• David Ahern's avatar
    perf script: Add option to stop printing callchain · 64eff7d9
    David Ahern authored
    Allow user to specify list of symbols which cause the dump of callchains
    to stop at that symbol.
    
    Committer notes:
    
    Testing it:
    
      # perf record -ag usleep 1
      [ perf record: Woken up 1 times to write data ]
      [ perf record: Captured and wrote 1.177 MB perf.data (33 samples) ]
      #
      # # Without it:
      #
      # perf script
      swapper   0 [000]  9693.370039:          1 cycles:ppp:
                      2072ad x86_pmu_enable (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      3a29d7 perf_pmu_enable.part.90 (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      3a713a ctx_resched (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      3a76c1 __perf_event_enable (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      3a0390 event_function (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      3a1cff remote_function (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      326978 flush_smp_call_function_queue (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      327413 generic_smp_call_function_single_interrupt (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      249b37 smp_call_function_single_interrupt (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      a04b2c call_function_single_interrupt (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      889427 cpuidle_enter (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      2e534a call_cpuidle (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      2e5730 cpu_startup_entry (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      9f5167 rest_init (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                     137ffeb start_kernel ([kernel.vmlinux].init.text)
                     137f2ca x86_64_start_reservations ([kernel.vmlinux].init.text)
                     137f419 x86_64_start_kernel ([kernel.vmlinux].init.text)
    
      swapper   0 [000]  9693.370044:          1 cycles:ppp:
                      20ca1b intel_pmu_handle_irq (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      205b0c perf_event_nmi_handler (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      22a14a nmi_handle (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      22a6b3 default_do_nmi (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      22a83c do_nmi (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      a03fb1 end_repeat_nmi (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      3a29d7 perf_pmu_enable.part.90 (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      3a713a ctx_resched (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      3a76c1 __perf_event_enable (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      3a0390 event_function (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      3a1cff remote_function (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      326978 flush_smp_call_function_queue (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      327413 generic_smp_call_function_single_interrupt (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      249b37 smp_call_function_single_interrupt (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      a04b2c call_function_single_interrupt (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      889427 cpuidle_enter (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      2e534a call_cpuidle (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      2e5730 cpu_startup_entry (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      9f5167 rest_init (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                     137ffeb start_kernel ([kernel.vmlinux].init.text)
                     137f2ca x86_64_start_reservations ([kernel.vmlinux].init.text)
      #
      # # Using it to see just what are the calls from the 'remote_function' function:
      #
      # perf script --stop-bt remote_function
      swapper   0 [000]  9693.370039:          1 cycles:ppp:
                      2072ad x86_pmu_enable (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      3a29d7 perf_pmu_enable.part.90 (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      3a713a ctx_resched (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      3a76c1 __perf_event_enable (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      3a0390 event_function (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      3a1cff remote_function (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
    
      swapper   0 [000]  9693.370044:          1 cycles:ppp:
                      20ca1b intel_pmu_handle_irq (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      205b0c perf_event_nmi_handler (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      22a14a nmi_handle (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      22a6b3 default_do_nmi (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      22a83c do_nmi (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      a03fb1 end_repeat_nmi (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      3a29d7 perf_pmu_enable.part.90 (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      3a713a ctx_resched (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      3a76c1 __perf_event_enable (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      3a0390 event_function (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
                      3a1cff remote_function (/usr/lib/debug/lib/modules/4.8.8-300.fc25.x86_64/vmlinux)
    Signed-off-by: default avatarDavid Ahern <dsa@cumulusnetworks.com>
    Tested-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Link: http://lkml.kernel.org/r/1480104021-36275-1-git-send-email-dsahern@gmail.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    64eff7d9
evsel_fprintf.c 5.69 KB