Commit 95f9bfcf authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo
Browse files

perf scripts python: intel-pt-events.py: Add Event Trace 



Add Event Trace to the intel-pt-events.py script. This shows how to unpack
the raw data from the new sample events in a Python script.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: https://lore.kernel.org/r/20220124084201.2699795-22-adrian.hunter@intel.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 26738598

tools/perf/scripts/python/intel-pt-events.py

+50 −5
Original line number Diff line number Diff line
@@ -76,16 +76,16 @@ def trace_begin(): 
	glb_args = ap.parse_args()

	if glb_args.insn_trace:

		print("Intel PT Instruction Trace")

		itrace = "i0nsepwx"

		itrace = "i0nsepwxI"

		glb_insn = True

	elif glb_args.src_trace:

		print("Intel PT Source Trace")

		itrace = "i0nsepwx"

		itrace = "i0nsepwxI"

		glb_insn = True

		glb_src = True

	else:

		print("Intel PT Branch Trace, Power Events and PTWRITE")

		itrace = "bepwx"

		print("Intel PT Branch Trace, Power Events, Event Trace and PTWRITE")

		itrace = "bepwxI"

	global glb_disassembler

	try:

		glb_disassembler = LibXED()
@@ -149,6 +149,43 @@ def print_psb(raw_buf): 
	offset = data[1]

	print("offset: %#x" % (offset), end=' ')



glb_cfe = ["", "INTR", "IRET", "SMI", "RSM", "SIPI", "INIT", "VMENTRY", "VMEXIT",

		"VMEXIT_INTR", "SHUTDOWN", "", "UINT", "UIRET"] + [""] * 18

glb_evd = ["", "PFA", "VMXQ", "VMXR"] + [""] * 60



def print_evt(raw_buf):

	data = struct.unpack_from("<BBH", raw_buf)

	typ = data[0] & 0x1f

	ip_flag = (data[0] & 0x80) >> 7

	vector = data[1]

	evd_cnt = data[2]

	s = glb_cfe[typ]

	if s:

		print(" cfe: %s IP: %u vector: %u" % (s, ip_flag, vector), end=' ')

	else:

		print(" cfe: %u IP: %u vector: %u" % (typ, ip_flag, vector), end=' ')

	pos = 4

	for i in range(evd_cnt):

		data = struct.unpack_from("<QQ", raw_buf)

		et = data[0] & 0x3f

		s = glb_evd[et]

		if s:

			print("%s: %#x" % (s, data[1]), end=' ')

		else:

			print("EVD_%u: %#x" % (et, data[1]), end=' ')



def print_iflag(raw_buf):

	data = struct.unpack_from("<IQ", raw_buf)

	iflag = data[0] & 1

	old_iflag = iflag ^ 1

	via_branch = data[0] & 2

	branch_ip = data[1]

	if via_branch:

		s = "via"

	else:

		s = "non"

	print("IFLAG: %u->%u %s branch" % (old_iflag, iflag, s), end=' ')



def common_start_str(comm, sample):

	ts = sample["time"]

	cpu = sample["cpu"]
@@ -164,7 +201,7 @@ def print_common_start(comm, sample, name): 
	# weight      = sample["weight"]

	# transaction = sample["transaction"]

	# cpumode     = get_optional_zero(sample, "cpumode")

	print(common_start_str(comm, sample) + "%7s  %19s" % (name, flags_disp), end=' ')

	print(common_start_str(comm, sample) + "%8s  %21s" % (name, flags_disp), end=' ')



def print_instructions_start(comm, sample):

	if "x" in get_optional_null(sample, "flags"):
@@ -315,6 +352,14 @@ def do_process_event(param_dict): 
		print_common_start(comm, sample, name)

		print_psb(raw_buf)

		print_common_ip(param_dict, sample, symbol, dso)

	elif name == "evt":

		print_common_start(comm, sample, name)

		print_evt(raw_buf)

		print_common_ip(param_dict, sample, symbol, dso)

	elif name == "iflag":

		print_common_start(comm, sample, name)

		print_iflag(raw_buf)

		print_common_ip(param_dict, sample, symbol, dso)

	else:

		print_common_start(comm, sample, name)

		print_common_ip(param_dict, sample, symbol, dso)