v4.19.13 snapshot.
diff --git a/tools/perf/util/bpf-loader.h b/tools/perf/util/bpf-loader.h
new file mode 100644
index 0000000..62d245a
--- /dev/null
+++ b/tools/perf/util/bpf-loader.h
@@ -0,0 +1,214 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2015, Wang Nan <wangnan0@huawei.com>
+ * Copyright (C) 2015, Huawei Inc.
+ */
+#ifndef __BPF_LOADER_H
+#define __BPF_LOADER_H
+
+#include <linux/compiler.h>
+#include <linux/err.h>
+#include <string.h>
+#include <bpf/libbpf.h>
+#include "probe-event.h"
+#include "evlist.h"
+#include "debug.h"
+
+enum bpf_loader_errno {
+ __BPF_LOADER_ERRNO__START = __LIBBPF_ERRNO__START - 100,
+ /* Invalid config string */
+ BPF_LOADER_ERRNO__CONFIG = __BPF_LOADER_ERRNO__START,
+ BPF_LOADER_ERRNO__GROUP, /* Invalid group name */
+ BPF_LOADER_ERRNO__EVENTNAME, /* Event name is missing */
+ BPF_LOADER_ERRNO__INTERNAL, /* BPF loader internal error */
+ BPF_LOADER_ERRNO__COMPILE, /* Error when compiling BPF scriptlet */
+ BPF_LOADER_ERRNO__PROGCONF_TERM,/* Invalid program config term in config string */
+ BPF_LOADER_ERRNO__PROLOGUE, /* Failed to generate prologue */
+ BPF_LOADER_ERRNO__PROLOGUE2BIG, /* Prologue too big for program */
+ BPF_LOADER_ERRNO__PROLOGUEOOB, /* Offset out of bound for prologue */
+ BPF_LOADER_ERRNO__OBJCONF_OPT, /* Invalid object config option */
+ BPF_LOADER_ERRNO__OBJCONF_CONF, /* Config value not set (lost '=')) */
+ BPF_LOADER_ERRNO__OBJCONF_MAP_OPT, /* Invalid object map config option */
+ BPF_LOADER_ERRNO__OBJCONF_MAP_NOTEXIST, /* Target map not exist */
+ BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE, /* Incorrect value type for map */
+ BPF_LOADER_ERRNO__OBJCONF_MAP_TYPE, /* Incorrect map type */
+ BPF_LOADER_ERRNO__OBJCONF_MAP_KEYSIZE, /* Incorrect map key size */
+ BPF_LOADER_ERRNO__OBJCONF_MAP_VALUESIZE,/* Incorrect map value size */
+ BPF_LOADER_ERRNO__OBJCONF_MAP_NOEVT, /* Event not found for map setting */
+ BPF_LOADER_ERRNO__OBJCONF_MAP_MAPSIZE, /* Invalid map size for event setting */
+ BPF_LOADER_ERRNO__OBJCONF_MAP_EVTDIM, /* Event dimension too large */
+ BPF_LOADER_ERRNO__OBJCONF_MAP_EVTINH, /* Doesn't support inherit event */
+ BPF_LOADER_ERRNO__OBJCONF_MAP_EVTTYPE, /* Wrong event type for map */
+ BPF_LOADER_ERRNO__OBJCONF_MAP_IDX2BIG, /* Index too large */
+ __BPF_LOADER_ERRNO__END,
+};
+
+struct perf_evsel;
+struct bpf_object;
+struct parse_events_term;
+#define PERF_BPF_PROBE_GROUP "perf_bpf_probe"
+
+typedef int (*bpf_prog_iter_callback_t)(const char *group, const char *event,
+ int fd, void *arg);
+
+#ifdef HAVE_LIBBPF_SUPPORT
+struct bpf_object *bpf__prepare_load(const char *filename, bool source);
+int bpf__strerror_prepare_load(const char *filename, bool source,
+ int err, char *buf, size_t size);
+
+struct bpf_object *bpf__prepare_load_buffer(void *obj_buf, size_t obj_buf_sz,
+ const char *name);
+
+void bpf__clear(void);
+
+int bpf__probe(struct bpf_object *obj);
+int bpf__unprobe(struct bpf_object *obj);
+int bpf__strerror_probe(struct bpf_object *obj, int err,
+ char *buf, size_t size);
+
+int bpf__load(struct bpf_object *obj);
+int bpf__strerror_load(struct bpf_object *obj, int err,
+ char *buf, size_t size);
+int bpf__foreach_event(struct bpf_object *obj,
+ bpf_prog_iter_callback_t func, void *arg);
+
+int bpf__config_obj(struct bpf_object *obj, struct parse_events_term *term,
+ struct perf_evlist *evlist, int *error_pos);
+int bpf__strerror_config_obj(struct bpf_object *obj,
+ struct parse_events_term *term,
+ struct perf_evlist *evlist,
+ int *error_pos, int err, char *buf,
+ size_t size);
+int bpf__apply_obj_config(void);
+int bpf__strerror_apply_obj_config(int err, char *buf, size_t size);
+
+int bpf__setup_stdout(struct perf_evlist *evlist);
+struct perf_evsel *bpf__setup_output_event(struct perf_evlist *evlist, const char *name);
+int bpf__strerror_setup_output_event(struct perf_evlist *evlist, int err, char *buf, size_t size);
+#else
+#include <errno.h>
+
+static inline struct bpf_object *
+bpf__prepare_load(const char *filename __maybe_unused,
+ bool source __maybe_unused)
+{
+ pr_debug("ERROR: eBPF object loading is disabled during compiling.\n");
+ return ERR_PTR(-ENOTSUP);
+}
+
+static inline struct bpf_object *
+bpf__prepare_load_buffer(void *obj_buf __maybe_unused,
+ size_t obj_buf_sz __maybe_unused)
+{
+ return ERR_PTR(-ENOTSUP);
+}
+
+static inline void bpf__clear(void) { }
+
+static inline int bpf__probe(struct bpf_object *obj __maybe_unused) { return 0;}
+static inline int bpf__unprobe(struct bpf_object *obj __maybe_unused) { return 0;}
+static inline int bpf__load(struct bpf_object *obj __maybe_unused) { return 0; }
+
+static inline int
+bpf__foreach_event(struct bpf_object *obj __maybe_unused,
+ bpf_prog_iter_callback_t func __maybe_unused,
+ void *arg __maybe_unused)
+{
+ return 0;
+}
+
+static inline int
+bpf__config_obj(struct bpf_object *obj __maybe_unused,
+ struct parse_events_term *term __maybe_unused,
+ struct perf_evlist *evlist __maybe_unused,
+ int *error_pos __maybe_unused)
+{
+ return 0;
+}
+
+static inline int
+bpf__apply_obj_config(void)
+{
+ return 0;
+}
+
+static inline int
+bpf__setup_stdout(struct perf_evlist *evlist __maybe_unused)
+{
+ return 0;
+}
+
+static inline struct perf_evsel *
+bpf__setup_output_event(struct perf_evlist *evlist __maybe_unused, const char *name __maybe_unused)
+{
+ return NULL;
+}
+
+static inline int
+__bpf_strerror(char *buf, size_t size)
+{
+ if (!size)
+ return 0;
+ strncpy(buf,
+ "ERROR: eBPF object loading is disabled during compiling.\n",
+ size);
+ buf[size - 1] = '\0';
+ return 0;
+}
+
+static inline
+int bpf__strerror_prepare_load(const char *filename __maybe_unused,
+ bool source __maybe_unused,
+ int err __maybe_unused,
+ char *buf, size_t size)
+{
+ return __bpf_strerror(buf, size);
+}
+
+static inline int
+bpf__strerror_probe(struct bpf_object *obj __maybe_unused,
+ int err __maybe_unused,
+ char *buf, size_t size)
+{
+ return __bpf_strerror(buf, size);
+}
+
+static inline int bpf__strerror_load(struct bpf_object *obj __maybe_unused,
+ int err __maybe_unused,
+ char *buf, size_t size)
+{
+ return __bpf_strerror(buf, size);
+}
+
+static inline int
+bpf__strerror_config_obj(struct bpf_object *obj __maybe_unused,
+ struct parse_events_term *term __maybe_unused,
+ struct perf_evlist *evlist __maybe_unused,
+ int *error_pos __maybe_unused,
+ int err __maybe_unused,
+ char *buf, size_t size)
+{
+ return __bpf_strerror(buf, size);
+}
+
+static inline int
+bpf__strerror_apply_obj_config(int err __maybe_unused,
+ char *buf, size_t size)
+{
+ return __bpf_strerror(buf, size);
+}
+
+static inline int
+bpf__strerror_setup_output_event(struct perf_evlist *evlist __maybe_unused,
+ int err __maybe_unused, char *buf, size_t size)
+{
+ return __bpf_strerror(buf, size);
+}
+
+#endif
+
+static inline int bpf__strerror_setup_stdout(struct perf_evlist *evlist, int err, char *buf, size_t size)
+{
+ return bpf__strerror_setup_output_event(evlist, err, buf, size);
+}
+#endif