forge/linux-pinenote
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Most of the changes were largely clean ups, and some documentation.

Browse source 
But there were a few features that were added.
 
 Uprobes now work with event triggers and multi buffers.
 Uprobes have support under ftrace and perf.
 
 The big feature is that the function tracer can now be used within the
 multi buffer instances. That is, you can now trace some functions
 in one buffer, others in another buffer, all functions in a third buffer
 and so on. They are basically agnostic from each other. This only
 works for the function tracer and not for the function graph trace,
 although you can have the function graph tracer running in the top level
 buffer (or any tracer for that matter) and have different function tracing
 going on in the sub buffers.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABAgAGBQJTOthtAAoJEKQekfcNnQGu5c8H/Ana/U+0tmksp1dbHkRHsKSH
 +Fsv4Jeu8gf1NaFKHEhkUTcFtnzE6qAPV2VCrcJwXbhAhhwZm+LjrnWdoy3215S3
 cQW4LftLEonh2cM36Cos74TulMEYN6XmL6dQZV+CILKQkDrWU4qJjQ64okXEkqrd
 9iG3p/mSXyvJcmnyg61ALnMOhZDLsXY3djBhWBPhiTPGS6BRb9zh4Pmw6Zv0n2rJ
 U93Gt/3AQrv1ybu73dUxqP0abp60oXOiWoF/R2jcbKqIM+K9RPJX79unCV3jq3u9
 f+6jMlB9PgAMqQj6ihJdwxKDDuzwyrVdEPnsgvl4jarCBCtVVwhKedBaKN/KS8k=
 =HdXY
 -----END PGP SIGNATURE-----

Merge tag 'trace-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing updates from Steven Rostedt:
 "Most of the changes were largely clean ups, and some documentation.
  But there were a few features that were added:

  Uprobes now work with event triggers and multi buffers and have
  support under ftrace and perf.

  The big feature is that the function tracer can now be used within the
  multi buffer instances.  That is, you can now trace some functions in
  one buffer, others in another buffer, all functions in a third buffer
  and so on.  They are basically agnostic from each other.  This only
  works for the function tracer and not for the function graph trace,
  although you can have the function graph tracer running in the top
  level buffer (or any tracer for that matter) and have different
  function tracing going on in the sub buffers"

* tag 'trace-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (45 commits)
  tracing: Add BUG_ON when stack end location is over written
  tracepoint: Remove unused API functions
  Revert "tracing: Move event storage for array from macro to standalone function"
  ftrace: Constify ftrace_text_reserved
  tracepoints: API doc update to tracepoint_probe_register() return value
  tracepoints: API doc update to data argument
  ftrace: Fix compilation warning about control_ops_free
  ftrace/x86: BUG when ftrace recovery fails
  ftrace: Warn on error when modifying ftrace function
  ftrace: Remove freelist from struct dyn_ftrace
  ftrace: Do not pass data to ftrace_dyn_arch_init
  ftrace: Pass retval through return in ftrace_dyn_arch_init()
  ftrace: Inline the code from ftrace_dyn_table_alloc()
  ftrace: Cleanup of global variables ftrace_new_pgs and ftrace_update_cnt
  tracing: Evaluate len expression only once in __dynamic_array macro
  tracing: Correctly expand len expressions from __dynamic_array macro
  tracing/module: Replace include of tracepoint.h with jump_label.h in module.h
  tracing: Fix event header migrate.h to include tracepoint.h
  tracing: Fix event header writeback.h to include tracepoint.h
  tracing: Warn if a tracepoint is not set via debugfs
  ...
This commit is contained in:
Linus Torvalds 2014-04-03 10:26:31 -07:00
commit 68114e5eb8
36 changed files with 739 additions and 591 deletions
Download patch file Download diff file Expand all files Collapse all files

28
include/linux/ftrace_event.h
View file

@ -163,6 +163,8 @@ void trace_current_buffer_discard_commit(struct ring_buffer *buffer,
void tracing_record_cmdline(struct task_struct *tsk);
int ftrace_output_call(struct trace_iterator *iter, char *name, char *fmt, ...);
struct event_filter;
enum trace_reg {
@ -197,6 +199,32 @@ struct ftrace_event_class {
extern int ftrace_event_reg(struct ftrace_event_call *event,
enum trace_reg type, void *data);
int ftrace_output_event(struct trace_iterator *iter, struct ftrace_event_call *event,
char *fmt, ...);
int ftrace_event_define_field(struct ftrace_event_call *call,
char *type, int len, char *item, int offset,
int field_size, int sign, int filter);
struct ftrace_event_buffer {
struct ring_buffer *buffer;
struct ring_buffer_event *event;
struct ftrace_event_file *ftrace_file;
void *entry;
unsigned long flags;
int pc;
};
void *ftrace_event_buffer_reserve(struct ftrace_event_buffer *fbuffer,
struct ftrace_event_file *ftrace_file,
unsigned long len);
void ftrace_event_buffer_commit(struct ftrace_event_buffer *fbuffer);
int ftrace_event_define_field(struct ftrace_event_call *call,
char *type, int len, char *item, int offset,
int field_size, int sign, int filter);
enum {
TRACE_EVENT_FL_FILTERED_BIT,
TRACE_EVENT_FL_CAP_ANY_BIT,