heads up: moving intel-pt-decoder/Build header checks to check_headers.sh

Hi Adrian,

We've made tools/perf/check-headers.sh the mechanism to check
for drift on kernel file copies we have in tools/, and it assumes that if we have tools/a/b/c/d, then it came from a/b/c/d in the kernel sources, e.g. a copy of the kernel's arch/x86/lib/x86-opcode-map.txt would be in tools/arch/x86/lib/x86-opcode-map.txt.

That is not the case with the intel-pt-decoder, so I'm thinking
about moving those files to comply with the model used for other copies, as having it in util/intel-pt-decoder/ isn't strictly required, i.e. those files could conceivably be used for other purposes besides decoding intel-pt traces, say for disassembly/annotate, that albeit not planned (at least by me) for the near future, would be something interesting to investigate doing.

IIRC Ingo was the one to point me out this, and now I saw the
warning about it being different flying by in the middle of the build, differently from what is done by check-headers.sh, that is to show everything that drifted in one single block, at the start of the build.

So unless you have a strong objection to this, I'll continue
investigation about how do do it with tools/perf/check-headers.sh,

Thanks,

- Arnaldo

P.S: See how the check-headers.sh stand out at the start and how the intel-pt-decoder copies get buried in the middle:

[acme@seventh perf]$ rm -rf /tmp/build/perf/ ; mkdir -p /tmp/build/perf ; make -C tools/perf O=/tmp/build/perf install-bin
make: Entering directory '/home/acme/git/perf/tools/perf'

  BUILD:   Doing 'make -j4' parallel build
  HOSTCC   /tmp/build/perf/fixdep.o
  HOSTLD   /tmp/build/perf/fixdep-in.o
  LINK     /tmp/build/perf/fixdep

Warning: Kernel ABI header at 'tools/include/uapi/linux/prctl.h' differs from latest version at 'include/uapi/linux/prctl.h'
Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h'

Auto-detecting system features:

...                         dwarf: [ on  ]
...            dwarf_getlocations: [ on  ]
...                         glibc: [ on  ]
...                          gtk2: [ on  ]
...                      libaudit: [ on  ]
...                        libbfd: [ on  ]
...                        libelf: [ on  ]
...                       libnuma: [ on  ]
...        numa_num_possible_cpus: [ on  ]
...                       libperl: [ on  ]
...                     libpython: [ on  ]
...                      libslang: [ on  ]
...                     libcrypto: [ on  ]
...                     libunwind: [ on  ]
...            libdw-dwarf-unwind: [ on  ]
...                          zlib: [ on  ]
...                          lzma: [ on  ]
...                     get_cpuid: [ on  ]
...                           bpf: [ on  ]

  GEN      /tmp/build/perf/common-cmds.h
  MKDIR    /tmp/build/perf/fd/
  CC       /tmp/build/perf/fd/array.o
  LD       /tmp/build/perf/fd/libapi-in.o
  MKDIR    /tmp/build/perf/fs/
  CC       /tmp/build/perf/fs/fs.o
  MKDIR    /tmp/build/perf/fs/
  CC       /tmp/build/perf/event-parse.o
  CC       /tmp/build/perf/fs/tracing_path.o
  PERF_VERSION = 4.17.rc6.ge91755
  LD       /tmp/build/perf/fs/libapi-in.o
  CC       /tmp/build/perf/event-plugin.o
  CC       /tmp/build/perf/cpu.o
  CC       /tmp/build/perf/debug.o
  CC       /tmp/build/perf/trace-seq.o
  CC       /tmp/build/perf/exec-cmd.o
  CC       /tmp/build/perf/str_error_r.o
  CC       /tmp/build/perf/parse-filter.o
  CC       /tmp/build/perf/help.o
  LD       /tmp/build/perf/libapi-in.o
  CC       /tmp/build/perf/parse-utils.o
  AR       /tmp/build/perf/libapi.a
  CC       /tmp/build/perf/kbuffer-parse.o
  CC       /tmp/build/perf/pager.o
  LD       /tmp/build/perf/libtraceevent-in.o
  CC       /tmp/build/perf/parse-options.o
  LINK     /tmp/build/perf/libtraceevent.a
  MKDIR    /tmp/build/perf/pmu-events/
  HOSTCC   /tmp/build/perf/pmu-events/json.o
  CC       /tmp/build/perf/run-command.o
  MKDIR    /tmp/build/perf/pmu-events/
  HOSTCC   /tmp/build/perf/pmu-events/jsmn.o
  CC       /tmp/build/perf/sigchain.o
  CC       /tmp/build/perf/libbpf.o
  HOSTCC   /tmp/build/perf/pmu-events/jevents.o
  CC       /tmp/build/perf/subcmd-config.o
  CC       /tmp/build/perf/bpf.o
  LD       /tmp/build/perf/libsubcmd-in.o
  CC       /tmp/build/perf/nlattr.o
  AR       /tmp/build/perf/libsubcmd.a
  HOSTLD   /tmp/build/perf/pmu-events/jevents-in.o
  LD       /tmp/build/perf/libbpf-in.o
  MKDIR    /tmp/build/perf/jvmti/
  LINK     /tmp/build/perf/libbpf.a
  CC       /tmp/build/perf/jvmti/libjvmti.o
  MKDIR    /tmp/build/perf/jvmti/
  GEN      perf-archive
  CC       /tmp/build/perf/jvmti/jvmti_agent.o
  GEN      perf-with-kcore
  CC       /tmp/build/perf/plugin_jbd2.o
  MKDIR    /tmp/build/perf/ui/gtk/
  MKDIR    /tmp/build/perf/ui/gtk/
  CC       /tmp/build/perf/ui/gtk/browser.o
  CC       /tmp/build/perf/ui/gtk/hists.o
  LD       /tmp/build/perf/jvmti/jvmti-in.o
  LD       /tmp/build/perf/plugin_jbd2-in.o
  MKDIR    /tmp/build/perf/ui/gtk/
  CC       /tmp/build/perf/ui/gtk/setup.o
  CC       /tmp/build/perf/ui/gtk/util.o
  CC       /tmp/build/perf/ui/gtk/helpline.o
  CC       /tmp/build/perf/ui/gtk/progress.o
  CC       /tmp/build/perf/ui/gtk/annotate.o
  CC       /tmp/build/perf/plugin_hrtimer.o
  MKDIR    /tmp/build/perf/util/
  CC       /tmp/build/perf/util/annotate.o
  LD       /tmp/build/perf/plugin_hrtimer-in.o
  CC       /tmp/build/perf/plugin_kmem.o
  LD       /tmp/build/perf/plugin_kmem-in.o
  CC       /tmp/build/perf/plugin_kvm.o
  LD       /tmp/build/perf/plugin_kvm-in.o
  CC       /tmp/build/perf/plugin_mac80211.o
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  CC       /tmp/build/perf/plugin_sched_switch.o
  LD       /tmp/build/perf/plugin_sched_switch-in.o
  CC       /tmp/build/perf/plugin_function.o
  LD       /tmp/build/perf/plugin_function-in.o
  MKDIR    /tmp/build/perf/util/
  CC       /tmp/build/perf/util/block-range.o
  CC       /tmp/build/perf/plugin_xen.o
  LD       /tmp/build/perf/plugin_xen-in.o
  CC       /tmp/build/perf/plugin_scsi.o
  LD       /tmp/build/perf/ui/gtk/gtk-in.o
  LD       /tmp/build/perf/plugin_scsi-in.o
  CC       /tmp/build/perf/plugin_cfg80211.o
  LD       /tmp/build/perf/gtk-in.o
  LD       /tmp/build/perf/plugin_cfg80211-in.o
  LINK     /tmp/build/perf/plugin_jbd2.so
  CC       /tmp/build/perf/builtin-bench.o
  LINK     /tmp/build/perf/plugin_hrtimer.so
  LINK     /tmp/build/perf/plugin_kmem.so
  CC       /tmp/build/perf/builtin-annotate.o
  LINK     /tmp/build/perf/plugin_kvm.so
  LINK     /tmp/build/perf/plugin_mac80211.so
  LINK     /tmp/build/perf/plugin_sched_switch.so
  LINK     /tmp/build/perf/pmu-events/jevents
  LINK     /tmp/build/perf/plugin_function.so
  LINK     /tmp/build/perf/libperf-jvmti.so
  LINK     /tmp/build/perf/plugin_xen.so
  GEN      /tmp/build/perf/pmu-events/pmu-events.c
  LINK     /tmp/build/perf/plugin_scsi.so
  LINK     /tmp/build/perf/plugin_cfg80211.so
  GEN      /tmp/build/perf/libtraceevent-dynamic-list
  CC       /tmp/build/perf/builtin-config.o
  CC       /tmp/build/perf/pmu-events/pmu-events.o
  INSTALL  trace_plugins
  CC       /tmp/build/perf/builtin-diff.o
  LD       /tmp/build/perf/pmu-events/pmu-events-in.o
  GEN      /tmp/build/perf/python/perf.so
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  CC       /tmp/build/perf/util/ctype.o
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  CC       /tmp/build/perf/util/db-export.o
  CC       /tmp/build/perf/builtin-ftrace.o
  CC       /tmp/build/perf/util/env.o
  CC       /tmp/build/perf/util/event.o
  CC       /tmp/build/perf/util/evlist.o
  CC       /tmp/build/perf/builtin-help.o
  CC       /tmp/build/perf/builtin-sched.o
  CC       /tmp/build/perf/util/evsel.o
  CC       /tmp/build/perf/util/evsel_fprintf.o
  CC       /tmp/build/perf/util/find_bit.o
  CC       /tmp/build/perf/util/kallsyms.o
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  CC       /tmp/build/perf/util/llvm-utils.o
  CC       /tmp/build/perf/util/mmap.o
  CC       /tmp/build/perf/util/memswap.o
  CC       /tmp/build/perf/builtin-buildid-list.o
  BISON    /tmp/build/perf/util/parse-events-bison.c
  CC       /tmp/build/perf/util/perf_regs.o
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  CC       /tmp/build/perf/util/print_binary.o
  CC       /tmp/build/perf/util/rbtree.o
  CC       /tmp/build/perf/builtin-buildid-cache.o
  CC       /tmp/build/perf/builtin-kallsyms.o
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  CC       /tmp/build/perf/util/libstring.o
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  CC       /tmp/build/perf/arch/common.o
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  CC       /tmp/build/perf/util/strfilter.o
  CC       /tmp/build/perf/util/top.o
  MKDIR    /tmp/build/perf/arch/x86/util/
  CC       /tmp/build/perf/arch/x86/util/header.o
  MKDIR    /tmp/build/perf/arch/x86/util/
  CC       /tmp/build/perf/arch/x86/util/tsc.o
  CC       /tmp/build/perf/arch/x86/util/pmu.o
  CC       /tmp/build/perf/util/usage.o
  CC       /tmp/build/perf/util/dso.o
  MKDIR    /tmp/build/perf/arch/x86/tests/
  CC       /tmp/build/perf/arch/x86/tests/regs_load.o
  MKDIR    /tmp/build/perf/arch/x86/tests/
  CC       /tmp/build/perf/arch/x86/tests/dwarf-unwind.o
  CC       /tmp/build/perf/arch/x86/util/kvm-stat.o
  CC       /tmp/build/perf/arch/x86/tests/arch-tests.o
  CC       /tmp/build/perf/arch/x86/tests/rdpmc.o
  CC       /tmp/build/perf/arch/x86/tests/perf-time-to-tsc.o
  CC       /tmp/build/perf/arch/x86/util/perf_regs.o
  CC       /tmp/build/perf/arch/x86/util/group.o
  CC       /tmp/build/perf/arch/x86/util/machine.o
  CC       /tmp/build/perf/arch/x86/tests/insn-x86.o
  CC       /tmp/build/perf/arch/x86/util/event.o
  LD       /tmp/build/perf/arch/x86/tests/libperf-in.o
  CC       /tmp/build/perf/arch/x86/util/dwarf-regs.o
  CC       /tmp/build/perf/arch/x86/util/unwind-libunwind.o
  CC       /tmp/build/perf/arch/x86/util/auxtrace.o
  CC       /tmp/build/perf/arch/x86/util/intel-pt.o
  CC       /tmp/build/perf/util/symbol.o
  CC       /tmp/build/perf/util/symbol_fprintf.o
  CC       /tmp/build/perf/util/color.o
  CC       /tmp/build/perf/util/metricgroup.o
  CC       /tmp/build/perf/arch/x86/util/intel-bts.o
  CC       /tmp/build/perf/util/header.o
  LD       /tmp/build/perf/arch/x86/util/libperf-in.o
  LD       /tmp/build/perf/arch/x86/libperf-in.o
  LD       /tmp/build/perf/arch/libperf-in.o
  CC       /tmp/build/perf/ui/setup.o
  CC       /tmp/build/perf/ui/helpline.o
  CC       /tmp/build/perf/ui/progress.o
  CC       /tmp/build/perf/ui/util.o
  CC       /tmp/build/perf/ui/hist.o
  CC       /tmp/build/perf/builtin-report.o
  CC       /tmp/build/perf/util/callchain.o
  CC       /tmp/build/perf/builtin-stat.o
  MKDIR    /tmp/build/perf/ui/stdio/
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  CC       /tmp/build/perf/util/values.o
  CC       /tmp/build/perf/util/debug.o
  CC       /tmp/build/perf/util/machine.o
  CC       /tmp/build/perf/ui/browser.o
  CC       /tmp/build/perf/util/map.o
  MKDIR    /tmp/build/perf/ui/browsers/
  CC       /tmp/build/perf/ui/browsers/annotate.o
  CC       /tmp/build/perf/builtin-timechart.o
  MKDIR    /tmp/build/perf/ui/browsers/
  CC       /tmp/build/perf/ui/browsers/hists.o
  CC       /tmp/build/perf/builtin-top.o
  CC       /tmp/build/perf/util/pstack.o
  CC       /tmp/build/perf/util/session.o
  CC       /tmp/build/perf/util/syscalltbl.o
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  CC       /tmp/build/perf/util/namespaces.o
  CC       /tmp/build/perf/util/comm.o
  CC       /tmp/build/perf/builtin-kmem.o
  CC       /tmp/build/perf/util/thread.o
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  CC       /tmp/build/perf/util/trace-event-parse.o
  CC       /tmp/build/perf/util/parse-events-bison.o
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  CC       /tmp/build/perf/ui/browsers/map.o
  CC       /tmp/build/perf/ui/browsers/scripts.o
  BISON    /tmp/build/perf/util/pmu-bison.c
  CC       /tmp/build/perf/ui/browsers/header.o
  CC       /tmp/build/perf/util/trace-event-read.o
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  CC       /tmp/build/perf/builtin-kvm.o
  CC       /tmp/build/perf/builtin-inject.o
  LD       /tmp/build/perf/ui/browsers/libperf-in.o
  MKDIR    /tmp/build/perf/ui/tui/
  CC       /tmp/build/perf/ui/tui/setup.o
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  CC       /tmp/build/perf/ui/tui/util.o
  CC       /tmp/build/perf/util/trace-event-scripting.o
  CC       /tmp/build/perf/util/trace-event.o
  CC       /tmp/build/perf/ui/tui/helpline.o
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  LD       /tmp/build/perf/ui/tui/libperf-in.o
  LD       /tmp/build/perf/ui/libperf-in.o
  CC       /tmp/build/perf/util/svghelper.o
  CC       /tmp/build/perf/util/sort.o
  CC       /tmp/build/perf/util/hist.o
  CC       /tmp/build/perf/builtin-mem.o
  CC       /tmp/build/perf/builtin-data.o
  CC       /tmp/build/perf/builtin-version.o
  CC       /tmp/build/perf/builtin-c2c.o
  CC       /tmp/build/perf/builtin-trace.o
  CC       /tmp/build/perf/util/util.o
  CC       /tmp/build/perf/util/xyarray.o
  CC       /tmp/build/perf/util/cpumap.o
  CC       /tmp/build/perf/util/cgroup.o
  MKDIR    /tmp/build/perf/scripts/perl/Perf-Trace-Util/
  CC       /tmp/build/perf/scripts/perl/Perf-Trace-Util/Context.o
  CC       /tmp/build/perf/builtin-probe.o
  LD       /tmp/build/perf/scripts/perl/Perf-Trace-Util/libperf-in.o
  CC       /tmp/build/perf/util/target.o
  MKDIR    /tmp/build/perf/scripts/python/Perf-Trace-Util/
  CC       /tmp/build/perf/scripts/python/Perf-Trace-Util/Context.o
  CC       /tmp/build/perf/util/rblist.o
  LD       /tmp/build/perf/scripts/python/Perf-Trace-Util/libperf-in.o
  LD       /tmp/build/perf/scripts/libperf-in.o
  CC       /tmp/build/perf/util/intlist.o
  CC       /tmp/build/perf/util/vdso.o
  CC       /tmp/build/perf/util/counts.o
  MKDIR    /tmp/build/perf/bench/
  CC       /tmp/build/perf/bench/sched-messaging.o
  CC       /tmp/build/perf/trace/beauty/clone.o
  CC       /tmp/build/perf/util/stat.o
  MKDIR    /tmp/build/perf/bench/
  CC       /tmp/build/perf/bench/sched-pipe.o
  CC       /tmp/build/perf/trace/beauty/fcntl.o
  CC       /tmp/build/perf/trace/beauty/flock.o
  CC       /tmp/build/perf/bench/mem-functions.o
  MKDIR    /tmp/build/perf/tests/
  CC       /tmp/build/perf/trace/beauty/ioctl.o
  CC       /tmp/build/perf/tests/builtin-test.o
  CC       /tmp/build/perf/trace/beauty/kcmp.o
  CC       /tmp/build/perf/trace/beauty/pkey_alloc.o
  CC       /tmp/build/perf/trace/beauty/prctl.o
  CC       /tmp/build/perf/trace/beauty/statx.o
  LD       /tmp/build/perf/trace/beauty/libperf-in.o
  CC       /tmp/build/perf/util/stat-shadow.o
  MKDIR    /tmp/build/perf/tests/
  CC       /tmp/build/perf/bench/futex-hash.o
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  CC       /tmp/build/perf/bench/futex-wake.o
  CC       /tmp/build/perf/bench/futex-wake-parallel.o
  CC       /tmp/build/perf/bench/futex-requeue.o
  CC       /tmp/build/perf/bench/futex-lock-pi.o
  CC       /tmp/build/perf/bench/mem-memcpy-x86-64-asm.o
  CC       /tmp/build/perf/util/record.o
  CC       /tmp/build/perf/util/srcline.o
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  CC       /tmp/build/perf/bench/numa.o
  LD       /tmp/build/perf/bench/perf-in.o
  CC       /tmp/build/perf/util/data.o
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  CC       /tmp/build/perf/tests/attr.o
  CC       /tmp/build/perf/tests/vmlinux-kallsyms.o
  MKDIR    /tmp/build/perf/util/intel-pt-decoder/
  CC       /tmp/build/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.o
  MKDIR    /tmp/build/perf/util/intel-pt-decoder/
  GEN      /tmp/build/perf/util/intel-pt-decoder/inat-tables.c
  CC       /tmp/build/perf/tests/openat-syscall.o
  CC       /tmp/build/perf/util/intel-pt-decoder/intel-pt-log.o
  CC       /tmp/build/perf/util/intel-pt-decoder/intel-pt-decoder.o
  CC       /tmp/build/perf/tests/openat-syscall-all-cpus.o
Warning: Intel PT: x86 instruction decoder header at 'tools/perf/util/intel-pt-decoder/insn.h' differs from latest version at 'arch/x86/include/asm/insn.h'
  CC       /tmp/build/perf/util/intel-pt-decoder/intel-pt-insn-decoder.o
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  CC       /tmp/build/perf/tests/llvm.o
  CC       /tmp/build/perf/tests/bpf.o
  CC       /tmp/build/perf/tests/topology.o
  CC       /tmp/build/perf/util/unwind-libunwind.o
  CC       /tmp/build/perf/tests/mem.o
  CC       /tmp/build/perf/util/data-convert-bt.o
  CC       /tmp/build/perf/tests/cpumap.o
  CC       /tmp/build/perf/util/zlib.o
  CC       /tmp/build/perf/tests/stat.o
  CC       /tmp/build/perf/util/lzma.o
  CC       /tmp/build/perf/tests/event_update.o
  CC       /tmp/build/perf/util/demangle-java.o
  CC       /tmp/build/perf/tests/event-times.o
  CC       /tmp/build/perf/util/demangle-rust.o
  CC       /tmp/build/perf/tests/expr.o
  CC       /tmp/build/perf/tests/backward-ring-buffer.o
  CC       /tmp/build/perf/util/jitdump.o
  CC       /tmp/build/perf/tests/sdt.o
  CC       /tmp/build/perf/tests/is_printable_array.o
  CC       /tmp/build/perf/tests/bitmap.o
  CC       /tmp/build/perf/tests/perf-hooks.o
  CC       /tmp/build/perf/tests/clang.o
  CC       /tmp/build/perf/util/genelf.o
  CC       /tmp/build/perf/tests/unit_number__scnprintf.o
  CC       /tmp/build/perf/util/genelf_debug.o
  CC       /tmp/build/perf/util/perf-hooks.o
  CC       /tmp/build/perf/tests/mem2node.o
  CC       /tmp/build/perf/tests/dwarf-unwind.o
  FLEX     /tmp/build/perf/util/parse-events-flex.c
  FLEX     /tmp/build/perf/util/pmu-flex.c
  CC       /tmp/build/perf/util/pmu-bison.o
  CC       /tmp/build/perf/tests/llvm-src-base.o
  CC       /tmp/build/perf/tests/llvm-src-kbuild.o
  CC       /tmp/build/perf/tests/llvm-src-prologue.o
  CC       /tmp/build/perf/tests/llvm-src-relocation.o
  CC       /tmp/build/perf/util/expr-bison.o
  CC       /tmp/build/perf/util/parse-events.o
  CC       /tmp/build/perf/util/parse-events-flex.o
  CC       /tmp/build/perf/util/pmu.o
  LD       /tmp/build/perf/tests/perf-in.o
  CC       /tmp/build/perf/util/pmu-flex.o
  LD       /tmp/build/perf/perf-in.o
  LD       /tmp/build/perf/util/libperf-in.o
  LD       /tmp/build/perf/libperf-in.o
  AR       /tmp/build/perf/libperf.a
  LINK     /tmp/build/perf/libperf-gtk.so
  LINK     /tmp/build/perf/perf
  INSTALL  GTK UI
  INSTALL  binaries
  INSTALL  tests
  INSTALL  libperf-jvmti.so
  INSTALL  libexec
  INSTALL  lib
  INSTALL  include/bpf
  INSTALL  lib
  INSTALL  examples/bpf
  INSTALL  perf-archive
  INSTALL  perf-with-kcore
  INSTALL  strace/groups
  INSTALL  perl-scripts
  INSTALL  python-scripts
  INSTALL  perf_completion-script
  INSTALL  perf-tip

make: Leaving directory '/home/acme/git/perf/tools/perf' [acme@seventh perf]$

I have no objection but currently it is (theoretically) possible to compile Intel PT decoding support into perf script and perf report for any architecture. i.e. decoding Intel PT from a perf.data file does not depend on the build architecture.

Em Wed, May 30, 2018 at 09:30:50AM +0300, Adrian Hunter escreveu:

Right, being on the tools/arch/ will not preclude it from being built and linked in the other arches, I'll make sure it continues being built there as well.

Thanks!

- Arnaldo