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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*"
}
|
