ftrace.event { task.task_newtask { filter = "pid < 128" enable } kprobes.vfs_read { probes = "vfs_read $arg1 $arg2" filter = "common_pid < 200" enable } synthetic.initcall_latency { fields = "unsigned long func", "u64 lat" hist { keys = func.sym,lat values = lat sort = lat } } initcall.initcall_start.hist { keys = func; var.ts0 = common_timestamp.usecs } initcall.initcall_finish.hist { keys = func var.lat = common_timestamp.usecs - $ts0 onmatch { event = initcall.initcall_start trace = initcall_latency, func, $lat } }} ftrace.instance { foo { tracer = "function" ftrace.filters = "user_*" cpumask = 1 options = nosym-addr buffer_size = 512KB trace_clock = mono event.signal.signal_deliver.actions=snapshot } bar { tracer = "function" ftrace.filters = "kernel_*" cpumask = 2 trace_clock = x86-tsc }} ftrace.alloc_snapshot kernel { trace_options = sym-addr trace_event = "initcall:*" trace_buf_size = 1M ftrace = function ftrace_filter = "vfs*"}
ftrace.event {
task.task_newtask {
filter = "pid < 128"
enable
}
kprobes.vfs_read {
probes = "vfs_read $arg1 $arg2"
filter = "common_pid < 200"
enable
}
synthetic.initcall_latency {
fields = "unsigned long func", "u64 lat"
hist {
keys = func.sym,lat
values = lat
sort = lat
}
}
initcall.initcall_start.hist {
keys = func;
var.ts0 = common_timestamp.usecs
}
initcall.initcall_finish.hist {
keys = func
var.lat = common_timestamp.usecs - $ts0
onmatch {
event = initcall.initcall_start
trace = initcall_latency, func, $lat
}
}
}
ftrace.instance {
foo {
tracer = "function"
ftrace.filters = "user_*"
cpumask = 1
options = nosym-addr
buffer_size = 512KB
trace_clock = mono
event.signal.signal_deliver.actions=snapshot
}
bar {
tracer = "function"
ftrace.filters = "kernel_*"
cpumask = 2
trace_clock = x86-tsc
}
}
ftrace.alloc_snapshot
kernel {
trace_options = sym-addr
trace_event = "initcall:*"
trace_buf_size = 1M
ftrace = function
ftrace_filter = "vfs*"
}