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    perf annotate: Show group details on the title line · c0459a09
    Arnaldo Carvalho de Melo 提交于
    To match what is shown in the main 'perf report/top' title lines, i.e.
    if a group is being shown, either a real group (recorded with "-e
    '{a,b,c}') or a forced group (using 'perf report --group' for a
    perf.data file recorded without {}) we will show multiple columns,
    one per event, but we were failing to show the group details, so, for:
    
     # perf report --header-only | grep cmdline
     # cmdline : /home/acme/bin/perf record -e {cycles,instructions,cache-misses}
     # perf report --group
    
    The first line was showing just "cycles", now it shows the correct line,
    which is:
    
      Samples: 578  of events 'anon group { cycles, instructions, cache-misses }', 4000 Hz, Event count (approx.): 487421794
      syscall_return_via_sysret  /lib/modules/4.16.0-rc7/build/vmlinux
        0.22   2.97   0.00 │    ↓ jmp    6c
                           │      mov    %cr3,%rdi
        1.33  10.89   4.00 │    ↓ jmp    62
                           │      mov    %rdi,%rax
    <SNIP>
    
    Cc: Adrian Hunter <adrian.hunter@intel.com>
    Cc: Andi Kleen <ak@linux.intel.com>
    Cc: David Ahern <dsahern@gmail.com>
    Cc: Jin Yao <yao.jin@linux.intel.com>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Wang Nan <wangnan0@huawei.com>
    Fixes: 6920e285 ("perf annotate browser: Show extra title line with event information")
    Link: https://lkml.kernel.org/n/tip-i41tqh17c2dabnyzjh99r1oz@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
    c0459a09
annotate.c 64.7 KB