• Andi Kleen's avatar
    perf script: Add --insn-trace for instruction decoding · b585ebdb
    Andi Kleen authored
    Add a --insn-trace short hand option for decoding and disassembling
    instruction streams for intel_pt. This automatically pipes the output
    into the xed disassembler to generate disassembled instructions.  This
    just makes this use model much nicer to use.
    
    Before
    
      % perf record -e intel_pt// ...
      % perf script --itrace=i0ns --ns -F +insn,-event,-period | xed -F insn: -A -64
       swapper 0 [000] 17276.429606186: ffffffff81010486 pt_config ([kernel.kallsyms])    nopl  %eax, (%rax,%rax,1)
       swapper 0 [000] 17276.429606186: ffffffff8101048b pt_config ([kernel.kallsyms])    add $0x10, %rsp
       swapper 0 [000] 17276.429606186: ffffffff8101048f pt_config ([kernel.kallsyms])    popq  %rbx
       swapper 0 [000] 17276.429606186: ffffffff81010490 pt_config ([kernel.kallsyms])    popq  %rbp
       swapper 0 [000] 17276.429606186: ffffffff81010491 pt_config ([kernel.kallsyms])    popq  %r12
       swapper 0 [000] 17276.429606186: ffffffff81010493 pt_config ([kernel.kallsyms])    popq  %r13
       swapper 0 [000] 17276.429606186: ffffffff81010495 pt_config ([kernel.kallsyms])    popq  %r14
       swapper 0 [000] 17276.429606186: ffffffff81010497 pt_config ([kernel.kallsyms])    popq  %r15
       swapper 0 [000] 17276.429606186: ffffffff81010499 pt_config ([kernel.kallsyms])    retq
       swapper 0 [000] 17276.429606186: ffffffff8101063e pt_event_add ([kernel.kallsyms])         cmpl  $0x1, 0x1b0(%rbx)
       swapper 0 [000] 17276.429606186: ffffffff81010645 pt_event_add ([kernel.kallsyms])         mov $0xffffffea, %eax
       swapper 0 [000] 17276.429606186: ffffffff8101064a pt_event_add ([kernel.kallsyms])         mov $0x0, %edx
       swapper 0 [000] 17276.429606186: ffffffff8101064f pt_event_add ([kernel.kallsyms])         popq  %rbx
       swapper 0 [000] 17276.429606186: ffffffff81010650 pt_event_add ([kernel.kallsyms])         cmovnz %edx, %eax
       swapper 0 [000] 17276.429606186: ffffffff81010653 pt_event_add ([kernel.kallsyms])         jmp 0xffffffff81010635
       swapper 0 [000] 17276.429606186: ffffffff81010635 pt_event_add ([kernel.kallsyms])         retq
       swapper 0 [000] 17276.429606186: ffffffff8115e687 event_sched_in.isra.107 ([kernel.kallsyms])       test %eax, %eax
    
    Now:
    
      % perf record -e intel_pt// ...
      % perf script --insn-trace --xed
      ... same output ...
    
    XED needs to be installed with:
    
      $ git clone https://github.com/intelxed/mbuild.git mbuild
      $ git clone https://github.com/intelxed/xed
      $ cd xed
      $ ./mfile.py
      $ ./mfile.py examples
      $ sudo ./mfile.py --prefix=/usr/local install
      $ sudo cp obj/examples/xed /usr/local/bin
      $ xed | head -3
      ERROR: required argument(s) were missing
      Copyright (C) 2017, Intel Corporation. All rights reserved.
      XED version: [v10.0-328-g7d62c8c49b7b]
      $
    Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
    Tested-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    Acked-by: default avatarJiri Olsa <jolsa@kernel.org>
    Link: http://lkml.kernel.org/r/20180920180540.14039-2-andi@firstfloor.org
    [ Fixed up whitespace damage, added the 'mfile.py examples + cp obj/examples/xed ... ]
    Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    b585ebdb
build-xed.txt 526 Bytes