|
||||
if (!size)
|
||||
return result;
|
||||
|
||||
tmp = (*p) & (~0UL >> (BITS_PER_LONG - size));
|
||||
if (tmp == 0UL) /* Are any bits set? */
|
||||
return result + size; /* Nope. */
|
||||
found:
|
||||
return result + __ffs(tmp);
|
||||
}
|
||||
#endif
|
||||
|
|
@ -4,8 +4,10 @@ tools/lib/traceevent
|
|||
tools/lib/api
|
||||
tools/lib/symbol/kallsyms.c
|
||||
tools/lib/symbol/kallsyms.h
|
||||
tools/lib/util/find_next_bit.c
|
||||
tools/include/asm/bug.h
|
||||
tools/include/asm-generic/bitops/atomic.h
|
||||
tools/include/asm-generic/bitops/find.h
|
||||
tools/include/asm-generic/bitops/__ffs.h
|
||||
tools/include/linux/compiler.h
|
||||
tools/include/linux/export.h
|
||||
|
|
@ -18,6 +20,7 @@ include/linux/rbtree.h
|
|||
include/linux/list.h
|
||||
include/linux/hash.h
|
||||
include/linux/stringify.h
|
||||
lib/find_next_bit.c
|
||||
lib/rbtree.c
|
||||
include/linux/swab.h
|
||||
arch/*/include/asm/unistd*.h
|
||||
|
|
|
|||
|
|
@ -233,6 +233,7 @@ LIB_H += ../../include/linux/stringify.h
|
|||
LIB_H += util/include/linux/bitmap.h
|
||||
LIB_H += util/include/linux/bitops.h
|
||||
LIB_H += ../include/asm-generic/bitops/atomic.h
|
||||
LIB_H += ../include/asm-generic/bitops/find.h
|
||||
LIB_H += ../include/asm-generic/bitops/__ffs.h
|
||||
LIB_H += ../include/linux/compiler.h
|
||||
LIB_H += ../include/linux/log2.h
|
||||
|
|
@ -338,6 +339,7 @@ LIB_OBJS += $(OUTPUT)util/event.o
|
|||
LIB_OBJS += $(OUTPUT)util/evlist.o
|
||||
LIB_OBJS += $(OUTPUT)util/evsel.o
|
||||
LIB_OBJS += $(OUTPUT)util/exec_cmd.o
|
||||
LIB_OBJS += $(OUTPUT)util/find_next_bit.o
|
||||
LIB_OBJS += $(OUTPUT)util/help.o
|
||||
LIB_OBJS += $(OUTPUT)util/kallsyms.o
|
||||
LIB_OBJS += $(OUTPUT)util/levenshtein.o
|
||||
|
|
@ -737,6 +739,9 @@ $(OUTPUT)util/kallsyms.o: ../lib/symbol/kallsyms.c $(OUTPUT)PERF-CFLAGS
|
|||
$(OUTPUT)util/rbtree.o: ../../lib/rbtree.c $(OUTPUT)PERF-CFLAGS
|
||||
$(QUIET_CC)$(CC) -o $@ -c $(CFLAGS) -Wno-unused-parameter -DETC_PERFCONFIG='"$(ETC_PERFCONFIG_SQ)"' $<
|
||||
|
||||
$(OUTPUT)util/find_next_bit.o: ../lib/util/find_next_bit.c $(OUTPUT)PERF-CFLAGS
|
||||
$(QUIET_CC)$(CC) -o $@ -c $(CFLAGS) -Wno-unused-parameter -DETC_PERFCONFIG='"$(ETC_PERFCONFIG_SQ)"' $<
|
||||
|
||||
$(OUTPUT)util/parse-events.o: util/parse-events.c $(OUTPUT)PERF-CFLAGS
|
||||
$(QUIET_CC)$(CC) -o $@ -c $(CFLAGS) -Wno-redundant-decls $<
|
||||
|
||||
|
|
|
|||
|
|
@ -37,78 +37,7 @@ static inline unsigned long hweight_long(unsigned long w)
|
|||
return sizeof(w) == 4 ? hweight32(w) : hweight64(w);
|
||||
}
|
||||
|
||||
#define BITOP_WORD(nr) ((nr) / BITS_PER_LONG)
|
||||
|
||||
#include <asm-generic/bitops/__ffs.h>
|
||||
|
||||
typedef const unsigned long __attribute__((__may_alias__)) long_alias_t;
|
||||
|
||||
/*
|
||||
* Find the first set bit in a memory region.
|
||||
*/
|
||||
static inline unsigned long
|
||||
find_first_bit(const unsigned long *addr, unsigned long size)
|
||||
{
|
||||
long_alias_t *p = (long_alias_t *) addr;
|
||||
unsigned long result = 0;
|
||||
unsigned long tmp;
|
||||
|
||||
while (size & ~(BITS_PER_LONG-1)) {
|
||||
if ((tmp = *(p++)))
|
||||
goto found;
|
||||
result += BITS_PER_LONG;
|
||||
size -= BITS_PER_LONG;
|
||||
}
|
||||
if (!size)
|
||||
return result;
|
||||
|
||||
tmp = (*p) & (~0UL >> (BITS_PER_LONG - size));
|
||||
if (tmp == 0UL) /* Are any bits set? */
|
||||
return result + size; /* Nope. */
|
||||
found:
|
||||
return result + __ffs(tmp);
|
||||
}
|
||||
|
||||
/*
|
||||
* Find the next set bit in a memory region.
|
||||
*/
|
||||
static inline unsigned long
|
||||
find_next_bit(const unsigned long *addr, unsigned long size, unsigned long offset)
|
||||
{
|
||||
const unsigned long *p = addr + BITOP_WORD(offset);
|
||||
unsigned long result = offset & ~(BITS_PER_LONG-1);
|
||||
unsigned long tmp;
|
||||
|
||||
if (offset >= size)
|
||||
return size;
|
||||
size -= result;
|
||||
offset %= BITS_PER_LONG;
|
||||
if (offset) {
|
||||
tmp = *(p++);
|
||||
tmp &= (~0UL << offset);
|
||||
if (size < BITS_PER_LONG)
|
||||
goto found_first;
|
||||
if (tmp)
|
||||
goto found_middle;
|
||||
size -= BITS_PER_LONG;
|
||||
result += BITS_PER_LONG;
|
||||
}
|
||||
while (size & ~(BITS_PER_LONG-1)) {
|
||||
if ((tmp = *(p++)))
|
||||
goto found_middle;
|
||||
result += BITS_PER_LONG;
|
||||
size -= BITS_PER_LONG;
|
||||
}
|
||||
if (!size)
|
||||
return result;
|
||||
tmp = *p;
|
||||
|
||||
found_first:
|
||||
tmp &= (~0UL >> (BITS_PER_LONG - size));
|
||||
if (tmp == 0UL) /* Are any bits set? */
|
||||
return result + size; /* Nope. */
|
||||
found_middle:
|
||||
return result + __ffs(tmp);
|
||||
}
|
||||
#include <asm-generic/bitops/find.h>
|
||||
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user