linux-toradex.git/Documentation/kprobes.txt, branch v2.6.32.53

debugfs: Fix terminology inconsistency of dir name to mount debugfs filesystem.

2009-06-16T04:30:28+00:00

Many developers use "/debug/" or "/debugfs/" or "/sys/kernel/debug/"
directory name to mount debugfs filesystem for ftrace according to
./Documentation/tracers/ftrace.txt file.

And, three directory names(ex:/debug/, /debugfs/, /sys/kernel/debug/) is
existed in kernel source like ftrace, DRM, Wireless, Documentation,
Network[sky2]files to mount debugfs filesystem.

debugfs means debug filesystem for debugging easy to use by greg kroah
hartman. "/sys/kernel/debug/" name is suitable as directory name
of debugfs filesystem.
- debugfs related reference: http://lwn.net/Articles/334546/

Fix inconsistency of directory name to mount debugfs filesystem.

* From Steven Rostedt
  - find_debugfs() and tracing_files() in this patch.

Signed-off-by: GeunSik Lim 
Acked-by     : Inaky Perez-Gonzalez 
Reviewed-by  : Steven Rostedt 
Reviewed-by  : James Smart 
CC: Jiri Kosina 
CC: David Airlie 
CC: Peter Osterlund 
CC: Ananth N Mavinakayanahalli 
CC: Anil S Keshavamurthy 
CC: Masami Hiramatsu 
Signed-off-by: Greg Kroah-Hartman

kprobes: support kretprobe and jprobe per-probe disabling

2009-04-07T15:31:08+00:00

Add disable/enable_kretprobe() and disable/enable_jprobe().

Signed-off-by: Masami Hiramatsu 
Acked-by: Ananth N Mavinakayanahalli 
Cc: Anil S Keshavamurthy 
Cc: David S. Miller 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

kprobes: support per-kprobe disabling

2009-04-07T15:31:08+00:00

Add disable_kprobe() and enable_kprobe() to disable/enable kprobes
temporarily.

disable_kprobe() asynchronously disables probe handlers of specified
kprobe.  So, after calling it, some handlers can be called at a while.
enable_kprobe() enables specified kprobe.

aggr_pre_handler and aggr_post_handler check disabled probes.  On the
other hand aggr_break_handler and aggr_fault_handler don't check it
because these handlers will be called while executing pre or post handlers
and usually those help error handling.

Signed-off-by: Masami Hiramatsu 
Acked-by: Ananth N Mavinakayanahalli 
Cc: Anil S Keshavamurthy 
Cc: David S. Miller 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

kprobes: support probing module __exit function

2009-01-06T23:59:21+00:00

Allows kprobes to probe __exit routine.  This adds flags member to struct
kprobe.  When module is freed(kprobes hooks module_notifier to get this
event), kprobes which probe the functions in that module are set to "Gone"
flag to the flags member.  These "Gone" probes are never be enabled.
Users can check the GONE flag through debugfs.

This also removes mod_refcounted, because we couldn't free a module if
kprobe incremented the refcount of that module.

[akpm@linux-foundation.org: document some locking]
[mhiramat@redhat.com: bugfix: pass aggr_kprobe to arch_remove_kprobe]
[mhiramat@redhat.com: bugfix: release old_p's insn_slot before error return]
Signed-off-by: Masami Hiramatsu 
Acked-by: Ananth N Mavinakayanahalli 
Cc: Anil S Keshavamurthy 
Signed-off-by: Masami Hiramatsu 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

powerpc/booke: Add kprobes support for booke style processors

2008-06-26T08:35:46+00:00

This patch is based on work done by Madhvesh. R. Sulibhavi back in
March 2007.

We refactor some of the single step handling since it differs between
"classic" and "booke" powerpc cores.

Signed-off-by: Kumar Gala

kprobes: update document about batch registration

2008-04-28T15:58:32+00:00

Add the description of batch registration interfaces to
Documentation/kprobes.txt.

Signed-off-by: Masami Hiramatsu 
Cc: Ananth N Mavinakayanahalli 
Cc: Jim Keniston 
Cc: Prasanna S Panchamukhi 
Cc: Shaohua Li 
Cc: David Miller 
Cc: "Frank Ch. Eigler" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Kprobes: move kprobe examples to samples/

2008-03-05T00:35:11+00:00

Move kprobes examples from Documentation/kprobes.txt to under samples/.
Patch originally by Randy Dunlap.

o Updated the patch to apply on 2.6.25-rc3
o Modified examples code to build on multiple architectures. Currently,
  the kprobe and jprobe examples code works for x86 and powerpc
o Cleaned up unneeded #includes
o Cleaned up Kconfig per Sam Ravnborg's suggestions to fix build break
  on archs that don't have kretprobes
o Implemented suggestions by Mathieu Desnoyers on CONFIG_KRETPROBES
o Included Andrew Morton's cleanup based on x86-git
o Modified kretprobe_example to act as a arch-agnostic module to
  determine routine execution times:
	Use 'modprobe kretprobe_example func=' to determine
	execution time of func_name in nanoseconds.

Signed-off-by: Randy Dunlap 
Signed-off-by: Ananth N Mavinakayanahalli 
Acked-by: Mathieu Desnoyers 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

remove final fastcall users

2008-02-14T00:21:18+00:00

fastcall always expands to empty, remove it.

Signed-off-by: Harvey Harrison 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

kprobes: kretprobe user entry-handler

2008-02-06T18:41:11+00:00

Provide support to add an optional user defined callback to be run at
function entry of a kretprobe'd function.  Also modify the kprobe smoke
tests to include an entry-handler during the kretprobe sanity test.

Signed-off-by: Abhishek Sagar 
Cc: Prasanna S Panchamukhi 
Cc: Ananth N Mavinakayanahalli 
Cc: Anil S Keshavamurthy 
Acked-by: Jim Keniston 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ARM kprobes: let's enable it

2008-01-26T15:25:17+00:00

Signed-off-by: Nicolas Pitre