Merge tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-tracegrafted

Pull tracing fixes from Steven Rostedt:

 - Fix error output of boot instance creation failure

   Currently if a boot instance creation fails, instead of printing out
   the name of the instance that failed, it prints "(null)". That is
   because it prints "cur_str" that had already been processed by
   strsep(). Print the saved name instead.

   While at it, print the error code of the failure.

 - Fix use-after-free for same named historgrams

   Histograms can be named so that they can be used in multiple events.
   But if the named histogram has a variable attached, the second event
   that uses the named histogram which duplicates it and needs to free
   the original after duplication leaves the old variable in place and
   still visible. If another histogram uses than variable, it will use
   the stale one which will try to reference the freed duplicate
   histogram and crash the kernel.

   Free the duplicate variables along with the duplicated histogram
   data.

 - Check return value of kthread_run() in event self test

   The events self tests uses a kthread for testing but does not check
   if it succeeded in creating a kthread. If the kthread creation were
   to fail, the code will still try to call kthread_stop() on the error
   returned.

 - Fix race between reading trace_pipe and updating subbuffer size

   If a user is reading the trace_pipe file at the same time they update
   the ring buffer sub-buffer size, can cause the trace_pipe read to
   read stale data. Add trace_access_lock() around updating the ring
   buffer sub-buffer size.

 - Fix eventfs_inode on failure path in creation of the events directory

   In the creation of the "events" directory, if after allocating the
   eventfs_inode a failure is detected, it calls cleanup_ei() which
   calls free_ei(). The free_ei() will test if eventfs_inode being freed
   has no children. It is a bug if it does. But on the failure case of
   the creation of the "events" directory, the children lists have not
   yet been initialized and the free will trigger a warning because
   list_empty() on an uninitialized list returns false.

   Move the initialization into init_ei() where it makes more sense and
   makes sure that a created eventfs_inode has its lists initialized
   upon creation.

 - Check return value of kthread_run() in ftrace direct sample code

   The sample code that shows how to use the ftrace direct calls does
   not test the return of kthread_run() to see if it succeeds. Return a
   failure if the kthread_run() doesn't succeed.

 - Clear user events state on fork in case of alloc failure

   On fork, the child gets a pointer to the parent's user events state.
   It makes a copy of it then updates the child's pointer to it. But if
   the allocation fails, the duplication function leaves the child with
   a pointer to its parent's descriptor. When the child cleans up its
   data, it will free the parent's descriptor while the parent is still
   using it.

   In the duplication function, set the child's user_event_mm to NULL
   before testing if the allocation succeeded, and when it exits it will
   not free the parent's descriptor.

 - Fix retry exhaustion in simple ring buffer reader swap

   simple_ring_buffer_swap_reader_page() starts with retry set to 8 and
   post-decrements it only after a failed link replacement. On the final
   attempt, a successful replacement leaves retry at zero, while a
   failed replacement leaves it at -1.

   But the check for success expects the retry value to be non-zero and
   exits with an error on zero. This is the opposite result. Fix it.

 - Fail nicely when the remote swap_reader_page() returns an error

   Currently, if the swap_reader_page() of a remote buffer fails, it
   triggers a WARN_ON_ONCE() and continues normally. Instead, have it
   exit with an error and a pr_warn() print instead of a full WARNING.

* tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  ring-buffer: Stop remote reader update when page swap fails
  tracing: Fix retry exhaustion in simple ring buffer reader swap
  tracing/user_events: Clear copied tracing state before fork duplication
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-multi-modify
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-modify
  eventfs: Initialize ei->children and ei->list in init_ei()
  tracing: Fix use-after-free in trace_pipe read on sub-buffer order change
  tracing: Fix crash passing ERR_PTR to kthread_stop()
  tracing: Fix use-after-free with same-name named triggers
  tracing: Fix logged instance name on creation failure

1 files changed, 572 insertions, 0 deletions

diff --git a/tools/perf/util/tool.c b/tools/perf/util/tool.c
new file mode 100644
index 000000000..25c9b378a
--- /dev/null
+++ b/tools/perf/util/tool.c
@@ -0,0 +1,572 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "data.h"
+#include "debug.h"
+#include "event.h"
+#include "header.h"
+#include "session.h"
+#include "stat.h"
+#include "tool.h"
+#include "tsc.h"
+#include <linux/compiler.h>
+#include <sys/mman.h>
+#include <stddef.h>
+#include <unistd.h>
+
+#ifdef HAVE_ZSTD_SUPPORT
+static int perf_session__process_compressed_event(const struct perf_tool *tool __maybe_unused,
+						  struct perf_session *session,
+						  union perf_event *event, u64 file_offset,
+						  const char *file_path)
+{
+	void *src;
+	size_t decomp_size, src_size;
+	u64 decomp_last_rem = 0;
+	size_t mmap_len, decomp_len = perf_session__env(session)->comp_mmap_len;
+	struct decomp *decomp, *decomp_last = session->active_decomp->decomp_last;
+
+	if (!decomp_len) {
+		pr_err("Compressed events found but HEADER_COMPRESSED not set\n");
+		return -1;
+	}
+
+	if (decomp_last) {
+		/* Prevent u64 underflow in decomp_last_rem */
+		if (decomp_last->head > decomp_last->size)
+			return -1;
+		decomp_last_rem = decomp_last->size - decomp_last->head;
+		/*
+		 * Check before adding: on 32-bit, size_t += u64
+		 * silently truncates, bypassing the overflow check
+		 * below and producing an undersized buffer.
+		 */
+		if (decomp_last_rem > SIZE_MAX - decomp_len - sizeof(struct decomp)) {
+			pr_err("Decompression buffer size overflow\n");
+			return -1;
+		}
+		decomp_len += decomp_last_rem;
+	}
+
+	if (decomp_len > SIZE_MAX - sizeof(struct decomp)) {
+		pr_err("Decompression buffer size overflow\n");
+		return -1;
+	}
+	mmap_len = sizeof(struct decomp) + decomp_len;
+	decomp = mmap(NULL, mmap_len, PROT_READ|PROT_WRITE,
+		      MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
+	if (decomp == MAP_FAILED) {
+		pr_err("Couldn't allocate memory for decompression\n");
+		return -1;
+	}
+
+	decomp->file_pos = file_offset;
+	decomp->file_path = file_path;
+	decomp->mmap_len = mmap_len;
+	decomp->head = 0;
+
+	if (decomp_last_rem) {
+		memcpy(decomp->data, &(decomp_last->data[decomp_last->head]), decomp_last_rem);
+		decomp->size = decomp_last_rem;
+	}
+
+	/*
+	 * Events are read directly from the mmap'd file; fields could
+	 * theoretically change via a FUSE-backed file, but that applies
+	 * to the entire event processing pipeline, not just here.
+	 */
+	if (event->header.type == PERF_RECORD_COMPRESSED) {
+		if (event->header.size < sizeof(struct perf_record_compressed))
+			goto err_decomp;
+		src = (void *)event + sizeof(struct perf_record_compressed);
+		src_size = event->pack.header.size - sizeof(struct perf_record_compressed);
+	} else if (event->header.type == PERF_RECORD_COMPRESSED2) {
+		/*
+		 * prefetch_event() only guarantees that the 8-byte
+		 * event header fits; validate that header.size covers
+		 * the data_size field before accessing it, otherwise a
+		 * crafted event reads data_size from adjacent memory.
+		 */
+		if (event->header.size < sizeof(struct perf_record_compressed2))
+			goto err_decomp;
+		src = (void *)event + sizeof(struct perf_record_compressed2);
+		src_size = event->pack2.data_size;
+		/*
+		 * data_size is independent of header.size (which
+		 * includes padding); verify it doesn't exceed the
+		 * actual payload to prevent out-of-bounds reads in
+		 * zstd_decompress_stream().
+		 */
+		if (src_size > event->header.size - sizeof(struct perf_record_compressed2))
+			goto err_decomp;
+	} else {
+		goto err_decomp;
+	}
+
+	decomp_size = zstd_decompress_stream(session->active_decomp->zstd_decomp, src, src_size,
+				&(decomp->data[decomp_last_rem]), decomp_len - decomp_last_rem);
+	if (!decomp_size) {
+		munmap(decomp, mmap_len);
+		pr_err("Couldn't decompress data\n");
+		return -1;
+	}
+
+	decomp->size += decomp_size;
+
+	if (session->active_decomp->decomp == NULL)
+		session->active_decomp->decomp = decomp;
+	else
+		session->active_decomp->decomp_last->next = decomp;
+
+	session->active_decomp->decomp_last = decomp;
+
+	pr_debug("decomp (B): %zd to %zd\n", src_size, decomp_size);
+
+	return 0;
+
+err_decomp:
+	munmap(decomp, mmap_len);
+	pr_err("Couldn't decompress data\n");
+	return -1;
+}
+#endif
+
+static int process_event_synth_tracing_data_stub(const struct perf_tool *tool __maybe_unused,
+						 struct perf_session *session __maybe_unused,
+						 union perf_event *event __maybe_unused)
+{
+	dump_printf(": unhandled!\n");
+	return 0;
+}
+
+static int process_event_synth_attr_stub(const struct perf_tool *tool __maybe_unused,
+					 union perf_event *event __maybe_unused,
+					 struct evlist **pevlist __maybe_unused)
+{
+	dump_printf(": unhandled!\n");
+	return 0;
+}
+
+static int process_event_synth_event_update_stub(const struct perf_tool *tool __maybe_unused,
+						 union perf_event *event __maybe_unused,
+						 struct evlist **pevlist __maybe_unused)
+{
+	if (dump_trace)
+		perf_event__fprintf_event_update(event, stdout);
+
+	dump_printf(": unhandled!\n");
+	return 0;
+}
+
+int process_event_sample_stub(const struct perf_tool *tool __maybe_unused,
+			      union perf_event *event __maybe_unused,
+			      struct perf_sample *sample __maybe_unused,
+			      struct machine *machine __maybe_unused)
+{
+	dump_printf(": unhandled!\n");
+	return 0;
+}
+
+static int process_event_stub(const struct perf_tool *tool __maybe_unused,
+			      union perf_event *event __maybe_unused,
+			      struct perf_sample *sample __maybe_unused,
+			      struct machine *machine __maybe_unused)
+{
+	dump_printf(": unhandled!\n");
+	return 0;
+}
+
+static int process_finished_round_stub(const struct perf_tool *tool __maybe_unused,
+				       union perf_event *event __maybe_unused,
+				       struct ordered_events *oe __maybe_unused)
+{
+	dump_printf(": unhandled!\n");
+	return 0;
+}
+
+static int skipn(int fd, off_t n)
+{
+	char buf[4096];
+	ssize_t ret;
+
+	while (n > 0) {
+		ret = read(fd, buf, min(n, (off_t)sizeof(buf)));
+		if (ret <= 0)
+			return ret;
+		n -= ret;
+	}
+
+	return 0;
+}
+
+static s64 process_event_auxtrace_stub(const struct perf_tool *tool __maybe_unused,
+				       struct perf_session *session __maybe_unused,
+				       union perf_event *event)
+{
+	dump_printf(": unhandled!\n");
+	if (perf_data__is_pipe(session->data))
+		skipn(perf_data__fd(session->data), event->auxtrace.size);
+	return event->auxtrace.size;
+}
+
+static int process_event_op2_stub(const struct perf_tool *tool __maybe_unused,
+				  struct perf_session *session __maybe_unused,
+				  union perf_event *event __maybe_unused)
+{
+	dump_printf(": unhandled!\n");
+	return 0;
+}
+
+
+static
+int process_event_thread_map_stub(const struct perf_tool *tool __maybe_unused,
+				  struct perf_session *session __maybe_unused,
+				  union perf_event *event __maybe_unused)
+{
+	if (dump_trace)
+		perf_event__fprintf_thread_map(event, stdout);
+
+	dump_printf(": unhandled!\n");
+	return 0;
+}
+
+static
+int process_event_cpu_map_stub(const struct perf_tool *tool __maybe_unused,
+			       struct perf_session *session __maybe_unused,
+			       union perf_event *event __maybe_unused)
+{
+	if (dump_trace)
+		perf_event__fprintf_cpu_map(event, stdout);
+
+	dump_printf(": unhandled!\n");
+	return 0;
+}
+
+static
+int process_event_stat_config_stub(const struct perf_tool *tool __maybe_unused,
+				   struct perf_session *session __maybe_unused,
+				   union perf_event *event __maybe_unused)
+{
+	if (dump_trace)
+		perf_event__fprintf_stat_config(event, stdout);
+
+	dump_printf(": unhandled!\n");
+	return 0;
+}
+
+static int process_stat_stub(const struct perf_tool *tool __maybe_unused,
+			     struct perf_session *perf_session __maybe_unused,
+			     union perf_event *event)
+{
+	if (dump_trace)
+		perf_event__fprintf_stat(event, stdout);
+
+	dump_printf(": unhandled!\n");
+	return 0;
+}
+
+static int process_stat_round_stub(const struct perf_tool *tool __maybe_unused,
+				   struct perf_session *perf_session __maybe_unused,
+				   union perf_event *event)
+{
+	if (dump_trace)
+		perf_event__fprintf_stat_round(event, stdout);
+
+	dump_printf(": unhandled!\n");
+	return 0;
+}
+
+static int process_event_time_conv_stub(const struct perf_tool *tool __maybe_unused,
+					struct perf_session *perf_session __maybe_unused,
+					union perf_event *event)
+{
+	if (dump_trace)
+		perf_event__fprintf_time_conv(event, stdout);
+
+	dump_printf(": unhandled!\n");
+	return 0;
+}
+
+static int perf_session__process_compressed_event_stub(const struct perf_tool *tool __maybe_unused,
+						       struct perf_session *session __maybe_unused,
+						       union perf_event *event __maybe_unused,
+						       u64 file_offset __maybe_unused,
+						       const char *file_path __maybe_unused)
+{
+	dump_printf(": unhandled!\n");
+	return 0;
+}
+
+static int perf_event__process_bpf_metadata_stub(const struct perf_tool *tool __maybe_unused,
+						 struct perf_session *perf_session __maybe_unused,
+						 union perf_event *event)
+{
+	if (dump_trace)
+		perf_event__fprintf_bpf_metadata(event, stdout);
+	dump_printf(": unhandled!\n");
+	return 0;
+}
+static int process_schedstat_cpu_stub(const struct perf_tool *tool __maybe_unused,
+				      struct perf_session *perf_session __maybe_unused,
+				      union perf_event *event)
+{
+	if (dump_trace)
+		perf_event__fprintf_schedstat_cpu(event, stdout);
+	dump_printf(": unhandled!\n");
+	return 0;
+}
+
+static int process_schedstat_domain_stub(const struct perf_tool *tool __maybe_unused,
+					 struct perf_session *perf_session __maybe_unused,
+					 union perf_event *event)
+{
+	if (dump_trace)
+		perf_event__fprintf_schedstat_domain(event, stdout);
+	dump_printf(": unhandled!\n");
+	return 0;
+}
+
+void perf_tool__init(struct perf_tool *tool, bool ordered_events)
+{
+	tool->ordered_events = ordered_events;
+	tool->ordering_requires_timestamps = false;
+	tool->namespace_events = false;
+	tool->cgroup_events = false;
+	tool->no_warn = false;
+	tool->show_feat_hdr = SHOW_FEAT_NO_HEADER;
+	tool->merge_deferred_callchains = true;
+	tool->dont_split_sample_group = false;
+
+	tool->sample = process_event_sample_stub;
+	tool->mmap = process_event_stub;
+	tool->mmap2 = process_event_stub;
+	tool->comm = process_event_stub;
+	tool->namespaces = process_event_stub;
+	tool->cgroup = process_event_stub;
+	tool->fork = process_event_stub;
+	tool->exit = process_event_stub;
+	tool->lost = perf_event__process_lost;
+	tool->lost_samples = perf_event__process_lost_samples;
+	tool->aux = perf_event__process_aux;
+	tool->itrace_start = perf_event__process_itrace_start;
+	tool->context_switch = perf_event__process_switch;
+	tool->ksymbol = perf_event__process_ksymbol;
+	tool->bpf = perf_event__process_bpf;
+	tool->text_poke = perf_event__process_text_poke;
+	tool->aux_output_hw_id = perf_event__process_aux_output_hw_id;
+	tool->read = process_event_sample_stub;
+	tool->throttle = process_event_stub;
+	tool->unthrottle = process_event_stub;
+	tool->callchain_deferred = process_event_sample_stub;
+	tool->attr = process_event_synth_attr_stub;
+	tool->event_update = process_event_synth_event_update_stub;
+	tool->tracing_data = process_event_synth_tracing_data_stub;
+	tool->build_id = process_event_op2_stub;
+
+	if (ordered_events)
+		tool->finished_round = perf_event__process_finished_round;
+	else
+		tool->finished_round = process_finished_round_stub;
+
+	tool->id_index = process_event_op2_stub;
+	tool->auxtrace_info = process_event_op2_stub;
+	tool->auxtrace = process_event_auxtrace_stub;
+	tool->auxtrace_error = process_event_op2_stub;
+	tool->thread_map = process_event_thread_map_stub;
+	tool->cpu_map = process_event_cpu_map_stub;
+	tool->stat_config = process_event_stat_config_stub;
+	tool->stat = process_stat_stub;
+	tool->stat_round = process_stat_round_stub;
+	tool->time_conv = process_event_time_conv_stub;
+	tool->feature = process_event_op2_stub;
+#ifdef HAVE_ZSTD_SUPPORT
+	tool->compressed = perf_session__process_compressed_event;
+#else
+	tool->compressed = perf_session__process_compressed_event_stub;
+#endif
+	tool->finished_init = process_event_op2_stub;
+	tool->bpf_metadata = perf_event__process_bpf_metadata_stub;
+	tool->schedstat_cpu = process_schedstat_cpu_stub;
+	tool->schedstat_domain = process_schedstat_domain_stub;
+}
+
+bool perf_tool__compressed_is_stub(const struct perf_tool *tool)
+{
+	return tool->compressed == perf_session__process_compressed_event_stub;
+}
+
+#define CREATE_DELEGATE_SAMPLE(name) \
+	static int delegate_ ## name(const struct perf_tool *tool, \
+				     union perf_event *event, \
+				     struct perf_sample *sample, \
+				     struct machine *machine) \
+	{								\
+		struct delegate_tool *del_tool = container_of(tool, struct delegate_tool, tool); \
+		struct perf_tool *delegate = del_tool->delegate;		\
+		return delegate->name(delegate, event, sample, machine);	\
+	}
+CREATE_DELEGATE_SAMPLE(read);
+CREATE_DELEGATE_SAMPLE(sample);
+CREATE_DELEGATE_SAMPLE(callchain_deferred);
+
+#define CREATE_DELEGATE_ATTR(name)					\
+	static int delegate_ ## name(const struct perf_tool *tool,	\
+				union perf_event *event,		\
+				struct evlist **pevlist)		\
+	{								\
+		struct delegate_tool *del_tool = container_of(tool, struct delegate_tool, tool); \
+		struct perf_tool *delegate = del_tool->delegate;		\
+		return delegate->name(delegate, event, pevlist);	\
+	}
+CREATE_DELEGATE_ATTR(attr);
+CREATE_DELEGATE_ATTR(event_update);
+
+#define CREATE_DELEGATE_OE(name)				   \
+	static int delegate_ ## name(const struct perf_tool *tool, \
+				     union perf_event *event,	   \
+				     struct ordered_events *oe)	   \
+	{								\
+		struct delegate_tool *del_tool = container_of(tool, struct delegate_tool, tool); \
+		struct perf_tool *delegate = del_tool->delegate;		\
+		return delegate->name(delegate, event, oe);	\
+	}
+CREATE_DELEGATE_OE(finished_round);
+
+#define CREATE_DELEGATE_OP(name)				   \
+	static int delegate_ ## name(const struct perf_tool *tool, \
+				     union perf_event *event, \
+				     struct perf_sample *sample, \
+				     struct machine *machine) \
+	{								\
+		struct delegate_tool *del_tool = container_of(tool, struct delegate_tool, tool); \
+		struct perf_tool *delegate = del_tool->delegate;		\
+		return delegate->name(delegate, event, sample, machine); \
+	}
+CREATE_DELEGATE_OP(aux);
+CREATE_DELEGATE_OP(aux_output_hw_id);
+CREATE_DELEGATE_OP(bpf);
+CREATE_DELEGATE_OP(cgroup);
+CREATE_DELEGATE_OP(comm);
+CREATE_DELEGATE_OP(context_switch);
+CREATE_DELEGATE_OP(exit);
+CREATE_DELEGATE_OP(fork);
+CREATE_DELEGATE_OP(itrace_start);
+CREATE_DELEGATE_OP(ksymbol);
+CREATE_DELEGATE_OP(lost);
+CREATE_DELEGATE_OP(lost_samples);
+CREATE_DELEGATE_OP(mmap);
+CREATE_DELEGATE_OP(mmap2);
+CREATE_DELEGATE_OP(namespaces);
+CREATE_DELEGATE_OP(text_poke);
+CREATE_DELEGATE_OP(throttle);
+CREATE_DELEGATE_OP(unthrottle);
+
+#define CREATE_DELEGATE_OP2(name)					\
+	static int delegate_ ## name(const struct perf_tool *tool,	\
+				     struct perf_session *session,	\
+				     union perf_event *event)		\
+	{								\
+		struct delegate_tool *del_tool = container_of(tool, struct delegate_tool, tool); \
+		struct perf_tool *delegate = del_tool->delegate;		\
+		return delegate->name(delegate, session, event);	\
+	}
+CREATE_DELEGATE_OP2(auxtrace_error);
+CREATE_DELEGATE_OP2(auxtrace_info);
+CREATE_DELEGATE_OP2(bpf_metadata);
+CREATE_DELEGATE_OP2(build_id);
+CREATE_DELEGATE_OP2(cpu_map);
+CREATE_DELEGATE_OP2(feature);
+CREATE_DELEGATE_OP2(finished_init);
+CREATE_DELEGATE_OP2(id_index);
+CREATE_DELEGATE_OP2(stat);
+CREATE_DELEGATE_OP2(stat_config);
+CREATE_DELEGATE_OP2(stat_round);
+CREATE_DELEGATE_OP2(thread_map);
+CREATE_DELEGATE_OP2(time_conv);
+CREATE_DELEGATE_OP2(schedstat_cpu);
+CREATE_DELEGATE_OP2(schedstat_domain);
+CREATE_DELEGATE_OP2(tracing_data);
+
+#define CREATE_DELEGATE_OP3(name)					\
+	static s64 delegate_ ## name(const struct perf_tool *tool,	\
+				     struct perf_session *session,      \
+				     union perf_event *event)           \
+	{								\
+		struct delegate_tool *del_tool = container_of(tool, struct delegate_tool, tool); \
+		struct perf_tool *delegate = del_tool->delegate;	\
+		return delegate->name(delegate, session, event);	\
+	}
+CREATE_DELEGATE_OP3(auxtrace);
+
+#define CREATE_DELEGATE_OP4(name)					\
+	static int delegate_ ## name(const struct perf_tool *tool, \
+			struct perf_session *session, \
+			union perf_event *event, \
+			u64 data, \
+			const char *str) \
+	{								\
+		struct delegate_tool *del_tool = container_of(tool, struct delegate_tool, tool); \
+		struct perf_tool *delegate = del_tool->delegate;		\
+		return delegate->name(delegate, session, event, data, str);	\
+	}
+CREATE_DELEGATE_OP4(compressed);
+
+void delegate_tool__init(struct delegate_tool *tool, struct perf_tool *delegate)
+{
+	tool->delegate = delegate;
+
+	tool->tool.ordered_events = delegate->ordered_events;
+	tool->tool.ordering_requires_timestamps = delegate->ordering_requires_timestamps;
+	tool->tool.namespace_events = delegate->namespace_events;
+	tool->tool.cgroup_events = delegate->cgroup_events;
+	tool->tool.no_warn = delegate->no_warn;
+	tool->tool.show_feat_hdr = delegate->show_feat_hdr;
+	tool->tool.merge_deferred_callchains = delegate->merge_deferred_callchains;
+	tool->tool.dont_split_sample_group = delegate->dont_split_sample_group;
+
+	tool->tool.sample = delegate_sample;
+	tool->tool.read = delegate_read;
+
+	tool->tool.mmap = delegate_mmap;
+	tool->tool.mmap2 = delegate_mmap2;
+	tool->tool.comm = delegate_comm;
+	tool->tool.namespaces = delegate_namespaces;
+	tool->tool.cgroup = delegate_cgroup;
+	tool->tool.fork = delegate_fork;
+	tool->tool.exit = delegate_exit;
+	tool->tool.lost = delegate_lost;
+	tool->tool.lost_samples = delegate_lost_samples;
+	tool->tool.aux = delegate_aux;
+	tool->tool.itrace_start = delegate_itrace_start;
+	tool->tool.aux_output_hw_id = delegate_aux_output_hw_id;
+	tool->tool.context_switch = delegate_context_switch;
+	tool->tool.throttle = delegate_throttle;
+	tool->tool.unthrottle = delegate_unthrottle;
+	tool->tool.ksymbol = delegate_ksymbol;
+	tool->tool.bpf = delegate_bpf;
+	tool->tool.text_poke = delegate_text_poke;
+	tool->tool.callchain_deferred = delegate_callchain_deferred;
+
+	tool->tool.attr = delegate_attr;
+	tool->tool.event_update = delegate_event_update;
+
+	tool->tool.tracing_data = delegate_tracing_data;
+
+	tool->tool.finished_round = delegate_finished_round;
+
+	tool->tool.build_id = delegate_build_id;
+	tool->tool.id_index = delegate_id_index;
+	tool->tool.auxtrace_info = delegate_auxtrace_info;
+	tool->tool.auxtrace_error = delegate_auxtrace_error;
+	tool->tool.time_conv = delegate_time_conv;
+	tool->tool.thread_map = delegate_thread_map;
+	tool->tool.cpu_map = delegate_cpu_map;
+	tool->tool.stat_config = delegate_stat_config;
+	tool->tool.stat = delegate_stat;
+	tool->tool.stat_round = delegate_stat_round;
+	tool->tool.feature = delegate_feature;
+	tool->tool.finished_init = delegate_finished_init;
+	tool->tool.bpf_metadata = delegate_bpf_metadata;
+	tool->tool.compressed = delegate_compressed;
+	tool->tool.auxtrace = delegate_auxtrace;
+	tool->tool.schedstat_cpu = delegate_schedstat_cpu;
+	tool->tool.schedstat_domain = delegate_schedstat_domain;
+}