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    perf script: Don't disable use_callchain if input is pipe · 71ac899b
    He Kuang 提交于
    Because perf data from pipe do not have a header with evsel attr, we
    should not check that and disable symbol_conf.use_callchain. Otherwise,
    perf script won't show callchains even if the data stream contains
    callchain.
    
    Before:
      $ perf record -g -o - uname |perf script
      Linux
      [ perf record: Woken up 1 times to write data ]
      [ perf record: Captured and wrote 0.000 MB - ]
      uname  1828 182630.186578:  250000 cpu-clock:  ..b9499 setup_arg_pages
      uname  1828 182630.186850:  250000 cpu-clock:  ..83b20 ___might_sleep
      uname  1828 182630.187153:  250000 cpu-clock:  ..4b6be file_map_prot_ch
      ...
    
    After:
      $ perf record -g -o - uname |perf script
      Linux
      [ perf record: Woken up 1 times to write data ]
      [ perf record: Captured and wrote 0.000 MB - ]
      uname  1833 182675.927099:     250000 cpu-clock:
                      ba5520 _raw_spin_lock+0xfe200040 ([kernel.kallsyms])
                      389dd4 expand_downwards+0xfe200154 ([kernel.kallsyms])
                      389f34 expand_stack+0xfe200024 ([kernel.kallsyms])
                      3b957e setup_arg_pages+0xfe20019e ([kernel.kallsyms])
                      40c80f load_elf_binary+0xfe20042f ([kernel.kallsyms])
                      ...
    Signed-off-by: NHe Kuang <hekuang@huawei.com>
    Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
    Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Wang Nan <wangnan0@huawei.com>
    Link: http://lkml.kernel.org/r/1470309943-153909-2-git-send-email-hekuang@huawei.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
    71ac899b
builtin-script.c 61.0 KB