• Arnaldo Carvalho de Melo's avatar
    perf trace: Allow asking for not suppressing common string prefixes · c65c83ff
    Arnaldo Carvalho de Melo authored
    So far we've been suppressing common stuff such as "MAP_" in the mmap
    flags, showing "SHARED" instead of "MAP_SHARED", allow for those
    prefixes (and a few suffixes) to be shown:
    
      # trace -e *map,open*,*seek sleep 1
      openat("/etc/ld.so.cache", CLOEXEC) = 3
      mmap(0, 109093, READ, PRIVATE, 3, 0) = 0x7ff61c695000
      openat("/lib64/libc.so.6", CLOEXEC) = 3
      lseek(3, 792, SET) = 792
      mmap(0, 8192, READ|WRITE, PRIVATE|ANONYMOUS) = 0x7ff61c693000
      lseek(3, 792, SET) = 792
      lseek(3, 864, SET) = 864
      mmap(0, 1857568, READ, PRIVATE|DENYWRITE, 3, 0) = 0x7ff61c4cd000
      mmap(0x7ff61c4ef000, 1363968, EXEC|READ, PRIVATE|FIXED|DENYWRITE, 3, 139264) = 0x7ff61c4ef000
      mmap(0x7ff61c63c000, 311296, READ, PRIVATE|FIXED|DENYWRITE, 3, 1503232) = 0x7ff61c63c000
      mmap(0x7ff61c689000, 24576, READ|WRITE, PRIVATE|FIXED|DENYWRITE, 3, 1814528) = 0x7ff61c689000
      mmap(0x7ff61c68f000, 14368, READ|WRITE, PRIVATE|FIXED|ANONYMOUS) = 0x7ff61c68f000
      munmap(0x7ff61c695000, 109093) = 0
      openat("/usr/lib/locale/locale-archive", CLOEXEC) = 3
      mmap(0, 217749968, READ, PRIVATE, 3, 0) = 0x7ff60f523000
      #
      # vim ~/.perfconfig
      #
      # perf config
      llvm.dump-obj=true
      trace.add_events=/home/acme/git/perf/tools/perf/examples/bpf/augmented_raw_syscalls.o
      trace.show_zeros=yes
      trace.show_duration=no
      trace.no_inherit=yes
      trace.show_timestamp=no
      trace.show_arg_names=no
      trace.args_alignment=0
      trace.string_quote="
      trace.show_prefix=yes
      #
      #
      # trace -e *map,open*,*seek sleep 1
      openat(AT_FDCWD, "/etc/ld.so.cache", O_CLOEXEC) = 3
      mmap(0, 109093, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f7ebbe59000
      openat(AT_FDCWD, "/lib64/libc.so.6", O_CLOEXEC) = 3
      lseek(3, 792, SEEK_SET) = 792
      mmap(0, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS) = 0x7f7ebbe57000
      lseek(3, 792, SEEK_SET) = 792
      lseek(3, 864, SEEK_SET) = 864
      mmap(0, 1857568, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7ebbc91000
      mmap(0x7f7ebbcb3000, 1363968, PROT_EXEC|PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 139264) = 0x7f7ebbcb3000
      mmap(0x7f7ebbe00000, 311296, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 1503232) = 0x7f7ebbe00000
      mmap(0x7f7ebbe4d000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 1814528) = 0x7f7ebbe4d000
      mmap(0x7f7ebbe53000, 14368, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS) = 0x7f7ebbe53000
      munmap(0x7f7ebbe59000, 109093) = 0
      openat(AT_FDCWD, "/usr/lib/locale/locale-archive", O_CLOEXEC) = 3
      mmap(0, 217749968, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f7eaece7000
      #
    
    Cc: Adrian Hunter <adrian.hunter@intel.com>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Wang Nan <wangnan0@huawei.com>
    Link: https://lkml.kernel.org/n/tip-mtn1i4rjowjl72trtnbmvjd4@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    c65c83ff
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