• Linus Torvalds's avatar
    Merge tag 'trace-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace · 60eaa019
    Linus Torvalds authored
    Pull tracing updates from Steven Rostedt:
     "This pull request has a new feature to ftrace, namely the trace event
      triggers by Tom Zanussi.  A trigger is a way to enable an action when
      an event is hit.  The actions are:
    
       o  trace on/off - enable or disable tracing
       o  snapshot     - save the current trace buffer in the snapshot
       o  stacktrace   - dump the current stack trace to the ringbuffer
       o  enable/disable events - enable or disable another event
    
      Namhyung Kim added updates to the tracing uprobes code.  Having the
      uprobes add support for fetch methods.
    
      The rest are various bug fixes with the new code, and minor ones for
      the old code"
    
    * tag 'trace-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (38 commits)
      tracing: Fix buggered tee(2) on tracing_pipe
      tracing: Have trace buffer point back to trace_array
      ftrace: Fix synchronization location disabling and freeing ftrace_ops
      ftrace: Have function graph only trace based on global_ops filters
      ftrace: Synchronize setting function_trace_op with ftrace_trace_function
      tracing: Show available event triggers when no trigger is set
      tracing: Consolidate event trigger code
      tracing: Fix counter for traceon/off event triggers
      tracing: Remove double-underscore naming in syscall trigger invocations
      tracing/kprobes: Add trace event trigger invocations
      tracing/probes: Fix build break on !CONFIG_KPROBE_EVENT
      tracing/uprobes: Add @+file_offset fetch method
      uprobes: Allocate ->utask before handler_chain() for tracing handlers
      tracing/uprobes: Add support for full argument access methods
      tracing/uprobes: Fetch args before reserving a ring buffer
      tracing/uprobes: Pass 'is_return' to traceprobe_parse_probe_arg()
      tracing/probes: Implement 'memory' fetch method for uprobes
      tracing/probes: Add fetch{,_size} member into deref fetch method
      tracing/probes: Move 'symbol' fetch method to kprobes
      tracing/probes: Implement 'stack' fetch method for uprobes
      ...
    60eaa019
ftrace.c 117 KB