linux/samples, branch v3.4.9

samples/rpmsg: add an rpmsg driver sample

2012-02-08T20:54:05Z

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 . Signed-off-by: Ohad Ben-Cohen Cc: Brian Swetland Cc: Arnd Bergmann Cc: Grant Likely Cc: Tony Lindgren Cc: Russell King Cc: Rusty Russell Cc: Andrew Morton Cc: Greg KH Cc: Stephen Boyd

samples: drop unused Kconfig symbol

2011-10-31T22:39:52Z

Signed-off-by: Paul Bolle Signed-off-by: Michal Marek

perf: Add context field to perf_event

2011-07-01T09:06:38Z

The perf_event overflow handler does not receive any caller-derived argument, so many callers need to resort to looking up the perf_event in their local data structure. This is ugly and doesn't scale if a single callback services many perf_events. Fix by adding a context parameter to perf_event_create_kernel_counter() (and derived hardware breakpoints APIs) and storing it in the perf_event. The field can be accessed from the callback as event->overflow_handler_context. All callers are updated. Signed-off-by: Avi Kivity Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/1309362157-6596-2-git-send-email-avi@redhat.com Signed-off-by: Ingo Molnar

perf: Remove the nmi parameter from the swevent and overflow interface

2011-07-01T09:06:35Z

The nmi parameter indicated if we could do wakeups from the current context, if not, we would set some state and self-IPI and let the resulting interrupt do the wakeup. For the various event classes: - hardware: nmi=0; PMI is in fact an NMI or we run irq_work_run from the PMI-tail (ARM etc.) - tracepoint: nmi=0; since tracepoint could be from NMI context. - software: nmi=[0,1]; some, like the schedule thing cannot perform wakeups, and hence need 0. As one can see, there is very little nmi=1 usage, and the down-side of not using it is that on some platforms some software events can have a jiffy delay in wakeup (when arch_irq_work_raise isn't implemented). The up-side however is that we can remove the nmi parameter and save a bunch of conditionals in fast paths. Signed-off-by: Peter Zijlstra Cc: Michael Cree Cc: Will Deacon Cc: Deng-Cheng Zhu Cc: Anton Blanchard Cc: Eric B Munson Cc: Heiko Carstens Cc: Paul Mundt Cc: David S. Miller Cc: Frederic Weisbecker Cc: Jason Wessel Cc: Don Zickus Link: http://lkml.kernel.org/n/tip-agjev8eu666tvknpb3iaj0fg@git.kernel.org Signed-off-by: Ingo Molnar

Merge branches 'doc', 'multitouch', 'upstream' and 'upstream-fixes' into for-linus

2011-05-23T10:49:25Z

HID: hid-example: fix some build issues

2011-04-21T09:10:42Z

samples/hid-example.o needs some Kconfig and Makefile additions in order to build. It should use 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 Cc: Alan Ott Cc: Jiri Kosina Signed-off-by: Andrew Morton Signed-off-by: Jiri Kosina

HID: hidraw: fix samples miscompilation

2011-04-08T23:43:18Z

On systems where userspace doesn't have new hidraw.h populated to /usr/include, the hidraw sample won't compile as it's missing the new ioctl defitions. Introduce temporary ugly workaround to define the ioctls "manually" in such cases, just to avoid miscompilation in allmodconfig cases. Reported-by: Stephen Rothwell Signed-off-by: Jiri Kosina

Fix common misspellings

2011-03-31T14:26:23Z

Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi

HID: Documentation for hidraw

2011-03-22T10:43:50Z

Documenation for the hidraw driver, with sample program. Signed-off-by: Alan Ott Signed-off-by: Jiri Kosina

kdb: Add kdb kernel module sample

2010-10-29T18:14:39Z

Add an example of how to add a dynamic kdb shell command via a kernel module. Signed-off-by: Jason Wessel