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f9db0d0f1b
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Kan Liang f9db0d0f1b perf callchain: Allow disabling call graphs per event 
This patch introduce "call-graph=no" to disable per-event callgraph.

Here is an example.

  perf record -e 'cpu/cpu-cycles,call-graph=fp/,cpu/instructions,call-graph=no/' sleep 1

  perf report --stdio

  # To display the perf.data header info, please use
  --header/--header-only options.
  #
  #
  # Total Lost Samples: 0
  #
  # Samples: 6  of event 'cpu/cpu-cycles,call-graph=fp/'
  # Event count (approx.): 774218
  #
  # Children      Self  Command  Shared Object     Symbol
  # ........  ........  .......  ................  ........................................
  #
    61.94%     0.00%  sleep    [kernel.vmlinux]  [k] entry_SYSCALL_64_fastpath
              |
              ---entry_SYSCALL_64_fastpath
                 |
                 |--97.30%-- __brk
                 |
                  --2.70%-- mmap64
                            _dl_check_map_versions
                            _dl_check_all_versions

    61.94%     0.00%  sleep    [kernel.vmlinux]  [k] perf_event_mmap
              |
              ---perf_event_mmap
                 |
                 |--97.30%-- do_brk
                 |          sys_brk
                 |          entry_SYSCALL_64_fastpath
                 |          __brk
                 |
                  --2.70%-- mmap_region
                            do_mmap_pgoff
                            vm_mmap_pgoff
                            sys_mmap_pgoff
                            sys_mmap
                            entry_SYSCALL_64_fastpath
                            mmap64
                            _dl_check_map_versions
                            _dl_check_all_versions
  ......

  # Samples: 6  of event 'cpu/instructions,call-graph=no/'
  # Event count (approx.): 359692
  #
  # Children      Self  Command  Shared Object     Symbol
  # ........  ........  .......  ................  .................................
  #
     89.03%     0.00%  sleep    [unknown]         [.] 0xffff6598ffff6598
     89.03%     0.00%  sleep    ld-2.17.so        [.] _dl_resolve_conflicts
     89.03%     0.00%  sleep    [kernel.vmlinux]  [k] page_fault

Signed-off-by: Kan Liang <kan.liang@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1439289050-40510-2-git-send-email-kan.liang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-12 13:20:28 -03:00
..
arch tools include: Add basic atomic.h implementation from the kernel sources 2015-05-08 16:11:05 -03:00
build bpf tools: Introduce 'bpf' library and add bpf feature check 2015-08-07 10:16:56 -03:00
cgroup
firewire
hv Drivers: hv: fcopy: full handshake support 2015-05-24 12:17:42 -07:00
iio tools:iio:iio_utils: pass strings as const 2015-06-01 08:40:26 +01:00
include tools: Copy rbtree_augmented.h from the kernel 2015-07-05 22:59:05 -03:00
laptop/freefall Move freefall program from Documentation/ to tools/ 2015-06-08 16:42:07 -06:00
lguest tools/lguest: don't use legacy definitions for net device in example launcher. 2015-02-13 17:15:55 +10:30
lib bpf tools: Link all bpf objects onto a list 2015-08-07 10:16:59 -03:00
net tools: bpf_jit_disasm: fix segfault on disabled debugging log output 2015-05-27 00:24:10 -04:00
nfsd
perf perf callchain: Allow disabling call graphs per event 2015-08-12 13:20:28 -03:00
power Additional ACPICA material for v4.2-rc1 2015-07-02 17:11:28 -07:00
scripts
testing tools/testing/nvdimm: add mock acpi_nfit_flush_address entries to nfit_test 2015-07-10 14:07:03 -04:00
thermal/tmon tools/thermal: tmon: fixed the 'make install' command 2015-05-09 13:36:58 +08:00
time
usb tools: ffs-aio-example: use endpoint addresses from descriptors 2015-01-15 09:41:49 -06:00
virtio tools/virtio: add virtio 1.0 in vringh_test 2014-12-15 23:49:22 +02:00
vm tools: Fix tools/vm build 2015-05-12 18:11:06 -03:00
Makefile Staging driver patches for 4.2-rc1 2015-06-26 15:46:08 -07:00