[for-next][PATCH 00/33] tracing: More updates for 4.12

[Steven Rostedt <rostedt@goodmis.org>]

The biggest change is the rewrite of the function probe trigger code.
I need to make a few enhancements on that code and it was basically
created with a hack on top of an hack, and I didn't want to add more
hacks. Instead, I gutted it and rewrote it in a way that the patch series
is still bisectable. Now the probe triggers can be unique to a tracing
instance. You can add stacktrace to a function within a tracing instance,
or just stop a tracing instance from tracing.


  git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
for-next

Head SHA1: dcc19d28091a86d5baf78e3fbb32e3fc3de524be


Namhyung Kim (2):
      ftrace: Add 'function-fork' trace option
      selftests: ftrace: Add -l/--logdir option

Steven Rostedt (VMware) (31):
      ftrace: Fix removing of second function probe
      ftrace: Fix indexing of t_hash_start() from t_next()
      tracing: Have the trace_event benchmark thread call cond_resched_rcu_qs()
      selftests: ftrace: Add a way to reset triggers in the set_ftrace_filter file
      selftests: ftrace: Add a selftest to test event enable/disable func trigger
      selftests: ftrace: Add a test to test function triggers to start and stop tracing
      selftests: ftrace: Add test to test reading of set_ftrace_file
      ftrace: Move the probe function into the tracing directory
      ftrace: Move the function commands into the tracing directory
      ftrace: Remove unused "flags" field from struct ftrace_func_probe
      ftrace: Pass probe ops to probe function
      ftrace: Added ftrace_func_mapper for function probe triggers
      tracing: Have the snapshot trigger use the mapping helper functions
      ftrace: Convert the rest of the function trigger over to the mapping functions
      ftrace: Remove unused unregister_ftrace_function_probe() function
      ftrace: Remove unused unregister_ftrace_function_probe_all() function
      ftrace: Remove printing of data in showing of a function probe
      ftrace: Remove data field from ftrace_func_probe structure
      ftrace: Add helper function ftrace_hash_move_and_update_ops()
      ftrace: Have unregister_ftrace_function_probe_func() return a value
      ftrace: Have each function probe use its own ftrace_ops
      ftrace: Have the function probes call their own function
      ftrace: If the hash for a probe fails to update then free what was initialized
      tracing: Have the trace_array hold the list of registered func probes
      tracing: Pass the trace_array into ftrace_probe_ops functions
      ftrace: Dynamically create the probe ftrace_ops for the trace_array
      tracing/ftrace: Add a better way to pass data via the probe functions
      tracing/ftrace: Allow instances to have their own function probes
      tracing/ftrace: Enable snapshot function trigger to work with instances
      tracing/ftrace: Allow for the traceonoff probe be unique to instances
      tracing/ftrace: Allow for instances to trigger their own stacktrace probes

----
 include/linux/ftrace.h                             |  47 +-
 kernel/trace/ftrace.c                              | 832 +++++++++++++--------
 kernel/trace/trace.c                               | 133 +++-
 kernel/trace/trace.h                               |  75 +-
 kernel/trace/trace_benchmark.c                     |  14 +-
 kernel/trace/trace_events.c                        | 151 ++--
 kernel/trace/trace_functions.c                     | 224 ++++--
 tools/testing/selftests/ftrace/ftracetest          |   5 +
 .../ftrace/test.d/ftrace/func_event_triggers.tc    | 113 +++
 .../ftrace/test.d/ftrace/func_set_ftrace_file.tc   | 132 ++++
 .../test.d/ftrace/func_traceonoff_triggers.tc      | 171 +++++
 tools/testing/selftests/ftrace/test.d/functions    |  21 +
 12 files changed, 1410 insertions(+), 508 deletions(-)
 create mode 100644 tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc
 create mode 100644 tools/testing/selftests/ftrace/test.d/ftrace/func_set_ftrace_file.tc
 create mode 100644 tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc