The tracepoint sample code was used to teach developers how to
create their own tracepoints. But now the trace_events have been
added as a higher level that is used directly by developers today.
Only the trace_event code should use the tracepoint interface
directly and no new tracepoints should be added.
Besides, the example had a race condition with the use of the
->d_name.name dentry field, as pointed out by Al Viro.
Best just to remove the code so it wont be used by other developers.
Link: http://lkml.kernel.org/r/[email protected]
Cc: Al Viro <[email protected]>
Acked-by: Mathieu Desnoyers <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]>
Add an rpmsg driver sample, which demonstrates how to communicate with
an AMP-configured remote processor over the rpmsg bus.
Note how once probed, the driver can immediately start sending messages
using the rpmsg_send() API, without having to worry about creating endpoints
or allocating rpmsg addresses: all that work is done by the rpmsg bus,
and the required information is already embedded in the rpmsg channel
that the driver is probed with.
In this sample, the driver simply sends a "Hello World!" message to the remote
processor repeatedly.
Designed with Brian Swetland <[email protected]>.
Signed-off-by: Ohad Ben-Cohen <[email protected]>
Cc: Brian Swetland <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Grant Likely <[email protected]>
Cc: Tony Lindgren <[email protected]>
Cc: Russell King <[email protected]>
Cc: Rusty Russell <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Greg KH <[email protected]>
Cc: Stephen Boyd <[email protected]>
samples/hid-example.o needs some Kconfig and Makefile additions in order
to build. It should use <linux/*.h> headers from the build tree, so use
HEADERS_CHECK to require that those header files be present.
Change the kconfig symbol from tristate to bool since userspace cannot be
built as loadable modules.
However, I don't understand why the userspace header files are not present
as reported in Andrew's build log, since it builds OK on x86_64 without
any of these changes.
Signed-off-by: Randy Dunlap <[email protected]>
Cc: Alan Ott <[email protected]>
Cc: Jiri Kosina <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
Add four examples to the kernel sample directory.
It shows how to handle:
- a byte stream fifo
- a integer type fifo
- a dynamic record sized fifo
- the fifo DMA functions
[[email protected]: coding-style fixes]
Signed-off-by: Stefani Seibold <[email protected]>
Cc: Greg KH <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Conflicts:
kernel/Makefile
kernel/trace/Makefile
kernel/trace/trace.h
samples/Makefile
Merge reason: We need to be uptodate with the perf events development
branch because we plan to rewrite the breakpoints API on top of
perf events.
With SAMPLE_KOBJECT=y, it isn't even linked into the kernel image.
Signed-off-by: Michal Marek <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This patch introduces a sample kernel module to demonstrate the use of Hardware
Breakpoint feature. It places a breakpoint over the kernel variable 'pid_max'
to monitor all write operations and emits a function-backtrace when done.
Signed-off-by: K.Prasad <[email protected]>
Signed-off-by: Frederic Weisbecker <[email protected]>
Normally a config should be default to n. This patch also makes the
sample module-only, like SAMPLE_MARKERS and SAMPLE_TRACEPOINTS.
[ Impact: don't build trace event sample by default ]
Signed-off-by: Li Zefan <[email protected]>
Acked-by: Steven Rostedt <[email protected]>
Acked-by: Frederic Weisbecker <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
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 <[email protected]>
Signed-off-by: Ananth N Mavinakayanahalli <[email protected]>
Acked-by: Mathieu Desnoyers <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This is a simple kobject module, showing how to use kobj_attributes in
basic and more complex ways.
Cc: Kay Sievers <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Begin infrastructure for kernel code samples in the samples/ directory.
Add its Kconfig and Kbuild files.
Source its Kconfig file in all arch/ Kconfigs.
Signed-off-by: Randy Dunlap <[email protected]>
Signed-off-by: Mathieu Desnoyers <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Steven Rostedt