22 Mar, 2011
12 commits
-
Add an implementation of DMA scatter/gather allocator and handling
routines for videobuf2.For mmap operation mode it is implemented on top of
alloc_page + sg_set_page/_free_page.For userptr operation mode it is implemented on top of
get_user_pages + sg_set_page/put_page.Signed-off-by: Andrzej Pietrasiewicz
Signed-off-by: Kyungmin Park
Signed-off-by: Marek Szyprowski
CC: Pawel Osciak
Reviewed-by: Hans Verkuil
Signed-off-by: Mauro Carvalho Chehab -
Add an implementation of DMA coherent memory allocator and handling
routines for videobuf2, implemented on top of dma_alloc_coherent() call.Signed-off-by: Pawel Osciak
Signed-off-by: Kyungmin Park
Signed-off-by: Marek Szyprowski
CC: Pawel Osciak
Reviewed-by: Hans Verkuil
Signed-off-by: Mauro Carvalho Chehab -
Add an implementation of contiguous virtual memory allocator and handling
routines for videobuf2, implemented on top of vmalloc()/vfree() calls.Signed-off-by: Pawel Osciak
Signed-off-by: Kyungmin Park
Signed-off-by: Marek Szyprowski
CC: Pawel Osciak
Reviewed-by: Hans Verkuil
Signed-off-by: Mauro Carvalho Chehab -
Add generic memory handling routines for userspace pointer handling,
contiguous memory verification and mapping.Signed-off-by: Marek Szyprowski
Signed-off-by: Pawel Osciak
Signed-off-by: Kyungmin Park
CC: Pawel Osciak
Reviewed-by: Hans Verkuil
Signed-off-by: Mauro Carvalho Chehab -
Videobuf2 is a Video for Linux 2 API-compatible driver framework for
multimedia devices. It acts as an intermediate layer between userspace
applications and device drivers. It also provides low-level, modular
memory management functions for drivers.Videobuf2 eases driver development, reduces drivers' code size and aids in
proper and consistent implementation of V4L2 API in drivers.Videobuf2 memory management backend is fully modular. This allows custom
memory management routines for devices and platforms with non-standard
memory management requirements to be plugged in, without changing the
high-level buffer management functions and API.The framework provides:
- implementations of streaming I/O V4L2 ioctls and file operations
- high-level video buffer, video queue and state management functions
- video buffer memory allocation and managementSigned-off-by: Pawel Osciak
Signed-off-by: Marek Szyprowski
Signed-off-by: Kyungmin Park
CC: Pawel Osciak
Reviewed-by: Hans Verkuil
Signed-off-by: Mauro Carvalho Chehab -
Add multi-planar ioctl handling to the 32bit compatibility layer.
[mchehab@redhat.com: Merged with a fixup patch from Pawel]
Signed-off-by: Pawel Osciak
Signed-off-by: Kyungmin Park
Signed-off-by: Marek Szyprowski
Reviewed-by: Hans Verkuil
Signed-off-by: Mauro Carvalho Chehab -
Add multi-planar API core ioctl handling and conversion functions.
[mchehab@redhat.com: CondingStyle fixup]
Signed-off-by: Pawel Osciak
Signed-off-by: Kyungmin Park
Reviewed-by: Marek Szyprowski
Signed-off-by: Marek Szyprowski
Reviewed-by: Hans Verkuil
Signed-off-by: Mauro Carvalho Chehab -
Multi-planar API is as a backwards-compatible extension of the V4L2 API,
which allows video buffers to consist of one or more planes. Planes are
separate memory buffers; each has its own mapping, backed by usually
separate physical memory buffers.Many different uses for the multi-planar API are possible, examples
include:
- embedded devices requiring video components to be placed in physically
separate buffers, e.g. for Samsung S3C/S5P SoC series' video codec,
Y and interleaved Cb/Cr components reside in buffers in different
memory banks;
- applications may receive (or choose to store) video data of one video
buffer in separate memory buffers; such data would have to be temporarily
copied together into one buffer before passing it to a V4L2 device;
- applications or drivers may want to pass metadata related to a buffer and
it may not be possible to place it in the same buffer, together with video
data.[mchehab@redhat.com: CodingStyle fixes]
Signed-off-by: Pawel Osciak
Signed-off-by: Kyungmin Park
Reviewed-by: Marek Szyprowski
Signed-off-by: Marek Szyprowski
Reviewed-by: Hans Verkuil
Signed-off-by: Mauro Carvalho Chehab -
drivers/media/dvb/dvb-usb/technisat-usb2.c: In function ‘technisat_usb2_disconnect’:
drivers/media/dvb/dvb-usb/technisat-usb2.c:770: warning: ‘cancel_rearming_delayed_work’ is deprecated (declared at include/linux/workqueue.h:421)Cc: Patrick Boettcher
Signed-off-by: Mauro Carvalho Chehab -
This patch is adding support for Technisat's new USB2.0 DVB-S/S2 receiver
device. The development was sponsored by Technisat.The Green led is toggle depending on the frontend-state. The Red LED is turned
on all the time.The MAC address reading from the EEPROM along with the
LRC-method to check whether its valid.Support for the IR-receiver of the Technisat USB2 box. The keys of
small, black remote-control are built-in, repeated key behaviour are
simulated.The i2c-mutex of the dvb-usb-structure is used as a general mutex for
USB requests, as there are 3 threads racing for atomic requests
consisting of multiple usb-requests.A module option is there which disables the toggling of LEDs by the
driver on certain triggers. Useful when being used in a "dark"
environment.[mchehab@redhat.com: Fix merge conflicts with RC renaming patches]
Signed-off-by: Martin Wilks
Signed-off-by: Patrick Boettcher
Signed-off-by: Mauro Carvalho Chehab -
Some backends want to receive the full transport stream including
uncorrected packets. To have that feature this patchs add a field to
the config-structure called TEI (transport stream error indicator).Cc: Manu Abraham
Signed-off-by: Martin Wilks
Signed-off-by: Patrick Boettcher
Signed-off-by: Mauro Carvalho Chehab -
This patch STV090X adds and exports a function to control the GPIOs of
the stv090x-devices.Cc: Manu Abraham
Signed-off-by: Martin Wilks
Signed-off-by: Patrick Boettcher
Signed-off-by: Mauro Carvalho Chehab
15 Mar, 2011
28 commits
-
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-mn10300:
MN10300: atomic_read() should ensure it emits a load
MN10300: The SMP_ICACHE_INV_FLUSH_RANGE IPI command does not exist
MN10300: Proper use of macros get_user() in the case of incremented pointers -
* 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus: (26 commits)
MIPS: Alchemy: Fix reset for MTX-1 and XXS1500
MIPS: MTX-1: Make au1000_eth probe all PHY addresses
MIPS: Jz4740: Add HAVE_CLK
MIPS: Move idle task creation to work queue
MIPS, Perf-events: Use unsigned delta for right shift in event update
MIPS, Perf-events: Work with the new callchain interface
MIPS, Perf-events: Fix event check in validate_event()
MIPS, Perf-events: Work with the new PMU interface
MIPS, Perf-events: Work with irq_work
MIPS: Fix always CONFIG_LOONGSON_UART_BASE=y
MIPS: Loongson: Fix potentially wrong string handling
MIPS: Fix GCC-4.6 'set but not used' warning in arch/mips/mm/init.c
MIPS: Fix GCC-4.6 'set but not used' warning in ieee754int.h
MIPS: Remove unused code from arch/mips/kernel/syscall.c
MIPS: Fix GCC-4.6 'set but not used' warning in signal*.c
MIPS: MSP: Fix MSP71xx bpci interrupt handler return value
MIPS: Select R4K timer lib for all MSP platforms
MIPS: Loongson: Remove ad-hoc cmdline default
MIPS: Clear the correct flag in sysmips(MIPS_FIXADE, ...).
MIPS: Add an unreachable return statement to satisfy buggy GCCs.
... -
…git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: ce4100: Set pci ops via callback instead of module init
x86/mm: Fix pgd_lock deadlock
x86/mm: Handle mm_fault_error() in kernel space
x86: Don't check for BIOS corruption in first 64K when there's no need to -
This reverts the parent commit. I hate doing that, but it's generating
some discussion ("half of it is right"), and since I am planning on
doing the 2.6.38 release later today we can punt it to stable if
required. Let's not rock the boat right now.Signed-off-by: Linus Torvalds
-
oom_kill_process() starts with victim_points == 0. This means that
(most likely) any child has more points and can be killed erroneously.Also, "children has a different mm" doesn't match the reality, we should
check child->mm != t->mm. This check is not exactly correct if t->mm ==
NULL but this doesn't really matter, oom_kill_task() will kill them
anyway.Note: "Kill all processes sharing p->mm" in oom_kill_task() is wrong
too.Signed-off-by: Oleg Nesterov
Signed-off-by: Linus Torvalds -
Since commit 32fd6901 (MIPS: Alchemy: get rid of common/reset.c)
Alchemy-based boards use their own reset function. For MTX-1 and XXS1500,
the reset function pokes at the BCSR.SYSTEM_RESET register, but this does
not work. According to Bruno Randolf, this was not tested when written.Previously, the generic au1000_restart() routine called the board specific
reset function, which for MTX-1 and XXS1500 did not work, but finally made
a jump to the reset vector, which really triggers a system restart. Fix
reboot for both targets by jumping to the reset vector.Signed-off-by: Florian Fainelli
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2093/
Acked-by: Bruno Randolf
Signed-off-by: Ralf Baechle -
When au1000_eth probes the MII bus for PHY address, if we do not set
au1000_eth platform data's phy_search_highest_address, the MII probing
logic will exit early and will assume a valid PHY is found at address 0.
For MTX-1, the PHY is at address 31, and without this patch, the link
detection/speed/duplex would not work correctly.CC: stable@kernel.org
Signed-off-by: Florian Fainelli
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2111/
Signed-off-by: Ralf Baechle -
Jz4740 supports the clock framework but doesn't have HAVE_CLK defined,
so define it!Signed-off-by: Maurus Cuelenaere
To: linux-mips@linux-mips.org
To: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/2112/
Acked-by: Lars-Peter Clausen
Signed-off-by: Ralf Baechle -
To avoid forking usermode thread when creating an idle task, move fork_idle
to a work queue.If kernel starts with maxcpus= option which does not bring all available
cpus online at boot time, idle tasks for offline cpus are not created. If
later offline cpus are hotplugged through sysfs, __cpu_up is called in
the context of the user task, and fork_idle copies its non-zero mm
pointer. This causes BUG() in per_cpu_trap_init.This also avoids issues with resource limits of the CPU writing to sysfs,
containers, maybe others.Signed-off-by: Maksim Rayskiy
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2070/
Signed-off-by: Ralf Baechle -
Leverage the commit for ARM by Will Deacon:
- 446a5a8b1eb91a6990e5c8fe29f14e7a95b69132
ARM: 6205/1: perf: ensure counter delta is treated as unsignedHardware performance counters on ARM are 32-bits wide but atomic64_t
variables are used to represent counter data in the hw_perf_event structure.The armpmu_event_update function right-shifts a signed 64-bit delta variable
and adds the result to the event count. This can lead to shifting in sign-bits
if the MSB of the 32-bit counter value is set. This results in perf output
such as:Performance counter stats for 'sleep 20':
18446744073460670464 cycles
Acked-by: David Daney
Signed-off-by: Deng-Cheng Zhu
To: a.p.zijlstra@chello.nl
To: fweisbec@gmail.com
To: will.deacon@arm.com
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: wuzhangjin@gmail.com
Cc: paulus@samba.org
Cc: mingo@elte.hu
Cc: acme@redhat.com
Cc: matt@console-pimps.org
Cc: sshtylyov@mvista.com
Patchwork: http://patchwork.linux-mips.org/patch/2015/
Signed-off-by: Ralf Baechle -
This is the MIPS part of the following commits by Frederic Weisbecker:
- f72c1a931e311bb7780fee19e41a89ac42cab50e
perf: Factorize callchain context handlingStore the kernel and user contexts from the generic layer instead
of archs, this gathers some repetitive code.- 56962b4449af34070bb1994621ef4f0265eed4d8
perf: Generalize some arch callchain code- Most archs use one callchain buffer per cpu, except x86 that needs
to deal with NMIs. Provide a default perf_callchain_buffer()
implementation that x86 overrides.- Centralize all the kernel/user regs handling and invoke new arch
handlers from there: perf_callchain_user() / perf_callchain_kernel()
That avoid all the user_mode(), current->mm checks and so...- Invert some parameters in perf_callchain_*() helpers: entry to the
left, regs to the right, following the traditional (dst, src).- 70791ce9ba68a5921c9905ef05d23f62a90bc10c
perf: Generalize callchain_store()callchain_store() is the same on every archs, inline it in
perf_event.h and rename it to perf_callchain_store() to avoid
any collision.This removes repetitive code.
- c1a65932fd7216fdc9a0db8bbffe1d47842f862c
perf: Drop unappropriate tests on arch callchainsDrop the TASK_RUNNING test on user tasks for callchains as
this check doesn't seem to make any sense.Also remove the tests for !current that is not supposed to
happen and current->pid as this should be handled at the
generic level, with exclude_idle attribute.Reported-by: Wu Zhangjin
Acked-by: Frederic Weisbecker
Acked-by: David Daney
Signed-off-by: Deng-Cheng Zhu
To: a.p.zijlstra@chello.nl
To: will.deacon@arm.com
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: paulus@samba.org
Cc: mingo@elte.hu
Cc: acme@redhat.com
Cc: dengcheng.zhu@gmail.com
Cc: matt@console-pimps.org
Cc: sshtylyov@mvista.com
Patchwork: http://patchwork.linux-mips.org/patch/2014/
Signed-off-by: Ralf Baechle -
Ignore events that are in off/error state or belong to a different PMU.
This patch originates from the following commit for ARM by Will Deacon:
- 65b4711ff513767341aa1915c822de6ec0de65cb
ARM: 6352/1: perf: fix event validationThe validate_event function in the ARM perf events backend has the
following problems:1.) Events that are disabled count towards the cost.
2.) Events associated with other PMUs [for example, software events or
breakpoints] do not count towards the cost, but do fail validation,
causing the group to fail.This patch changes validate_event so that it ignores events in the
PERF_EVENT_STATE_OFF state or that are scheduled for other PMUs.Acked-by: Will Deacon
Acked-by: David Daney
Signed-off-by: Deng-Cheng Zhu
To: a.p.zijlstra@chello.nl
To: fweisbec@gmail.com
To: will.deacon@arm.com
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: wuzhangjin@gmail.com
Cc: paulus@samba.org
Cc: mingo@elte.hu
Cc: acme@redhat.com
Cc: dengcheng.zhu@gmail.com
Cc: matt@console-pimps.org
Cc: sshtylyov@mvista.com
Cc: ddaney@caviumnetworks.com
Patchwork: http://patchwork.linux-mips.org/patch/2013/
Signed-off-by: Ralf Baechle -
This is the MIPS part of the following commits by Peter Zijlstra:
- a4eaf7f14675cb512d69f0c928055e73d0c6d252
perf: Rework the PMU methodsReplace pmu::{enable,disable,start,stop,unthrottle} with
pmu::{add,del,start,stop}, all of which take a flags argument.The new interface extends the capability to stop a counter while
keeping it scheduled on the PMU. We replace the throttled state with
the generic stopped state.This also allows us to efficiently stop/start counters over certain
code paths (like IRQ handlers).It also allows scheduling a counter without it starting, allowing for
a generic frozen state (useful for rotating stopped counters).The stopped state is implemented in two different ways, depending on
how the architecture implemented the throttled state:1) We disable the counter:
a) the pmu has per-counter enable bits, we flip that
b) we program a NOP event, preserving the counter state2) We store the counter state and ignore all read/overflow events
For MIPSXX, the stopped state is implemented in the way of 1.b as above.
- 33696fc0d141bbbcb12f75b69608ea83282e3117
perf: Per PMU disableChanges perf_disable() into perf_pmu_disable().
- 24cd7f54a0d47e1d5b3de29e2456bfbd2d8447b7
perf: Reduce perf_disable() usageSince the current perf_disable() usage is only an optimization,
remove it for now. This eases the removal of the __weak
hw_perf_enable() interface.- b0a873ebbf87bf38bf70b5e39a7cadc96099fa13
perf: Register PMU implementationsSimple registration interface for struct pmu, this provides the
infrastructure for removing all the weak functions.- 51b0fe39549a04858001922919ab355dee9bdfcf
perf: Deconstify struct pmused -ie 's/const struct pmu\>/struct pmu/g' `git grep -l "const struct pmu\>"`
Reported-by: Wu Zhangjin
Acked-by: David Daney
Signed-off-by: Deng-Cheng Zhu
To: a.p.zijlstra@chello.nl
To: fweisbec@gmail.com
To: will.deacon@arm.com
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: wuzhangjin@gmail.com
Cc: paulus@samba.org
Cc: mingo@elte.hu
Cc: acme@redhat.com
Cc: dengcheng.zhu@gmail.com
Cc: matt@console-pimps.org
Cc: sshtylyov@mvista.com
Cc: ddaney@caviumnetworks.com
Patchwork: http://patchwork.linux-mips.org/patch/2012/
Signed-off-by: Ralf Baechle -
This is the MIPS part of the following commit by Peter Zijlstra:
- e360adbe29241a0194e10e20595360dd7b98a2b3
irq_work: Add generic hardirq context callbacksProvide a mechanism that allows running code in IRQ context. It is
most useful for NMI code that needs to interact with the rest of the
system -- like wakeup a task to drain buffers.Perf currently has such a mechanism, so extract that and provide it as
a generic feature, independent of perf so that others may also
benefit.The IRQ context callback is generated through self-IPIs where
possible, or on architectures like powerpc the decrementer (the
built-in timer facility) is set to generate an interrupt immediately.Architectures that don't have anything like this get to do with a
callback from the timer tick. These architectures can call
irq_work_run() at the tail of any IRQ handlers that might enqueue such
work (like the perf IRQ handler) to avoid undue latencies in
processing the work.For MIPSXX, we need to call irq_work_run() at the tail of the perf IRQ
handler as described above.Reported-by: Wu Zhangjin
Acked-by: Peter Zijlstra
Acked-by: David Daney
Signed-off-by: Deng-Cheng Zhu
To: fweisbec@gmail.com
To: will.deacon@arm.com
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: paulus@samba.org
Cc: mingo@elte.hu
Cc: acme@redhat.com
Cc: matt@console-pimps.org
Cc: sshtylyov@mvista.com,
Patchwork: http://patchwork.linux-mips.org/patch/2011/
Signed-off-by: Ralf Baechle -
Signed-off-by: Yoichi Yuasa
Cc: linux-mips
Patchwork: https://patchwork.linux-mips.org/patch/2055/
Signed-off-by: Ralf Baechle -
This error was reported by cppcheck:
arch/mips/loongson/common/machtype.c:56: error: Dangerous usage of 'str' (strncpy doesn't always 0-terminate it)If strncpy copied MACHTYPE_LEN bytes, the destination string str
was not terminated.The patch adds one more byte to str and makes sure that this byte is
always 0.Signed-off-by: Stefan Weil
Cc: Wu Zhangjin
Cc: Arnaud Patard
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/2053/
Signed-off-by: Ralf Baechle -
Under some combinations of CONFIG_*, lastpfn in page_is_ram is 'set
but not used'. Mark it as __maybe_unused to quiet the warning/error.Signed-off-by: David Daney
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2033/
Signed-off-by: Ralf Baechle -
GCC-4.6 can find more unused code than previous versions could.
In the case of arch/mips/math-emu/ieee754int.h, the COMPXSP and
COMPXDP macros are used in several places, but a couple of them leave
xs unused. The easiest thing to do is mark it as __maybe_unused to
quiet the warning.Signed-off-by: David Daney
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2032/
Signed-off-by: Ralf Baechle -
The variable arg3 in _sys_sysmips() is unused. Remove it.
Signed-off-by: David Daney
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2034/
Signed-off-by: Ralf Baechle -
GCC-4.6 can find more unused code than previous versions could.
In the case of protected_restore_fp_context{,32}, the variable tmp is
really used. Its use is tricky in that we really care about the side
effects of the __put_user() calls. So we must mark tmp with
__maybe_unused to quiet the warning.Signed-off-by: David Daney
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2035/
Signed-off-by: Ralf Baechle -
Signed-off-by: Anoop P A
To: Ben Hutchings
To: linux-mips@linux-mips.org
To: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1804/
Signed-off-by: Ralf Baechle -
Signed-off-by: Anoop P A
To: linux-mips@linux-mips.org
To: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1803/
Tested-by: Shane McDonald
Signed-off-by: Ralf Baechle -
Loongson builds have an ad-hoc cmdline default of "console=ttyS0,115200
root=/dev/hda1". These settings come from a vendor; I remember builds
from Lemote branch requiring a "console=tty" override in order to get a
working console.At least on Yeeloong, they're particularly useless: there's no external
serial port, and the IDE drive is now recognised as /dev/sda.Signed-off-by: Robert Millan
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1759/
Signed-off-by: Ralf Baechle -
The sysmips(MIPS_FIXADE, ...) case contains an obvious copy-and-paste
error in the handling of the TIF_LOGADE flag. Fix thatPatchwork: https://patchwork.linux-mips.org/patch/1997/
Signed-off-by: Ralf Baechle -
It was reported that GCC-4.3.3 (with CodeSourcery extensions) fails
without this.Reported-by: Jonas Gorski
Signed-off-by: David Daney
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2010/
Signed-off-by: Ralf Baechle -
trace.func should be set to the recorded ip of the mcount calling site
in the __mcount_loc section to filter the function entries configured
through the tracing/set_graph_function interface, but before, this is
set to the self_ra(the return address of mcount), which has made
set_graph_function not work as expected.This fixes it via calculating the right recorded ip in the __mcount_loc
section and assign it to trace.func.Reported-by: Zhiping Zhong
Signed-off-by: Wu Zhangjin
Cc: Steven Rostedt
Cc: Sergei Shtylyov
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2017/
Signed-off-by: Ralf Baechle -
This moves the comments out of ftrace_make_nop() and cleans it. At the
same time, a macro MCOUNT_OFFSET_INSNS is defined for sharing with the
next patch.Signed-off-by: Wu Zhangjin
Cc: Steven Rostedt
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2008/
Signed-off-by: Ralf Baechle
