• Arnaldo Carvalho de Melo's avatar
    perf report: Introduce --mmaps · 6439d7d1
    Arnaldo Carvalho de Melo authored
    Similar to --tasks, producing the same output plus /proc/<PID>/maps
    similar lines for each mmap record present in a perf.data file.
    
    Please note that not all mmaps are stored, for instance, some of the
    non-executable mmaps are only stored when 'perf record --data' is used,
    when the user wants to resolve data accesses in addition to asking for
    executable mmaps to get the DSO with symtabs.
    
    E.g.:
    
      # perf record sleep 1
      [ perf record: Woken up 1 times to write data ]
      [ perf record: Captured and wrote 0.018 MB perf.data (7 samples) ]
      [root@jouet ~]# perf report --mmaps
      #      pid      tid     ppid  comm
               0        0       -1 |swapper
            4137     4137       -1 |sleep
                                      5628a35a1000-5628a37aa000 r-xp 00000000 3147148 /usr/bin/sleep
                                      7fb65ad51000-7fb65b134000 r-xp 00000000 3149795 /usr/lib64/libc-2.26.so
                                      7fb65b134000-7fb65b35e000 r-xp 00000000 3149715 /usr/lib64/ld-2.26.so
                                      7ffd94b9f000-7ffd94ba1000 r-xp 00000000 0 [vdso]
      #
      # perf record sleep 1
      [ perf record: Woken up 1 times to write data ]
      [ perf record: Captured and wrote 0.019 MB perf.data (8 samples) ]
      # perf report --mmaps
      #      pid      tid     ppid  comm
               0        0       -1 |swapper
            4161     4161       -1 |sleep
                                      55afae69a000-55afae8a3000 r-xp 00000000 3147148 /usr/bin/sleep
                                      7f569f00d000-7f569f3f0000 r-xp 00000000 3149795 /usr/lib64/libc-2.26.so
                                      7f569f3f0000-7f569f61a000 r-xp 00000000 3149715 /usr/lib64/ld-2.26.so
                                      7fff6fffe000-7fff70000000 r-xp 00000000 0 [vdso]
      #
      # perf record time sleep 1
      0.00user 0.00system 0:01.00elapsed 0%CPU (0avgtext+0avgdata 2156maxresident)k
      0inputs+0outputs (0major+73minor)pagefaults 0swaps
      [ perf record: Woken up 1 times to write data ]
      [ perf record: Captured and wrote 0.019 MB perf.data (14 samples) ]
      # perf report --mmaps
      #      pid      tid     ppid  comm
               0        0       -1 |swapper
            4281     4281       -1 |time
                                      560560dca000-560560fcf000 r-xp 00000000 3190458 /usr/bin/time
                                      7fc175196000-7fc175579000 r-xp 00000000 3149795 /usr/lib64/libc-2.26.so
                                      7fc175579000-7fc1757a3000 r-xp 00000000 3149715 /usr/lib64/ld-2.26.so
                                      7ffc924f6000-7ffc924f8000 r-xp 00000000 0 [vdso]
            4282     4282     4281 | sleep
                                       560560dca000-560560fcf000 r-xp 00000000 3190458 /usr/bin/time
                                       564b4de3c000-564b4e045000 r-xp 00000000 3147148 /usr/bin/sleep
                                       7f6a5a716000-7f6a5aaf9000 r-xp 00000000 3149795 /usr/lib64/libc-2.26.so
                                       7f6a5aaf9000-7f6a5ad23000 r-xp 00000000 3149715 /usr/lib64/ld-2.26.so
                                       7fc175196000-7fc175579000 r-xp 00000000 3149795 /usr/lib64/libc-2.26.so
                                       7fc175579000-7fc1757a3000 r-xp 00000000 3149715 /usr/lib64/ld-2.26.so
                                       7ffc924f6000-7ffc924f8000 r-xp 00000000 0 [vdso]
                                       7ffcec7e6000-7ffcec7e8000 r-xp 00000000 0 [vdso]
      #
    
    Cc: Adrian Hunter <adrian.hunter@intel.com>
    Cc: David Ahern <dsahern@gmail.com>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Wang Nan <wangnan0@huawei.com>
    Link: https://lkml.kernel.org/n/tip-zulwdlg5rfowogr1qznorvvc@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    6439d7d1
perf-report.txt 16.7 KB