Kprobes: move kprobe examples to samples/

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=<func_name>' to determine
	execution time of func_name in nanoseconds.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/samples/Kconfig b/samples/Kconfig
index 74d97cc24787..e1fb471cc501 100644
--- a/samples/Kconfig
+++ b/samples/Kconfig
@@ -22,5 +22,16 @@ config SAMPLE_KOBJECT
 
           If in doubt, say "N" here.
 
+config SAMPLE_KPROBES
+        tristate "Build kprobes examples -- loadable modules only"
+        depends on KPROBES && m
+        help
+          This build several kprobes example modules.
+
+config SAMPLE_KRETPROBES
+        tristate "Build kretprobes example -- loadable modules only"
+        default m
+        depends on SAMPLE_KPROBES && KRETPROBES
+
 endif # SAMPLES