Add ID for NOON010PC30 camera chip and reserve ID range for
Siliconfile sensors.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
When is called fimc_stop_capture, it seems that wait_event_timeout
used improperly. It should be wake up by irq handler.
Reviewed-by Jonghun Han <jonghun.han@samsung.com>
Signed-off-by: Sungchun Kang <sungchun.kang@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This patch fixes the value of FIFO_CTRL in MSCTRL.
Main-scaler has the value to specify a basis FIFO control of input DMA.
The description of FIFO_CTRL has been changed as below.
0 = FIFO Empty (Next burst transaction is possible when FIFO is empty)
1 = FIFO Full (Next burst transaction is possible except Full FIFO)
Value '1' is recommended to enhance the FIMC operation performance.
Reviewed-by: Jonghun Han <jonghun.han@samsung.com>
Signed-off-by: Hyunwoong Kim <khw0178.kim@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This patch adds callback functions, stop_streaming and job_abort,
to abort or finish any DMA in progress. stop_streaming is called
by videobuf2 framework and job_abort is called by m2m framework.
ST_M2M_PEND state is added to discard the next job.
Reviewed-by: Jonghun Han <jonghun.han@samsung.com>
Signed-off-by: Hyunwoong Kim <khw0178.kim@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Horizontal and vertical scaling range are according to the following equations.
If (SRC_Width >= 64 x DST_Width) { Exit(-1); /* Out of Horizontal scale range}
If (SRC_Height >= 64 x DST_Height) { Exit(-1); /* Out of Vertical scale range}
fimc_check_scaler_ratio() is used to check if horizontal and vertical
scale range are valid or not. To use fimc_check_scaler_ratio,
source and destination format should be set by VIDIOC_S_FMT.
And in case of scaling up, it doesn't have to check the scale range.
Reviewed-by: Jonghun Han <jonghun.han@samsung.com>
Signed-off-by: Hyunwoong Kim <khw0178.kim@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The main scaler has four SFRs for main scaler ratio depending on FIMC version.
FIMC 4.x has only two SFRs and FIMC 5.x has four SFRs for main scaler.
Those are MainHorRatio, MainHorRatio_ext, MainVerRatio and MainverRatio_ext.
The FIMC 5.x has 15 bit resolution for scaling ratio as below.
{MainHorRatio,MainHorRatio_ext} = {[14:6],[5:0]}.
{MainVerRatio,MainVerRatio_ext} = {[14:6],[5:0]}.
MainHorRatio = CISCCTRL[24:16], MainHorRatio_ext = CIEXTEN[15:10]
MainVerRatio = CISCCTRL[8:0], MainVerRatio_ext = CIEXTEN[5:0]
This patch supports FIMC 4.x and FIMC 5.x using platform_device_id::driver_data.
Reviewed-by: Jonghun Han <jonghun.han@samsung.com>
Signed-off-by: Hyunwoong Kim <khw0178.kim@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Some color formats are mismatched in s5p-fimc driver.
CIOCTRL[1:0], order422_out, should be set 2b'00 not 2b'11
to use V4L2_PIX_FMT_YUYV. Because in V4L2 standard V4L2_PIX_FMT_YUYV means
"start + 0: Y'00 Cb00 Y'01 Cr00 Y'02 Cb01 Y'03 Cr01". According to datasheet
2b'00 is right value for V4L2_PIX_FMT_YUYV.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Manage the camera sensor clock in the host driver rather than
leaving this task for sensor drivers. The clock frequency
must be passed in the sensor's and host driver's platform data.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Map all (0, 90, 180, 270) deg counterclockwise rotation and
horizontal and vertical flip controls to (0, 90) deg rotation,
horizontal and vertical flip transformations available
in the device.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Increase the input DMA "successive burst count" to default
value 4 to improve DMA performance. Minor cleanup.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Prevent VIDIOC_STREAMON failing when s_stream callback is
not implemented by a sensor subdev driver.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Remove bus_width from s5p_fimc_isp_info data structure.
Determine camera data bus width based on mediabus pixel format.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Change s3c_fimc.h header file name to s5p_fimc.h, replace s3c_fimc_*
names with s5p_fimc_*. s3c_fimc need to be reserved for S3C series
and s5p-fimc driver will not cover CAMIF devices in S3C SoC series.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Conversion to multiplanar color formats and minor cleanup.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Porting to videobuf 2 and minor cleanup.
Separate videobuf_queue_ops are are created for m2m
and capture video nodes.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Add definitions for format with color planes non-contiguous
in physical memory. These formats apply only if the V4L2 multiplane
extension is used.
V4L2_PIX_FMT_NV12M - 2-plane Y/CbCr
V4L2_PIX_FMT_NV12MT - 2-plane Y/CbCr tiled (64x32 pixel macroblocks)
V4L2_PIX_FMT_YUV420M - 3-plane Y/Cb/Cr
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This patch ports mem2mem test device to videobuf2 framework.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Port memory-to-memory framework to videobuf2 framework.
Add support for multi-planar Video for Linux 2 API extensions to the
memory-to-memory driver framework.
Based on the original patch written by Pawel Osciak.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Add DocBook documentation for the new multi-planar API extensions to the
Video for Linux 2 API DocBook.
Signed-off-by: Pawel Osciak <pawel@osciak.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
drivers/media/video/videobuf2-core.c: In function ‘__vb2_perform_fileio’:
drivers/media/video/videobuf2-core.c:1638: warning: format ‘%ld’ expects type ‘long int’, but argument 4 has type ‘size_t’
drivers/media/video/videobuf2-core.c:1697: warning: format ‘%ld’ expects type ‘long int’, but argument 2 has type ‘size_t’
drivers/media/video/videobuf2-core.c:1703: warning: format ‘%ld’ expects type ‘long int’, but argument 2 has type ‘size_t’
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Add a generic file io (read and write) emulator for videobuf2. It uses
MMAP memory type buffers and generic vb2 calls: req_bufs, qbuf and
dqbuf. Video date is being copied from mmap buffers to userspace with
standard copy_to_user() function. To add support for file io the driver
needs to provide an additional callback - read_setup or write_setup. It
should provide the default number of buffers used by emulator and flags.
With these flags one can detemine the style of read() or write()
emulation. By default 'streaming' style is used. With
VB2_FILEIO_READ_ONCE flag one can select 'one shot' mode for read()
emulator. With VB2_FILEIO_WRITE_IMMEDIATE flag one can select immediate
conversion of write calls to qbuf for write() emulator, so the vb2 will
not wait until each buffer is filled completely before queueing it to
the driver.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
CC: Pawel Osciak <pawel@osciak.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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 <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
CC: Pawel Osciak <pawel@osciak.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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 <p.osciak@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
CC: Pawel Osciak <pawel@osciak.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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 <p.osciak@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
CC: Pawel Osciak <pawel@osciak.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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 management
Signed-off-by: Pawel Osciak <p.osciak@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
CC: Pawel Osciak <pawel@osciak.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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 <p.osciak@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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 <p.osciak@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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 <pboettcher@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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 <m.wilks@technisat.com>
Signed-off-by: Patrick Boettcher <pboettcher@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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 <abraham.manu@gmail.com>
Signed-off-by: Martin Wilks <m.wilks@technisat.com>
Signed-off-by: Patrick Boettcher <pboettcher@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This patch STV090X adds and exports a function to control the GPIOs of
the stv090x-devices.
Cc: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Martin Wilks <m.wilks@technisat.com>
Signed-off-by: Patrick Boettcher <pboettcher@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* '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.
...
* '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 <torvalds@linux-foundation.org>
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 <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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 <florian@openwrt.org>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2093/
Acked-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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 <florian@openwrt.org>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2111/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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 <mrayskiy@broadcom.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2070/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Leverage the commit for ARM by Will Deacon:
- 446a5a8b1e
ARM: 6205/1: perf: ensure counter delta is treated as unsigned
Hardware 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 <-- 0xFFFFFFFFF12A6000
7783773 instructions # 0.000 IPC
465 context-switches
161 page-faults
1172393 branches
20.154242147 seconds time elapsed
This patch ensures that the delta value is treated as unsigned so that the
right shift sets the upper bits to zero.
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@gmail.com>
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 <ralf@linux-mips.org>
This is the MIPS part of the following commits by Frederic Weisbecker:
- f72c1a931e
perf: Factorize callchain context handling
Store the kernel and user contexts from the generic layer instead
of archs, this gathers some repetitive code.
- 56962b4449
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).
- 70791ce9ba
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.
- c1a65932fd
perf: Drop unappropriate tests on arch callchains
Drop 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 <wuzhangjin@gmail.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@gmail.com>
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 <ralf@linux-mips.org>
