tools/testing/ktest/examples/bootconfigs/boottrace.bconf

   1 ftrace.event {
   2         task.task_newtask {
   3                 filter = "pid < 128"
   4                 enable
   5         }
   6         kprobes.vfs_read {
   7                 probes = "vfs_read $arg1 $arg2"
   8                 filter = "common_pid < 200"
   9                 enable
  10         }
  11         synthetic.initcall_latency {
  12                 fields = "unsigned long func", "u64 lat"
  13                 hist {
  14                         keys = func.sym,lat
  15                         values = lat
  16                         sort = lat
  17                 }
  18         }
  19         initcall.initcall_start.hist {
  20                 keys = func;
  21                 var.ts0 = common_timestamp.usecs
  22         }
  23         initcall.initcall_finish.hist {
  24                 keys = func
  25                 var.lat = common_timestamp.usecs - $ts0
  26                 onmatch {
  27                         event = initcall.initcall_start
  28                         trace = initcall_latency, func, $lat
  29                 }
  30         }
  31 }
  32
  33 ftrace.instance {
  34         foo {
  35                 tracer = "function"
  36                 ftrace.filters = "user_*"
  37                 cpumask = 1
  38                 options = nosym-addr
  39                 buffer_size = 512KB
  40                 trace_clock = mono
  41                 event.signal.signal_deliver.actions=snapshot
  42         }
  43         bar {
  44                 tracer = "function"
  45                 ftrace.filters = "kernel_*"
  46                 cpumask = 2
  47                 trace_clock = x86-tsc
  48         }
  49 }
  50
  51 ftrace.alloc_snapshot
  52
  53 kernel {
  54         trace_options = sym-addr
  55         trace_event = "initcall:*"
  56         trace_buf_size = 1M
  57         ftrace = function
  58         ftrace_filter = "vfs*"
  59 }