• Jin Yao's avatar
    perf report: Sort by sampled cycles percent per block for tui · 7fa46cbf
    Jin Yao authored
    Previous patch has implemented a new option "--total-cycles".  But only
    stdio mode is supported.
    
    This patch supports the tui mode and support '--percent-limit'.
    
    For example,
    
     perf record -b ./div
     perf report --total-cycles --percent-limit 1
    
     # Samples: 2753248 of event 'cycles'
     Sampled Cycles%  Sampled Cycles  Avg Cycles%  Avg Cycles                                              [Program Block Range]         Shared Object
              26.04%            2.8M        0.40%          18                                             [div.c:42 -> div.c:39]                   div
              15.17%            1.2M        0.16%           7                                 [random_r.c:357 -> random_r.c:380]          libc-2.27.so
               5.11%          402.0K        0.04%           2                                             [div.c:27 -> div.c:28]                   div
               4.87%          381.6K        0.04%           2                                     [random.c:288 -> random.c:291]          libc-2.27.so
               4.53%          381.0K        0.04%           2                                             [div.c:40 -> div.c:40]                   div
               3.85%          300.9K        0.02%           1                                             [div.c:22 -> div.c:25]                   div
               3.08%          241.1K        0.02%           1                                           [rand.c:26 -> rand.c:27]          libc-2.27.so
               3.06%          240.0K        0.02%           1                                     [random.c:291 -> random.c:291]          libc-2.27.so
               2.78%          215.7K        0.02%           1                                     [random.c:298 -> random.c:298]          libc-2.27.so
               2.52%          198.3K        0.02%           1                                     [random.c:293 -> random.c:293]          libc-2.27.so
               2.36%          184.8K        0.02%           1                                           [rand.c:28 -> rand.c:28]          libc-2.27.so
               2.33%          180.5K        0.02%           1                                     [random.c:295 -> random.c:295]          libc-2.27.so
               2.28%          176.7K        0.02%           1                                     [random.c:295 -> random.c:295]          libc-2.27.so
               2.20%          168.8K        0.02%           1                                         [rand@plt+0 -> rand@plt+0]                   div
               1.98%          158.2K        0.02%           1                                 [random_r.c:388 -> random_r.c:388]          libc-2.27.so
               1.57%          123.3K        0.02%           1                                             [div.c:42 -> div.c:44]                   div
               1.44%          116.0K        0.42%          19                                 [random_r.c:357 -> random_r.c:394]          libc-2.27.so
    
    --------------------------------------------------
    
     v7:
     ---
     1. Since we have used use_browser in report__browse_block_hists
        to support stdio mode, now we also add supporting for tui.
    
     2. Move block tui browser code from ui/browsers/hists.c
        to block-info.c.
    
     v6:
     ---
     Create report__tui_browse_block_hists in block-info.c
     (codes are moved from builtin-report.c).
    
     v5:
     ---
     Fix a crash issue when running perf report without
     '--total-cycles'. The issue is because the internal flag
     is renamed from 'total_cycles' to 'total_cycles_mode' in
     previous patch but this patch still uses 'total_cycles'
     to check if the '--total-cycles' option is enabled, which
     causes the code to be inconsistent.
    
     v4:
     ---
     Since the block collection is moved out of printing in
     previous patch, this patch is updated accordingly for
     tui supporting.
    
     v3:
     ---
     Minor change since the function name is changed:
     block_total_cycles_percent -> block_info__total_cycles_percent
    Signed-off-by: default avatarJin Yao <yao.jin@linux.intel.com>
    Reviewed-by: default avatarJiri Olsa <jolsa@kernel.org>
    Tested-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
    Cc: Andi Kleen <ak@linux.intel.com>
    Cc: Jin Yao <yao.jin@intel.com>
    Cc: Kan Liang <kan.liang@linux.intel.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Link: http://lore.kernel.org/lkml/20191107074719.26139-8-yao.jin@linux.intel.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    7fa46cbf
hists.h 1.13 KB