On Fri, Sep 29, 2023 at 3:19 AM Linus Torvalds
wrote:
...
> So yes, real programs to cache stat information, and it matters for
> performance.
>
> But I don't think any actual reasonable program will have
> *correctness* issues, though -
I beg to disagree.
> because there are certainly
On Thu, Sep 28, 2023 at 8:19 PM Darrick J. Wong wrote:
>
> On Thu, Sep 28, 2023 at 01:06:03PM -0400, Jeff Layton wrote:
> > On Thu, 2023-09-28 at 11:48 -0400, Arnd Bergmann wrote:
> > > On Thu, Sep 28, 2023, at 07:05, Jeff Layton wrote:
> > > > This shaves 8 bytes off struct inode, according to
> On 27-Sep-2023, at 8:25 PM, Athira Rajeev wrote:
>
>
>
>> On 27-Sep-2023, at 5:45 AM, Namhyung Kim wrote:
>>
>> On Thu, Sep 14, 2023 at 10:40 PM Athira Rajeev
>> wrote:
>>>
>>> The testcase "Object code reading" fails in somecases
>>> for "fs_something" sub test as below:
>>>
>>>
> On 27-Sep-2023, at 9:55 AM, Athira Rajeev wrote:
>
>
>
>> On 27-Sep-2023, at 5:25 AM, Namhyung Kim wrote:
>>
>> On Thu, Sep 14, 2023 at 10:18 AM Athira Rajeev
>> wrote:
>>>
>>> Add rule in new Makefile "tests/Makefile.tests" for running
>>> shellcheck on shell test scripts. This
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 $1 true 2>&1
>/dev/null
^--^ SC2069: To redirect stdout+stderr, 2>&1 must be last (or use
'{ cmd > file;
Running shellcheck on lock_contention.sh generates below
warning
In tests/shell/lock_contention.sh line 36:
if [ `nproc` -lt 4 ]; then
^-^ SC2046: Quote this to prevent word splitting.
Here since nproc will generate a single word output
and there is no
Running shellcheck on tests/shell/test_arm_coresight.sh
throws below warnings:
In tests/shell/test_arm_coresight.sh line 15:
cs_etm_path=$(find /sys/bus/event_source/devices/cs_etm/ -name cpu*
-print -quit)
^--^ SC2061: Quote the parameter to -name so the shell
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:
On Fri, Sep 29, 2023 at 4:36 AM Wen Xiong wrote:
>
> Hi Pingfan,
>
> + avail = intserv_node->avail;
> + nthreads = intserv_node->len / sizeof(int);
> + for (j = 0; j < nthreads && cpu < nr_cpu_ids; j++) {
> set_cpu_present(cpu,
On Thu, 28 Sept 2023 at 14:28, Theodore Ts'o wrote:
>
> I don't think anyone will complain about breaking the userspace API
> --- especially since if, say, the CIA was using this for their spies'
> drop boxes, they probably wouldn't want to admit it. :-)
Well, you will find that real apps do
On Thu, Sep 28, 2023 at 01:40:55PM -0400, Jeff Layton wrote:
>
> Correct. We'd lose some fidelity in currently stored timestamps, but as
> Linus and Ted pointed out, anything below ~100ns granularity is
> effectively just noise, as that's the floor overhead for calling into
> the kernel. It's
On Thu, Sep 28, 2023, at 13:40, Jeff Layton wrote:
> On Thu, 2023-09-28 at 10:19 -0700, Darrick J. Wong wrote:
>>
>> > I remember seeing those patches go by. I don't remember that change
>> > being NaK'ed, but I wasn't paying close attention at the time
>> >
>> > Looking at it objectively now, I
On Thu, Sep 28, 2023 at 03:21:36PM +0200, Joel Granados via B4 Relay wrote:
> From: Joel Granados
>
> This commit comes at the tail end of a greater effort to remove the
> empty elements at the end of the ctl_table arrays (sentinels) which
> will reduce the overall build time size of the kernel
On Thu, 28 Sept 2023 at 04:06, Jeff Layton wrote:
>
> Move i_blocks up above the i_lock, which moves the new 4 byte hole to
> just after the timestamps, without changing the size of the structure.
I'm sure others have mentioned this, but 'struct inode' is marked with
__randomize_layout, so the
On Thu, 2023-09-28 at 10:41 -0700, Linus Torvalds wrote:
> On Thu, 28 Sept 2023 at 04:06, Jeff Layton wrote:
> >
> > Move i_blocks up above the i_lock, which moves the new 4 byte hole to
> > just after the timestamps, without changing the size of the structure.
>
> I'm sure others have
On Thu, 2023-09-28 at 10:19 -0700, Darrick J. Wong wrote:
> On Thu, Sep 28, 2023 at 01:06:03PM -0400, Jeff Layton wrote:
> > On Thu, 2023-09-28 at 11:48 -0400, Arnd Bergmann wrote:
> > > On Thu, Sep 28, 2023, at 07:05, Jeff Layton wrote:
> > > > This shaves 8 bytes off struct inode, according to
On Thu, Sep 28, 2023 at 01:06:03PM -0400, Jeff Layton wrote:
> On Thu, 2023-09-28 at 11:48 -0400, Arnd Bergmann wrote:
> > On Thu, Sep 28, 2023, at 07:05, Jeff Layton wrote:
> > > This shaves 8 bytes off struct inode, according to pahole.
> > >
> > > Signed-off-by: Jeff Layton
> >
> > FWIW,
On Thu, 2023-09-28 at 07:05 -0400, Jeff Layton wrote:
> This shaves 8 bytes off struct inode, according to pahole.
>
> Signed-off-by: Jeff Layton
> ---
> include/linux/fs.h | 32 +++-
> 1 file changed, 23 insertions(+), 9 deletions(-)
>
> diff --git
On Thu, 2023-09-28 at 11:48 -0400, Arnd Bergmann wrote:
> On Thu, Sep 28, 2023, at 07:05, Jeff Layton wrote:
> > This shaves 8 bytes off struct inode, according to pahole.
> >
> > Signed-off-by: Jeff Layton
>
> FWIW, this is similar to the approach that Deepa suggested
> back in 2016:
>
>
On Thu, Sep 28, 2023, at 07:05, Jeff Layton wrote:
> This shaves 8 bytes off struct inode, according to pahole.
>
> Signed-off-by: Jeff Layton
FWIW, this is similar to the approach that Deepa suggested
back in 2016:
Hi,
I'm running Debian on an old Powermac (32-bit PPC G4).
I'm seeing kernel panics with 6.5.0-1.
Everything seems to be fine with:
Linux powermac-g4 6.4.0-4-powerpc #1 Debian 6.4.13-1 (2023-08-31) ppc
GNU/Linux
0.00] MSR:9032 CR: 48024242 XER:
0.00]
On Fri, 15 Sep 2023 17:30:54 -0700
Sean Christopherson wrote:
> Move the definitions of vfio_device_get_kvm_safe() and vfio_device_put_kvm()
> down in vfio_main.c to colocate them with other KVM-specific functions,
> e.g. to allow wrapping them all with a single CONFIG_KVM check.
>
>
On Fri, 15 Sep 2023 17:30:57 -0700
Sean Christopherson wrote:
> Explicitly pass KVM's get/put helpers to VFIO when attaching a VM to
> VFIO instead of having VFIO do a symbol lookup back into KVM. Having both
> KVM and VFIO do symbol lookups increases the overall complexity and places
> an
On Fri, 15 Sep 2023 17:30:55 -0700
Sean Christopherson wrote:
> Hide vfio_file_set_kvm() and its unique helpers if KVM is not enabled,
> nothing else in the kernel (or out of the kernel) should be using a
> KVM specific helper.
>
> Signed-off-by: Sean Christopherson
> ---
>
On Fri, 15 Sep 2023 17:30:53 -0700
Sean Christopherson wrote:
> Wrap the helpers for getting references to KVM instances with a check on
> CONFIG_KVM being enabled, not on CONFIG_HAVE_KVM being defined. PPC does
> NOT select HAVE_KVM, despite obviously supporting KVM, and guarding code
> to get
On Fri, 15 Sep 2023 17:30:56 -0700
Sean Christopherson wrote:
> Add a struct to hold the KVM assets need to manage and pass along KVM
> references to VFIO devices. Providing a common struct deduplicates the
> group vs. iommufd code, and will make it easier to rework the attachment
> logic so
On Fri, 15 Sep 2023 17:30:58 -0700
Sean Christopherson wrote:
> Drop KVM's KVM_VFIO Kconfig, and instead compile in VFIO support if
> and only if VFIO itself is enabled. Similar to the recent change to have
> VFIO stop looking at HAVE_KVM, compiling in support for talking to VFIO
> just because
On Thu, Sep 28, 2023 at 12:49 PM Hari Bathini wrote:
>
> Use bpf_jit_binary_pack_alloc in powerpc jit. The jit engine first
> writes the program to the rw buffer. When the jit is done, the program
> is copied to the final location with bpf_jit_binary_pack_finalize.
> With multiple jit_subprogs,
On Thu, Sep 28, 2023 at 12:48 PM Hari Bathini wrote:
>
> powerpc64_jit_data is a misnomer as it is meant for both ppc32 and
> ppc64. Rename it to powerpc_jit_data.
>
> Signed-off-by: Hari Bathini
Acked-by: Song Liu
On Thu, Sep 28, 2023 at 12:49 PM Hari Bathini wrote:
>
> Implement bpf_arch_text_invalidate and use it to fill unused part of
> the bpf_prog_pack with trap instructions when a BPF program is freed.
>
> Signed-off-by: Hari Bathini
Acked-by: Song Liu
On Thu, Sep 28, 2023 at 12:48 PM Hari Bathini wrote:
>
> bpf_arch_text_copy is used to dump JITed binary to RX page, allowing
> multiple BPF programs to share the same page. Use the newly introduced
> patch_instructions() to implement it.
>
> Signed-off-by: Hari Bathini
Acked-by: Song Liu
On Thu, Sep 28, 2023 at 12:48 PM Hari Bathini wrote:
>
> patch_instruction() entails setting up pte, patching the instruction,
> clearing the pte and flushing the tlb. If multiple instructions need
> to be patched, every instruction would have to go through the above
> drill unnecessarily.
Hi Pingfan,
+ avail = intserv_node->avail;
+ nthreads = intserv_node->len / sizeof(int);
+ for (j = 0; j < nthreads && cpu < nr_cpu_ids; j++) {
set_cpu_present(cpu, avail);
set_cpu_possible(cpu, true);
-
On 26/09/23 12:21 pm, Christophe Leroy wrote:
Le 26/09/2023 à 00:50, Song Liu a écrit :
On Fri, Sep 8, 2023 at 6:28 AM Hari Bathini wrote:
patch_instruction() entails setting up pte, patching the instruction,
clearing the pte and flushing the tlb. If multiple instructions need
to be
Use bpf_jit_binary_pack_alloc in powerpc jit. The jit engine first
writes the program to the rw buffer. When the jit is done, the program
is copied to the final location with bpf_jit_binary_pack_finalize.
With multiple jit_subprogs, bpf_jit_free is called on some subprograms
that haven't got
powerpc64_jit_data is a misnomer as it is meant for both ppc32 and
ppc64. Rename it to powerpc_jit_data.
Signed-off-by: Hari Bathini
---
arch/powerpc/net/bpf_jit_comp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/net/bpf_jit_comp.c
Implement bpf_arch_text_invalidate and use it to fill unused part of
the bpf_prog_pack with trap instructions when a BPF program is freed.
Signed-off-by: Hari Bathini
---
arch/powerpc/net/bpf_jit_comp.c | 15 +++
1 file changed, 15 insertions(+)
diff --git
bpf_arch_text_copy is used to dump JITed binary to RX page, allowing
multiple BPF programs to share the same page. Use the newly introduced
patch_instructions() to implement it.
Signed-off-by: Hari Bathini
---
arch/powerpc/net/bpf_jit_comp.c | 20 +++-
1 file changed, 19
patch_instruction() entails setting up pte, patching the instruction,
clearing the pte and flushing the tlb. If multiple instructions need
to be patched, every instruction would have to go through the above
drill unnecessarily. Instead, introduce function patch_instructions()
that sets up the pte,
Most BPF programs are small, but they consume a page each. For systems
with busy traffic and many BPF programs, this may also add significant
pressure on instruction TLB. High iTLB pressure usually slows down the
whole system causing visible performance degradation for production
workloads.
Le 28/09/2023 à 15:21, Joel Granados via B4 Relay a écrit :
> From: Joel Granados
Automatic test fails on powerpc, see
https://patchwork.ozlabs.org/project/linuxppc-dev/patch/20230928-jag-sysctl_remove_empty_elem_drivers-v1-15-e59120fca...@samsung.com/
Kernel attempted to read user p
Please change the prefix to "Drivers: hv:" in the subject line in the
two patches.
On Thu, Sep 28, 2023 at 03:21:39PM +0200, Joel Granados via B4 Relay wrote:
> From: Joel Granados
>
> This commit comes at the tail end of a greater effort to remove the
> empty elements at the end of the
On Thu, Sep 28, 2023 at 6:20 AM Joel Granados via B4 Relay
wrote:
>
> From: Joel Granados
>
> This commit comes at the tail end of a greater effort to remove the
> empty elements at the end of the ctl_table arrays (sentinels) which
> will reduce the overall build time size of the kernel and run
On Thu, Sep 28, 2023 at 03:21:26PM +0200, Joel Granados via B4 Relay wrote:
> From: Joel Granados
>
> This commit comes at the tail end of a greater effort to remove the
> empty elements at the end of the ctl_table arrays (sentinels) which
> will reduce the overall build time size of the kernel
From: Joel Granados
This commit comes at the tail end of a greater effort to remove the
empty elements at the end of the ctl_table arrays (sentinels) which
will reduce the overall build time size of the kernel and run time
memory bloat by ~64 bytes per sentinel (further information Link :
From: Joel Granados
This commit comes at the tail end of a greater effort to remove the
empty elements at the end of the ctl_table arrays (sentinels) which
will reduce the overall build time size of the kernel and run time
memory bloat by ~64 bytes per sentinel (further information Link :
From: Joel Granados
This commit comes at the tail end of a greater effort to remove the
empty elements at the end of the ctl_table arrays (sentinels) which
will reduce the overall build time size of the kernel and run time
memory bloat by ~64 bytes per sentinel (further information Link :
From: Joel Granados
This commit comes at the tail end of a greater effort to remove the
empty elements at the end of the ctl_table arrays (sentinels) which
will reduce the overall build time size of the kernel and run time
memory bloat by ~64 bytes per sentinel (further information Link :
From: Joel Granados
This commit comes at the tail end of a greater effort to remove the
empty elements at the end of the ctl_table arrays (sentinels) which
will reduce the overall build time size of the kernel and run time
memory bloat by ~64 bytes per sentinel (further information Link :
From: Joel Granados
This commit comes at the tail end of a greater effort to remove the
empty elements at the end of the ctl_table arrays (sentinels) which
will reduce the overall build time size of the kernel and run time
memory bloat by ~64 bytes per sentinel (further information Link :
From: Joel Granados
This commit comes at the tail end of a greater effort to remove the
empty elements at the end of the ctl_table arrays (sentinels) which
will reduce the overall build time size of the kernel and run time
memory bloat by ~64 bytes per sentinel (further information Link :
From: Joel Granados
This commit comes at the tail end of a greater effort to remove the
empty elements at the end of the ctl_table arrays (sentinels) which
will reduce the overall build time size of the kernel and run time
memory bloat by ~64 bytes per sentinel (further information Link :
From: Joel Granados
This commit comes at the tail end of a greater effort to remove the
empty elements at the end of the ctl_table arrays (sentinels) which
will reduce the overall build time size of the kernel and run time
memory bloat by ~64 bytes per sentinel (further information Link :
From: Joel Granados
This commit comes at the tail end of a greater effort to remove the
empty elements at the end of the ctl_table arrays (sentinels) which
will reduce the overall build time size of the kernel and run time
memory bloat by ~64 bytes per sentinel (further information Link :
From: Joel Granados
This commit comes at the tail end of a greater effort to remove the
empty elements at the end of the ctl_table arrays (sentinels) which
will reduce the overall build time size of the kernel and run time
memory bloat by ~64 bytes per sentinel (further information Link :
From: Joel Granados
This commit comes at the tail end of a greater effort to remove the
empty elements at the end of the ctl_table arrays (sentinels) which
will reduce the overall build time size of the kernel and run time
memory bloat by ~64 bytes per sentinel (further information Link :
From: Joel Granados
This commit comes at the tail end of a greater effort to remove the
empty elements at the end of the ctl_table arrays (sentinels) which
will reduce the overall build time size of the kernel and run time
memory bloat by ~64 bytes per sentinel (further information Link :
From: Joel Granados
This commit comes at the tail end of a greater effort to remove the
empty elements at the end of the ctl_table arrays (sentinels) which
will reduce the overall build time size of the kernel and run time
memory bloat by ~64 bytes per sentinel (further information Link :
From: Joel Granados
What?
These commits remove the sentinel element (last empty element) from the
sysctl arrays of all the files under the "drivers/" directory that use a
sysctl array for registration. The merging of the preparation patches
(in
From: Joel Granados
This commit comes at the tail end of a greater effort to remove the
empty elements at the end of the ctl_table arrays (sentinels) which
will reduce the overall build time size of the kernel and run time
memory bloat by ~64 bytes per sentinel (further information Link :
On Thu, 2023-09-28 at 14:35 +0300, Amir Goldstein wrote:
> On Thu, Sep 28, 2023 at 2:06 PM Jeff Layton wrote:
> >
> > The recent change to use discrete integers instead of struct timespec64
> > in struct inode shaved 8 bytes off of it, but it also moves the i_lock
> > into the previous
On Thu, Sep 28, 2023 at 2:06 PM Jeff Layton wrote:
>
> The recent change to use discrete integers instead of struct timespec64
> in struct inode shaved 8 bytes off of it, but it also moves the i_lock
> into the previous cacheline, away from the fields that it protects.
>
> Move i_blocks up above
The recent change to use discrete integers instead of struct timespec64
in struct inode shaved 8 bytes off of it, but it also moves the i_lock
into the previous cacheline, away from the fields that it protects.
Move i_blocks up above the i_lock, which moves the new 4 byte hole to
just after the
This shaves 8 bytes off struct inode, according to pahole.
Signed-off-by: Jeff Layton
---
include/linux/fs.h | 32 +++-
1 file changed, 23 insertions(+), 9 deletions(-)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 831657011036..de902ff2938b 100644
---
Make it clear that these fields are private now, and that the accessors
should be used instead.
Signed-off-by: Jeff Layton
---
include/linux/fs.h | 14 +++---
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index
Recently, we converted the ctime accesses in the kernel to use new
accessor functions. Linus recently pointed out though that if we add
accessors for the atime and mtime, then that would allow us to
seamlessly change how these timestamps are stored in the inode.
Add new accessor functions for the
While working on the multigrain timestamp changes, Linus suggested
adding some similar wrappers for accessing the atime and mtime that we
have for the ctime. With that, we could then move to using discrete
integers instead of timespec64 in struct inode, and shrink it.
Linus suggested using macros
Signed-off-by: Jeff Layton
---
arch/powerpc/platforms/cell/spufs/inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms/cell/spufs/inode.c
b/arch/powerpc/platforms/cell/spufs/inode.c
index 38c5be34c895..10c1320adfd0 100644
---
On 19-09-23, 15:31, Uwe Kleine-König wrote:
> Hello,
>
> this series convert nearly all platform drivers below drivers/dma to use
> .remove_new(). The motivation is to get rid of an integer return code
> that is (mostly) ignored by the platform driver core and error prone on
> the driver side.
I
On Tue, 19 Sep 2023 15:31:08 +0200, Uwe Kleine-König wrote:
> this series convert nearly all platform drivers below drivers/dma to use
> .remove_new(). The motivation is to get rid of an integer return code
> that is (mostly) ignored by the platform driver core and error prone on
> the driver
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
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 rate controls is used for user to configure
the audio sample rate to driver.
Add V4L2_CID_ASRC_SOURCE_RATE and V4L2_CID_ASRC_DEST_RATE
new ID for ASRC rate control.
Signed-off-by: Shengjiu Wang
---
.../userspace-api/media/v4l/common.rst| 1 +
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 50aee04e7915..cf1f559e825c 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 | 195 ++
sound/soc/fsl/fsl_easrc.h | 6 ++
2 files changed, 201 insertions(+)
ASRC can be used on memory to memory case, define several
functions for m2m usage.
m2m_start_part_one: first part of the start steps
m2m_start_part_two: second part of the start steps
m2m_stop_part_one: first part of stop steps
m2m_stop_part_two: second part of stop steps, optional
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
The testcase "Object code reading" fails in somecases
for "fs_something" sub test as below:
Reading object code for memory address: 0xc00807f0142c
File is: /lib/modules/6.5.0-rc3+/kernel/fs/xfs/xfs.ko
On file address is: 0x1114cc
Objdump command is: objdump -z -d
Update "struct dso" to include new member "is_kmod".
This new field will determine if the file is a kernel
module or not.
To resolve the address from a sample, perf looks at the
DSO maps. In case of address from a kernel module, there
were some address found to be not resolved. This was
observed
Update "struct dso" to include new member "text_end".
This new field will represent the offset for end of text
section for a dso. For elf, this value is derived as:
sh_size (Size of section in byes) + sh_offset (Section file
offst) of the elf header for text.
For bfd, this value is derived as:
1.
Add framer support in the fsl_qmc_hdlc driver in order to be able to
signal carrier changes to the network stack based on the framer status
Also use this framer to provide information related to the E1/T1 line
interface on IF_GET_IFACE and configure the line interface according to
IF_IFACE_{E1,T1}
The framer codec interacts with a framer.
It allows to use some of the framer timeslots as audio channels to
transport audio data over the framer E1/T1/J1 lines.
It also reports line carrier detection events through the ALSA jack
detection feature.
Signed-off-by: Herve Codina
Reviewed-by:
After contributing the driver, add myself as the maintainer for the
Lantiq PEF2256 driver.
Signed-off-by: Herve Codina
Reviewed-by: Christophe Leroy
---
MAINTAINERS | 8
1 file changed, 8 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 8b987f2c8633..d8f2433e326e 100644
---
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.
This kind of component can be found in old telecommunication system.
It was used to digital transmission of many
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.
Signed-off-by: Herve Codina
Reviewed-by: Christophe Leroy
Reviewed-by: Linus Walleij
---
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.
Signed-off-by: Herve Codina
Reviewed-by: Christophe Leroy
---
.../bindings/net/lantiq,pef2256.yaml |
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 of APIs for the framer drivers
(framer provider) to create/destroy
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: Christophe Leroy
---
drivers/net/wan/fsl_qmc_hdlc.c | 169
Introduce qmc_chan_{get,set}_ts_info() function to allow timeslots
modification at runtime.
The modification is provided using qmc_chan_set_ts_info() and will be
applied on next qmc_chan_start().
qmc_chan_set_ts_info() must be called with the channel rx and/or tx
stopped.
Signed-off-by: Herve
Timeslots setting is done at channel start() and stop().
There is no more need to do that during setup_chan().
Simply remove timeslot setting from setup_chan().
Signed-off-by: Herve Codina
Reviewed-by: Christophe Leroy
---
drivers/soc/fsl/qe/qmc.c | 28
1 file
In order to support runtime timeslot route changes, enable the
channel timeslot entries at channel start() and disable them at
channel stop().
Signed-off-by: Herve Codina
Reviewed-by: Christophe Leroy
---
drivers/soc/fsl/qe/qmc.c | 175 ---
1 file changed,
In order to support runtime timeslot route changes, some operations will
be different according the routing table used (common Rx and Tx table or
one table for Rx and one for Tx).
The is_tsa_64rxtx flag is introduced to avoid extra computation to
determine the table format each time we need it.
The Tx and Rx entries for a given channel are set in one function.
In order to modify Rx entries and Tx entries independently of one other,
split this function in one for the Rx part and one for the Tx part.
Signed-off-by: Herve Codina
Reviewed-by: Christophe Leroy
---
In order to allow runtime timeslot route changes, disabling channel TSA
entries needs to be supported.
Add support for this new feature.
Signed-off-by: Herve Codina
Reviewed-by: Christophe Leroy
---
drivers/soc/fsl/qe/qmc.c | 20 +++-
1 file changed, 11 insertions(+), 9
The timeslots checked in qmc_check_chans() are the timeslots used.
With the introduction of the available timeslots, the used timeslots
are a subset of the available timeslots. The timeslots checked during
the qmc_check_chans() call should be the available ones.
Simply update and check the
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