linux-toradex.git/Documentation/trace, branch colibri

tracedump: Dump ftrace ring buffer data

2011-12-22T05:59:19+00:00

Add a new module that will dump the contents of the ftrace ring buffer.
Data is compressed and can be in ascii or binary form. Data will
automatically dump on kernel panic to console. Data can be dumped by
reading /proc/tracedump. See tracedump.h for details.

Change-Id: I7b7afc3def0b88629dd120d17e43858306a8f357
Signed-off-by: Liang Cheng 
Reviewed-on: http://git-master/r/69494
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Dan Willemsen

tracelevel module: Prioritize trace events

2011-12-01T05:48:21+00:00

This module lets subsystem authors prioritize ftrace events
by calling tracelevel_register(...). High priority traces
will be automatically enabled on boot. See tracelevel.h
for more details

Original-Change-Id: If03699e96c598bdcf93b9a9f73918ce7b0c750cb
Reviewed-on: http://git-master/r/40290
Reviewed-by: Alon Farchy 
Tested-by: Alon Farchy 
Reviewed-by: Daniel Willemsen 
Tested-by: Daniel Solomon 
Tested-by: Simone Willett 

Rebase-Id: R49f59f81d61907f66fdf892130a1b4dc6575d40e

tracing/kprobes: Support module init function probing

2011-07-15T19:17:14+00:00

To support probing module init functions, kprobe-tracer allows
user to define a probe on non-existed function when it is given
with a module name. This also enables user to set a probe on
a function on a specific module, even if a same name (but different)
function is locally defined in another module.

The module name must be in the front of function name and separated
by a ':'. e.g. btrfs:btrfs_init_sysfs

Signed-off-by: Masami Hiramatsu 
Cc: Ingo Molnar 
Cc: Peter Zijlstra 
Cc: Frederic Weisbecker 
Cc: Arnaldo Carvalho de Melo 
Link: http://lkml.kernel.org/r/20110627072656.6528.89970.stgit@fedora15
Signed-off-by: Steven Rostedt

sched: Get rid of lock_depth

2011-04-24T11:18:38+00:00

Neil Brown pointed out that lock_depth somehow escaped the BKL
removal work.  Let's get rid of it now.

Note that the perf scripting utilities still have a bunch of
code for dealing with common_lock_depth in tracepoints; I have
left that in place in case anybody wants to use that code with
older kernels.

Suggested-by: Neil Brown 
Signed-off-by: Jonathan Corbet 
Cc: Arnd Bergmann 
Cc: Peter Zijlstra 
Cc: Thomas Gleixner 
Cc: Linus Torvalds 
Cc: Andrew Morton 
Link: http://lkml.kernel.org/r/20110422111910.456c0e84@bike.lwn.net
Signed-off-by: Ingo Molnar

Fix common misspellings

2011-03-31T14:26:23+00:00

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi

tracing: Add an 'overwrite' trace_option.

2011-03-09T18:52:27+00:00

Add an "overwrite" trace_option for ftrace to control whether the buffer should
be overwritten on overflow or not. The default remains to overwrite old events
when the buffer is full. This patch adds the option to instead discard newest
events when the buffer is full. This is useful to get a snapshot of traces just
after enabling traces. Dropping the current event is also a simpler code path.

Signed-off-by: David Sharp 
LKML-Reference: <1291844807-15481-1-git-send-email-dhsharp@google.com>
Signed-off-by: Steven Rostedt

Merge branch 'tip/perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/core

2011-02-17T13:11:15+00:00

tracing: Deprecate tracing_enabled for tracing_on

2011-02-08T22:14:58+00:00

tracing_enabled should not be used, it is heavy weight and does not
do much in helping lower the overhead.

tracing_on should be used instead. Warn users to use tracing_on
when tracing_enabled is used as it will soon be removed from the
tracing directory.

Signed-off-by: Steven Rostedt

tracing: Remove obsolete sched_switch tracer

2011-02-08T22:14:56+00:00

The trace events sched_switch and sched_wakeup do the same thing
as the stand alone sched_switch tracer does. It is no longer needed.

Signed-off-by: Steven Rostedt

tracing/syscalls: Allow arch specific syscall symbol matching

2011-02-08T02:29:03+00:00

Some architectures have unusual symbol names and the generic code to
match the symbol name with the function name for the syscall metadata
will fail. For example, symbols on PPC64 start with a period and the
generic code will fail to match them.

This patch moves the match logic out into a separate function which an
arch can override by defining ARCH_HAS_SYSCALL_MATCH_SYM_NAME in
asm/ftrace.h and implementing arch_syscall_match_sym_name.

Signed-off-by: Ian Munsie 
LKML-Reference: <1296703645-18718-5-git-send-email-imunsie@au1.ibm.com>
Signed-off-by: Steven Rostedt