Merge tag 'trace-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing updates from Steven Rostedt:
 "This release has a few updates:

   - STM can hook into the function tracer
   - Function filtering now supports more advance glob matching
   - Ftrace selftests updates and added tests
   - Softirq tag in traces now show only softirqs
   - ARM nop added to non traced locations at compile time
   - New trace_marker_raw file that allows for binary input
   - Optimizations to the ring buffer
   - Removal of kmap in trace_marker
   - Wakeup and irqsoff tracers now adhere to the set_graph_notrace file
   - Other various fixes and clean ups"

* tag 'trace-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (42 commits)
  selftests: ftrace: Shift down default message verbosity
  kprobes/trace: Fix kprobe selftest for newer gcc
  tracing/kprobes: Add a helper method to return number of probe hits
  tracing/rb: Init the CPU mask on allocation
  tracing: Use SOFTIRQ_OFFSET for softirq dectection for more accurate results
  tracing/fgraph: Have wakeup and irqsoff tracers ignore graph functions too
  fgraph: Handle a case where a tracer ignores set_graph_notrace
  tracing: Replace kmap with copy_from_user() in trace_marker writing
  ftrace/x86_32: Set ftrace_stub to weak to prevent gcc from using short jumps to it
  tracing: Allow benchmark to be enabled at early_initcall()
  tracing: Have system enable return error if one of the events fail
  tracing: Do not start benchmark on boot up
  tracing: Have the reg function allow to fail
  ring-buffer: Force rb_end_commit() and rb_set_commit_to_write() inline
  ring-buffer: Froce rb_update_write_stamp() to be inlined
  ring-buffer: Force inline of hotpath helper functions
  tracing: Make __buffer_unlock_commit() always_inline
  tracing: Make tracepoint_printk a static_key
  ring-buffer: Always inline rb_event_data()
  ring-buffer: Make rb_reserve_next_event() always inlined
  ...
此提交包含在:
Linus Torvalds
2016-12-15 13:49:34 -08:00
當前提交 179a7ba680
共有 52 個檔案被更改,包括 1065 行新增301 行删除

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@@ -189,16 +189,13 @@ And for string fields they are:
==, !=, ~
The glob (~) only accepts a wild card character (*) at the start and or
end of the string. For example:
The glob (~) accepts a wild card character (*,?) and character classes
([). For example:
prev_comm ~ "*sh"
prev_comm ~ "sh*"
prev_comm ~ "*sh*"
But does not allow for it to be within the string:
prev_comm ~ "ba*sh" <-- is invalid
prev_comm ~ "ba*sh"
5.2 Setting filters
-------------------

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@@ -416,6 +416,12 @@ of ftrace. Here is a list of some of the key files:
trace_fd = open("trace_marker", WR_ONLY);
trace_marker_raw:
This is similar to trace_marker above, but is meant for for binary data
to be written to it, where a tool can be used to parse the data
from trace_pipe_raw.
uprobe_events:
Add dynamic tracepoints in programs.
@@ -2238,16 +2244,13 @@ hrtimer_interrupt
sys_nanosleep
Perhaps this is not enough. The filters also allow simple wild
cards. Only the following are currently available
Perhaps this is not enough. The filters also allow glob(7) matching.
<match>* - will match functions that begin with <match>
*<match> - will match functions that end with <match>
*<match>* - will match functions that have <match> in it
These are the only wild cards which are supported.
<match>*<match> will not work.
<match1>*<match2> - will match functions that begin with
<match1> and end with <match2>
Note: It is better to use quotes to enclose the wild cards,
otherwise the shell may expand the parameters into names