linux-toradex.git/kernel/trace/trace_kprobe.c, branch v3.10.2

tracing/kprobes: Make print_*probe_event static

2013-05-15T17:50:24+00:00

According to sparse warning, print_*probe_event static because
those functions are not directly called from outside.

Link: http://lkml.kernel.org/r/20130513115839.6545.83067.stgit@mhiramat-M0-7522

Cc: Srikar Dronamraju 
Cc: Oleg Nesterov 
Cc: Tom Zanussi 
Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Signed-off-by: Masami Hiramatsu 
Signed-off-by: Steven Rostedt

tracing/kprobes: Fix a sparse warning for incorrect type in assignment

2013-05-15T17:50:23+00:00

Fix a sparse warning about the rcu operated pointer is
defined without __rcu address space.

Link: http://lkml.kernel.org/r/20130513115837.6545.23322.stgit@mhiramat-M0-7522

Cc: Srikar Dronamraju 
Cc: Oleg Nesterov 
Cc: Tom Zanussi 
Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Signed-off-by: Masami Hiramatsu 
Signed-off-by: Steven Rostedt

tracing/kprobes: Use rcu_dereference_raw for tp->files

2013-05-15T17:50:22+00:00

Use rcu_dereference_raw() for accessing tp->files. Because the
write-side uses rcu_assign_pointer() for memory barrier,
the read-side also has to use rcu_dereference_raw() with
read memory barrier.

Link: http://lkml.kernel.org/r/20130513115834.6545.17022.stgit@mhiramat-M0-7522

Cc: Srikar Dronamraju 
Cc: Oleg Nesterov 
Cc: Tom Zanussi 
Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Signed-off-by: Masami Hiramatsu 
Signed-off-by: Steven Rostedt

tracing/kprobes: Support soft-mode disabling

2013-05-10T00:22:16+00:00

Support soft-mode disabling on kprobe-based dynamic events.
Soft-disabling is just ignoring recording if the soft disabled
flag is set.

Link: http://lkml.kernel.org/r/20130509054454.30398.7237.stgit@mhiramat-M0-7522

Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Tom Zanussi 
Cc: Oleg Nesterov 
Cc: Srikar Dronamraju 
Signed-off-by: Masami Hiramatsu 
Signed-off-by: Steven Rostedt

tracing/kprobes: Support ftrace_event_file base multibuffer

2013-05-10T00:21:47+00:00

Support multi-buffer on kprobe-based dynamic events by
using ftrace_event_file.

Link: http://lkml.kernel.org/r/20130509054449.30398.88343.stgit@mhiramat-M0-7522

Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Tom Zanussi 
Cc: Oleg Nesterov 
Cc: Srikar Dronamraju 
Signed-off-by: Masami Hiramatsu 
Signed-off-by: Steven Rostedt

tracing/kprobes: Pass trace_probe directly from dispatcher

2013-05-10T00:19:48+00:00

Pass the pointer of struct trace_probe directly from probe
dispatcher to handlers. This removes redundant container_of
macro uses. Same thing has already done in trace_uprobe.

Link: http://lkml.kernel.org/r/20130509054441.30398.69112.stgit@mhiramat-M0-7522

Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Tom Zanussi 
Cc: Oleg Nesterov 
Cc: Srikar Dronamraju 
Signed-off-by: Masami Hiramatsu 
Signed-off-by: Steven Rostedt

tracing/kprobes: Increment probe hit-count even if it is used by perf

2013-05-10T00:18:44+00:00

Increment probe hit-count for profiling even if it is used
by perf tool. Same thing has already done in trace_uprobe.

Link: http://lkml.kernel.org/r/20130509054436.30398.21133.stgit@mhiramat-M0-7522

Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Tom Zanussi 
Cc: Oleg Nesterov 
Cc: Srikar Dronamraju 
Signed-off-by: Masami Hiramatsu 
Signed-off-by: Steven Rostedt

tracing/kprobes: Use bool for retprobe checker

2013-05-10T00:17:35+00:00

Use bool instead of int for kretprobe checker.

Link: http://lkml.kernel.org/r/20130509054431.30398.38561.stgit@mhiramat-M0-7522

Cc: Srikar Dronamraju 
Cc: Oleg Nesterov 
Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Tom Zanussi 
Signed-off-by: Masami Hiramatsu 
Signed-off-by: Steven Rostedt

tracing/kprobes: Fix to increment return event probe hit-count

2013-05-10T00:13:51+00:00

Fix to increment probe hit-count for function return event.

Link: http://lkml.kernel.org/r/20130509054424.30398.34058.stgit@mhiramat-M0-7522

Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Tom Zanussi 
Cc: Oleg Nesterov 
Cc: Srikar Dronamraju 
Signed-off-by: Masami Hiramatsu 
Signed-off-by: Steven Rostedt

tracing: Use irq_work for wake ups and remove _nowake_() functions

2012-11-02T14:21:52+00:00

Have the ring buffer commit function use the irq_work infrastructure to
wake up any waiters waiting on the ring buffer for new data. The irq_work
was created for such a purpose, where doing the actual wake up at the
time of adding data is too dangerous, as an event or function trace may
be in the midst of the work queue locks and cause deadlocks. The irq_work
will either delay the action to the next timer interrupt, or trigger an IPI
to itself forcing an interrupt to do the work (in a safe location).

With irq_work, all ring buffer commits can safely do wakeups, removing
the need for the ring buffer commit "nowake" variants, which were used
by events and function tracing. All commits can now safely use the
normal commit, and the "nowake" variants can be removed.

Cc: Peter Zijlstra 
Signed-off-by: Steven Rostedt