This patch improves the performance of event alternative lookup by
replacing the previous linear search with a more efficient binary
search. This change reduces the time complexity for the search process
from O(n) to O(log(n)). A pre-sorted table of event values and their
corresponding indices has
On Wed, 11 Oct 2023 08:14:04 +0200 Herve Codina wrote:
> Compare to the previous iteration
>
> https://lore.kernel.org/linux-kernel/20230928070652.330429-1-herve.cod...@bootlin.com/
> This v8 series:
> - Fixes a race condition
> - Uses menuconfig instead of menu and hides
On Wed, 11 Oct 2023 08:14:30 +0200 Herve Codina wrote:
> The Lantiq PEF2256 is a framer and line interface component designed to
> fulfill all required interfacing between an analog E1/T1/J1 line and the
> digital PCM system highway/H.100 bus.
Acked-by: Jakub Kicinski
On Wed, 11 Oct 2023 08:14:28 +0200 Herve Codina wrote:
> A framer is a component in charge of an E1/T1 line interface.
> Connected usually to a TDM bus, it converts TDM frames to/from E1/T1
> frames. It also provides information related to the E1/T1 line.
>
> The framer framework provides a set
On Wed, 11 Oct 2023 08:14:27 +0200 Herve Codina wrote:
> QMC channels support runtime timeslots changes but nothing is done at
> the QMC HDLC driver to handle these changes.
>
> Use existing IFACE ioctl in order to configure the timeslots to use.
>
> Signed-off-by: Herve Codina
> Reviewed-by:
On Wed, 11 Oct 2023 08:14:14 +0200 Herve Codina wrote:
> The QMC HDLC driver provides support for HDLC using the QMC (QUICC
> Multichannel Controller) to transfer the HDLC data.
>
> Signed-off-by: Herve Codina
> Reviewed-by: Christophe Leroy
Acked-by: Jakub Kicinski
From: Nathan Lynch
Consistently testing system parameter access is a bit difficult by
nature -- the set of parameters available depends on the model and
system configuration, and updating a parameter should be considered a
destructive operation reserved for the admin.
So we validate some of the
From: Nathan Lynch
PowerVM LPARs may retrieve Vital Product Data (VPD) for system
components using the ibm,get-vpd RTAS function.
We can expose this to user space with a /dev/papr-vpd character
device, where the programming model is:
struct papr_location_code plc = { .str = "", }; /* obtain
From: Nathan Lynch
Until now the papr_sysparm APIs have been kernel-internal. But user
space needs access to PAPR system parameters too. The only method
available to user space today to get or set system parameters is using
sys_rtas() and /dev/mem to pass RTAS-addressable buffers between user
From: Nathan Lynch
The ability to get and set system parameters will be exposed to user
space, so let's get a little more strict about malformed
papr_sysparm_buf objects.
* Create accessors for the length field of struct papr_sysparm_buf.
The length is always stored in MSB order and this is
From: Nathan Lynch
Allocate one identifying code (the first column of the ioctl-number
table) for the collection of PAPR miscdev drivers to share.
Signed-off-by: Nathan Lynch
---
arch/powerpc/include/uapi/asm/papr-miscdev.h | 9 +
1 file changed, 9 insertions(+)
diff --git
From: Nathan Lynch
Add selftests for /dev/papr-vpd, exercising the common expected use
cases:
* Retrieve all VPD by passing an empty location code.
* Retrieve the "system VPD" by passing a location code derived from DT
root node properties, as done by the vpdupdate command.
The tests also
From: Nathan Lynch
Take the papr-vpd driver's internal mutex when sys_rtas performs
ibm,get-vpd calls. This prevents sys_rtas(ibm,get-vpd) calls from
interleaving with sequences performed by the driver, ensuring that
such sequences are not disrupted.
However, it cannot prevent the driver from
Add character devices that expose PAPR-specific system parameters and
VPD to user space.
The problem: important platform features are enabled on Linux VMs
through the powerpc-specific rtas() syscall in combination with
writeable mappings of /dev/mem. In typical usage, this is encapsulated
behind
On Thu, Oct 12, 2023 at 12:25 AM Heiko Carstens wrote:
>
> On Mon, Aug 07, 2023 at 04:04:56PM -0700, Vishal Moola (Oracle) wrote:
> > As part of the conversions to replace pgtable constructor/destructors with
> > ptdesc equivalents, convert various page table functions to use ptdescs.
> >
> >
On 10/11/23 1:36 PM, Nathan Lynch wrote:
Haren Myneni writes:
Haren Myneni writes:
The hypervisor returns migration failure if all VAS windows are not
closed. During pre-migration stage, vas_migration_handler() sets
migration_in_progress flag and closes all windows from the list.
The
Nathan,
> Clang warns (or errors with CONFIG_WERROR=y) several times along the
> lines of:
>
> drivers/scsi/ibmvscsi/ibmvfc.c:650:17: warning: implicit truncation from
> 'int' to a one-bit wide bit-field changes value from 1 to -1
> [-Wsingle-bit-bitfield-constant-conversion]
> 650 |
On Fri, 2023-10-13 at 17:44 +0200, Arnd Bergmann wrote:
> On Thu, Oct 12, 2023, at 18:36, Geoff Levand wrote:
> > On 10/12/23 17:41, Johannes Berg wrote:
> > > But seriously - is it worth to try to keep a wireless driver for it if
> > > we don't even know anyone using a PS3 at all?
> >
> > There
Hello Christophe,
On 13/10/23 18:59, Christophe Leroy wrote:
Le 19/06/2023 à 04:49, Sourabh Jain a écrit :
Move update_cpus_node and get_crash_memory_ranges functions from
kexec/file_load_64.c to kexec/core_64.c to make these functions usable
by other kexec components.
Later in the series,
allnoconfig gcc
arc allyesconfig gcc
arc defconfig gcc
arc randconfig-001-20231012 gcc
arc randconfig-001-20231013 gcc
arm
On Thu, Oct 12, 2023, at 18:36, Geoff Levand wrote:
> On 10/12/23 17:41, Johannes Berg wrote:
>> But seriously - is it worth to try to keep a wireless driver for it if
>> we don't even know anyone using a PS3 at all?
>
> There is still a considerable user base for the PS3, so we
> must keep the
On Thu, Oct 12, 2023 at 5:08 PM Björn Töpel wrote:
>
> Anup Patel writes:
>
> > From: Atish Patra
> >
> > RISC-V SBI specification supports advanced debug console
> > support via SBI DBCN extension.
> >
> > Extend the HVC SBI driver to support it.
> >
> > Signed-off-by: Atish Patra
> >
On Fri, Oct 13, 2023 at 04:30:59PM +0800, Shengjiu Wang wrote:
> Register m2m platform device,that user can
> use M2M feature.
Acked-by: Mark Brown
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Description: PGP signature
Le 19/06/2023 à 04:49, Sourabh Jain a écrit :
> Move update_cpus_node and get_crash_memory_ranges functions from
> kexec/file_load_64.c to kexec/core_64.c to make these functions usable
> by other kexec components.
>
> Later in the series, these functions are utilized to do in-kernel update
>
On Fri, Oct 13, 2023 at 04:30:58PM +0800, Shengjiu Wang wrote:
> Register m2m platform device, that user can
> use M2M feature.
>
> Defined platform data structure and platform
> driver name.
Acked-by: Mark Brown
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On Fri, Oct 13, 2023 at 04:30:57PM +0800, Shengjiu Wang wrote:
> Move fsl_asrc_common.h to include/sound that it can be
> included from other drivers.
Acked-by: Mark Brown
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On Fri, Oct 13, 2023 at 04:30:56PM +0800, Shengjiu Wang wrote:
> ASRC can be used on memory to memory case, define several
> functions for m2m usage and export them as function pointer.
Acked-by: Mark Brown
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On Fri, Oct 13, 2023 at 04:30:55PM +0800, Shengjiu Wang wrote:
> ASRC can be used on memory to memory case, define several
> functions for m2m usage.
Acked-by: Mark Brown
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Le 07/06/2023 à 02:56, Nicholas Piggin a écrit :
> Fix an upstream powerpc bug that was discovered with a WARN_ON added in
> "lazy tlb: consolidate lazy tlb mm switching":
>
> Switching mm and tinkering with current->active_mm should be done with
> irqs disabled. There is a path where
Le 01/09/2023 à 20:03, Immad Mir a écrit :
>
> On 01/09/23 11:10 pm, Christophe Leroy wrote:
>>
>> Le 01/09/2023 à 19:19, mirim...@outlook.com a écrit :
>>> [Vous ne recevez pas souvent de courriers de mirim...@outlook.com.
>>> Découvrez pourquoi ceci est important à
>>>
Le 16/02/2023 à 00:11, Rohan McLure a écrit :
> Support the page table check sanitiser on all PowerPC platforms. This
> sanitiser works by serialising assignments, reassignments and clears of
> page table entries at each level in order to ensure that anonymous
> mappings have at most one
Hello:
This patch was applied to netdev/net-next.git (main)
by David S. Miller :
On Mon, 09 Oct 2023 23:19:57 + you wrote:
> `strncpy` is deprecated for use on NUL-terminated destination strings
> [1] and as such we should prefer more robust and less ambiguous string
> interfaces.
>
>
Hello:
This patch was applied to netdev/net-next.git (main)
by David S. Miller :
On Mon, 9 Oct 2023 12:28:58 -0500 you wrote:
> Use preferred device_get_match_data() instead of of_match_device() to
> get the driver match data. With this, adjust the includes to explicitly
> include the correct
Audio memory to memory virtual driver use video memory to memory
virtual driver vim2m.c as example. The main difference is
device type is VFL_TYPE_AUDIO and device cap type is V4L2_CAP_AUDIO_M2M.
The device_run function is a dummy function, which is simply
copy the data from input buffer to
Implement the ASRC memory to memory function using
the v4l2 framework, user can use this function with
v4l2 ioctl interface.
User send the output and capture buffer to driver and
driver store the converted data to the capture buffer.
This feature can be shared by ASRC and EASRC drivers
Fixed point controls are used by the user to configure
the audio sample rate to driver.
Add V4L2_CID_ASRC_SOURCE_RATE and V4L2_CID_ASRC_DEST_RATE
new IDs for ASRC rate control.
Signed-off-by: Shengjiu Wang
---
.../userspace-api/media/v4l/common.rst| 1 +
The audio sample format definition is from alsa,
the header file is include/uapi/sound/asound.h, but
don't include this header file directly, because in
user space, there is another copy in alsa-lib.
There will be conflict in userspace for include
videodev2.h & asound.h and asoundlib.h
Here still
Audio signal processing has the requirement for memory to
memory similar as Video.
This patch is to add this support in v4l2 framework, defined
new buffer type V4L2_BUF_TYPE_AUDIO_CAPTURE and
V4L2_BUF_TYPE_AUDIO_OUTPUT, defined new format v4l2_audio_format
for audio case usage.
The created audio
V4L2_CAP_AUDIO_M2M is similar to V4L2_CAP_VIDEO_M2M flag.
It is used for audio memory to memory case.
Signed-off-by: Shengjiu Wang
---
Documentation/userspace-api/media/v4l/vidioc-querycap.rst| 3 +++
Documentation/userspace-api/media/videodev2.h.rst.exceptions | 1 +
Register m2m platform device,that user can
use M2M feature.
Signed-off-by: Shengjiu Wang
---
sound/soc/fsl/fsl_easrc.c | 19 +++
1 file changed, 19 insertions(+)
diff --git a/sound/soc/fsl/fsl_easrc.c b/sound/soc/fsl/fsl_easrc.c
index dc603bb383e2..8ba6f045f425 100644
---
Register m2m platform device, that user can
use M2M feature.
Defined platform data structure and platform
driver name.
Signed-off-by: Shengjiu Wang
---
include/sound/fsl_asrc_common.h | 23 +++
sound/soc/fsl/fsl_asrc.c| 18 ++
2 files changed, 41
Move fsl_asrc_common.h to include/sound that it can be
included from other drivers.
Signed-off-by: Shengjiu Wang
---
{sound/soc/fsl => include/sound}/fsl_asrc_common.h | 0
sound/soc/fsl/fsl_asrc.h | 2 +-
sound/soc/fsl/fsl_asrc_dma.c | 2 +-
ASRC can be used on memory to memory case, define several
functions for m2m usage and export them as function pointer.
Signed-off-by: Shengjiu Wang
---
sound/soc/fsl/fsl_easrc.c | 193 ++
sound/soc/fsl/fsl_easrc.h | 4 +
2 files changed, 197 insertions(+)
ASRC can be used on memory to memory case, define several
functions for m2m usage.
m2m_prepare: prepare for the start step
m2m_start: the start step
m2m_unprepare: unprepare for stop step, optional
m2m_stop: stop step
m2m_check_format: check format is supported or not
m2m_calc_out_len: calculate
Audio signal processing also has the requirement for memory to
memory similar as Video.
This asrc memory to memory (memory ->asrc->memory) case is a non
real time use case.
User fills the input buffer to the asrc module, after conversion, then asrc
sends back the output buffer to user. So it is
Add rule in new Makefile "tests/Makefile.tests" for running
shellcheck on shell test scripts. This automates below shellcheck
into the build.
$ for F in $(find tests/shell/ -perm -o=x -name '*.sh'); do shellcheck
-S warning $F; done
Condition for shellcheck is added in Makefile.perf to
shellcheck was run on perf tool shell scripts as a pre-requisite
to include a build option for shellcheck discussed here:
https://www.spinics.net/lists/linux-perf-users/msg25553.html
And fixes were added for the coding/formatting issues in
two patchsets:
Running shellcheck on record_sideband.sh throws below
warning:
In tests/shell/record_sideband.sh line 25:
if ! perf record -o ${perfdata} -BN --no-bpf-event -C $1 true 2>&1
>/dev/null
^--^ SC2069: To redirect stdout+stderr, 2>&1 must be last (or use
'{ cmd > file;
Running shellcheck on lock_contention.sh generates below
warning
In tests/shell/lock_contention.sh line 36:
if [ `nproc` -lt 4 ]; then
^-^ SC2046: Quote this to prevent word splitting.
Here since nproc will generate a single word output
and there is no
Running shellcheck on stat_all_metricgroups.sh reports
below warning:
In ./tests/shell/stat_all_metricgroups.sh line 7:
function ParanoidAndNotRoot()
^-- SC2112: 'function' keyword is non-standard. Delete it.
As per the format, "function" is a non-standard keyword that
can be used to declare
Fixed 'instead' typo
Signed-off-by: Muhammad Muzammil
---
arch/powerpc/net/bpf_jit_comp32.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/net/bpf_jit_comp32.c
b/arch/powerpc/net/bpf_jit_comp32.c
index 7f91ea064c08..bc7f92ec7f2d 100644
---
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