libperf: Move to tools/lib/perf

Move libperf from its current location under tools/perf to a separate
directory under tools/lib/.

Also change various paths (mainly includes) to reflect the libperf move
to a separate directory and add a new directory under MANIFEST.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20191206210612.8676-2-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

39 files changed, 3 insertions, 3868 deletions

diff --git a/tools/perf/MANIFEST b/tools/perf/MANIFEST
index 4934edb5adfd..5d7b947320fb 100644
--- a/tools/perf/MANIFEST
+++ b/tools/perf/MANIFEST
@@ -7,6 +7,7 @@ tools/lib/traceevent
 tools/lib/api
 tools/lib/bpf
 tools/lib/subcmd
+tools/lib/perf
 tools/lib/argv_split.c
 tools/lib/ctype.c
 tools/lib/hweight.c
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index c90f4146e5a2..80e55e796be9 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -286,7 +286,7 @@ ifeq ($(DEBUG),0)
   endif
 endif
 
-INC_FLAGS += -I$(src-perf)/lib/include
+INC_FLAGS += -I$(srctree)/tools/lib/perf/include
 INC_FLAGS += -I$(src-perf)/util/include
 INC_FLAGS += -I$(src-perf)/arch/$(SRCARCH)/include
 INC_FLAGS += -I$(srctree)/tools/include/
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index eae5d5e95952..3eda9d4b88e7 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -230,7 +230,7 @@ LIB_DIR         = $(srctree)/tools/lib/api/
 TRACE_EVENT_DIR = $(srctree)/tools/lib/traceevent/
 BPF_DIR         = $(srctree)/tools/lib/bpf/
 SUBCMD_DIR      = $(srctree)/tools/lib/subcmd/
-LIBPERF_DIR     = $(srctree)/tools/perf/lib/
+LIBPERF_DIR     = $(srctree)/tools/lib/perf/
 
 # Set FEATURE_TESTS to 'all' so all possible feature checkers are executed.
 # Without this setting the output feature dump file misses some features, for
diff --git a/tools/perf/lib/Build b/tools/perf/lib/Build
deleted file mode 100644
index 2ef9a4ec6d99..000000000000
--- a/tools/perf/lib/Build
+++ /dev/null
@@ -1,13 +0,0 @@
-libperf-y += core.o
-libperf-y += cpumap.o
-libperf-y += threadmap.o
-libperf-y += evsel.o
-libperf-y += evlist.o
-libperf-y += mmap.o
-libperf-y += zalloc.o
-libperf-y += xyarray.o
-libperf-y += lib.o
-
-$(OUTPUT)zalloc.o: ../../lib/zalloc.c FORCE
-	$(call rule_mkdir)
-	$(call if_changed_dep,cc_o_c)
diff --git a/tools/perf/lib/Documentation/Makefile b/tools/perf/lib/Documentation/Makefile
deleted file mode 100644
index 586425a88795..000000000000
--- a/tools/perf/lib/Documentation/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-all:
-	rst2man man/libperf.rst > man/libperf.7
-	rst2pdf tutorial/tutorial.rst
-
-clean:
-	rm -f man/libperf.7
-	rm -f tutorial/tutorial.pdf
diff --git a/tools/perf/lib/Documentation/man/libperf.rst b/tools/perf/lib/Documentation/man/libperf.rst
deleted file mode 100644
index 09a270fccb9c..000000000000
--- a/tools/perf/lib/Documentation/man/libperf.rst
+++ /dev/null
@@ -1,100 +0,0 @@
-.. SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
-
-libperf
-
-The libperf library provides an API to access the linux kernel perf
-events subsystem. It provides the following high level objects:
-
-  - struct perf_cpu_map
-  - struct perf_thread_map
-  - struct perf_evlist
-  - struct perf_evsel
-
-reference
-=========
-Function reference by header files:
-
-perf/core.h
------------
-.. code-block:: c
-
-  typedef int (\*libperf_print_fn_t)(enum libperf_print_level level,
-                                     const char \*, va_list ap);
-
-  void libperf_set_print(libperf_print_fn_t fn);
-
-perf/cpumap.h
--------------
-.. code-block:: c
-
-  struct perf_cpu_map \*perf_cpu_map__dummy_new(void);
-  struct perf_cpu_map \*perf_cpu_map__new(const char \*cpu_list);
-  struct perf_cpu_map \*perf_cpu_map__read(FILE \*file);
-  struct perf_cpu_map \*perf_cpu_map__get(struct perf_cpu_map \*map);
-  void perf_cpu_map__put(struct perf_cpu_map \*map);
-  int perf_cpu_map__cpu(const struct perf_cpu_map \*cpus, int idx);
-  int perf_cpu_map__nr(const struct perf_cpu_map \*cpus);
-  perf_cpu_map__for_each_cpu(cpu, idx, cpus)
-
-perf/threadmap.h
-----------------
-.. code-block:: c
-
-  struct perf_thread_map \*perf_thread_map__new_dummy(void);
-  void perf_thread_map__set_pid(struct perf_thread_map \*map, int thread, pid_t pid);
-  char \*perf_thread_map__comm(struct perf_thread_map \*map, int thread);
-  struct perf_thread_map \*perf_thread_map__get(struct perf_thread_map \*map);
-  void perf_thread_map__put(struct perf_thread_map \*map);
-
-perf/evlist.h
--------------
-.. code-block::
-
-  void perf_evlist__init(struct perf_evlist \*evlist);
-  void perf_evlist__add(struct perf_evlist \*evlist,
-                      struct perf_evsel \*evsel);
-  void perf_evlist__remove(struct perf_evlist \*evlist,
-                         struct perf_evsel \*evsel);
-  struct perf_evlist \*perf_evlist__new(void);
-  void perf_evlist__delete(struct perf_evlist \*evlist);
-  struct perf_evsel\* perf_evlist__next(struct perf_evlist \*evlist,
-                                     struct perf_evsel \*evsel);
-  int perf_evlist__open(struct perf_evlist \*evlist);
-  void perf_evlist__close(struct perf_evlist \*evlist);
-  void perf_evlist__enable(struct perf_evlist \*evlist);
-  void perf_evlist__disable(struct perf_evlist \*evlist);
-  perf_evlist__for_each_evsel(evlist, pos)
-  void perf_evlist__set_maps(struct perf_evlist \*evlist,
-                           struct perf_cpu_map \*cpus,
-                           struct perf_thread_map \*threads);
-
-perf/evsel.h
-------------
-.. code-block:: c
-
-  struct perf_counts_values {
-        union {
-                struct {
-                        uint64_t val;
-                        uint64_t ena;
-                        uint64_t run;
-                };
-                uint64_t values[3];
-        };
-  };
-
-  void perf_evsel__init(struct perf_evsel \*evsel,
-                      struct perf_event_attr \*attr);
-  struct perf_evsel \*perf_evsel__new(struct perf_event_attr \*attr);
-  void perf_evsel__delete(struct perf_evsel \*evsel);
-  int perf_evsel__open(struct perf_evsel \*evsel, struct perf_cpu_map \*cpus,
-                     struct perf_thread_map \*threads);
-  void perf_evsel__close(struct perf_evsel \*evsel);
-  int perf_evsel__read(struct perf_evsel \*evsel, int cpu, int thread,
-                     struct perf_counts_values \*count);
-  int perf_evsel__enable(struct perf_evsel \*evsel);
-  int perf_evsel__disable(struct perf_evsel \*evsel);
-  int perf_evsel__apply_filter(struct perf_evsel \*evsel, const char \*filter);
-  struct perf_cpu_map \*perf_evsel__cpus(struct perf_evsel \*evsel);
-  struct perf_thread_map \*perf_evsel__threads(struct perf_evsel \*evsel);
-  struct perf_event_attr \*perf_evsel__attr(struct perf_evsel \*evsel);
diff --git a/tools/perf/lib/Documentation/tutorial/tutorial.rst b/tools/perf/lib/Documentation/tutorial/tutorial.rst
deleted file mode 100644
index 7be7bc27b385..000000000000
--- a/tools/perf/lib/Documentation/tutorial/tutorial.rst
+++ /dev/null
@@ -1,123 +0,0 @@
-.. SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
-
-libperf tutorial
-================
-
-Compile and install libperf from kernel sources
-===============================================
-.. code-block:: bash
-
-  git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
-  cd linux/tools/perf/lib
-  make
-  sudo make install prefix=/usr
-
-Libperf object
-==============
-The libperf library provides several high level objects:
-
-struct perf_cpu_map
-  Provides a cpu list abstraction.
-
-struct perf_thread_map
-  Provides a thread list abstraction.
-
-struct perf_evsel
-  Provides an abstraction for single a perf event.
-
-struct perf_evlist
-  Gathers several struct perf_evsel object and performs functions on all of them.
-
-The exported API binds these objects together,
-for full reference see the libperf.7 man page.
-
-Examples
-========
-Examples aim to explain libperf functionality on simple use cases.
-They are based in on a checked out linux kernel git tree:
-
-.. code-block:: bash
-
-  $ cd tools/perf/lib/Documentation/tutorial/
-  $ ls -d  ex-*
-  ex-1-compile  ex-2-evsel-stat  ex-3-evlist-stat
-
-ex-1-compile example
-====================
-This example shows the basic usage of *struct perf_cpu_map*,
-how to create it and display its cpus:
-
-.. code-block:: bash
-
-  $ cd ex-1-compile/
-  $ make
-  gcc -o test test.c -lperf
-  $ ./test
-  0 1 2 3 4 5 6 7
-
-
-The full code listing is here:
-
-.. code-block:: c
-
-   1 #include <perf/cpumap.h>
-   2
-   3 int main(int argc, char **Argv)
-   4 {
-   5         struct perf_cpu_map *cpus;
-   6         int cpu, tmp;
-   7
-   8         cpus = perf_cpu_map__new(NULL);
-   9
-  10         perf_cpu_map__for_each_cpu(cpu, tmp, cpus)
-  11                 fprintf(stdout, "%d ", cpu);
-  12
-  13         fprintf(stdout, "\n");
-  14
-  15         perf_cpu_map__put(cpus);
-  16         return 0;
-  17 }
-
-
-First you need to include the proper header to have *struct perf_cpumap*
-declaration and functions:
-
-.. code-block:: c
-
-   1 #include <perf/cpumap.h>
-
-
-The *struct perf_cpumap* object is created by *perf_cpu_map__new* call.
-The *NULL* argument asks it to populate the object with the current online CPUs list:
-
-.. code-block:: c
-
-   8         cpus = perf_cpu_map__new(NULL);
-
-This is paired with a *perf_cpu_map__put*, that drops its reference at the end, possibly deleting it.
-
-.. code-block:: c
-
-  15         perf_cpu_map__put(cpus);
-
-The iteration through the *struct perf_cpumap* CPUs is done using the *perf_cpu_map__for_each_cpu*
-macro which requires 3 arguments:
-
-- cpu  - the cpu numer
-- tmp  - iteration helper variable
-- cpus - the *struct perf_cpumap* object
-
-.. code-block:: c
-
-  10         perf_cpu_map__for_each_cpu(cpu, tmp, cpus)
-  11                 fprintf(stdout, "%d ", cpu);
-
-ex-2-evsel-stat example
-=======================
-
-TBD
-
-ex-3-evlist-stat example
-========================
-
-TBD
diff --git a/tools/perf/lib/Makefile b/tools/perf/lib/Makefile
deleted file mode 100644
index 0f233638ef1f..000000000000
--- a/tools/perf/lib/Makefile
+++ /dev/null
@@ -1,188 +0,0 @@
-# SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
-# Most of this file is copied from tools/lib/bpf/Makefile
-
-LIBPERF_VERSION = 0
-LIBPERF_PATCHLEVEL = 0
-LIBPERF_EXTRAVERSION = 1
-
-MAKEFLAGS += --no-print-directory
-
-ifeq ($(srctree),)
-srctree := $(patsubst %/,%,$(dir $(CURDIR)))
-srctree := $(patsubst %/,%,$(dir $(srctree)))
-srctree := $(patsubst %/,%,$(dir $(srctree)))
-#$(info Determined 'srctree' to be $(srctree))
-endif
-
-INSTALL = install
-
-# Use DESTDIR for installing into a different root directory.
-# This is useful for building a package. The program will be
-# installed in this directory as if it was the root directory.
-# Then the build tool can move it later.
-DESTDIR ?=
-DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'
-
-include $(srctree)/tools/scripts/Makefile.include
-include $(srctree)/tools/scripts/Makefile.arch
-
-ifeq ($(LP64), 1)
-  libdir_relative = lib64
-else
-  libdir_relative = lib
-endif
-
-prefix ?=
-libdir = $(prefix)/$(libdir_relative)
-
-# Shell quotes
-libdir_SQ = $(subst ','\'',$(libdir))
-libdir_relative_SQ = $(subst ','\'',$(libdir_relative))
-
-ifeq ("$(origin V)", "command line")
-  VERBOSE = $(V)
-endif
-ifndef VERBOSE
-  VERBOSE = 0
-endif
-
-ifeq ($(VERBOSE),1)
-  Q =
-else
-  Q = @
-endif
-
-# Set compile option CFLAGS
-ifdef EXTRA_CFLAGS
-  CFLAGS := $(EXTRA_CFLAGS)
-else
-  CFLAGS := -g -Wall
-endif
-
-INCLUDES = \
--I$(srctree)/tools/perf/lib/include \
--I$(srctree)/tools/lib/ \
--I$(srctree)/tools/include \
--I$(srctree)/tools/arch/$(SRCARCH)/include/ \
--I$(srctree)/tools/arch/$(SRCARCH)/include/uapi \
--I$(srctree)/tools/include/uapi
-
-# Append required CFLAGS
-override CFLAGS += $(EXTRA_WARNINGS)
-override CFLAGS += -Werror -Wall
-override CFLAGS += -fPIC
-override CFLAGS += $(INCLUDES)
-override CFLAGS += -fvisibility=hidden
-
-all:
-
-export srctree OUTPUT CC LD CFLAGS V
-export DESTDIR DESTDIR_SQ
-
-include $(srctree)/tools/build/Makefile.include
-
-VERSION_SCRIPT := libperf.map
-
-PATCHLEVEL    = $(LIBPERF_PATCHLEVEL)
-EXTRAVERSION  = $(LIBPERF_EXTRAVERSION)
-VERSION       = $(LIBPERF_VERSION).$(LIBPERF_PATCHLEVEL).$(LIBPERF_EXTRAVERSION)
-
-LIBPERF_SO := $(OUTPUT)libperf.so.$(VERSION)
-LIBPERF_A  := $(OUTPUT)libperf.a
-LIBPERF_IN := $(OUTPUT)libperf-in.o
-LIBPERF_PC := $(OUTPUT)libperf.pc
-
-LIBPERF_ALL := $(LIBPERF_A) $(OUTPUT)libperf.so*
-
-LIB_DIR := $(srctree)/tools/lib/api/
-
-ifneq ($(OUTPUT),)
-ifneq ($(subdir),)
-  API_PATH=$(OUTPUT)/../lib/api/
-else
-  API_PATH=$(OUTPUT)
-endif
-else
-  API_PATH=$(LIB_DIR)
-endif
-
-LIBAPI = $(API_PATH)libapi.a
-export LIBAPI
-
-$(LIBAPI): FORCE
-	$(Q)$(MAKE) -C $(LIB_DIR) O=$(OUTPUT) $(OUTPUT)libapi.a
-
-$(LIBAPI)-clean:
-	$(call QUIET_CLEAN, libapi)
-	$(Q)$(MAKE) -C $(LIB_DIR) O=$(OUTPUT) clean >/dev/null
-
-$(LIBPERF_IN): FORCE
-	$(Q)$(MAKE) $(build)=libperf
-
-$(LIBPERF_A): $(LIBPERF_IN)
-	$(QUIET_AR)$(RM) $@ && $(AR) rcs $@ $(LIBPERF_IN)
-
-$(LIBPERF_SO): $(LIBPERF_IN) $(LIBAPI)
-	$(QUIET_LINK)$(CC) --shared -Wl,-soname,libperf.so \
-                                    -Wl,--version-script=$(VERSION_SCRIPT) $^ -o $@
-	@ln -sf $(@F) $(OUTPUT)libperf.so
-	@ln -sf $(@F) $(OUTPUT)libperf.so.$(LIBPERF_VERSION)
-
-
-libs: $(LIBPERF_A) $(LIBPERF_SO) $(LIBPERF_PC)
-
-all: fixdep
-	$(Q)$(MAKE) libs
-
-clean: $(LIBAPI)-clean
-	$(call QUIET_CLEAN, libperf) $(RM) $(LIBPERF_A) \
-                *.o *~ *.a *.so *.so.$(VERSION) *.so.$(LIBPERF_VERSION) .*.d .*.cmd LIBPERF-CFLAGS $(LIBPERF_PC)
-	$(Q)$(MAKE) -C tests clean
-
-tests: libs
-	$(Q)$(MAKE) -C tests
-	$(Q)$(MAKE) -C tests run
-
-$(LIBPERF_PC):
-	$(QUIET_GEN)sed -e "s|@PREFIX@|$(prefix)|" \
-		-e "s|@LIBDIR@|$(libdir_SQ)|" \
-		-e "s|@VERSION@|$(VERSION)|" \
-		< libperf.pc.template > $@
-
-define do_install_mkdir
-	if [ ! -d '$(DESTDIR_SQ)$1' ]; then             \
-		$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1'; \
-	fi
-endef
-
-define do_install
-	if [ ! -d '$(DESTDIR_SQ)$2' ]; then             \
-		$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$2'; \
-	fi;                                             \
-	$(INSTALL) $1 $(if $3,-m $3,) '$(DESTDIR_SQ)$2'
-endef
-
-install_lib: libs
-	$(call QUIET_INSTALL, $(LIBPERF_ALL)) \
-		$(call do_install_mkdir,$(libdir_SQ)); \
-		cp -fpR $(LIBPERF_ALL) $(DESTDIR)$(libdir_SQ)
-
-install_headers:
-	$(call QUIET_INSTALL, headers) \
-		$(call do_install,include/perf/core.h,$(prefix)/include/perf,644); \
-		$(call do_install,include/perf/cpumap.h,$(prefix)/include/perf,644); \
-		$(call do_install,include/perf/threadmap.h,$(prefix)/include/perf,644); \
-		$(call do_install,include/perf/evlist.h,$(prefix)/include/perf,644); \
-		$(call do_install,include/perf/evsel.h,$(prefix)/include/perf,644); \
-		$(call do_install,include/perf/event.h,$(prefix)/include/perf,644); \
-		$(call do_install,include/perf/mmap.h,$(prefix)/include/perf,644);
-
-install_pkgconfig: $(LIBPERF_PC)
-	$(call QUIET_INSTALL, $(LIBPERF_PC)) \
-		$(call do_install,$(LIBPERF_PC),$(libdir_SQ)/pkgconfig,644)
-
-install: install_lib install_headers install_pkgconfig
-
-FORCE:
-
-.PHONY: all install clean tests FORCE
diff --git a/tools/perf/lib/core.c b/tools/perf/lib/core.c
deleted file mode 100644
index 58fc894b76c5..000000000000
--- a/tools/perf/lib/core.c
+++ /dev/null
@@ -1,38 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-
-#define __printf(a, b)  __attribute__((format(printf, a, b)))
-
-#include <stdio.h>
-#include <stdarg.h>
-#include <unistd.h>
-#include <linux/compiler.h>
-#include <perf/core.h>
-#include <internal/lib.h>
-#include "internal.h"
-
-static int __base_pr(enum libperf_print_level level __maybe_unused, const char *format,
-		     va_list args)
-{
-	return vfprintf(stderr, format, args);
-}
-
-static libperf_print_fn_t __libperf_pr = __base_pr;
-
-__printf(2, 3)
-void libperf_print(enum libperf_print_level level, const char *format, ...)
-{
-	va_list args;
-
-	if (!__libperf_pr)
-		return;
-
-	va_start(args, format);
-	__libperf_pr(level, format, args);
-	va_end(args);
-}
-
-void libperf_init(libperf_print_fn_t fn)
-{
-	page_size = sysconf(_SC_PAGE_SIZE);
-	__libperf_pr = fn;
-}
diff --git a/tools/perf/lib/cpumap.c b/tools/perf/lib/cpumap.c
deleted file mode 100644
index f93f4e703e4c..000000000000
--- a/tools/perf/lib/cpumap.c
+++ /dev/null
@@ -1,345 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-#include <perf/cpumap.h>
-#include <stdlib.h>
-#include <linux/refcount.h>
-#include <internal/cpumap.h>
-#include <asm/bug.h>
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-#include <ctype.h>
-#include <limits.h>
-
-struct perf_cpu_map *perf_cpu_map__dummy_new(void)
-{
-	struct perf_cpu_map *cpus = malloc(sizeof(*cpus) + sizeof(int));
-
-	if (cpus != NULL) {
-		cpus->nr = 1;
-		cpus->map[0] = -1;
-		refcount_set(&cpus->refcnt, 1);
-	}
-
-	return cpus;
-}
-
-static void cpu_map__delete(struct perf_cpu_map *map)
-{
-	if (map) {
-		WARN_ONCE(refcount_read(&map->refcnt) != 0,
-			  "cpu_map refcnt unbalanced\n");
-		free(map);
-	}
-}
-
-struct perf_cpu_map *perf_cpu_map__get(struct perf_cpu_map *map)
-{
-	if (map)
-		refcount_inc(&map->refcnt);
-	return map;
-}
-
-void perf_cpu_map__put(struct perf_cpu_map *map)
-{
-	if (map && refcount_dec_and_test(&map->refcnt))
-		cpu_map__delete(map);
-}
-
-static struct perf_cpu_map *cpu_map__default_new(void)
-{
-	struct perf_cpu_map *cpus;
-	int nr_cpus;
-
-	nr_cpus = sysconf(_SC_NPROCESSORS_ONLN);
-	if (nr_cpus < 0)
-		return NULL;
-
-	cpus = malloc(sizeof(*cpus) + nr_cpus * sizeof(int));
-	if (cpus != NULL) {
-		int i;
-
-		for (i = 0; i < nr_cpus; ++i)
-			cpus->map[i] = i;
-
-		cpus->nr = nr_cpus;
-		refcount_set(&cpus->refcnt, 1);
-	}
-
-	return cpus;
-}
-
-static int cmp_int(const void *a, const void *b)
-{
-	return *(const int *)a - *(const int*)b;
-}
-
-static struct perf_cpu_map *cpu_map__trim_new(int nr_cpus, int *tmp_cpus)
-{
-	size_t payload_size = nr_cpus * sizeof(int);
-	struct perf_cpu_map *cpus = malloc(sizeof(*cpus) + payload_size);
-	int i, j;
-
-	if (cpus != NULL) {
-		memcpy(cpus->map, tmp_cpus, payload_size);
-		qsort(cpus->map, nr_cpus, sizeof(int), cmp_int);
-		/* Remove dups */
-		j = 0;
-		for (i = 0; i < nr_cpus; i++) {
-			if (i == 0 || cpus->map[i] != cpus->map[i - 1])
-				cpus->map[j++] = cpus->map[i];
-		}
-		cpus->nr = j;
-		assert(j <= nr_cpus);
-		refcount_set(&cpus->refcnt, 1);
-	}
-
-	return cpus;
-}
-
-struct perf_cpu_map *perf_cpu_map__read(FILE *file)
-{
-	struct perf_cpu_map *cpus = NULL;
-	int nr_cpus = 0;
-	int *tmp_cpus = NULL, *tmp;
-	int max_entries = 0;
-	int n, cpu, prev;
-	char sep;
-
-	sep = 0;
-	prev = -1;
-	for (;;) {
-		n = fscanf(file, "%u%c", &cpu, &sep);
-		if (n <= 0)
-			break;
-		if (prev >= 0) {
-			int new_max = nr_cpus + cpu - prev - 1;
-
-			WARN_ONCE(new_max >= MAX_NR_CPUS, "Perf can support %d CPUs. "
-							  "Consider raising MAX_NR_CPUS\n", MAX_NR_CPUS);
-
-			if (new_max >= max_entries) {
-				max_entries = new_max + MAX_NR_CPUS / 2;
-				tmp = realloc(tmp_cpus, max_entries * sizeof(int));
-				if (tmp == NULL)
-					goto out_free_tmp;
-				tmp_cpus = tmp;
-			}
-
-			while (++prev < cpu)
-				tmp_cpus[nr_cpus++] = prev;
-		}
-		if (nr_cpus == max_entries) {
-			max_entries += MAX_NR_CPUS;
-			tmp = realloc(tmp_cpus, max_entries * sizeof(int));
-			if (tmp == NULL)
-				goto out_free_tmp;
-			tmp_cpus = tmp;
-		}
-
-		tmp_cpus[nr_cpus++] = cpu;
-		if (n == 2 && sep == '-')
-			prev = cpu;
-		else
-			prev = -1;
-		if (n == 1 || sep == '\n')
-			break;
-	}
-
-	if (nr_cpus > 0)
-		cpus = cpu_map__trim_new(nr_cpus, tmp_cpus);
-	else
-		cpus = cpu_map__default_new();
-out_free_tmp:
-	free(tmp_cpus);
-	return cpus;
-}
-
-static struct perf_cpu_map *cpu_map__read_all_cpu_map(void)
-{
-	struct perf_cpu_map *cpus = NULL;
-	FILE *onlnf;
-
-	onlnf = fopen("/sys/devices/system/cpu/online", "r");
-	if (!onlnf)
-		return cpu_map__default_new();
-
-	cpus = perf_cpu_map__read(onlnf);
-	fclose(onlnf);
-	return cpus;
-}
-
-struct perf_cpu_map *perf_cpu_map__new(const char *cpu_list)
-{
-	struct perf_cpu_map *cpus = NULL;
-	unsigned long start_cpu, end_cpu = 0;
-	char *p = NULL;
-	int i, nr_cpus = 0;
-	int *tmp_cpus = NULL, *tmp;
-	int max_entries = 0;
-
-	if (!cpu_list)
-		return cpu_map__read_all_cpu_map();
-
-	/*
-	 * must handle the case of empty cpumap to cover
-	 * TOPOLOGY header for NUMA nodes with no CPU
-	 * ( e.g., because of CPU hotplug)
-	 */
-	if (!isdigit(*cpu_list) && *cpu_list != '\0')
-		goto out;
-
-	while (isdigit(*cpu_list)) {
-		p = NULL;
-		start_cpu = strtoul(cpu_list, &p, 0);
-		if (start_cpu >= INT_MAX
-		    || (*p != '\0' && *p != ',' && *p != '-'))
-			goto invalid;
-
-		if (*p == '-') {
-			cpu_list = ++p;
-			p = NULL;
-			end_cpu = strtoul(cpu_list, &p, 0);
-
-			if (end_cpu >= INT_MAX || (*p != '\0' && *p != ','))
-				goto invalid;
-
-			if (end_cpu < start_cpu)
-				goto invalid;
-		} else {
-			end_cpu = start_cpu;
-		}
-
-		WARN_ONCE(end_cpu >= MAX_NR_CPUS, "Perf can support %d CPUs. "
-						  "Consider raising MAX_NR_CPUS\n", MAX_NR_CPUS);
-
-		for (; start_cpu <= end_cpu; start_cpu++) {
-			/* check for duplicates */
-			for (i = 0; i < nr_cpus; i++)
-				if (tmp_cpus[i] == (int)start_cpu)
-					goto invalid;
-
-			if (nr_cpus == max_entries) {
-				max_entries += MAX_NR_CPUS;
-				tmp = realloc(tmp_cpus, max_entries * sizeof(int));
-				if (tmp == NULL)
-					goto invalid;
-				tmp_cpus = tmp;
-			}
-			tmp_cpus[nr_cpus++] = (int)start_cpu;
-		}
-		if (*p)
-			++p;
-
-		cpu_list = p;
-	}
-
-	if (nr_cpus > 0)
-		cpus = cpu_map__trim_new(nr_cpus, tmp_cpus);
-	else if (*cpu_list != '\0')
-		cpus = cpu_map__default_new();
-	else
-		cpus = perf_cpu_map__dummy_new();
-invalid:
-	free(tmp_cpus);
-out:
-	return cpus;
-}
-
-int perf_cpu_map__cpu(const struct perf_cpu_map *cpus, int idx)
-{
-	if (idx < cpus->nr)
-		return cpus->map[idx];
-
-	return -1;
-}
-
-int perf_cpu_map__nr(const struct perf_cpu_map *cpus)
-{
-	return cpus ? cpus->nr : 1;
-}
-
-bool perf_cpu_map__empty(const struct perf_cpu_map *map)
-{
-	return map ? map->map[0] == -1 : true;
-}
-
-int perf_cpu_map__idx(struct perf_cpu_map *cpus, int cpu)
-{
-	int i;
-
-	for (i = 0; i < cpus->nr; ++i) {
-		if (cpus->map[i] == cpu)
-			return i;
-	}
-
-	return -1;
-}
-
-int perf_cpu_map__max(struct perf_cpu_map *map)
-{
-	int i, max = -1;
-
-	for (i = 0; i < map->nr; i++) {
-		if (map->map[i] > max)
-			max = map->map[i];
-	}
-
-	return max;
-}
-
-/*
- * Merge two cpumaps
- *
- * orig either gets freed and replaced with a new map, or reused
- * with no reference count change (similar to "realloc")
- * other has its reference count increased.
- */
-
-struct perf_cpu_map *perf_cpu_map__merge(struct perf_cpu_map *orig,
-					 struct perf_cpu_map *other)
-{
-	int *tmp_cpus;
-	int tmp_len;
-	int i, j, k;
-	struct perf_cpu_map *merged;
-
-	if (!orig && !other)
-		return NULL;
-	if (!orig) {
-		perf_cpu_map__get(other);
-		return other;