Merge tag 'perf-tools-for-v5.14-2021-07-01' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf tool updates from Arnaldo Carvalho de Melo:
 "Tools:

   - Add cgroup support for 'perf top' (-G).

   - Add support for KVM MSRs in 'perf kvm stat'

   - Support probes on init functions in 'perf probe', to support the
     bootconfig format.

   - Improve error reporting in 'perf probe'.

   - No need to synthesize BUILD_ID records in 'perf inject' if the
     MMAP2 records have build ids already.

   - Allow toggling source code ('s' hotkey) in 'perf annotate' in all
     lines.

   - Add itrace options support to 'perf annotate'.

   - Support to custom DSO filters for 'perf script'.

  Hardware enablement:

   - Support the HYBRID_TOPOLOGY and HYBRID_CPU_PMU_CAPS features in the
     perf.data file header.

   - Support PMU prefix for mem-load and mem-store events, to support
     hybrid (BIG little) CPUs such as Intel's Alderlake.

   - Support hybrid CPUs in 'perf mem' and 'perf c2c'.

  Hardware tracing:

   - Intel PT now supports tracing KVM guests.

   - Timestamp improvements for ARM's Coresight.

  Build:

   - Add 'make -C tools/perf build-test' entries for
     libopencsd/CORESIGHT=1 and libbpf/LIBBPF_DYNAMIC=1.

   - Use bison's --file-prefix-map option to avoid storing full paths
     when using O= in the perf build.

  Tests:

   - Improve the 'perf test' entries for libpfm4 and BPF counters.

  Misc:

   - Sync msr-index.h, mount.h, kvm headers with the kernel originals.

   - Add vendor events and metrics for Intel's Icelake Server & Client"

* tag 'perf-tools-for-v5.14-2021-07-01' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (123 commits)
  perf session: Add missing evlist__delete when deleting a session
  perf annotate: Allow 's' on source code lines
  perf dlfilter: Add object_code() to perf_dlfilter_fns
  perf dlfilter: Add attr() to perf_dlfilter_fns
  perf dlfilter: Add srcline() to perf_dlfilter_fns
  perf dlfilter: Add insn() to perf_dlfilter_fns
  perf dlfilter: Add resolve_address() to perf_dlfilter_fns
  perf build: Install perf_dlfilter.h
  perf script: Add option to pass arguments to dlfilters
  perf script: Add option to list dlfilters
  perf script: Add dlfilter__filter_event_early()
  perf script: Add API for filtering via dynamically loaded shared object
  perf llvm: Return -ENOMEM when asprintf() fails
  perf cs-etm: Delay decode of non-timeless data until cs_etm__flush_events()
  tools headers UAPI: Synch KVM's svm.h header with the kernel
  tools kvm headers arm64: Update KVM headers from the kernel sources
  tools headers UAPI: Sync linux/kvm.h with the kernel sources
  tools headers cpufeatures: Sync with the kernel sources
  tools include UAPI: Update linux/mount.h copy
  tools arch x86: Sync the msr-index.h copy with the kernel sources
  ...

1 files changed, 107 insertions, 0 deletions

diff --git a/tools/perf/scripts/python/libxed.py b/tools/perf/scripts/python/libxed.py
new file mode 100644
index 000000000000..2c70a5a7eb9c
--- /dev/null
+++ b/tools/perf/scripts/python/libxed.py
@@ -0,0 +1,107 @@
+#!/usr/bin/env python
+# SPDX-License-Identifier: GPL-2.0
+# libxed.py: Python wrapper for libxed.so
+# Copyright (c) 2014-2021, Intel Corporation.
+
+# To use Intel XED, libxed.so must be present. To build and install
+# libxed.so:
+#            git clone https://github.com/intelxed/mbuild.git mbuild
+#            git clone https://github.com/intelxed/xed
+#            cd xed
+#            ./mfile.py --share
+#            sudo ./mfile.py --prefix=/usr/local install
+#            sudo ldconfig
+#
+
+import sys
+
+from ctypes import CDLL, Structure, create_string_buffer, addressof, sizeof, \
+		   c_void_p, c_bool, c_byte, c_char, c_int, c_uint, c_longlong, c_ulonglong
+
+# XED Disassembler
+
+class xed_state_t(Structure):
+
+	_fields_ = [
+		("mode", c_int),
+		("width", c_int)
+	]
+
+class XEDInstruction():
+
+	def __init__(self, libxed):
+		# Current xed_decoded_inst_t structure is 192 bytes. Use 512 to allow for future expansion
+		xedd_t = c_byte * 512
+		self.xedd = xedd_t()
+		self.xedp = addressof(self.xedd)
+		libxed.xed_decoded_inst_zero(self.xedp)
+		self.state = xed_state_t()
+		self.statep = addressof(self.state)
+		# Buffer for disassembled instruction text
+		self.buffer = create_string_buffer(256)
+		self.bufferp = addressof(self.buffer)
+
+class LibXED():
+
+	def __init__(self):
+		try:
+			self.libxed = CDLL("libxed.so")
+		except:
+			self.libxed = None
+		if not self.libxed:
+			self.libxed = CDLL("/usr/local/lib/libxed.so")
+
+		self.xed_tables_init = self.libxed.xed_tables_init
+		self.xed_tables_init.restype = None
+		self.xed_tables_init.argtypes = []
+
+		self.xed_decoded_inst_zero = self.libxed.xed_decoded_inst_zero
+		self.xed_decoded_inst_zero.restype = None
+		self.xed_decoded_inst_zero.argtypes = [ c_void_p ]
+
+		self.xed_operand_values_set_mode = self.libxed.xed_operand_values_set_mode
+		self.xed_operand_values_set_mode.restype = None
+		self.xed_operand_values_set_mode.argtypes = [ c_void_p, c_void_p ]
+
+		self.xed_decoded_inst_zero_keep_mode = self.libxed.xed_decoded_inst_zero_keep_mode
+		self.xed_decoded_inst_zero_keep_mode.restype = None
+		self.xed_decoded_inst_zero_keep_mode.argtypes = [ c_void_p ]
+
+		self.xed_decode = self.libxed.xed_decode
+		self.xed_decode.restype = c_int
+		self.xed_decode.argtypes = [ c_void_p, c_void_p, c_uint ]
+
+		self.xed_format_context = self.libxed.xed_format_context
+		self.xed_format_context.restype = c_uint
+		self.xed_format_context.argtypes = [ c_int, c_void_p, c_void_p, c_int, c_ulonglong, c_void_p, c_void_p ]
+
+		self.xed_tables_init()
+
+	def Instruction(self):
+		return XEDInstruction(self)
+
+	def SetMode(self, inst, mode):
+		if mode:
+			inst.state.mode = 4 # 32-bit
+			inst.state.width = 4 # 4 bytes
+		else:
+			inst.state.mode = 1 # 64-bit
+			inst.state.width = 8 # 8 bytes
+		self.xed_operand_values_set_mode(inst.xedp, inst.statep)
+
+	def DisassembleOne(self, inst, bytes_ptr, bytes_cnt, ip):
+		self.xed_decoded_inst_zero_keep_mode(inst.xedp)
+		err = self.xed_decode(inst.xedp, bytes_ptr, bytes_cnt)
+		if err:
+			return 0, ""
+		# Use AT&T mode (2), alternative is Intel (3)
+		ok = self.xed_format_context(2, inst.xedp, inst.bufferp, sizeof(inst.buffer), ip, 0, 0)
+		if not ok:
+			return 0, ""
+		if sys.version_info[0] == 2:
+			result = inst.buffer.value
+		else:
+			result = inst.buffer.value.decode()
+		# Return instruction length and the disassembled instruction text
+		# For now, assume the length is in byte 166
+		return inst.xedd[166], result