title: Callgraph Tracing with Verbose Arguments
name: para-callgraph-verbose.stp
version: 1.0
author: anonymous
keywords: trace callgraph
subsystem: any
status: proposed
exit: user-controlled
output: trace
scope: system-wide
description: Print a timed per-thread microsecond-timed callgraph, complete with pretty-printed function parameters and return values.  The first parameter names the function probe points to trace.  The optional second parameter names the probe points for trigger functions, which acts to enable tracing for only those functions that occur while the current thread is nested within the trigger.
test_check: stap -p4 para-callgraph-verbose.stp 'kernel.function("*@fs/proc*.c")' 'kernel.function("vfs_read")'
test_installcheck: stap para-callgraph-verbose.stp 'kernel.function("*@fs/proc*.c")' 'kernel.function("vfs_read")' -c "cat /proc/sys/vm/* || true"