Merge tag 'perf-tools-2020-08-14' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull more perf tools updates from Arnaldo Carvalho de Melo:
 "Fixes:
   - Fixes for 'perf bench numa'.

   - Always memset source before memcpy in 'perf bench mem'.

   - Quote CC and CXX for their arguments to fix build in environments
     using those variables to pass more than just the compiler names.

   - Fix module symbol processing, addressing regression detected via
     "perf test".

   - Allow multiple probes in record+script_probe_vfs_getname.sh 'perf
     test' entry.

  Improvements:
   - Add script to autogenerate socket family name id->string table from
     copy of kernel header, used so far in 'perf trace'.

   - 'perf ftrace' improvements to provide similar options for this
     utility so that one can go from 'perf record', 'perf trace', etc to
     'perf ftrace' just by changing the name of the subcommand.

   - Prefer new "sched:sched_waking" trace event when it exists in 'perf
     sched' post processing.

   - Update POWER9 metrics to utilize other metrics.

   - Fall back to querying debuginfod if debuginfo not found locally.

  Miscellaneous:
   - Sync various kvm headers with kernel sources"

* tag 'perf-tools-2020-08-14' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (40 commits)
  perf ftrace: Make option description initials all capital letters
  perf build-ids: Fall back to debuginfod query if debuginfo not found
  perf bench numa: Remove dead code in parse_nodes_opt()
  perf stat: Update POWER9 metrics to utilize other metrics
  perf ftrace: Add change log
  perf: ftrace: Add set_tracing_options() to set all trace options
  perf ftrace: Add option --tid to filter by thread id
  perf ftrace: Add option -D/--delay to delay tracing
  perf: ftrace: Allow set graph depth by '--graph-opts'
  perf ftrace: Add support for trace option tracing_thresh
  perf ftrace: Add option 'verbose' to show more info for graph tracer
  perf ftrace: Add support for tracing option 'irq-info'
  perf ftrace: Add support for trace option funcgraph-irqs
  perf ftrace: Add support for trace option sleep-time
  perf ftrace: Add support for tracing option 'func_stack_trace'
  perf tools: Add general function to parse sublevel options
  perf ftrace: Add option '--inherit' to trace children processes
  perf ftrace: Show trace column header
  perf ftrace: Add option '-m/--buffer-size' to set per-cpu buffer size
  perf ftrace: Factor out function write_tracing_file_int()
  ...

MAINTAINERS

@@ -13566,6 +13566,7 @@ F:	arch/*/kernel/perf_event*.c
 F:	include/linux/perf_event.h
 F:	include/uapi/linux/perf_event.h
 F:	kernel/events/*
+F:	tools/lib/perf/
 F:	tools/perf/
 
 PERFORMANCE EVENTS SUBSYSTEM ARM64 PMU EVENTS

tools/arch/s390/include/uapi/asm/kvm.h

@@ -231,11 +231,13 @@ struct kvm_guest_debug_arch {
 #define KVM_SYNC_GSCB   (1UL << 9)
 #define KVM_SYNC_BPBC   (1UL << 10)
 #define KVM_SYNC_ETOKEN (1UL << 11)
+#define KVM_SYNC_DIAG318 (1UL << 12)
 
 #define KVM_SYNC_S390_VALID_FIELDS \
 	(KVM_SYNC_PREFIX | KVM_SYNC_GPRS | KVM_SYNC_ACRS | KVM_SYNC_CRS | \
 	 KVM_SYNC_ARCH0 | KVM_SYNC_PFAULT | KVM_SYNC_VRS | KVM_SYNC_RICCB | \
-	 KVM_SYNC_FPRS | KVM_SYNC_GSCB | KVM_SYNC_BPBC | KVM_SYNC_ETOKEN)
+	 KVM_SYNC_FPRS | KVM_SYNC_GSCB | KVM_SYNC_BPBC | KVM_SYNC_ETOKEN | \
+	 KVM_SYNC_DIAG318)
 
 /* length and alignment of the sdnx as a power of two */
 #define SDNXC 8
@@ -264,7 +266,8 @@ struct kvm_sync_regs {
 	__u8 reserved2 : 7;
 	__u8 padding1[51];	/* riccb needs to be 64byte aligned */
 	__u8 riccb[64];		/* runtime instrumentation controls block */
-	__u8 padding2[192];	/* sdnx needs to be 256byte aligned */
+	__u64 diag318;		/* diagnose 0x318 info */
+	__u8 padding2[184];	/* sdnx needs to be 256byte aligned */
 	union {
 		__u8 sdnx[SDNXL];  /* state description annex */
 		struct {

tools/build/Makefile.feature

@@ -8,7 +8,7 @@ endif
 
 feature_check = $(eval $(feature_check_code))
 define feature_check_code
-  feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CC=$(CC) CXX=$(CXX) CFLAGS="$(EXTRA_CFLAGS) $(FEATURE_CHECK_CFLAGS-$(1))" CXXFLAGS="$(EXTRA_CXXFLAGS) $(FEATURE_CHECK_CXXFLAGS-$(1))" LDFLAGS="$(LDFLAGS) $(FEATURE_CHECK_LDFLAGS-$(1))" -C $(feature_dir) $(OUTPUT_FEATURES)test-$1.bin >/dev/null 2>/dev/null && echo 1 || echo 0)
+  feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CC="$(CC)" CXX="$(CXX)" CFLAGS="$(EXTRA_CFLAGS) $(FEATURE_CHECK_CFLAGS-$(1))" CXXFLAGS="$(EXTRA_CXXFLAGS) $(FEATURE_CHECK_CXXFLAGS-$(1))" LDFLAGS="$(LDFLAGS) $(FEATURE_CHECK_LDFLAGS-$(1))" -C $(feature_dir) $(OUTPUT_FEATURES)test-$1.bin >/dev/null 2>/dev/null && echo 1 || echo 0)
 endef
 
 feature_set = $(eval $(feature_set_code))
@@ -98,7 +98,8 @@ FEATURE_TESTS_EXTRA :=                  \
          llvm-version                   \
          clang                          \
          libbpf                         \
-         libpfm4
+         libpfm4                        \
+         libdebuginfod
 
 FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC)
 

tools/build/feature/Makefile

@@ -26,6 +26,7 @@ FILES=                                          \
          test-libelf-gelf_getnote.bin           \
          test-libelf-getshdrstrndx.bin          \
          test-libelf-mmap.bin                   \
+         test-libdebuginfod.bin                 \
          test-libnuma.bin                       \
          test-numa_num_possible_cpus.bin        \
          test-libperl.bin                       \
@@ -157,6 +158,9 @@ $(OUTPUT)test-libelf-gelf_getnote.bin:
 $(OUTPUT)test-libelf-getshdrstrndx.bin:
 	$(BUILD) -lelf
 
+$(OUTPUT)test-libdebuginfod.bin:
+	$(BUILD) -ldebuginfod
+
 $(OUTPUT)test-libnuma.bin:
 	$(BUILD) -lnuma
 

tools/build/feature/test-libdebuginfod.c

+// SPDX-License-Identifier: GPL-2.0
+#include <elfutils/debuginfod.h>
+
+int main(void)
+{
+	debuginfod_client* c = debuginfod_begin();
+	return (long)c;
+}

tools/include/uapi/linux/kvm.h

@@ -289,6 +289,7 @@ struct kvm_run {
 		/* KVM_EXIT_FAIL_ENTRY */
 		struct {
 			__u64 hardware_entry_failure_reason;
+			__u32 cpu;
 		} fail_entry;
 		/* KVM_EXIT_EXCEPTION */
 		struct {
@@ -1031,6 +1032,9 @@ struct kvm_ppc_resize_hpt {
 #define KVM_CAP_PPC_SECURE_GUEST 181
 #define KVM_CAP_HALT_POLL 182
 #define KVM_CAP_ASYNC_PF_INT 183
+#define KVM_CAP_LAST_CPU 184
+#define KVM_CAP_SMALLER_MAXPHYADDR 185
+#define KVM_CAP_S390_DIAG318 186
 
 #ifdef KVM_CAP_IRQ_ROUTING
 

tools/include/uapi/linux/vhost.h

@@ -91,6 +91,8 @@
 
 /* Use message type V2 */
 #define VHOST_BACKEND_F_IOTLB_MSG_V2 0x1
+/* IOTLB can accept batching hints */
+#define VHOST_BACKEND_F_IOTLB_BATCH  0x2
 
 #define VHOST_SET_BACKEND_FEATURES _IOW(VHOST_VIRTIO, 0x25, __u64)
 #define VHOST_GET_BACKEND_FEATURES _IOR(VHOST_VIRTIO, 0x26, __u64)

tools/lib/perf/Documentation/libperf-counting.txt

@@ -7,13 +7,13 @@ libperf-counting - counting interface
 
 DESCRIPTION
 -----------
-The counting interface provides API to meassure and get count for specific perf events.
+The counting interface provides API to measure and get count for specific perf events.
 
 The following test tries to explain count on `counting.c` example.
 
 It is by no means complete guide to counting, but shows libperf basic API for counting.
 
-The `counting.c` comes with libbperf package and can be compiled and run like:
+The `counting.c` comes with libperf package and can be compiled and run like:
 
 [source,bash]
 --
@@ -26,7 +26,8 @@ count 176242, enabled 176242, run 176242
 It requires root access, because of the `PERF_COUNT_SW_CPU_CLOCK` event,
 which is available only for root.
 
-The `counting.c` example monitors two events on the current process and displays their count, in a nutshel it:
+The `counting.c` example monitors two events on the current process and displays
+their count, in a nutshell it:
 
 * creates events
 * adds them to the event list
@@ -152,7 +153,7 @@ Configure event list with the thread map and open events:
 --
 
 Both events are created as disabled (note the `disabled = 1` assignment above),
-so we need to enable the whole list explicitely (both events).
+so we need to enable the whole list explicitly (both events).
 
 From this moment events are counting and we can do our workload.
 
@@ -167,7 +168,8 @@ When we are done we disable the events list.
  79         perf_evlist__disable(evlist);
 --
 
-Now we need to get the counts from events, following code iterates throught the events list and read counts:
+Now we need to get the counts from events, following code iterates through the
+events list and read counts:
 
 [source,c]
 --
@@ -178,7 +180,7 @@ Now we need to get the counts from events, following code iterates throught the
  85         }
 --
 
-And finaly cleanup.
+And finally cleanup.
 
 We close the whole events list (both events) and remove it together with the threads map:
 

tools/lib/perf/Documentation/libperf-sampling.txt

@@ -8,13 +8,13 @@ libperf-sampling - sampling interface
 
 DESCRIPTION
 -----------
-The sampling interface provides API to meassure and get count for specific perf events.
+The sampling interface provides API to measure and get count for specific perf events.
 
 The following test tries to explain count on `sampling.c` example.
 
 It is by no means complete guide to sampling, but shows libperf basic API for sampling.
 
-The `sampling.c` comes with libbperf package and can be compiled and run like:
+The `sampling.c` comes with libperf package and can be compiled and run like:
 
 [source,bash]
 --
@@ -33,7 +33,8 @@ cpu   0, pid   4465, tid   4470, ip         7f84fe0ebebf, period             176
 
 It requires root access, because it uses hardware cycles event.
 
-The `sampling.c` example profiles/samples all CPUs with hardware cycles, in a nutshel it:
+The `sampling.c` example profiles/samples all CPUs with hardware cycles, in a
+nutshell it:
 
 - creates events
 - adds them to the event list
@@ -90,7 +91,7 @@ Once the setup is complete we start by defining cycles event using the `struct p
  36         };
 --
 
-Next step is to prepare cpus map.
+Next step is to prepare CPUs map.
 
 In this case we will monitor all the available CPUs:
 
@@ -152,7 +153,7 @@ Once the events list is open, we can create memory maps AKA perf ring buffers:
 --
 
 The event is created as disabled (note the `disabled = 1` assignment above),
-so we need to enable the events list explicitely.
+so we need to enable the events list explicitly.
 
 From this moment the cycles event is sampling.
 
@@ -212,7 +213,7 @@ Each sample needs to get parsed:
 106                                 cpu, pid, tid, ip, period);
 --
 
-And finaly cleanup.
+And finally cleanup.
 
 We close the whole events list (both events) and remove it together with the threads map:
 

tools/lib/perf/Documentation/libperf.txt

@@ -29,7 +29,7 @@ SYNOPSIS
   void libperf_init(libperf_print_fn_t fn);
 --
 
-*API to handle cpu maps:*
+*API to handle CPU maps:*
 
 [source,c]
 --
@@ -217,7 +217,7 @@ Following objects are key to the libperf interface:
 
 [horizontal]
 
-struct perf_cpu_map:: Provides a cpu list abstraction.
+struct perf_cpu_map:: Provides a CPU list abstraction.
 
 struct perf_thread_map:: Provides a thread list abstraction.
 

tools/perf/Documentation/perf-config.txt

@@ -614,8 +614,9 @@ trace.*::
 
 ftrace.*::
 	ftrace.tracer::
-		Can be used to select the default tracer. Possible values are
-		'function' and 'function_graph'.
+		Can be used to select the default tracer when neither -G nor
+		-F option is not specified. Possible values are 'function' and
+		'function_graph'.
 
 llvm.*::
 	llvm.clang-path::

tools/perf/Documentation/perf-ftrace.txt

@@ -24,16 +24,28 @@ OPTIONS
 
 -t::
 --tracer=::
-	Tracer to use: function_graph or function.
+	Tracer to use when neither -G nor -F option is not
+	specified: function_graph or function.
 
 -v::
 --verbose=::
         Verbosity level.
 
+-F::
+--funcs::
+        List all available functions to trace.
+
 -p::
 --pid=::
 	Trace on existing process id (comma separated list).
 
+--tid=::
+	Trace on existing thread id (comma separated list).
+
+-D::
+--delay::
+	Time (ms) to wait before starting tracing after program start.
+
 -a::
 --all-cpus::
 	Force system-wide collection.  Scripts run without a <command>
@@ -48,39 +60,58 @@ OPTIONS
 	Ranges of CPUs are specified with -: 0-2.
 	Default is to trace on all online CPUs.
 
+-m::
+--buffer-size::
+	Set the size of per-cpu tracing buffer, <size> is expected to
+	be a number with appended unit character - B/K/M/G.
+
+--inherit::
+	Trace children processes spawned by our target.
+
 -T::
 --trace-funcs=::
-	Only trace functions given by the argument.  Multiple functions
-	can be given by using this option more than once.  The function
-	argument also can be a glob pattern.  It will be passed to
-	'set_ftrace_filter' in tracefs.
+	Select function tracer and set function filter on the given
+	function (or a glob pattern). Multiple functions can be given
+	by using this option more than once. The function argument also
+	can be a glob pattern. It will be passed to 'set_ftrace_filter'
+	in tracefs.
 
 -N::
 --notrace-funcs=::
-	Do not trace functions given by the argument.  Like -T option,
-	this can be used more than once to specify multiple functions
-	(or glob patterns).  It will be passed to 'set_ftrace_notrace'
-	in tracefs.
+	Select function tracer and do not trace functions given by the
+	argument.  Like -T option, this can be used more than once to
+	specify multiple functions (or glob patterns).  It will be
+	passed to 'set_ftrace_notrace' in tracefs.
+
+--func-opts::
+	List of options allowed to set:
+	  call-graph - Display kernel stack trace for function tracer.
+	  irq-info   - Display irq context info for function tracer.
 
 -G::
 --graph-funcs=::
-	Set graph filter on the given function (or a glob pattern).
-	This is useful for the function_graph tracer only and enables
-	tracing for functions executed from the given function.
-	This can be used more than once to specify multiple functions.
-	It will be passed to 'set_graph_function' in tracefs.
+	Select function_graph tracer and set graph filter on the given
+	function (or a glob pattern). This is useful to trace for
+	functions executed from the given function. This can be used more
+	than once to specify multiple functions. It will be passed to
+	'set_graph_function' in tracefs.
 
 -g::
 --nograph-funcs=::
-	Set graph notrace filter on the given function (or a glob pattern).
-	Like -G option, this is useful for the function_graph tracer only
-	and disables tracing for function executed from the given function.
-	This can be used more than once to specify multiple functions.
-	It will be passed to 'set_graph_notrace' in tracefs.
+	Select function_graph tracer and set graph notrace filter on the
+	given function (or a glob pattern). Like -G option, this is useful
+	for the function_graph tracer only and disables tracing for function
+	executed from the given function. This can be used more than once to
+	specify multiple functions. It will be passed to 'set_graph_notrace'
+	in tracefs.
 
--D::
---graph-depth=::
-	Set max depth for function graph tracer to follow
+--graph-opts::
+	List of options allowed to set:
+	  nosleep-time - Measure on-CPU time only for function_graph tracer.
+	  noirqs       - Ignore functions that happen inside interrupt.
+	  verbose      - Show process names, PIDs, timestamps, etc.
+	  thresh=<n>   - Setup trace duration threshold in microseconds.
+	  depth=<n>    - Set max depth for function graph tracer to follow.
 
 SEE ALSO
 --------

tools/perf/Makefile.config

@@ -501,6 +501,14 @@ ifndef NO_LIBELF
     CFLAGS += -DHAVE_ELF_GETSHDRSTRNDX_SUPPORT
   endif
 
+  ifndef NO_LIBDEBUGINFOD
+    $(call feature_check,libdebuginfod)
+    ifeq ($(feature-libdebuginfod), 1)
+      CFLAGS += -DHAVE_DEBUGINFOD_SUPPORT
+      EXTLIBS += -ldebuginfod
+    endif
+  endif
+
   ifndef NO_DWARF
     ifeq ($(origin PERF_HAVE_DWARF_REGS), undefined)
       msg := $(warning DWARF register mappings have not been defined for architecture $(SRCARCH), DWARF support disabled);

tools/perf/Makefile.perf

@@ -124,6 +124,8 @@ include ../scripts/utilities.mak
 #
 # Define LIBPFM4 to enable libpfm4 events extension.
 #
+# Define NO_LIBDEBUGINFOD if you do not want support debuginfod
+#
 
 # As per kernel Makefile, avoid funny character set dependencies
 unexport LC_ALL
@@ -418,6 +420,7 @@ export INSTALL SHELL_PATH
 
 SHELL = $(SHELL_PATH)
 
+beauty_linux_dir := $(srctree)/tools/perf/trace/beauty/include/linux/
 linux_uapi_dir := $(srctree)/tools/include/uapi/linux
 asm_generic_uapi_dir := $(srctree)/tools/include/uapi/asm-generic
 arch_asm_uapi_dir := $(srctree)/tools/arch/$(SRCARCH)/include/uapi/asm/
@@ -501,6 +504,12 @@ socket_ipproto_tbl := $(srctree)/tools/perf/trace/beauty/socket_ipproto.sh
 $(socket_ipproto_array): $(linux_uapi_dir)/in.h $(socket_ipproto_tbl)
 	$(Q)$(SHELL) '$(socket_ipproto_tbl)' $(linux_uapi_dir) > $@
 
+socket_arrays := $(beauty_outdir)/socket_arrays.c
+socket_tbl := $(srctree)/tools/perf/trace/beauty/socket.sh
+
+$(socket_arrays): $(beauty_linux_dir)/socket.h $(socket_tbl)
+	$(Q)$(SHELL) '$(socket_tbl)' $(beauty_linux_dir) > $@
+
 vhost_virtio_ioctl_array := $(beauty_ioctl_outdir)/vhost_virtio_ioctl_array.c
 vhost_virtio_hdr_dir := $(srctree)/tools/include/uapi/linux
 vhost_virtio_ioctl_tbl := $(srctree)/tools/perf/trace/beauty/vhost_virtio_ioctl.sh
@@ -697,6 +706,7 @@ prepare: $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)common-cmds.h archheaders $(drm_ioc
 	$(kcmp_type_array) \
 	$(kvm_ioctl_array) \
 	$(socket_ipproto_array) \
+	$(socket_arrays) \
 	$(vhost_virtio_ioctl_array) \
 	$(madvise_behavior_array) \
 	$(mmap_flags_array) \
@@ -1006,6 +1016,7 @@ clean:: $(LIBTRACEEVENT)-clean $(LIBAPI)-clean $(LIBBPF)-clean $(LIBSUBCMD)-clea
 		$(OUTPUT)$(kvm_ioctl_array) \
 		$(OUTPUT)$(kcmp_type_array) \
 		$(OUTPUT)$(socket_ipproto_array) \
+		$(OUTPUT)$(socket_arrays) \
 		$(OUTPUT)$(vhost_virtio_ioctl_array) \
 		$(OUTPUT)$(perf_ioctl_array) \
 		$(OUTPUT)$(prctl_option_array) \

tools/perf/bench/find-bit-bench.c

@@ -17,9 +17,9 @@ static unsigned int inner_iterations = 100000;
 
 static const struct option options[] = {
 	OPT_UINTEGER('i', "outer-iterations", &outer_iterations,
-		"Number of outerer iterations used"),
+		"Number of outer iterations used"),
 	OPT_UINTEGER('j', "inner-iterations", &inner_iterations,
-		"Number of outerer iterations used"),
+		"Number of inner iterations used"),
 	OPT_END()
 };
 

tools/perf/bench/mem-functions.c

@@ -223,12 +223,8 @@ static int bench_mem_common(int argc, const char **argv, struct bench_mem_info *
 	return 0;
 }
 
-static u64 do_memcpy_cycles(const struct function *r, size_t size, void *src, void *dst)
+static void memcpy_prefault(memcpy_t fn, size_t size, void *src, void *dst)
 {
-	u64 cycle_start = 0ULL, cycle_end = 0ULL;
-	memcpy_t fn = r->fn.memcpy;
-	int i;
-
 	/* Make sure to always prefault zero pages even if MMAP_THRESH is crossed: */
 	memset(src, 0, size);
 
@@ -237,6 +233,15 @@ static u64 do_memcpy_cycles(const struct function *r, size_t size, void *src, vo
 	 * to not measure page fault overhead:
 	 */
 	fn(dst, src, size);
+}
+
+static u64 do_memcpy_cycles(const struct function *r, size_t size, void *src, void *dst)
+{
+	u64 cycle_start = 0ULL, cycle_end = 0ULL;
+	memcpy_t fn = r->fn.memcpy;
+	int i;
+
+	memcpy_prefault(fn, size, src, dst);
 
 	cycle_start = get_cycles();
 	for (i = 0; i < nr_loops; ++i)
@@ -252,11 +257,7 @@ static double do_memcpy_gettimeofday(const struct function *r, size_t size, void
 	memcpy_t fn = r->fn.memcpy;
 	int i;
 
-	/*
-	 * We prefault the freshly allocated memory range here,
-	 * to not measure page fault overhead:
-	 */
-	fn(dst, src, size);
+	memcpy_prefault(fn, size, src, dst);
 
 	BUG_ON(gettimeofday(&tv_start, NULL));
 	for (i = 0; i < nr_loops; ++i)

tools/perf/bench/numa.c

@@ -247,17 +247,22 @@ static int is_node_present(int node)
  */
 static bool node_has_cpus(int node)
 {
-	struct bitmask *cpu = numa_allocate_cpumask();
-	unsigned int i;
+	struct bitmask *cpumask = numa_allocate_cpumask();
+	bool ret = false; /* fall back to nocpus */
+	int cpu;
 
-	if (cpu && !numa_node_to_cpus(node, cpu)) {
-		for (i = 0; i < cpu->size; i++) {
-			if (numa_bitmask_isbitset(cpu, i))
-				return true;
+	BUG_ON(!cpumask);
+	if (!numa_node_to_cpus(node, cpumask)) {
+		for (cpu = 0; cpu < (int)cpumask->size; cpu++) {
+			if (numa_bitmask_isbitset(cpumask, cpu)) {
+				ret = true;
+				break;
+			}
 		}
 	}
+	numa_free_cpumask(cpumask);
 
-	return false; /* lets fall back to nocpus safely */
+	return ret;
 }
 
 static cpu_set_t bind_to_cpu(int target_cpu)
@@ -288,14 +293,10 @@ static cpu_set_t bind_to_cpu(int target_cpu)
 
 static cpu_set_t bind_to_node(int target_node)
 {
-	int cpus_per_node = g->p.nr_cpus / nr_numa_nodes();
 	cpu_set_t orig_mask, mask;
 	int cpu;
 	int ret;
 
-	BUG_ON(cpus_per_node * nr_numa_nodes() != g->p.nr_cpus);
-	BUG_ON(!cpus_per_node);
-
 	ret = sched_getaffinity(0, sizeof(orig_mask), &orig_mask);
 	BUG_ON(ret);
 
@@ -305,14 +306,17 @@ static cpu_set_t bind_to_node(int target_node)
 		for (cpu = 0; cpu < g->p.nr_cpus; cpu++)
 			CPU_SET(cpu, &mask);
 	} else {
-		int cpu_start = (target_node + 0) * cpus_per_node;
-		int cpu_stop  = (target_node + 1) * cpus_per_node;
-
-		BUG_ON(cpu_stop > g->p.nr_cpus);
+		struct bitmask *cpumask = numa_allocate_cpumask();
 
-		for (cpu = cpu_start; cpu < cpu_stop; cpu++)
+		BUG_ON(!cpumask);
+		if (!numa_node_to_cpus(target_node, cpumask)) {
+			for (cpu = 0; cpu < (int)cpumask->size; cpu++) {
+				if (numa_bitmask_isbitset(cpumask, cpu))
 					CPU_SET(cpu, &mask);
 			}
+		}
+		numa_free_cpumask(cpumask);
+	}
 
 	ret = sched_setaffinity(0, sizeof(mask), &mask);
 	BUG_ON(ret);
@@ -729,8 +733,6 @@ static int parse_nodes_opt(const struct option *opt __maybe_unused,
 		return -1;
 
 	return parse_node_list(arg);
-
-	return 0;
 }
 
 #define BIT(x) (1ul << x)
@@ -813,12 +815,12 @@ static u64 do_work(u8 *__data, long bytes, int nr, int nr_max, int loop, u64 val
 			}
 		}
 	} else if (!g->p.data_backwards || (nr + loop) & 1) {
+		/* Process data forwards: */
 
 		d0 = data + off;
 		d  = data + off + 1;
 		d1 = data + words;
 
-		/* Process data forwards: */
 		for (;;) {
 			if (unlikely(d >= d1))
 				d = data;
@@ -836,7 +838,6 @@ static u64 do_work(u8 *__data, long bytes, int nr, int nr_max, int loop, u64 val
 		d  = data + off - 1;
 		d1 = data + words;
 
-		/* Process data forwards: */
 		for (;;) {
 			if (unlikely(d < data))
 				d = data + words-1;
@@ -1755,7 +1756,7 @@ static const char *tests[][MAX_ARGS] = {
    { " 1x3-convergence,", "mem",  "-p",  "1", "-t",  "3", "-P",  "512", OPT_CONV },
    { " 1x4-convergence,", "mem",  "-p",  "1", "-t",  "4", "-P",  "512", OPT_CONV },
    { " 1x6-convergence,", "mem",  "-p",  "1", "-t",  "6", "-P", "1020", OPT_CONV },
-   { " 2x3-convergence,", "mem",  "-p",  "3", "-t",  "3", "-P", "1020", OPT_CONV },
+   { " 2x3-convergence,", "mem",  "-p",  "2", "-t",  "3", "-P", "1020", OPT_CONV },
    { " 3x3-convergence,", "mem",  "-p",  "3", "-t",  "3", "-P", "1020", OPT_CONV },
    { " 4x4-convergence,", "mem",  "-p",  "4", "-t",  "4", "-P",  "512", OPT_CONV },
    { " 4x4-convergence-NOTHP,",
@@ -1780,22 +1781,22 @@ static const char *tests[][MAX_ARGS] = {
 			  "mem",  "-p",  "8", "-t",  "1", "-P", " 512", OPT_BW_NOTHP },
    { "16x1-bw-process,",  "mem",  "-p", "16", "-t",  "1", "-P",  "256", OPT_BW },
 
-   { " 4x1-bw-thread,",	  "mem",  "-p",  "1", "-t",  "4", "-T",  "256", OPT_BW },
-   { " 8x1-bw-thread,",	  "mem",  "-p",  "1", "-t",  "8", "-T",  "256", OPT_BW },
-   { "16x1-bw-thread,",   "mem",  "-p",  "1", "-t", "16", "-T",  "128", OPT_BW },
-   { "32x1-bw-thread,",   "mem",  "-p",  "1", "-t", "32", "-T",   "64", OPT_BW },
+   { " 1x4-bw-thread,",   "mem",  "-p",  "1", "-t",  "4", "-T",  "256", OPT_BW },
+   { " 1x8-bw-thread,",   "mem",  "-p",  "1", "-t",  "8", "-T",  "256", OPT_BW },
+   { "1x16-bw-thread,",   "mem",  "-p",  "1", "-t", "16", "-T",  "128", OPT_BW },
+   { "1x32-bw-thread,",   "mem",  "-p",  "1", "-t", "32", "-T",   "64", OPT_BW },
 
-   { " 2x3-bw-thread,",	  "mem",  "-p",  "2", "-t",  "3", "-P",  "512", OPT_BW },
-   { " 4x4-bw-thread,",	  "mem",  "-p",  "4", "-t",  "4", "-P",  "512", OPT_BW },
-   { " 4x6-bw-thread,",	  "mem",  "-p",  "4", "-t",  "6", "-P",  "512", OPT_BW },
-   { " 4x8-bw-thread,",	  "mem",  "-p",  "4", "-t",  "8", "-P",  "512", OPT_BW },
-   { " 4x8-bw-thread-NOTHP,",
+   { " 2x3-bw-process,",  "mem",  "-p",  "2", "-t",  "3", "-P",  "512", OPT_BW },
+   { " 4x4-bw-process,",  "mem",  "-p",  "4", "-t",  "4", "-P",  "512", OPT_BW },
+   { " 4x6-bw-process,",  "mem",  "-p",  "4", "-t",  "6", "-P",  "512", OPT_BW },
+   { " 4x8-bw-process,",  "mem",  "-p",  "4", "-t",  "8", "-P",  "512", OPT_BW },
+   { " 4x8-bw-process-NOTHP,",
 			  "mem",  "-p",  "4", "-t",  "8", "-P",  "512", OPT_BW_NOTHP },
-   { " 3x3-bw-thread,",	  "mem",  "-p",  "3", "-t",  "3", "-P",  "512", OPT_BW },
-   { " 5x5-bw-thread,",	  "mem",  "-p",  "5", "-t",  "5", "-P",  "512", OPT_BW },
+   { " 3x3-bw-process,",  "mem",  "-p",  "3", "-t",  "3", "-P",  "512", OPT_BW },
+   { " 5x5-bw-process,",  "mem",  "-p",  "5", "-t",  "5", "-P",  "512", OPT_BW },
 
-   { "2x16-bw-thread,",   "mem",  "-p",  "2", "-t", "16", "-P",  "512", OPT_BW },
-   { "1x32-bw-thread,",   "mem",  "-p",  "1", "-t", "32", "-P", "2048", OPT_BW },
+   { "2x16-bw-process,",  "mem",  "-p",  "2", "-t", "16", "-P",  "512", OPT_BW },
+   { "1x32-bw-process,",  "mem",  "-p",  "1", "-t", "32", "-P", "2048", OPT_BW },
 
    { "numa02-bw,",        "mem",  "-p",  "1", "-t", "32", "-T",   "32", OPT_BW },
    { "numa02-bw-NOTHP,",  "mem",  "-p",  "1", "-t", "32", "-T",   "32", OPT_BW_NOTHP },

tools/perf/builtin-ftrace.c

@@ -3,6 +3,7 @@
  * builtin-ftrace.c
  *
  * Copyright (c) 2013  LG Electronics,  Namhyung Kim <namhyung@kernel.org>
+ * Copyright (c) 2020  Changbin Du <changbin.du@gmail.com>, significant enhancement.
  */
 
 #include "builtin.h"
@@ -26,6 +27,8 @@
 #include "thread_map.h"
 #include "util/cap.h"
 #include "util/config.h"
+#include "util/units.h"
+#include "util/parse-sublevel-options.h"
 
 #define DEFAULT_TRACER  "function_graph"
 
@@ -33,11 +36,21 @@ struct perf_ftrace {
 	struct evlist		*evlist;
 	struct target		target;
 	const char		*tracer;
+	bool			list_avail_functions;
 	struct list_head	filters;
 	struct list_head	notrace;
 	struct list_head	graph_funcs;
 	struct list_head	nograph_funcs;
 	int			graph_depth;
+	unsigned long		percpu_buffer_size;
+	bool			inherit;
+	int			func_stack_trace;
+	int			func_irq_info;
+	int			graph_nosleep_time;
+	int			graph_noirqs;
+	int			graph_verbose;
+	int			graph_thresh;
+	unsigned int		initial_delay;
 };
 
 struct filter_entry {
@@ -128,9 +141,85 @@ static int append_tracing_file(const char *name, const char *val)
 	return __write_tracing_file(name, val, true);
 }
 
+static int read_tracing_file_to_stdout(const char *name)
+{
+	char buf[4096];
+	char *file;
+	int fd;
+	int ret = -1;
+
+	file = get_tracing_file(name);
+	if (!file) {
+		pr_debug("cannot get tracing file: %s\n", name);
+		return -1;
+	}
+
+	fd = open(file, O_RDONLY);
+	if (fd < 0) {
+		pr_debug("cannot open tracing file: %s: %s\n",
+			 name, str_error_r(errno, buf, sizeof(buf)));
+		goto out;
+	}
+
+	/* read contents to stdout */
+	while (true) {
+		int n = read(fd, buf, sizeof(buf));
+		if (n == 0)
+			break;
+		else if (n < 0)
+			goto out_close;
+
+		if (fwrite(buf, n, 1, stdout) != 1)
+			goto out_close;
+	}
+	ret = 0;
+
+out_close:
+	close(fd);
+out:
+	put_tracing_file(file);
+	return ret;
+}
+
+static int write_tracing_file_int(const char *name, int value)
+{
+	char buf[16];
+
+	snprintf(buf, sizeof(buf), "%d", value);
+	if (write_tracing_file(name, buf) < 0)
+		return -1;
+
+	return 0;
+}
+
+static int write_tracing_option_file(const char *name, const char *val)
+{
+	char *file;
+	int ret;
+
+	if (asprintf(&file, "options/%s", name) < 0)
+		return -1;
+
+	ret = __write_tracing_file(file, val, false);
+	free(file);
+	return ret;
+}
+
 static int reset_tracing_cpu(void);
 static void reset_tracing_filters(void);
 
+static void reset_tracing_options(struct perf_ftrace *ftrace __maybe_unused)
+{
+	write_tracing_option_file("function-fork", "0");
+	write_tracing_option_file("func_stack_trace", "0");
+	write_tracing_option_file("sleep-time", "1");
+	write_tracing_option_file("funcgraph-irqs", "1");
+	write_tracing_option_file("funcgraph-proc", "0");
+	write_tracing_option_file("funcgraph-abstime", "0");
+	write_tracing_option_file("latency-format", "0");
+	write_tracing_option_file("irq-info", "0");
+}
+
 static int reset_tracing_files(struct perf_ftrace *ftrace __maybe_unused)
 {
 	if (write_tracing_file("tracing_on", "0") < 0)
@@ -148,7 +237,11 @@ static int reset_tracing_files(struct perf_ftrace *ftrace __maybe_unused)
 	if (write_tracing_file("max_graph_depth", "0") < 0)
 		return -1;
 
+	if (write_tracing_file("tracing_thresh", "0") < 0)
+		return -1;
+
 	reset_tracing_filters();
+	reset_tracing_options(ftrace);
 	return 0;
 }
 
@@ -204,6 +297,28 @@ static int set_tracing_cpu(struct perf_ftrace *ftrace)
 	return set_tracing_cpumask(cpumap);
 }
 
+static int set_tracing_func_stack_trace(struct perf_ftrace *ftrace)
+{
+	if (!ftrace->func_stack_trace)
+		return 0;
+
+	if (write_tracing_option_file("func_stack_trace", "1") < 0)
+		return -1;
+
+	return 0;
+}
+
+static int set_tracing_func_irqinfo(struct perf_ftrace *ftrace)
+{
+	if (!ftrace->func_irq_info)
+		return 0;
+
+	if (write_tracing_option_file("irq-info", "1") < 0)
+		return -1;
+
+	return 0;
+}
+
 static int reset_tracing_cpu(void)
 {
 	struct perf_cpu_map *cpumap = perf_cpu_map__new(NULL);
@@ -258,8 +373,6 @@ static void reset_tracing_filters(void)
 
 static int set_tracing_depth(struct perf_ftrace *ftrace)
 {
-	char buf[16];
-
 	if (ftrace->graph_depth == 0)
 		return 0;
 
@@ -268,14 +381,156 @@ static int set_tracing_depth(struct perf_ftrace *ftrace)
 		return -1;
 	}
 
-	snprintf(buf, sizeof(buf), "%d", ftrace->graph_depth);
+	if (write_tracing_file_int("max_graph_depth", ftrace->graph_depth) < 0)
+		return -1;
+
+	return 0;
+}
 
-	if (write_tracing_file("max_graph_depth", buf) < 0)
+static int set_tracing_percpu_buffer_size(struct perf_ftrace *ftrace)
+{
+	int ret;
+
+	if (ftrace->percpu_buffer_size == 0)
+		return 0;
+
+	ret = write_tracing_file_int("buffer_size_kb",
+				     ftrace->percpu_buffer_size / 1024);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int set_tracing_trace_inherit(struct perf_ftrace *ftrace)
+{
+	if (!ftrace->inherit)
+		return 0;
+
+	if (write_tracing_option_file("function-fork", "1") < 0)
 		return -1;
 
 	return 0;
 }
 
+static int set_tracing_sleep_time(struct perf_ftrace *ftrace)
+{
+	if (!ftrace->graph_nosleep_time)
+		return 0;
+
+	if (write_tracing_option_file("sleep-time", "0") < 0)
+		return -1;
+
+	return 0;
+}
+
+static int set_tracing_funcgraph_irqs(struct perf_ftrace *ftrace)
+{
+	if (!ftrace->graph_noirqs)
+		return 0;
+
+	if (write_tracing_option_file("funcgraph-irqs", "0") < 0)
+		return -1;
+
+	return 0;
+}
+
+static int set_tracing_funcgraph_verbose(struct perf_ftrace *ftrace)
+{
+	if (!ftrace->graph_verbose)
+		return 0;
+
+	if (write_tracing_option_file("funcgraph-proc", "1") < 0)
+		return -1;
+
+	if (write_tracing_option_file("funcgraph-abstime", "1") < 0)
+		return -1;
+
+	if (write_tracing_option_file("latency-format", "1") < 0)
+		return -1;
+
+	return 0;
+}
+
+static int set_tracing_thresh(struct perf_ftrace *ftrace)
+{
+	int ret;
+
+	if (ftrace->graph_thresh == 0)
+		return 0;
+
+	ret = write_tracing_file_int("tracing_thresh", ftrace->graph_thresh);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int set_tracing_options(struct perf_ftrace *ftrace)
+{
+	if (set_tracing_pid(ftrace) < 0) {
+		pr_err("failed to set ftrace pid\n");
+		return -1;
+	}
+
+	if (set_tracing_cpu(ftrace) < 0) {
+		pr_err("failed to set tracing cpumask\n");
+		return -1;
+	}
+
+	if (set_tracing_func_stack_trace(ftrace) < 0) {
+		pr_err("failed to set tracing option func_stack_trace\n");
+		return -1;
+	}
+
+	if (set_tracing_func_irqinfo(ftrace) < 0) {
+		pr_err("failed to set tracing option irq-info\n");
+		return -1;
+	}
+
+	if (set_tracing_filters(ftrace) < 0) {
+		pr_err("failed to set tracing filters\n");
+		return -1;
+	}
+
+	if (set_tracing_depth(ftrace) < 0) {
+		pr_err("failed to set graph depth\n");
+		return -1;
+	}
+
+	if (set_tracing_percpu_buffer_size(ftrace) < 0) {
+		pr_err("failed to set tracing per-cpu buffer size\n");
+		return -1;
+	}
+
+	if (set_tracing_trace_inherit(ftrace) < 0) {
+		pr_err("failed to set tracing option function-fork\n");
+		return -1;
+	}
+
+	if (set_tracing_sleep_time(ftrace) < 0) {
+		pr_err("failed to set tracing option sleep-time\n");
+		return -1;
+	}
+
+	if (set_tracing_funcgraph_irqs(ftrace) < 0) {
+		pr_err("failed to set tracing option funcgraph-irqs\n");
+		return -1;
+	}
+
+	if (set_tracing_funcgraph_verbose(ftrace) < 0) {
+		pr_err("failed to set tracing option funcgraph-proc/funcgraph-abstime\n");
+		return -1;
+	}
+
+	if (set_tracing_thresh(ftrace) < 0) {
+		pr_err("failed to set tracing thresh\n");
+		return -1;
+	}
+
+	return 0;
+}
+
 static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv)
 {
 	char *trace_file;
@@ -302,6 +557,9 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv)
 	signal(SIGCHLD, sig_handler);
 	signal(SIGPIPE, sig_handler);
 
+	if (ftrace->list_avail_functions)
+		return read_tracing_file_to_stdout("available_filter_functions");
+
 	if (reset_tracing_files(ftrace) < 0) {
 		pr_err("failed to reset ftrace\n");
 		goto out;
@@ -317,25 +575,8 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv)
 		goto out;
 	}
 
-	if (set_tracing_pid(ftrace) < 0) {
-		pr_err("failed to set ftrace pid\n");
+	if (set_tracing_options(ftrace) < 0)
 		goto out_reset;
-	}
-
-	if (set_tracing_cpu(ftrace) < 0) {
-		pr_err("failed to set tracing cpumask\n");
-		goto out_reset;
-	}
-
-	if (set_tracing_filters(ftrace) < 0) {
-		pr_err("failed to set tracing filters\n");
-		goto out_reset;
-	}
-
-	if (set_tracing_depth(ftrace) < 0) {
-		pr_err("failed to set graph depth\n");
-		goto out_reset;
-	}
 
 	if (write_tracing_file("current_tracer", ftrace->tracer) < 0) {
 		pr_err("failed to set current_tracer to %s\n", ftrace->tracer);
@@ -362,13 +603,26 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv)
 	fcntl(trace_fd, F_SETFL, O_NONBLOCK);
 	pollfd.fd = trace_fd;
 
+	/* display column headers */
+	read_tracing_file_to_stdout("trace");
+
+	if (!ftrace->initial_delay) {
 		if (write_tracing_file("tracing_on", "1") < 0) {
 			pr_err("can't enable tracing\n");
 			goto out_close_fd;
 		}
+	}
 
 	perf_evlist__start_workload(ftrace->evlist);
 
+	if (ftrace->initial_delay) {
+		usleep(ftrace->initial_delay * 1000);
+		if (write_tracing_file("tracing_on", "1") < 0) {
+			pr_err("can't enable tracing\n");
+			goto out_close_fd;
+		}
+	}
+
 	while (!done) {
 		if (poll(&pollfd, 1, -1) < 0)
 			break;
@@ -455,6 +709,99 @@ static void delete_filter_func(struct list_head *head)
 	}
 }
 
+static int parse_buffer_size(const struct option *opt,
+			     const char *str, int unset)
+{
+	unsigned long *s = (unsigned long *)opt->value;
+	static struct parse_tag tags_size[] = {
+		{ .tag  = 'B', .mult = 1       },
+		{ .tag  = 'K', .mult = 1 << 10 },
+		{ .tag  = 'M', .mult = 1 << 20 },
+		{ .tag  = 'G', .mult = 1 << 30 },
+		{ .tag  = 0 },
+	};
+	unsigned long val;
+
+	if (unset) {
+		*s = 0;
+		return 0;
+	}
+
+	val = parse_tag_value(str, tags_size);
+	if (val != (unsigned long) -1) {
+		if (val < 1024) {
+			pr_err("buffer size too small, must larger than 1KB.");
+			return -1;
+		}
+		*s = val;
+		return 0;
+	}
+
+	return -1;
+}
+
+static int parse_func_tracer_opts(const struct option *opt,
+				  const char *str, int unset)
+{
+	int ret;
+	struct perf_ftrace *ftrace = (struct perf_ftrace *) opt->value;
+	struct sublevel_option func_tracer_opts[] = {
+		{ .name = "call-graph",	.value_ptr = &ftrace->func_stack_trace },
+		{ .name = "irq-info",	.value_ptr = &ftrace->func_irq_info },
+		{ .name = NULL, }
+	};
+
+	if (unset)
+		return 0;
+
+	ret = perf_parse_sublevel_options(str, func_tracer_opts);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static int parse_graph_tracer_opts(const struct option *opt,
+				  const char *str, int unset)
+{
+	int ret;
+	struct perf_ftrace *ftrace = (struct perf_ftrace *) opt->value;
+	struct sublevel_option graph_tracer_opts[] = {
+		{ .name = "nosleep-time",	.value_ptr = &ftrace->graph_nosleep_time },
+		{ .name = "noirqs",		.value_ptr = &ftrace->graph_noirqs },
+		{ .name = "verbose",		.value_ptr = &ftrace->graph_verbose },
+		{ .name = "thresh",		.value_ptr = &ftrace->graph_thresh },
+		{ .name = "depth",		.value_ptr = &ftrace->graph_depth },
+		{ .name = NULL, }
+	};
+
+	if (unset)
+		return 0;
+
+	ret = perf_parse_sublevel_options(str, graph_tracer_opts);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static void select_tracer(struct perf_ftrace *ftrace)
+{
+	bool graph = !list_empty(&ftrace->graph_funcs) ||
+		     !list_empty(&ftrace->nograph_funcs);
+	bool func = !list_empty(&ftrace->filters) ||
+		    !list_empty(&ftrace->notrace);
+
+	/* The function_graph has priority over function tracer. */
+	if (graph)
+		ftrace->tracer = "function_graph";
+	else if (func)
+		ftrace->tracer = "function";
+	/* Otherwise, the default tracer is used. */
+
+	pr_debug("%s tracer is used\n", ftrace->tracer);
+}
+
 int cmd_ftrace(int argc, const char **argv)
 {
 	int ret;
@@ -469,25 +816,42 @@ int cmd_ftrace(int argc, const char **argv)
 	};
 	const struct option ftrace_options[] = {
 	OPT_STRING('t', "tracer", &ftrace.tracer, "tracer",
-		   "tracer to use: function_graph(default) or function"),
+		   "Tracer to use: function_graph(default) or function"),
+	OPT_BOOLEAN('F', "funcs", &ftrace.list_avail_functions,
+		    "Show available functions to filter"),
 	OPT_STRING('p', "pid", &ftrace.target.pid, "pid",
-		   "trace on existing process id"),
+		   "Trace on existing process id"),
+	/* TODO: Add short option -t after -t/--tracer can be removed. */
+	OPT_STRING(0, "tid", &ftrace.target.tid, "tid",
+		   "Trace on existing thread id (exclusive to --pid)"),
 	OPT_INCR('v', "verbose", &verbose,
-		 "be more verbose"),
+		 "Be more verbose"),
 	OPT_BOOLEAN('a', "all-cpus", &ftrace.target.system_wide,
-		    "system-wide collection from all CPUs"),
+		    "System-wide collection from all CPUs"),
 	OPT_STRING('C', "cpu", &ftrace.target.cpu_list, "cpu",
-		    "list of cpus to monitor"),
+		    "List of cpus to monitor"),
 	OPT_CALLBACK('T', "trace-funcs", &ftrace.filters, "func",
-		     "trace given functions only", parse_filter_func),
+		     "Trace given functions using function tracer",
+		     parse_filter_func),
 	OPT_CALLBACK('N', "notrace-funcs", &ftrace.notrace, "func",
-		     "do not trace given functions", parse_filter_func),
+		     "Do not trace given functions", parse_filter_func),
+	OPT_CALLBACK(0, "func-opts", &ftrace, "options",
+		     "Function tracer options, available options: call-graph,irq-info",
+		     parse_func_tracer_opts),
 	OPT_CALLBACK('G', "graph-funcs", &ftrace.graph_funcs, "func",
-		     "Set graph filter on given functions", parse_filter_func),
+		     "Trace given functions using function_graph tracer",
+		     parse_filter_func),
 	OPT_CALLBACK('g', "nograph-funcs", &ftrace.nograph_funcs, "func",
 		     "Set nograph filter on given functions", parse_filter_func),
-	OPT_INTEGER('D', "graph-depth", &ftrace.graph_depth,
-		    "Max depth for function graph tracer"),
+	OPT_CALLBACK(0, "graph-opts", &ftrace, "options",
+		     "Graph tracer options, available options: nosleep-time,noirqs,verbose,thresh=<n>,depth=<n>",
+		     parse_graph_tracer_opts),
+	OPT_CALLBACK('m', "buffer-size", &ftrace.percpu_buffer_size, "size",
+		     "Size of per cpu buffer, needs to use a B, K, M or G suffix.", parse_buffer_size),
+	OPT_BOOLEAN(0, "inherit", &ftrace.inherit,
+		    "Trace children processes"),
+	OPT_UINTEGER('D', "delay", &ftrace.initial_delay,
+		     "Number of milliseconds to wait before starting tracing after program start"),
 	OPT_END()
 	};
 
@@ -505,6 +869,8 @@ int cmd_ftrace(int argc, const char **argv)
 	if (!argc && target__none(&ftrace.target))
 		ftrace.target.system_wide = true;
 
+	select_tracer(&ftrace);
+
 	ret = target__validate(&ftrace.target);
 	if (ret) {
 		char errbuf[512];

tools/perf/builtin-sched.c

@@ -2398,6 +2398,15 @@ static void timehist_print_wakeup_event(struct perf_sched *sched,
 	printf("\n");
 }
 
+static int timehist_sched_wakeup_ignore(struct perf_tool *tool __maybe_unused,
+					union perf_event *event __maybe_unused,
+					struct evsel *evsel __maybe_unused,
+					struct perf_sample *sample __maybe_unused,
+					struct machine *machine __maybe_unused)
+{
+	return 0;
+}
+
 static int timehist_sched_wakeup_event(struct perf_tool *tool,
 				       union perf_event *event __maybe_unused,
 				       struct evsel *evsel,
@@ -2958,9 +2967,10 @@ static int timehist_check_attr(struct perf_sched *sched,
 
 static int perf_sched__timehist(struct perf_sched *sched)
 {
-	const struct evsel_str_handler handlers[] = {
+	struct evsel_str_handler handlers[] = {
 		{ "sched:sched_switch",       timehist_sched_switch_event, },
 		{ "sched:sched_wakeup",	      timehist_sched_wakeup_event, },
+		{ "sched:sched_waking",       timehist_sched_wakeup_event, },
 		{ "sched:sched_wakeup_new",   timehist_sched_wakeup_event, },
 	};
 	const struct evsel_str_handler migrate_handlers[] = {
@@ -3018,6 +3028,11 @@ static int perf_sched__timehist(struct perf_sched *sched)
 
 	setup_pager();
 
+	/* prefer sched_waking if it is captured */
+	if (perf_evlist__find_tracepoint_by_name(session->evlist,
+						  "sched:sched_waking"))
+		handlers[1].handler = timehist_sched_wakeup_ignore;
+
 	/* setup per-evsel handlers */
 	if (perf_session__set_tracepoints_handlers(session, handlers))
 		goto out;
@@ -3330,12 +3345,16 @@ static int __cmd_record(int argc, const char **argv)
 		"-e", "sched:sched_stat_iowait",
 		"-e", "sched:sched_stat_runtime",
 		"-e", "sched:sched_process_fork",
-		"-e", "sched:sched_wakeup",
 		"-e", "sched:sched_wakeup_new",
 		"-e", "sched:sched_migrate_task",
 	};
+	struct tep_event *waking_event;
 
-	rec_argc = ARRAY_SIZE(record_args) + argc - 1;
+	/*
+	 * +2 for either "-e", "sched:sched_wakeup" or
+	 * "-e", "sched:sched_waking"
+	 */
+	rec_argc = ARRAY_SIZE(record_args) + 2 + argc - 1;
 	rec_argv = calloc(rec_argc + 1, sizeof(char *));
 
 	if (rec_argv == NULL)
@@ -3344,6 +3363,13 @@ static int __cmd_record(int argc, const char **argv)
 	for (i = 0; i < ARRAY_SIZE(record_args); i++)
 		rec_argv[i] = strdup(record_args[i]);
 
+	rec_argv[i++] = "-e";
+	waking_event = trace_event__tp_format("sched", "sched_waking");
+	if (!IS_ERR(waking_event))
+		rec_argv[i++] = strdup("sched:sched_waking");
+	else
+		rec_argv[i++] = strdup("sched:sched_wakeup");
+
 	for (j = 1; j < (unsigned int)argc; j++, i++)
 		rec_argv[i] = argv[j];
 

tools/perf/check-headers.sh

@@ -128,6 +128,9 @@ check arch/x86/lib/insn.c             '-I "^#include [\"<]\(../include/\)*asm/in
 # diff non-symmetric files
 check_2 tools/perf/arch/x86/entry/syscalls/syscall_64.tbl arch/x86/entry/syscalls/syscall_64.tbl
 
+# These will require a beauty_check when we get some more like that
+check_2 tools/perf/trace/beauty/include/linux/socket.h include/linux/socket.h
+
 # check duplicated library files
 check_2 tools/perf/util/hashmap.h tools/lib/bpf/hashmap.h
 check_2 tools/perf/util/hashmap.c tools/lib/bpf/hashmap.c

tools/perf/pmu-events/arch/powerpc/power9/metrics.json

@@ -60,7 +60,7 @@
     },
     {
         "BriefDescription": "Stalls due to short latency decimal floating ops.",
-        "MetricExpr": "(PM_CMPLU_STALL_DFU - PM_CMPLU_STALL_DFLONG)/PM_RUN_INST_CMPL",
+        "MetricExpr": "dfu_stall_cpi - dflong_stall_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "dfu_other_stall_cpi"
     },
@@ -72,7 +72,7 @@
     },
     {
         "BriefDescription": "Completion stall by Dcache miss which resolved off node memory/cache",
-        "MetricExpr": "(PM_CMPLU_STALL_DMISS_L3MISS - PM_CMPLU_STALL_DMISS_L21_L31 - PM_CMPLU_STALL_DMISS_LMEM - PM_CMPLU_STALL_DMISS_REMOTE)/PM_RUN_INST_CMPL",
+        "MetricExpr": "dmiss_non_local_stall_cpi - dmiss_remote_stall_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "dmiss_distant_stall_cpi"
     },
@@ -90,7 +90,7 @@
     },
     {
         "BriefDescription": "Completion stall due to cache miss that resolves in the L2 or L3 without conflict",
-        "MetricExpr": "(PM_CMPLU_STALL_DMISS_L2L3 - PM_CMPLU_STALL_DMISS_L2L3_CONFLICT)/PM_RUN_INST_CMPL",
+        "MetricExpr": "dmiss_l2l3_stall_cpi - dmiss_l2l3_conflict_stall_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "dmiss_l2l3_noconflict_stall_cpi"
     },
@@ -114,7 +114,7 @@
     },
     {
         "BriefDescription": "Completion stall by Dcache miss which resolved outside of local memory",
-        "MetricExpr": "(PM_CMPLU_STALL_DMISS_L3MISS - PM_CMPLU_STALL_DMISS_L21_L31 - PM_CMPLU_STALL_DMISS_LMEM)/PM_RUN_INST_CMPL",
+        "MetricExpr": "dmiss_l3miss_stall_cpi - dmiss_l21_l31_stall_cpi - dmiss_lmem_stall_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "dmiss_non_local_stall_cpi"
     },
@@ -126,7 +126,7 @@
     },
     {
         "BriefDescription": "Stalls due to short latency double precision ops.",
-        "MetricExpr": "(PM_CMPLU_STALL_DP - PM_CMPLU_STALL_DPLONG)/PM_RUN_INST_CMPL",
+        "MetricExpr": "dp_stall_cpi - dplong_stall_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "dp_other_stall_cpi"
     },
@@ -155,7 +155,7 @@
         "MetricName": "emq_full_stall_cpi"
     },
     {
-        "MetricExpr": "(PM_CMPLU_STALL_ERAT_MISS + PM_CMPLU_STALL_EMQ_FULL)/PM_RUN_INST_CMPL",
+        "MetricExpr": "erat_miss_stall_cpi + emq_full_stall_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "emq_stall_cpi"
     },
@@ -173,7 +173,7 @@
     },
     {
         "BriefDescription": "Completion stall due to execution units for other reasons.",
-        "MetricExpr": "(PM_CMPLU_STALL_EXEC_UNIT - PM_CMPLU_STALL_FXU - PM_CMPLU_STALL_DP - PM_CMPLU_STALL_DFU - PM_CMPLU_STALL_PM - PM_CMPLU_STALL_CRYPTO - PM_CMPLU_STALL_VFXU - PM_CMPLU_STALL_VDP)/PM_RUN_INST_CMPL",
+        "MetricExpr": "exec_unit_stall_cpi - scalar_stall_cpi - vector_stall_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "exec_unit_other_stall_cpi"
     },
@@ -197,7 +197,7 @@
     },
     {
         "BriefDescription": "Stalls due to short latency integer ops",
-        "MetricExpr": "(PM_CMPLU_STALL_FXU - PM_CMPLU_STALL_FXLONG)/PM_RUN_INST_CMPL",
+        "MetricExpr": "fxu_stall_cpi - fxlong_stall_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "fxu_other_stall_cpi"
     },
@@ -221,7 +221,7 @@
     },
     {
         "BriefDescription": "Instruction Completion Table other stalls",
-        "MetricExpr": "(PM_ICT_NOSLOT_CYC - PM_ICT_NOSLOT_IC_MISS - PM_ICT_NOSLOT_BR_MPRED_ICMISS - PM_ICT_NOSLOT_BR_MPRED - PM_ICT_NOSLOT_DISP_HELD)/PM_RUN_INST_CMPL",
+        "MetricExpr": "nothing_dispatched_cpi - ict_noslot_ic_miss_cpi - ict_noslot_br_mpred_icmiss_cpi - ict_noslot_br_mpred_cpi - ict_noslot_disp_held_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "ict_noslot_cyc_other_cpi"
     },
@@ -245,7 +245,7 @@
     },
     {
         "BriefDescription": "ICT_NOSLOT_DISP_HELD_OTHER_CPI",
-        "MetricExpr": "(PM_ICT_NOSLOT_DISP_HELD - PM_ICT_NOSLOT_DISP_HELD_HB_FULL - PM_ICT_NOSLOT_DISP_HELD_SYNC - PM_ICT_NOSLOT_DISP_HELD_TBEGIN - PM_ICT_NOSLOT_DISP_HELD_ISSQ)/PM_RUN_INST_CMPL",
+        "MetricExpr": "ict_noslot_disp_held_cpi - ict_noslot_disp_held_hb_full_cpi - ict_noslot_disp_held_sync_cpi - ict_noslot_disp_held_tbegin_cpi - ict_noslot_disp_held_issq_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "ict_noslot_disp_held_other_cpi"
     },
@@ -263,7 +263,7 @@
     },
     {
         "BriefDescription": "ICT_NOSLOT_IC_L2_CPI",
-        "MetricExpr": "(PM_ICT_NOSLOT_IC_MISS - PM_ICT_NOSLOT_IC_L3 - PM_ICT_NOSLOT_IC_L3MISS)/PM_RUN_INST_CMPL",
+        "MetricExpr": "ict_noslot_ic_miss_cpi - ict_noslot_ic_l3_cpi - ict_noslot_ic_l3miss_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "ict_noslot_ic_l2_cpi"
     },
@@ -286,7 +286,7 @@
         "MetricName": "ict_noslot_ic_miss_cpi"
     },
     {
-        "MetricExpr": "(PM_NTC_ISSUE_HELD_DARQ_FULL + PM_NTC_ISSUE_HELD_ARB + PM_NTC_ISSUE_HELD_OTHER)/PM_RUN_INST_CMPL",
+        "MetricExpr": "ntc_issue_held_darq_full_cpi + ntc_issue_held_arb_cpi + ntc_issue_held_other_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "issue_hold_cpi"
     },
@@ -327,7 +327,7 @@
         "MetricName": "lrq_other_stall_cpi"
     },
     {
-        "MetricExpr": "(PM_CMPLU_STALL_LMQ_FULL + PM_CMPLU_STALL_ST_FWD + PM_CMPLU_STALL_LHS + PM_CMPLU_STALL_LSU_MFSPR + PM_CMPLU_STALL_LARX + PM_CMPLU_STALL_LRQ_OTHER)/PM_RUN_INST_CMPL",
+        "MetricExpr": "lmq_full_stall_cpi + st_fwd_stall_cpi + lhs_stall_cpi + lsu_mfspr_stall_cpi + larx_stall_cpi + lrq_other_stall_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "lrq_stall_cpi"
     },
@@ -338,7 +338,7 @@
         "MetricName": "lsaq_arb_stall_cpi"
     },
     {
-        "MetricExpr": "(PM_CMPLU_STALL_LRQ_FULL + PM_CMPLU_STALL_SRQ_FULL + PM_CMPLU_STALL_LSAQ_ARB)/PM_RUN_INST_CMPL",
+        "MetricExpr": "lrq_full_stall_cpi + srq_full_stall_cpi + lsaq_arb_stall_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "lsaq_stall_cpi"
     },
@@ -362,7 +362,7 @@
     },
     {
         "BriefDescription": "Completion LSU stall for other reasons",
-        "MetricExpr": "(PM_CMPLU_STALL_LSU - PM_CMPLU_STALL_LSU_FIN - PM_CMPLU_STALL_STORE_FINISH - PM_CMPLU_STALL_STORE_DATA - PM_CMPLU_STALL_EIEIO - PM_CMPLU_STALL_STCX - PM_CMPLU_STALL_SLB - PM_CMPLU_STALL_TEND - PM_CMPLU_STALL_PASTE - PM_CMPLU_STALL_TLBIE - PM_CMPLU_STALL_STORE_PIPE_ARB - PM_CMPLU_STALL_STORE_FIN_ARB - PM_CMPLU_STALL_LOAD_FINISH + PM_CMPLU_STALL_DCACHE_MISS - PM_CMPLU_STALL_LMQ_FULL - PM_CMPLU_STALL_ST_FWD - PM_CMPLU_STALL_LHS - PM_CMPLU_STALL_LSU_MFSPR - PM_CMPLU_STALL_LARX - PM_CMPLU_STALL_LRQ_OTHER + PM_CMPLU_STALL_ERAT_MISS + PM_CMPLU_STALL_EMQ_FULL - PM_CMPLU_STALL_LRQ_FULL - PM_CMPLU_STALL_SRQ_FULL - PM_CMPLU_STALL_LSAQ_ARB) / PM_RUN_INST_CMPL",
+        "MetricExpr": "lsu_stall_cpi - lsu_fin_stall_cpi - store_finish_stall_cpi - srq_stall_cpi - load_finish_stall_cpi + lsu_stall_dcache_miss_cpi - lrq_stall_cpi + emq_stall_cpi - lsaq_stall_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "lsu_other_stall_cpi"
     },
@@ -434,13 +434,13 @@
     },
     {
         "BriefDescription": "Cycles unaccounted for.",
-        "MetricExpr": "(PM_RUN_CYC - PM_1PLUS_PPC_CMPL - PM_CMPLU_STALL_THRD - PM_CMPLU_STALL - PM_ICT_NOSLOT_CYC)/PM_RUN_INST_CMPL",
+        "MetricExpr": "run_cpi - completion_cpi - thread_block_stall_cpi - stall_cpi - nothing_dispatched_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "other_cpi"
     },
     {
         "BriefDescription": "Completion stall for other reasons",
-        "MetricExpr": "(PM_CMPLU_STALL - PM_CMPLU_STALL_NTC_DISP_FIN - PM_CMPLU_STALL_NTC_FLUSH - PM_CMPLU_STALL_LSU - PM_CMPLU_STALL_EXEC_UNIT - PM_CMPLU_STALL_BRU)/PM_RUN_INST_CMPL",
+        "MetricExpr": "stall_cpi - ntc_disp_fin_stall_cpi - ntc_flush_stall_cpi - lsu_stall_cpi - exec_unit_stall_cpi - bru_stall_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "other_stall_cpi"
     },
@@ -469,7 +469,7 @@
         "MetricName": "run_cyc_cpi"
     },
     {
-        "MetricExpr": "(PM_CMPLU_STALL_FXU + PM_CMPLU_STALL_DP + PM_CMPLU_STALL_DFU + PM_CMPLU_STALL_PM + PM_CMPLU_STALL_CRYPTO)/PM_RUN_INST_CMPL",
+        "MetricExpr": "fxu_stall_cpi + dp_stall_cpi + dfu_stall_cpi + pm_stall_cpi + crypto_stall_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "scalar_stall_cpi"
     },
@@ -492,7 +492,7 @@
         "MetricName": "srq_full_stall_cpi"
     },
     {
-        "MetricExpr": "(PM_CMPLU_STALL_STORE_DATA + PM_CMPLU_STALL_EIEIO + PM_CMPLU_STALL_STCX + PM_CMPLU_STALL_SLB + PM_CMPLU_STALL_TEND + PM_CMPLU_STALL_PASTE + PM_CMPLU_STALL_TLBIE + PM_CMPLU_STALL_STORE_PIPE_ARB + PM_CMPLU_STALL_STORE_FIN_ARB)/PM_RUN_INST_CMPL",
+        "MetricExpr": "store_data_stall_cpi + eieio_stall_cpi + stcx_stall_cpi + slb_stall_cpi + tend_stall_cpi + paste_stall_cpi + tlbie_stall_cpi + store_pipe_arb_stall_cpi + store_fin_arb_stall_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "srq_stall_cpi"
     },
@@ -558,7 +558,7 @@
     },
     {
         "BriefDescription": "Vector stalls due to small latency double precision ops",
-        "MetricExpr": "(PM_CMPLU_STALL_VDP - PM_CMPLU_STALL_VDPLONG)/PM_RUN_INST_CMPL",
+        "MetricExpr": "vdp_stall_cpi - vdplong_stall_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "vdp_other_stall_cpi"
     },
@@ -575,7 +575,7 @@
         "MetricName": "vdplong_stall_cpi"
     },
     {
-        "MetricExpr": "(PM_CMPLU_STALL_VFXU + PM_CMPLU_STALL_VDP)/PM_RUN_INST_CMPL",
+        "MetricExpr": "vfxu_stall_cpi + vdp_stall_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "vector_stall_cpi"
     },
@@ -587,7 +587,7 @@
     },
     {
         "BriefDescription": "Vector stalls due to small latency integer ops",
-        "MetricExpr": "(PM_CMPLU_STALL_VFXU - PM_CMPLU_STALL_VFXLONG)/PM_RUN_INST_CMPL",
+        "MetricExpr": "vfxu_stall_cpi - vfxlong_stall_cpi",
         "MetricGroup": "cpi_breakdown",
         "MetricName": "vfxu_other_stall_cpi"
     },
@@ -1844,7 +1844,7 @@
     },
     {
         "BriefDescription": "% of DL1 reloads from Private L3, other core per Inst",
-        "MetricExpr": "(PM_DATA_FROM_L31_MOD + PM_DATA_FROM_L31_SHR) * 100 / PM_RUN_INST_CMPL",
+        "MetricExpr": "dl1_reload_from_l31_mod_rate_percent + dl1_reload_from_l31_shr_rate_percent",
         "MetricName": "dl1_reload_from_l31_rate_percent"
     },
     {
@@ -1979,7 +1979,7 @@
     },
     {
         "BriefDescription": "Completion stall because a different thread was using the completion pipe",
-        "MetricExpr": "(PM_CMPLU_STALL_THRD - PM_CMPLU_STALL_EXCEPTION - PM_CMPLU_STALL_ANY_SYNC - PM_CMPLU_STALL_SYNC_PMU_INT - PM_CMPLU_STALL_SPEC_FINISH - PM_CMPLU_STALL_FLUSH_ANY_THREAD - PM_CMPLU_STALL_LSU_FLUSH_NEXT - PM_CMPLU_STALL_NESTED_TBEGIN - PM_CMPLU_STALL_NESTED_TEND - PM_CMPLU_STALL_MTFPSCR)/PM_RUN_INST_CMPL",
+        "MetricExpr": "thread_block_stall_cpi - exception_stall_cpi - any_sync_stall_cpi - sync_pmu_int_stall_cpi - spec_finish_stall_cpi - flush_any_thread_stall_cpi - lsu_flush_next_stall_cpi - nested_tbegin_stall_cpi - nested_tend_stall_cpi - mtfpscr_stall_cpi",
         "MetricName": "other_thread_cmpl_stall"
     },
     {

tools/perf/tests/shell/record+script_probe_vfs_getname.sh

@@ -20,13 +20,13 @@ file=$(mktemp /tmp/temporary_file.XXXXX)
 
 record_open_file() {
 	echo "Recording open file:"
-	perf record -o ${perfdata} -e probe:vfs_getname touch $file
+	perf record -o ${perfdata} -e probe:vfs_getname\* touch $file
 }
 
 perf_script_filenames() {
 	echo "Looking at perf.data file for vfs_getname records for the file we touched:"
 	perf script -i ${perfdata} | \
-	egrep " +touch +[0-9]+ +\[[0-9]+\] +[0-9]+\.[0-9]+: +probe:vfs_getname: +\([[:xdigit:]]+\) +pathname=\"${file}\""
+	egrep " +touch +[0-9]+ +\[[0-9]+\] +[0-9]+\.[0-9]+: +probe:vfs_getname[_0-9]*: +\([[:xdigit:]]+\) +pathname=\"${file}\""
 }
 
 add_probe_vfs_getname || skip_if_no_debuginfo

tools/perf/trace/beauty/include/linux/socket.h

+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_SOCKET_H
+#define _LINUX_SOCKET_H
+
+
+#include <asm/socket.h>			/* arch-dependent defines	*/
+#include <linux/sockios.h>		/* the SIOCxxx I/O controls	*/
+#include <linux/uio.h>			/* iovec support		*/
+#include <linux/types.h>		/* pid_t			*/
+#include <linux/compiler.h>		/* __user			*/
+#include <uapi/linux/socket.h>
+
+struct file;
+struct pid;
+struct cred;
+struct socket;
+
+#define __sockaddr_check_size(size)	\
+	BUILD_BUG_ON(((size) > sizeof(struct __kernel_sockaddr_storage)))
+
+#ifdef CONFIG_PROC_FS
+struct seq_file;
+extern void socket_seq_show(struct seq_file *seq);
+#endif
+
+typedef __kernel_sa_family_t	sa_family_t;
+
+/*
+ *	1003.1g requires sa_family_t and that sa_data is char.
+ */
+
+struct sockaddr {
+	sa_family_t	sa_family;	/* address family, AF_xxx	*/
+	char		sa_data[14];	/* 14 bytes of protocol address	*/
+};
+
+struct linger {
+	int		l_onoff;	/* Linger active		*/
+	int		l_linger;	/* How long to linger for	*/
+};
+
+#define sockaddr_storage __kernel_sockaddr_storage
+
+/*
+ *	As we do 4.4BSD message passing we use a 4.4BSD message passing
+ *	system, not 4.3. Thus msg_accrights(len) are now missing. They
+ *	belong in an obscure libc emulation or the bin.
+ */
+
+struct msghdr {
+	void		*msg_name;	/* ptr to socket address structure */
+	int		msg_namelen;	/* size of socket address structure */
+	struct iov_iter	msg_iter;	/* data */
+
+	/*
+	 * Ancillary data. msg_control_user is the user buffer used for the
+	 * recv* side when msg_control_is_user is set, msg_control is the kernel
+	 * buffer used for all other cases.
+	 */
+	union {
+		void		*msg_control;
+		void __user	*msg_control_user;
+	};
+	bool		msg_control_is_user : 1;
+	__kernel_size_t	msg_controllen;	/* ancillary data buffer length */
+	unsigned int	msg_flags;	/* flags on received message */
+	struct kiocb	*msg_iocb;	/* ptr to iocb for async requests */
+};
+
+struct user_msghdr {
+	void		__user *msg_name;	/* ptr to socket address structure */
+	int		msg_namelen;		/* size of socket address structure */
+	struct iovec	__user *msg_iov;	/* scatter/gather array */
+	__kernel_size_t	msg_iovlen;		/* # elements in msg_iov */
+	void		__user *msg_control;	/* ancillary data */
+	__kernel_size_t	msg_controllen;		/* ancillary data buffer length */
+	unsigned int	msg_flags;		/* flags on received message */
+};
+
+/* For recvmmsg/sendmmsg */
+struct mmsghdr {
+	struct user_msghdr  msg_hdr;
+	unsigned int        msg_len;
+};
+
+/*
+ *	POSIX 1003.1g - ancillary data object information
+ *	Ancillary data consits of a sequence of pairs of
+ *	(cmsghdr, cmsg_data[])
+ */
+
+struct cmsghdr {
+	__kernel_size_t	cmsg_len;	/* data byte count, including hdr */
+        int		cmsg_level;	/* originating protocol */
+        int		cmsg_type;	/* protocol-specific type */
+};
+
+/*
+ *	Ancillary data object information MACROS
+ *	Table 5-14 of POSIX 1003.1g
+ */
+
+#define __CMSG_NXTHDR(ctl, len, cmsg) __cmsg_nxthdr((ctl),(len),(cmsg))
+#define CMSG_NXTHDR(mhdr, cmsg) cmsg_nxthdr((mhdr), (cmsg))
+
+#define CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) )
+
+#define CMSG_DATA(cmsg) \
+	((void *)(cmsg) + sizeof(struct cmsghdr))
+#define CMSG_USER_DATA(cmsg) \
+	((void __user *)(cmsg) + sizeof(struct cmsghdr))
+#define CMSG_SPACE(len) (sizeof(struct cmsghdr) + CMSG_ALIGN(len))
+#define CMSG_LEN(len) (sizeof(struct cmsghdr) + (len))
+
+#define __CMSG_FIRSTHDR(ctl,len) ((len) >= sizeof(struct cmsghdr) ? \
+				  (struct cmsghdr *)(ctl) : \
+				  (struct cmsghdr *)NULL)
+#define CMSG_FIRSTHDR(msg)	__CMSG_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen)
+#define CMSG_OK(mhdr, cmsg) ((cmsg)->cmsg_len >= sizeof(struct cmsghdr) && \
+			     (cmsg)->cmsg_len <= (unsigned long) \
+			     ((mhdr)->msg_controllen - \
+			      ((char *)(cmsg) - (char *)(mhdr)->msg_control)))
+#define for_each_cmsghdr(cmsg, msg) \
+	for (cmsg = CMSG_FIRSTHDR(msg); \
+	     cmsg; \
+	     cmsg = CMSG_NXTHDR(msg, cmsg))
+
+/*
+ *	Get the next cmsg header
+ *
+ *	PLEASE, do not touch this function. If you think, that it is
+ *	incorrect, grep kernel sources and think about consequences
+ *	before trying to improve it.
+ *
+ *	Now it always returns valid, not truncated ancillary object
+ *	HEADER. But caller still MUST check, that cmsg->cmsg_len is
+ *	inside range, given by msg->msg_controllen before using
+ *	ancillary object DATA.				--ANK (980731)
+ */
+
+static inline struct cmsghdr * __cmsg_nxthdr(void *__ctl, __kernel_size_t __size,
+					       struct cmsghdr *__cmsg)
+{
+	struct cmsghdr * __ptr;
+
+	__ptr = (struct cmsghdr*)(((unsigned char *) __cmsg) +  CMSG_ALIGN(__cmsg->cmsg_len));
+	if ((unsigned long)((char*)(__ptr+1) - (char *) __ctl) > __size)
+		return (struct cmsghdr *)0;
+
+	return __ptr;
+}
+
+static inline struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr *__cmsg)
+{
+	return __cmsg_nxthdr(__msg->msg_control, __msg->msg_controllen, __cmsg);
+}
+
+static inline size_t msg_data_left(struct msghdr *msg)
+{
+	return iov_iter_count(&msg->msg_iter);
+}
+
+/* "Socket"-level control message types: */
+
+#define	SCM_RIGHTS	0x01		/* rw: access rights (array of int) */
+#define SCM_CREDENTIALS 0x02		/* rw: struct ucred		*/
+#define SCM_SECURITY	0x03		/* rw: security label		*/
+
+struct ucred {
+	__u32	pid;
+	__u32	uid;
+	__u32	gid;
+};
+
+/* Supported address families. */
+#define AF_UNSPEC	0
+#define AF_UNIX		1	/* Unix domain sockets 		*/
+#define AF_LOCAL	1	/* POSIX name for AF_UNIX	*/
+#define AF_INET		2	/* Internet IP Protocol 	*/
+#define AF_AX25		3	/* Amateur Radio AX.25 		*/
+#define AF_IPX		4	/* Novell IPX 			*/
+#define AF_APPLETALK	5	/* AppleTalk DDP 		*/
+#define AF_NETROM	6	/* Amateur Radio NET/ROM 	*/
+#define AF_BRIDGE	7	/* Multiprotocol bridge 	*/
+#define AF_ATMPVC	8	/* ATM PVCs			*/
+#define AF_X25		9	/* Reserved for X.25 project 	*/
+#define AF_INET6	10	/* IP version 6			*/
+#define AF_ROSE		11	/* Amateur Radio X.25 PLP	*/
+#define AF_DECnet	12	/* Reserved for DECnet project	*/
+#define AF_NETBEUI	13	/* Reserved for 802.2LLC project*/
+#define AF_SECURITY	14	/* Security callback pseudo AF */
+#define AF_KEY		15      /* PF_KEY key management API */
+#define AF_NETLINK	16
+#define AF_ROUTE	AF_NETLINK /* Alias to emulate 4.4BSD */
+#define AF_PACKET	17	/* Packet family		*/
+#define AF_ASH		18	/* Ash				*/
+#define AF_ECONET	19	/* Acorn Econet			*/
+#define AF_ATMSVC	20	/* ATM SVCs			*/
+#define AF_RDS		21	/* RDS sockets 			*/
+#define AF_SNA		22	/* Linux SNA Project (nutters!) */
+#define AF_IRDA		23	/* IRDA sockets			*/
+#define AF_PPPOX	24	/* PPPoX sockets		*/
+#define AF_WANPIPE	25	/* Wanpipe API Sockets */
+#define AF_LLC		26	/* Linux LLC			*/
+#define AF_IB		27	/* Native InfiniBand address	*/
+#define AF_MPLS		28	/* MPLS */
+#define AF_CAN		29	/* Controller Area Network      */
+#define AF_TIPC		30	/* TIPC sockets			*/
+#define AF_BLUETOOTH	31	/* Bluetooth sockets 		*/
+#define AF_IUCV		32	/* IUCV sockets			*/
+#define AF_RXRPC	33	/* RxRPC sockets 		*/
+#define AF_ISDN		34	/* mISDN sockets 		*/
+#define AF_PHONET	35	/* Phonet sockets		*/
+#define AF_IEEE802154	36	/* IEEE802154 sockets		*/
+#define AF_CAIF		37	/* CAIF sockets			*/
+#define AF_ALG		38	/* Algorithm sockets		*/
+#define AF_NFC		39	/* NFC sockets			*/
+#define AF_VSOCK	40	/* vSockets			*/
+#define AF_KCM		41	/* Kernel Connection Multiplexor*/
+#define AF_QIPCRTR	42	/* Qualcomm IPC Router          */
+#define AF_SMC		43	/* smc sockets: reserve number for
+				 * PF_SMC protocol family that
+				 * reuses AF_INET address family
+				 */
+#define AF_XDP		44	/* XDP sockets			*/
+
+#define AF_MAX		45	/* For now.. */
+
+/* Protocol families, same as address families. */
+#define PF_UNSPEC	AF_UNSPEC
+#define PF_UNIX		AF_UNIX
+#define PF_LOCAL	AF_LOCAL
+#define PF_INET		AF_INET
+#define PF_AX25		AF_AX25
+#define PF_IPX		AF_IPX
+#define PF_APPLETALK	AF_APPLETALK
+#define	PF_NETROM	AF_NETROM
+#define PF_BRIDGE	AF_BRIDGE
+#define PF_ATMPVC	AF_ATMPVC
+#define PF_X25		AF_X25
+#define PF_INET6	AF_INET6
+#define PF_ROSE		AF_ROSE
+#define PF_DECnet	AF_DECnet
+#define PF_NETBEUI	AF_NETBEUI
+#define PF_SECURITY	AF_SECURITY
+#define PF_KEY		AF_KEY
+#define PF_NETLINK	AF_NETLINK
+#define PF_ROUTE	AF_ROUTE
+#define PF_PACKET	AF_PACKET
+#define PF_ASH		AF_ASH
+#define PF_ECONET	AF_ECONET
+#define PF_ATMSVC	AF_ATMSVC
+#define PF_RDS		AF_RDS
+#define PF_SNA		AF_SNA
+#define PF_IRDA		AF_IRDA
+#define PF_PPPOX	AF_PPPOX
+#define PF_WANPIPE	AF_WANPIPE
+#define PF_LLC		AF_LLC
+#define PF_IB		AF_IB
+#define PF_MPLS		AF_MPLS
+#define PF_CAN		AF_CAN
+#define PF_TIPC		AF_TIPC
+#define PF_BLUETOOTH	AF_BLUETOOTH
+#define PF_IUCV		AF_IUCV
+#define PF_RXRPC	AF_RXRPC
+#define PF_ISDN		AF_ISDN
+#define PF_PHONET	AF_PHONET
+#define PF_IEEE802154	AF_IEEE802154
+#define PF_CAIF		AF_CAIF
+#define PF_ALG		AF_ALG
+#define PF_NFC		AF_NFC
+#define PF_VSOCK	AF_VSOCK
+#define PF_KCM		AF_KCM
+#define PF_QIPCRTR	AF_QIPCRTR
+#define PF_SMC		AF_SMC
+#define PF_XDP		AF_XDP
+#define PF_MAX		AF_MAX
+
+/* Maximum queue length specifiable by listen.  */
+#define SOMAXCONN	4096
+
+/* Flags we can use with send/ and recv.
+   Added those for 1003.1g not all are supported yet
+ */
+
+#define MSG_OOB		1
+#define MSG_PEEK	2
+#define MSG_DONTROUTE	4
+#define MSG_TRYHARD     4       /* Synonym for MSG_DONTROUTE for DECnet */
+#define MSG_CTRUNC	8
+#define MSG_PROBE	0x10	/* Do not send. Only probe path f.e. for MTU */
+#define MSG_TRUNC	0x20
+#define MSG_DONTWAIT	0x40	/* Nonblocking io		 */
+#define MSG_EOR         0x80	/* End of record */
+#define MSG_WAITALL	0x100	/* Wait for a full request */
+#define MSG_FIN         0x200
+#define MSG_SYN		0x400
+#define MSG_CONFIRM	0x800	/* Confirm path validity */
+#define MSG_RST		0x1000
+#define MSG_ERRQUEUE	0x2000	/* Fetch message from error queue */
+#define MSG_NOSIGNAL	0x4000	/* Do not generate SIGPIPE */
+#define MSG_MORE	0x8000	/* Sender will send more */
+#define MSG_WAITFORONE	0x10000	/* recvmmsg(): block until 1+ packets avail */
+#define MSG_SENDPAGE_NOPOLICY 0x10000 /* sendpage() internal : do no apply policy */
+#define MSG_SENDPAGE_NOTLAST 0x20000 /* sendpage() internal : not the last page */
+#define MSG_BATCH	0x40000 /* sendmmsg(): more messages coming */
+#define MSG_EOF         MSG_FIN
+#define MSG_NO_SHARED_FRAGS 0x80000 /* sendpage() internal : page frags are not shared */
+#define MSG_SENDPAGE_DECRYPTED	0x100000 /* sendpage() internal : page may carry
+					  * plain text and require encryption
+					  */
+
+#define MSG_ZEROCOPY	0x4000000	/* Use user data in kernel path */
+#define MSG_FASTOPEN	0x20000000	/* Send data in TCP SYN */
+#define MSG_CMSG_CLOEXEC 0x40000000	/* Set close_on_exec for file
+					   descriptor received through
+					   SCM_RIGHTS */
+#if defined(CONFIG_COMPAT)
+#define MSG_CMSG_COMPAT	0x80000000	/* This message needs 32 bit fixups */
+#else
+#define MSG_CMSG_COMPAT	0		/* We never have 32 bit fixups */
+#endif
+
+
+/* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */
+#define SOL_IP		0
+/* #define SOL_ICMP	1	No-no-no! Due to Linux :-) we cannot use SOL_ICMP=1 */
+#define SOL_TCP		6
+#define SOL_UDP		17
+#define SOL_IPV6	41
+#define SOL_ICMPV6	58
+#define SOL_SCTP	132
+#define SOL_UDPLITE	136     /* UDP-Lite (RFC 3828) */
+#define SOL_RAW		255
+#define SOL_IPX		256
+#define SOL_AX25	257
+#define SOL_ATALK	258
+#define SOL_NETROM	259
+#define SOL_ROSE	260
+#define SOL_DECNET	261
+#define	SOL_X25		262
+#define SOL_PACKET	263
+#define SOL_ATM		264	/* ATM layer (cell level) */
+#define SOL_AAL		265	/* ATM Adaption Layer (packet level) */
+#define SOL_IRDA        266
+#define SOL_NETBEUI	267
+#define SOL_LLC		268
+#define SOL_DCCP	269
+#define SOL_NETLINK	270
+#define SOL_TIPC	271
+#define SOL_RXRPC	272
+#define SOL_PPPOL2TP	273
+#define SOL_BLUETOOTH	274
+#define SOL_PNPIPE	275
+#define SOL_RDS		276
+#define SOL_IUCV	277
+#define SOL_CAIF	278
+#define SOL_ALG		279
+#define SOL_NFC		280
+#define SOL_KCM		281
+#define SOL_TLS		282
+#define SOL_XDP		283
+
+/* IPX options */
+#define IPX_TYPE	1
+
+extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr_storage *kaddr);
+extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data);
+
+struct timespec64;
+struct __kernel_timespec;
+struct old_timespec32;
+
+struct scm_timestamping_internal {
+	struct timespec64 ts[3];
+};
+
+extern void put_cmsg_scm_timestamping64(struct msghdr *msg, struct scm_timestamping_internal *tss);
+extern void put_cmsg_scm_timestamping(struct msghdr *msg, struct scm_timestamping_internal *tss);
+
+/* The __sys_...msg variants allow MSG_CMSG_COMPAT iff
+ * forbid_cmsg_compat==false
+ */
+extern long __sys_recvmsg(int fd, struct user_msghdr __user *msg,
+			  unsigned int flags, bool forbid_cmsg_compat);
+extern long __sys_sendmsg(int fd, struct user_msghdr __user *msg,
+			  unsigned int flags, bool forbid_cmsg_compat);
+extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg,
+			  unsigned int vlen, unsigned int flags,
+			  struct __kernel_timespec __user *timeout,
+			  struct old_timespec32 __user *timeout32);
+extern int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg,
+			  unsigned int vlen, unsigned int flags,
+			  bool forbid_cmsg_compat);
+extern long __sys_sendmsg_sock(struct socket *sock, struct msghdr *msg,
+			       unsigned int flags);
+extern long __sys_recvmsg_sock(struct socket *sock, struct msghdr *msg,
+			       struct user_msghdr __user *umsg,
+			       struct sockaddr __user *uaddr,
+			       unsigned int flags);
+extern int sendmsg_copy_msghdr(struct msghdr *msg,
+			       struct user_msghdr __user *umsg, unsigned flags,
+			       struct iovec **iov);
+extern int recvmsg_copy_msghdr(struct msghdr *msg,
+			       struct user_msghdr __user *umsg, unsigned flags,
+			       struct sockaddr __user **uaddr,
+			       struct iovec **iov);
+extern int __copy_msghdr_from_user(struct msghdr *kmsg,
+				   struct user_msghdr __user *umsg,
+				   struct sockaddr __user **save_addr,
+				   struct iovec __user **uiov, size_t *nsegs);
+
+/* helpers which do the actual work for syscalls */
+extern int __sys_recvfrom(int fd, void __user *ubuf, size_t size,
+			  unsigned int flags, struct sockaddr __user *addr,
+			  int __user *addr_len);
+extern int __sys_sendto(int fd, void __user *buff, size_t len,
+			unsigned int flags, struct sockaddr __user *addr,
+			int addr_len);
+extern int __sys_accept4_file(struct file *file, unsigned file_flags,
+			struct sockaddr __user *upeer_sockaddr,
+			 int __user *upeer_addrlen, int flags,
+			 unsigned long nofile);
+extern int __sys_accept4(int fd, struct sockaddr __user *upeer_sockaddr,
+			 int __user *upeer_addrlen, int flags);
+extern int __sys_socket(int family, int type, int protocol);
+extern int __sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen);
+extern int __sys_connect_file(struct file *file, struct sockaddr_storage *addr,
+			      int addrlen, int file_flags);
+extern int __sys_connect(int fd, struct sockaddr __user *uservaddr,
+			 int addrlen);
+extern int __sys_listen(int fd, int backlog);
+extern int __sys_getsockname(int fd, struct sockaddr __user *usockaddr,
+			     int __user *usockaddr_len);
+extern int __sys_getpeername(int fd, struct sockaddr __user *usockaddr,
+			     int __user *usockaddr_len);
+extern int __sys_socketpair(int family, int type, int protocol,
+			    int __user *usockvec);
+extern int __sys_shutdown(int fd, int how);
+
+extern struct ns_common *get_net_ns(struct ns_common *ns);
+#endif /* _LINUX_SOCKET_H */

tools/perf/trace/beauty/sockaddr.c

@@ -7,14 +7,7 @@
 #include <sys/un.h>
 #include <arpa/inet.h>
 
-static const char *socket_families[] = {
-	"UNSPEC", "LOCAL", "INET", "AX25", "IPX", "APPLETALK", "NETROM",
-	"BRIDGE", "ATMPVC", "X25", "INET6", "ROSE", "DECnet", "NETBEUI",
-	"SECURITY", "KEY", "NETLINK", "PACKET", "ASH", "ECONET", "ATMSVC",
-	"RDS", "SNA", "IRDA", "PPPOX", "WANPIPE", "LLC", "IB", "CAN", "TIPC",
-	"BLUETOOTH", "IUCV", "RXRPC", "ISDN", "PHONET", "IEEE802154", "CAIF",
-	"ALG", "NFC", "VSOCK",
-};
+#include "trace/beauty/generated/socket_arrays.c"
 DEFINE_STRARRAY(socket_families, "PF_");
 
 static size_t af_inet__scnprintf(struct sockaddr *sa, char *bf, size_t size)

tools/perf/trace/beauty/socket.sh

+#!/bin/sh
+# SPDX-License-Identifier: LGPL-2.1
+
+# This one uses a copy from the kernel sources headers that is in a
+# place used just for these tools/perf/beauty/ usage, we shouldn't not
+# put it in tools/include/linux otherwise they would be used in the
+# normal compiler building process and would drag needless stuff from the
+# kernel.
+
+# When what these scripts need is already in tools/include/ then use it,
+# otherwise grab and check the copy from the kernel sources just for these
+# string table building scripts.
+
+[ $# -eq 1 ] && header_dir=$1 || header_dir=tools/perf/trace/beauty/include/linux/
+
+printf "static const char *socket_families[] = {\n"
+# #define AF_LOCAL	1	/* POSIX name for AF_UNIX	*/
+regex='^#define[[:space:]]+AF_(\w+)[[:space:]]+([[:digit:]]+).*'
+
+egrep $regex ${header_dir}/socket.h | \
+	sed -r "s/$regex/\2 \1/g"	| \
+	xargs printf "\t[%s] = \"%s\",\n" | \
+	egrep -v "\"(UNIX|MAX)\""
+printf "};\n"

tools/perf/util/Build

@@ -117,6 +117,7 @@ endif
 perf-y += parse-branch-options.o
 perf-y += dump-insn.o
 perf-y += parse-regs-options.o
+perf-y += parse-sublevel-options.o
 perf-y += term.o
 perf-y += help-unknown-cmd.o
 perf-y += mem-events.o

tools/perf/util/build-id.c

@@ -31,6 +31,10 @@
 #include "probe-file.h"
 #include "strlist.h"
 
+#ifdef HAVE_DEBUGINFOD_SUPPORT
+#include <elfutils/debuginfod.h>
+#endif
+
 #include <linux/ctype.h>
 #include <linux/zalloc.h>
 
@@ -636,6 +640,21 @@ static char *build_id_cache__find_debug(const char *sbuild_id,
 	if (realname && access(realname, R_OK))
 		zfree(&realname);
 	nsinfo__mountns_exit(&nsc);
+
+#ifdef HAVE_DEBUGINFOD_SUPPORT
+        if (realname == NULL) {
+                debuginfod_client* c = debuginfod_begin();
+                if (c != NULL) {
+                        int fd = debuginfod_find_debuginfo(c,
+                                                           (const unsigned char*)sbuild_id, 0,
+                                                           &realname);
+                        if (fd >= 0)
+                                close(fd); /* retaining reference by realname */
+                        debuginfod_end(c);
+                }
+        }
+#endif
+
 out:
 	free(debugfile);
 	return realname;

tools/perf/util/debug.c

@@ -20,6 +20,7 @@
 #include "target.h"
 #include "ui/helpline.h"
 #include "ui/ui.h"
+#include "util/parse-sublevel-options.h"
 
 #include <linux/ctype.h>
 
@@ -173,65 +174,37 @@ void trace_event(union perf_event *event)
 		     trace_event_printer, event);
 }
 
-static struct debug_variable {
-	const char *name;
-	int *ptr;
-} debug_variables[] = {
-	{ .name = "verbose",		.ptr = &verbose },
-	{ .name = "ordered-events",	.ptr = &debug_ordered_events},
-	{ .name = "stderr",		.ptr = &redirect_to_stderr},
-	{ .name = "data-convert",	.ptr = &debug_data_convert },
-	{ .name = "perf-event-open",	.ptr = &debug_peo_args },
+static struct sublevel_option debug_opts[] = {
+	{ .name = "verbose",		.value_ptr = &verbose },
+	{ .name = "ordered-events",	.value_ptr = &debug_ordered_events},
+	{ .name = "stderr",		.value_ptr = &redirect_to_stderr},
+	{ .name = "data-convert",	.value_ptr = &debug_data_convert },
+	{ .name = "perf-event-open",	.value_ptr = &debug_peo_args },
 	{ .name = NULL, }
 };
 
 int perf_debug_option(const char *str)
 {
-	struct debug_variable *var = &debug_variables[0];
-	char *vstr, *s = strdup(str);
-	int v = 1;
-
-	vstr = strchr(s, '=');
-	if (vstr)
-		*vstr++ = 0;
-
-	while (var->name) {
-		if (!strcmp(s, var->name))
-			break;
-		var++;
-	}
-
-	if (!var->name) {
-		pr_err("Unknown debug variable name '%s'\n", s);
-		free(s);
-		return -1;
-	}
+	int ret;
 
-	if (vstr) {
-		v = atoi(vstr);
-		/*
-		 * Allow only values in range (0, 10),
-		 * otherwise set 0.
-		 */
-		v = (v < 0) || (v > 10) ? 0 : v;
-	}
+	ret = perf_parse_sublevel_options(str, debug_opts);
+	if (ret)
+		return ret;
 
-	if (quiet)
-		v = -1;
+	/* Allow only verbose value in range (0, 10), otherwise set 0. */
+	verbose = (verbose < 0) || (verbose > 10) ? 0 : verbose;
 
-	*var->ptr = v;
-	free(s);
 	return 0;
 }
 
 int perf_quiet_option(void)
 {
-	struct debug_variable *var = &debug_variables[0];
+	struct sublevel_option *opt = &debug_opts[0];
 
 	/* disable all debug messages */
-	while (var->name) {
-		*var->ptr = -1;
-		var++;
+	while (opt->name) {
+		*opt->value_ptr = -1;
+		opt++;
 	}
 
 	return 0;

tools/perf/util/dso.c

@@ -1265,7 +1265,7 @@ struct dso *dso__new_id(const char *name, struct dso_id *id)
 		dso->has_build_id = 0;
 		dso->has_srcline = 1;
 		dso->a2l_fails = 1;
-		dso->kernel = DSO_TYPE_USER;
+		dso->kernel = DSO_SPACE__USER;
 		dso->needs_swap = DSO_SWAP__UNSET;
 		dso->comp = COMP_ID__NONE;
 		RB_CLEAR_NODE(&dso->rb_node);

tools/perf/util/dso.h

@@ -46,10 +46,10 @@ enum dso_binary_type {
 	DSO_BINARY_TYPE__NOT_FOUND,
 };
 
-enum dso_kernel_type {
-	DSO_TYPE_USER = 0,
-	DSO_TYPE_KERNEL,
-	DSO_TYPE_GUEST_KERNEL
+enum dso_space_type {
+	DSO_SPACE__USER = 0,
+	DSO_SPACE__KERNEL,
+	DSO_SPACE__KERNEL_GUEST
 };
 
 enum dso_swap_type {
@@ -160,7 +160,7 @@ struct dso {
 	void		 *a2l;
 	char		 *symsrc_filename;
 	unsigned int	 a2l_fails;
-	enum dso_kernel_type	kernel;
+	enum dso_space_type	kernel;
 	enum dso_swap_type	needs_swap;
 	enum dso_binary_type	symtab_type;
 	enum dso_binary_type	binary_type;

tools/perf/util/header.c

@@ -2056,7 +2056,7 @@ static int __event_process_build_id(struct perf_record_header_build_id *bev,
 	struct machine *machine;
 	u16 cpumode;
 	struct dso *dso;
-	enum dso_kernel_type dso_type;
+	enum dso_space_type dso_space;
 
 	machine = perf_session__findnew_machine(session, bev->pid);
 	if (!machine)
@@ -2066,14 +2066,14 @@ static int __event_process_build_id(struct perf_record_header_build_id *bev,
 
 	switch (cpumode) {
 	case PERF_RECORD_MISC_KERNEL:
-		dso_type = DSO_TYPE_KERNEL;
+		dso_space = DSO_SPACE__KERNEL;
 		break;
 	case PERF_RECORD_MISC_GUEST_KERNEL:
-		dso_type = DSO_TYPE_GUEST_KERNEL;
+		dso_space = DSO_SPACE__KERNEL_GUEST;
 		break;
 	case PERF_RECORD_MISC_USER:
 	case PERF_RECORD_MISC_GUEST_USER:
-		dso_type = DSO_TYPE_USER;
+		dso_space = DSO_SPACE__USER;
 		break;
 	default:
 		goto out;
@@ -2085,14 +2085,13 @@ static int __event_process_build_id(struct perf_record_header_build_id *bev,
 
 		dso__set_build_id(dso, &bev->build_id);
 
-		if (dso_type != DSO_TYPE_USER) {
+		if (dso_space != DSO_SPACE__USER) {
 			struct kmod_path m = { .name = NULL, };
 
 			if (!kmod_path__parse_name(&m, filename) && m.kmod)
 				dso__set_module_info(dso, &m, machine);
-			else
-				dso->kernel = dso_type;
 
+			dso->kernel = dso_space;
 			free(m.name);
 		}
 

tools/perf/util/machine.c

@@ -703,7 +703,7 @@ static struct dso *machine__findnew_module_dso(struct machine *machine,
 
 		dso__set_module_info(dso, m, machine);
 		dso__set_long_name(dso, strdup(filename), true);
-		dso->kernel = DSO_TYPE_KERNEL;
+		dso->kernel = DSO_SPACE__KERNEL;
 	}
 
 	dso__get(dso);
@@ -753,7 +753,7 @@ static int machine__process_ksymbol_register(struct machine *machine,
 		struct dso *dso = dso__new(event->ksymbol.name);
 
 		if (dso) {
-			dso->kernel = DSO_TYPE_KERNEL;
+			dso->kernel = DSO_SPACE__KERNEL;
 			map = map__new2(0, dso);
 		}
 
@@ -971,14 +971,14 @@ static struct dso *machine__get_kernel(struct machine *machine)
 			vmlinux_name = symbol_conf.vmlinux_name;
 
 		kernel = machine__findnew_kernel(machine, vmlinux_name,
-						 "[kernel]", DSO_TYPE_KERNEL);
+						 "[kernel]", DSO_SPACE__KERNEL);
 	} else {
 		if (symbol_conf.default_guest_vmlinux_name)
 			vmlinux_name = symbol_conf.default_guest_vmlinux_name;
 
 		kernel = machine__findnew_kernel(machine, vmlinux_name,
 						 "[guest.kernel]",
-						 DSO_TYPE_GUEST_KERNEL);
+						 DSO_SPACE__KERNEL_GUEST);
 	}
 
 	if (kernel != NULL && (!kernel->has_build_id))
@@ -1606,7 +1606,7 @@ static int machine__process_kernel_mmap_event(struct machine *machine,
 					      union perf_event *event)
 {
 	struct map *map;
-	enum dso_kernel_type kernel_type;
+	enum dso_space_type dso_space;
 	bool is_kernel_mmap;
 
 	/* If we have maps from kcore then we do not need or want any others */
@@ -1614,9 +1614,9 @@ static int machine__process_kernel_mmap_event(struct machine *machine,
 		return 0;
 
 	if (machine__is_host(machine))
-		kernel_type = DSO_TYPE_KERNEL;
+		dso_space = DSO_SPACE__KERNEL;
 	else
-		kernel_type = DSO_TYPE_GUEST_KERNEL;
+		dso_space = DSO_SPACE__KERNEL_GUEST;
 
 	is_kernel_mmap = memcmp(event->mmap.filename,
 				machine->mmap_name,
@@ -1676,7 +1676,7 @@ static int machine__process_kernel_mmap_event(struct machine *machine,
 		if (kernel == NULL)
 			goto out_problem;
 
-		kernel->kernel = kernel_type;
+		kernel->kernel = dso_space;
 		if (__machine__create_kernel_maps(machine, kernel) < 0) {
 			dso__put(kernel);
 			goto out_problem;

tools/perf/util/map.c

@@ -486,7 +486,7 @@ u64 map__rip_2objdump(struct map *map, u64 rip)
 	 * kernel modules also have DSO_TYPE_USER in dso->kernel,
 	 * but all kernel modules are ET_REL, so won't get here.
 	 */
-	if (map->dso->kernel == DSO_TYPE_USER)
+	if (map->dso->kernel == DSO_SPACE__USER)
 		return rip + map->dso->text_offset;
 
 	return map->unmap_ip(map, rip) - map->reloc;
@@ -516,7 +516,7 @@ u64 map__objdump_2mem(struct map *map, u64 ip)
 	 * kernel modules also have DSO_TYPE_USER in dso->kernel,
 	 * but all kernel modules are ET_REL, so won't get here.
 	 */
-	if (map->dso->kernel == DSO_TYPE_USER)
+	if (map->dso->kernel == DSO_SPACE__USER)
 		return map->unmap_ip(map, ip - map->dso->text_offset);
 
 	return ip + map->reloc;

tools/perf/util/parse-sublevel-options.c

+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "util/debug.h"
+#include "util/parse-sublevel-options.h"
+
+static int parse_one_sublevel_option(const char *str,
+				     struct sublevel_option *opts)
+{
+	struct sublevel_option *opt = opts;
+	char *vstr, *s = strdup(str);
+	int v = 1;
+
+	if (!s) {
+		pr_err("no memory\n");
+		return -1;
+	}
+
+	vstr = strchr(s, '=');
+	if (vstr)
+		*vstr++ = 0;
+
+	while (opt->name) {
+		if (!strcmp(s, opt->name))
+			break;
+		opt++;
+	}
+
+	if (!opt->name) {
+		pr_err("Unknown option name '%s'\n", s);
+		free(s);
+		return -1;
+	}
+
+	if (vstr)
+		v = atoi(vstr);
+
+	*opt->value_ptr = v;
+	free(s);
+	return 0;
+}
+
+/* parse options like --foo a=<n>,b,c... */
+int perf_parse_sublevel_options(const char *str, struct sublevel_option *opts)
+{
+	char *s = strdup(str);
+	char *p = NULL;
+	int ret;
+
+	if (!s) {
+		pr_err("no memory\n");
+		return -1;
+	}
+
+	p = strtok(s, ",");
+	while (p) {
+		ret = parse_one_sublevel_option(p, opts);
+		if (ret) {
+			free(s);
+			return ret;
+		}
+
+		p = strtok(NULL, ",");
+	}
+
+	free(s);
+	return 0;
+}

tools/perf/util/parse-sublevel-options.h

+#ifndef _PERF_PARSE_SUBLEVEL_OPTIONS_H
+#define _PERF_PARSE_SUBLEVEL_OPTIONS_H
+
+struct sublevel_option {
+	const char *name;
+	int *value_ptr;
+};
+
+int perf_parse_sublevel_options(const char *str, struct sublevel_option *opts);
+
+#endif
\ No newline at end of file

tools/perf/util/symbol-elf.c

@@ -789,7 +789,7 @@ int symsrc__init(struct symsrc *ss, struct dso *dso, const char *name,
 	if (ss->opdshdr.sh_type != SHT_PROGBITS)
 		ss->opdsec = NULL;
 
-	if (dso->kernel == DSO_TYPE_USER)
+	if (dso->kernel == DSO_SPACE__USER)
 		ss->adjust_symbols = true;
 	else
 		ss->adjust_symbols = elf__needs_adjust_symbols(ehdr);
@@ -872,7 +872,7 @@ static int dso__process_kernel_symbol(struct dso *dso, struct map *map,
 		 * kallsyms and identity maps.  Overwrite it to
 		 * map to the kernel dso.
 		 */
-		if (*remap_kernel && dso->kernel) {
+		if (*remap_kernel && dso->kernel && !kmodule) {
 			*remap_kernel = false;
 			map->start = shdr->sh_addr + ref_reloc(kmap);
 			map->end = map->start + shdr->sh_size;
@@ -1068,7 +1068,7 @@ int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *syms_ss,
 	 * Initial kernel and module mappings do not map to the dso.
 	 * Flag the fixups.
 	 */
-	if (dso->kernel || kmodule) {
+	if (dso->kernel) {
 		remap_kernel = true;
 		adjust_kernel_syms = dso->adjust_symbols;
 	}
@@ -1130,7 +1130,7 @@ int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *syms_ss,
 		    (sym.st_value & 1))
 			--sym.st_value;
 
-		if (dso->kernel || kmodule) {
+		if (dso->kernel) {
 			if (dso__process_kernel_symbol(dso, map, &sym, &shdr, kmaps, kmap, &curr_dso, &curr_map,
 						       section_name, adjust_kernel_syms, kmodule, &remap_kernel))
 				goto out_elf_end;

tools/perf/util/symbol.c

@@ -808,7 +808,7 @@ static int maps__split_kallsyms(struct maps *kmaps, struct dso *dso, u64 delta,
 
 			if (strcmp(curr_map->dso->short_name, module)) {
 				if (curr_map != initial_map &&
-				    dso->kernel == DSO_TYPE_GUEST_KERNEL &&
+				    dso->kernel == DSO_SPACE__KERNEL_GUEST &&
 				    machine__is_default_guest(machine)) {
 					/*
 					 * We assume all symbols of a module are
@@ -865,7 +865,7 @@ static int maps__split_kallsyms(struct maps *kmaps, struct dso *dso, u64 delta,
 				goto add_symbol;
 			}
 
-			if (dso->kernel == DSO_TYPE_GUEST_KERNEL)
+			if (dso->kernel == DSO_SPACE__KERNEL_GUEST)
 				snprintf(dso_name, sizeof(dso_name),
 					"[guest.kernel].%d",
 					kernel_range++);
@@ -909,7 +909,7 @@ static int maps__split_kallsyms(struct maps *kmaps, struct dso *dso, u64 delta,
 	}
 
 	if (curr_map != initial_map &&
-	    dso->kernel == DSO_TYPE_GUEST_KERNEL &&
+	    dso->kernel == DSO_SPACE__KERNEL_GUEST &&
 	    machine__is_default_guest(kmaps->machine)) {
 		dso__set_loaded(curr_map->dso);
 	}
@@ -1387,7 +1387,7 @@ static int dso__load_kcore(struct dso *dso, struct map *map,
 	 * Set the data type and long name so that kcore can be read via
 	 * dso__data_read_addr().
 	 */
-	if (dso->kernel == DSO_TYPE_GUEST_KERNEL)
+	if (dso->kernel == DSO_SPACE__KERNEL_GUEST)
 		dso->binary_type = DSO_BINARY_TYPE__GUEST_KCORE;
 	else
 		dso->binary_type = DSO_BINARY_TYPE__KCORE;
@@ -1451,7 +1451,7 @@ int __dso__load_kallsyms(struct dso *dso, const char *filename,
 	symbols__fixup_end(&dso->symbols);
 	symbols__fixup_duplicate(&dso->symbols);
 
-	if (dso->kernel == DSO_TYPE_GUEST_KERNEL)
+	if (dso->kernel == DSO_SPACE__KERNEL_GUEST)
 		dso->symtab_type = DSO_BINARY_TYPE__GUEST_KALLSYMS;
 	else
 		dso->symtab_type = DSO_BINARY_TYPE__KALLSYMS;
@@ -1537,17 +1537,17 @@ static bool dso__is_compatible_symtab_type(struct dso *dso, bool kmod,
 	case DSO_BINARY_TYPE__MIXEDUP_UBUNTU_DEBUGINFO:
 	case DSO_BINARY_TYPE__BUILDID_DEBUGINFO:
 	case DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO:
-		return !kmod && dso->kernel == DSO_TYPE_USER;
+		return !kmod && dso->kernel == DSO_SPACE__USER;
 
 	case DSO_BINARY_TYPE__KALLSYMS:
 	case DSO_BINARY_TYPE__VMLINUX:
 	case DSO_BINARY_TYPE__KCORE:
-		return dso->kernel == DSO_TYPE_KERNEL;
+		return dso->kernel == DSO_SPACE__KERNEL;
 
 	case DSO_BINARY_TYPE__GUEST_KALLSYMS:
 	case DSO_BINARY_TYPE__GUEST_VMLINUX:
 	case DSO_BINARY_TYPE__GUEST_KCORE:
-		return dso->kernel == DSO_TYPE_GUEST_KERNEL;
+		return dso->kernel == DSO_SPACE__KERNEL_GUEST;
 
 	case DSO_BINARY_TYPE__GUEST_KMODULE:
 	case DSO_BINARY_TYPE__GUEST_KMODULE_COMP:
@@ -1650,9 +1650,9 @@ int dso__load(struct dso *dso, struct map *map)
 		dso->symtab_type == DSO_BINARY_TYPE__GUEST_KMODULE_COMP;
 
 	if (dso->kernel && !kmod) {
-		if (dso->kernel == DSO_TYPE_KERNEL)
+		if (dso->kernel == DSO_SPACE__KERNEL)
 			ret = dso__load_kernel_sym(dso, map);
-		else if (dso->kernel == DSO_TYPE_GUEST_KERNEL)
+		else if (dso->kernel == DSO_SPACE__KERNEL_GUEST)
 			ret = dso__load_guest_kernel_sym(dso, map);
 
 		machine = map__kmaps(map)->machine;
@@ -1882,7 +1882,7 @@ int dso__load_vmlinux(struct dso *dso, struct map *map,
 	else
 		symbol__join_symfs(symfs_vmlinux, vmlinux);
 
-	if (dso->kernel == DSO_TYPE_GUEST_KERNEL)
+	if (dso->kernel == DSO_SPACE__KERNEL_GUEST)
 		symtab_type = DSO_BINARY_TYPE__GUEST_VMLINUX;
 	else
 		symtab_type = DSO_BINARY_TYPE__VMLINUX;
@@ -1894,7 +1894,7 @@ int dso__load_vmlinux(struct dso *dso, struct map *map,
 	symsrc__destroy(&ss);
 
 	if (err > 0) {
-		if (dso->kernel == DSO_TYPE_GUEST_KERNEL)
+		if (dso->kernel == DSO_SPACE__KERNEL_GUEST)
 			dso->binary_type = DSO_BINARY_TYPE__GUEST_VMLINUX;
 		else
 			dso->binary_type = DSO_BINARY_TYPE__VMLINUX;