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Commit 90e457f7 authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo
Browse files

perf tools: Add Intel PT support 



Add support for Intel Processor Trace.

Intel PT support fits within the new auxtrace infrastructure.  Recording
is supporting by identifying the Intel PT PMU, parsing options and
setting up events.

Decoding is supported by queuing up trace data by cpu or thread and then
decoding synchronously delivering synthesized event samples into the
session processing for tools to consume.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent f4aa0819

tools/perf/arch/x86/util/Build

+2 −0
Original line number Diff line number Diff line
@@ -6,3 +6,5 @@ libperf-$(CONFIG_DWARF) += dwarf-regs.o 


libperf-$(CONFIG_LIBUNWIND)          += unwind-libunwind.o

libperf-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o



libperf-$(CONFIG_AUXTRACE) += intel-pt.o

tools/perf/arch/x86/util/intel-pt.c

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+752 −0

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tools/perf/util/Build

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@@ -79,6 +79,7 @@ libperf-y += cloexec.o 
libperf-y += thread-stack.o

libperf-$(CONFIG_AUXTRACE) += auxtrace.o

libperf-$(CONFIG_AUXTRACE) += intel-pt-decoder/

libperf-$(CONFIG_AUXTRACE) += intel-pt.o

libperf-y += parse-branch-options.o



libperf-$(CONFIG_LIBELF) += symbol-elf.o

tools/perf/util/intel-pt.c

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+1911 −0

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tools/perf/util/intel-pt.h

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Original line number Diff line number Diff line 
/*

 * intel_pt.h: Intel Processor Trace support

 * Copyright (c) 2013-2015, Intel Corporation.

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms and conditions of the GNU General Public License,

 * version 2, as published by the Free Software Foundation.

 *

 * This program is distributed in the hope it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for

 * more details.

 *

 */



#ifndef INCLUDE__PERF_INTEL_PT_H__

#define INCLUDE__PERF_INTEL_PT_H__



#define INTEL_PT_PMU_NAME "intel_pt"



enum {

	INTEL_PT_PMU_TYPE,

	INTEL_PT_TIME_SHIFT,

	INTEL_PT_TIME_MULT,

	INTEL_PT_TIME_ZERO,

	INTEL_PT_CAP_USER_TIME_ZERO,

	INTEL_PT_TSC_BIT,

	INTEL_PT_NORETCOMP_BIT,

	INTEL_PT_HAVE_SCHED_SWITCH,

	INTEL_PT_SNAPSHOT_MODE,

	INTEL_PT_PER_CPU_MMAPS,

	INTEL_PT_AUXTRACE_PRIV_MAX,

};



#define INTEL_PT_AUXTRACE_PRIV_SIZE (INTEL_PT_AUXTRACE_PRIV_MAX * sizeof(u64))



struct auxtrace_record;

struct perf_tool;

union perf_event;

struct perf_session;

struct perf_event_attr;

struct perf_pmu;



struct auxtrace_record *intel_pt_recording_init(int *err);



int intel_pt_process_auxtrace_info(union perf_event *event,

				   struct perf_session *session);



struct perf_event_attr *intel_pt_pmu_default_config(struct perf_pmu *pmu);



#endif