Steven Rostedt (VMware)
dcc19d2809
tracing/ftrace: Allow for instances to trigger their own stacktrace probes
...
Have the stacktrace function trigger probe trigger stack traces within the
instance that they were added to in the set_ftrace_filter.
># cd /sys/kernel/debug/tracing
># mkdir instances/foo
># cd instances/foo
># echo schedule:stacktrace:1 > set_ftrace_filter
># cat trace
# tracer: nop
#
# entries-in-buffer/entries-written: 1/1 #P:4
#
# _-----=> irqs-off
# / _----=> need-resched
# | / _---=> hardirq/softirq
# || / _--=> preempt-depth
# ||| / delay
# TASK-PID CPU# |||| TIMESTAMP FUNCTION
# | | | |||| | |
<idle>-0 [001] .N.2 202.585010: <stack trace>
=>
=> schedule
=> schedule_preempt_disabled
=> do_idle
=> cpu_startup_entry
=> start_secondary
=> verify_cpu
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2017-04-20 22:06:49 -04:00
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