Hi,
For one of my requirements I need to find cpu usage or load_avg of an
individual process or thread using "for_each_process_thread(process,
thread)" where process/thread is a pointer to "task_struct".
But, currently I am not able to figure out which is the right field
from task_struct to get
On Tue, 23 Nov 2021 at 22:13, Will Drewry wrote:
>
> On Tue, Nov 23, 2021 at 4:36 AM Pintu Agarwal wrote:
> >
> > Hi,
> >
> > For rootfs dm-verity I am trying to pass dm-mod.create from our
> > bootloader but it seems not working for me.
> > So, I ne
Hi,
For rootfs dm-verity I am trying to pass dm-mod.create from our
bootloader but it seems not working for me.
So, I need some guidance on the parameters that we pass here.
The documentation also does not seem to help much.
Kernel: 4.14 (with dm-init patch backported)
Target: Arm-32 / NAND /
Hi,
On Fri, 29 Oct 2021 at 22:18, Ezequiel Garcia
wrote:
>
> On Fri, 29 Oct 2021 at 13:13, Pintu Agarwal wrote:
> >
> > Hi All,
> >
> > On Mon, 30 Aug 2021 at 21:28, Pintu Agarwal wrote:
> > >
> > > On Sun, 22 Aug 2021 at 19:51, Ezequiel Garcia
Hi All,
On Mon, 30 Aug 2021 at 21:28, Pintu Agarwal wrote:
>
> On Sun, 22 Aug 2021 at 19:51, Ezequiel Garcia
> wrote:
>
> > In other words, IMO it's best to expose the NAND through UBI
> > for both read-only and read-write access, using a single UBI device,
> >
Hi All,
On Wed, 8 Sept 2021 at 17:38, Greg KH wrote:
> > > > > No, but you can backport it easily. Back at
> > > > > http://lists.infradead.org/pipermail/openwrt-devel/2019-November/025967.html
> > > > > I provided backports of this feature to OpenWrt, for the 4.14 and 4.19
> > > > > kernels.
>
Hi,
On Mon, 6 Sept 2021 at 21:58, Pintu Agarwal wrote:
> On Tue, 31 Aug 2021 at 18:49, Pintu Agarwal wrote:
>
> > > No, but you can backport it easily. Back at
> > > http://lists.infradead.org/pipermail/openwrt-devel/2019-November/025967.html
> > > I p
Dear Thomas, Mikulas,
Need your help in root causing my dm-verity issue with squashfs.
Please see my comments inline.
On Tue, 31 Aug 2021 at 18:49, Pintu Agarwal wrote:
> > No, but you can backport it easily. Back at
> > http://lists.infradead.org/pipermail/openwrt-devel/2019-Nov
Hi,
On Tue, 31 Aug 2021 at 00:42, Thomas Petazzoni
wrote:
>
> Hello,
>
> On Mon, 30 Aug 2021 23:48:40 +0530
> Pintu Agarwal wrote:
>
> > ohh that means we already have a working reference.
> > If possible can you share the details, even 4.19 or higher wil
On Mon, 30 Aug 2021 at 22:25, Thomas Petazzoni
wrote:
>
> Hello,
>
> On Mon, 30 Aug 2021 21:55:19 +0530
> Pintu Agarwal wrote:
>
> > Sorry for coming back to this again..
> > Unfortunately, none of the options is working for us with squashfs
> > (bootlo
On Wed, 21 Jul 2021 at 22:59, Pintu Agarwal wrote:
>
> On Wed, 21 Jul 2021 at 22:40, Mikulas Patocka wrote:
>
> > > >
> > > > Try to set up dm-verity with block size 512 bytes.
> > > >
> > > > I don't know what block size does squashfs
On Sun, 22 Aug 2021 at 19:51, Ezequiel Garcia
wrote:
> In other words, IMO it's best to expose the NAND through UBI
> for both read-only and read-write access, using a single UBI device,
> and then creating UBI volumes as needed. This will allow UBI
> to spread wear leveling across the whole
On Thu, 29 Jul 2021 at 22:41, Pintu Agarwal wrote:
>
> On Thu, 29 Jul 2021 at 17:33, Ezequiel Garcia
> wrote:
> >
> > On Thu, 29 Jul 2021 at 08:45, Richard Weinberger wrote:
> > >
> > > Ezequiel,
> > >
> > > - Ursprüngliche Mai
On Thu, 29 Jul 2021 at 17:33, Ezequiel Garcia
wrote:
>
> On Thu, 29 Jul 2021 at 08:45, Richard Weinberger wrote:
> >
> > Ezequiel,
> >
> > - Ursprüngliche Mail -
> > > [snip]
> > >
> > > Ouch, so surprised that after all these years someone is doing
> > > squashfs/mtdblock
> > > instead
On Thu, 22 Jul 2021 at 02:24, Richard Weinberger wrote:
>
> - Ursprüngliche Mail -
> >> But let me advertise ubiblock a second time.
> > Sorry, I could not understand about the ubiblock request. Is it
> > possible to elaborate little more ?
> > We are already using squashfs on top of our
On Wed, 21 Jul 2021 at 22:40, Mikulas Patocka wrote:
> > >
> > > Try to set up dm-verity with block size 512 bytes.
> > >
> > > I don't know what block size does squashfs use, but if the filesystem
> > > block size is smaller than dm-verity block size, it doesn't work.
> > >
> > Okay thank you
On Tue, 20 Jul 2021 at 17:12, Mikulas Patocka wrote:
>
> Hi
>
> Try to set up dm-verity with block size 512 bytes.
>
> I don't know what block size does squashfs use, but if the filesystem
> block size is smaller than dm-verity block size, it doesn't work.
>
Okay thank you so much for this clue,
Hi,
Our ARM32 Linux embedded system consists of these:
* Linux Kernel: 4.14
* Processor: Qualcomm Arm32 Cortex-A7
* Storage: NAND 512MB
* Platform: Simple busybox
* Filesystem: UBIFS, Squashfs
* Consists of nand raw partitions, squashfs ubi volumes.
My requirement:
We wanted to use dm-verity at
On Tue, 20 Jul 2021 at 12:10, Richard Weinberger wrote:
> > Anyways, I will create a separate thread for dm-verity issue and keep
> > this thread still open for UBI image size issue.
> > We may use dm-verify for rootfs during booting, but still we need to
> > perform integrity check for other
On Mon, 19 Jul 2021 at 14:58, Richard Weinberger wrote:
>
> - Ursprüngliche Mail -
> > Von: "Pintu Agarwal"
> > An: "richard"
> > CC: "Greg KH" , "linux-kernel"
> > , "linux-mtd"
> > , "linux-f
On Fri, 16 Jul 2021 at 21:56, Richard Weinberger wrote:
> >> My requirement:
> >> To find the checksum of a real image in runtime which is flashed in an
> >> MTD partition.
> >
> > Try using the dm-verity module for ensuring that a block device really
> > is properly signed before mounting it.
Hi,
Our ARM32 Linux embedded system consists of these:
* Linux Kernel: 4.14
* Processor: Qualcomm Arm32 Cortex-A7
* Storage: NAND 512MB
* Platform: Simple busybox
* Filesystem: UBIFS, Squashfs
* Consists of nand raw partitions, squashfs ubi volumes.
My requirement:
To find the checksum of a real
On Sun, 27 Jun 2021 at 14:12, Richard Weinberger
wrote:
>
> On Thu, Jun 24, 2021 at 6:09 PM Pintu Agarwal wrote:
> > I have one basic query related to UBIFS volumes on a system with NAND
> > partition.
>
> There is no such thing as a UBIFS volume. Do you mean UBI volum
Hi,
I have one basic query related to UBIFS volumes on a system with NAND partition.
In short, how to detect a particular empty volume inside a system
partition while flashing the partition image?
Suppose I have one big system partition that consists of 4-5 ubi
volumes inside it with varying
Hi,
I have one basic query related to UBIFS volumes on a system with NAND
partition.
In short, how to detect a particular empty volume inside a system partition
while flashing the partition image?
Suppose I have one big system partition that consists of 4-5 ubi volumes
inside it with varying
On Tue, 29 Sep 2020 at 01:20, Kees Cook wrote:
> Note that I still can't explain what you're seeing. /proc/kallsyms
> shouldn't be affected by these patches -- I would expect it to either
> report the true value or 00s.
>
> > I will disable kptr_restrict and check or, I will enable
> >
On Mon, 28 Sep 2020 at 19:15, Pintu Agarwal wrote:
>
> On Sat, 26 Sep 2020 at 22:10, Kees Cook wrote:
>
> > > >> I wonder if this is an Android Common kernel?
> > > It uses the below kernel for 4.14:
> > > https://gitlab.com/quicla/kernel/msm-4.14/
On Sat, 26 Sep 2020 at 22:10, Kees Cook wrote:
> > >> I wonder if this is an Android Common kernel?
> > It uses the below kernel for 4.14:
> > https://gitlab.com/quicla/kernel/msm-4.14/-/tree/LE.UM.3.4.2.r1.5 (or
> > similar branch).
>
> Okay, so yes. And this appears to have the hashing of %p
On Sat, 26 Sep 2020 at 05:17, Kees Cook wrote:
> >
> > For a 3/1 split ARM kernel of the typical size, all kernel virtual
> > addresses start with 0xc0, and given that the kernel is located at the
> > start of the linear map, those addresses cannot change even if you
> > move the kernel around in
Hi All,
This is regarding the KASLR feature support on ARM for the kernel
version 4.9 and 4.14.
Is KASLR supported on ARM-32 Linux 4.9 and above ?
Is it dependent on CONFIG_RANDOMIZE_BASE or
/proc/sys/kernel/randomize_va_space ?
Is there any relation between these two?
Is the changing kernel
On Tue, 9 Jun 2020 at 23:06, Pintu Agarwal wrote:
>
> Hi All,
>
> I am looking for ways to wakeup any devices (from sleep) using any
> arbitrary gpio wakeup method in a generic way (either from user space
> or kernel space) that should work on any kernel version (starting f
Hi All,
I am looking for ways to wakeup any devices (from sleep) using any
arbitrary gpio wakeup method in a generic way (either from user space
or kernel space) that should work on any kernel version (starting from
4.14 onwards).
What are the options available right now ?
I wanted to experiment
On Wed, 20 May 2020 at 11:02, Valdis Klētnieks wrote:
>
> On Wed, 20 May 2020 10:26:50 +0530, Pintu Agarwal said:
> > I know it is weird to manually arrive a MemTotal from the values of meminfo.
> > But I am actually looking for general formula.
>
> You missed the poin
On Wed, 20 May 2020 at 09:31, Valdis Klētnieks wrote:
>
> On Tue, 19 May 2020 22:33:15 +0530, Pintu Agarwal said:
>
> > > Below are some data taken from a small embedded arm32 device with 512MB
> > > RAM:
> > >
> >
> > Sorry, I forgot to me
On Mon, 18 May 2020 at 23:27, Pintu Agarwal wrote:
>
> Hi,
>
> I was just trying to manually calculate the total memory available in
> a system to match up the MemTotal shown in /proc/meminfo
> I know "free -m" command will give the vary high level usage, but I
> w
Hi,
I was just trying to manually calculate the total memory available in
a system to match up the MemTotal shown in /proc/meminfo
I know "free -m" command will give the vary high level usage, but I
wanted to breakdown the MemTotal numbers to see usage in each
category.
I am looking for a common
Dear Anish,
On Thu, 5 Dec 2019 at 00:55, anish singh wrote:
>
> On Wed, Dec 4, 2019 at 1:49 AM Pintu Agarwal wrote:
> >
> > On Wed, 4 Dec 2019 at 00:28, anish singh
> > wrote:
> > >
> > > On Tue, Dec 3, 2019 at 6:12 AM Pintu Agarwal wrote:
> >
On Wed, 4 Dec 2019 at 00:28, anish singh wrote:
>
> On Tue, Dec 3, 2019 at 6:12 AM Pintu Agarwal wrote:
> >
> > Hi All,
> >
> > I have one general query.
> >
> > If an interrupt handler is NOT getting called (for one device) after
> > the syst
Hi All,
I have one general query.
If an interrupt handler is NOT getting called (for one device) after
the system resume (from snapshot image), then what could be the issue?
Note:
* The suspend worked perfectly fine.
* The runtime suspend/resume of the system is also working fine.
If anybody
Hi All,
I have one general query.
If an interrupt handler is NOT getting called (for one device) after the
system resume (from snapshot image), then what could be the issue?
Note:
* The suspend worked perfectly fine.
* The runtime suspend/resume of the system is also working fine.
If anybody
Hi,
I need one general help in analyzing difference in clock_summary rate
before and after the system resume.
I am using custom IMX7 board with 4.9 Kernel.
With this I am trying to support some functionality during suspend/resume.
I am trying to analyze clk_summary from:
# cat
On Sat, Jun 22, 2019 at 1:43 PM Pintu Agarwal wrote:
>
> On Fri, Jun 21, 2019 at 9:09 PM Fabio Estevam wrote:
> >
> > On Fri, Jun 21, 2019 at 12:13 PM Pintu Agarwal wrote:
> >
> > > Okay there is some update on the 2nd part.
> > > Now I am able to
On Fri, Jun 21, 2019 at 9:09 PM Fabio Estevam wrote:
>
> On Fri, Jun 21, 2019 at 12:13 PM Pintu Agarwal wrote:
>
> > Okay there is some update on the 2nd part.
> > Now I am able to successfully install all imx modules after the resume
> > (no hang).
> > But
On Wed, Jun 19, 2019 at 8:59 PM Pintu Agarwal wrote:
> > > This scenario is not with suspend/resume.
> > > This hang is, when we make hdmi as a loadable module (.ko) and trying
> > > to install it after resume.
> > > In this case, suspend/resume will
On Wed, Jun 19, 2019 at 9:56 PM Valdis Klētnieks
wrote:
>
> On Wed, 19 Jun 2019 20:47:34 +0530, Pintu Agarwal said:
>
> > No I mean to say, there are lots of features and customization already
> > done on this version and stabilized.
> > Upgrading again m
On Wed, Jun 19, 2019 at 8:41 PM Fabio Estevam wrote:
>
> > > Then you can test suspend/resume and see if HDMI hangs or not.
> > >
> > By this suspend/resume, you mean "suspend-to-ram" or "suspend-to-disk" ?
>
> I tested with "echo mem > /sys/power/state"
>
hmm. That's what I said. This is runtime
On Wed, Jun 19, 2019 at 8:34 PM Greg KH wrote:
>
> On Wed, Jun 19, 2019 at 07:03:39PM +0530, Pintu Agarwal wrote:
> > You can think that the version I am using right now is almost 4.9 itself.
> > Upgrading again to higher kernel version is again difficult, also
> >
On Wed, Jun 19, 2019 at 7:14 PM Fabio Estevam wrote:
>
> On Wed, Jun 19, 2019 at 10:33 AM Pintu Agarwal wrote:
>
> > You can think that the version I am using right now is almost 4.9 itself.
>
> "almost 4.9" does not help, sorry.
>
> > Upgrading again to
On Tue, Jun 18, 2019 at 8:39 PM Fabio Estevam wrote:
>
> On Tue, Jun 18, 2019 at 11:46 AM Pintu Agarwal wrote:
>
> > Thank you so much for your reply.
> > Yes, I already checked the latest mainline kernel changes until 5.2-**.
> > I see that there are many cleanup r
On Tue, Jun 18, 2019 at 7:32 PM Fabio Estevam wrote:
>
> Hi Pintu,
>
> On Mon, Jun 17, 2019 at 10:50 AM Pintu Agarwal wrote:
> >
> > Hi All,
> >
> > I am trying to implement suspend/resume functionality to to imx-hdmi driver:
> > https://git.kernel.org
Hi All,
I am trying to implement suspend/resume functionality to to imx-hdmi driver:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/drivers/gpu/drm/imx/dw_hdmi-imx.c?h=v4.9.181
So, I need some help about this.
I logged the request in imx community, but it seems they are
On Fri, Jun 14, 2019 at 1:13 AM Valdis Klētnieks
wrote:
>
> On Thu, 13 Jun 2019 13:22:12 +0530, Shyam Saini said:
>
> > from command line we use ctrl-z to stop execution of a foreground
> > process but you can program
> > SIGTSTP signal handler in your application code to do the same.
>
> Note
On Thu, Jun 13, 2019 at 8:52 PM Elias Kouskoumvekakis
wrote:
>
> On Thu, Jun 13, 2019 at 10:45 AM Pintu Agarwal wrote:
> >
> > For some reason, I want to halt/pause the execution (for some
> > specified time) of a running process/thread (at some location),
> > wi
On Thu, Jun 13, 2019 at 1:22 PM Shyam Saini wrote:
>
> Hi Pintu,
>
>
> > Hi All,
> > I was just wondering if this is possible in the Linux world.
> > My requirement is:
> > For some reason, I want to halt/pause the execution (for some
> > specified time) of a running process/thread (at some
Hi All,
I was just wondering if this is possible in the Linux world.
My requirement is:
For some reason, I want to halt/pause the execution (for some
specified time) of a running process/thread (at some location),
without modified the source, may be by firing some events/signals from
an another
Hi,
I have a Mac Book Pro with macOS High Sierra 10.13.x installed (with
Mac OS Extended (Journaled, Encrypted)).
I also have the Xcode installed so I can compile a C program using gcc.
Now, I wanted to build linux kernel code (cross compile for arm or
risc-v) on Mac OS.
I know this is possible,
On Tue, Mar 12, 2019 at 7:41 PM Suzuki K Poulose wrote:
>
>
>
> On 12/03/2019 14:02, Pintu Agarwal wrote:
> >>
> >> -netdev user,id=unet,hostfwd=tcp::-:22 \
> >> -net user \
> >>
> >> and you 'll get guest's port 22 to be forwarded
>
> -netdev user,id=unet,hostfwd=tcp::-:22 \
> -net user \
>
> and you 'll get guest's port 22 to be forwarded to hosts port , so
> you can do
>
> ssh root@localhost:
>
> from the host.
>
I tried many different options, but unfortunately none worked for me.
1)
qemu-system-arm -M
Hi,
I have a qemu-arm setup with busybox which I normally use to test my
kernel changes.
I use this command to boot it:
QEMU-ARM$
qemu-system-arm -M vexpress-a9 -m 1024M -kernel
../KERNEL/linux/arch/arm/boot/zImage -dtb
../KERNEL/linux/arch/arm/boot/dts/vexpress-v2p-ca9.dtb -initrd
rootfs.img.gz
On Fri, Feb 22, 2019 at 7:41 PM Mark Rutland wrote:
>
> On Fri, Feb 22, 2019 at 07:17:00PM +0530, Pintu Agarwal wrote:
> > Hi All,
>
> Hi,
>
> > I want to build Linux Kernel 4.20 for arm64 and use it on qemu-arm64.
> > I see that there is a defconfig availabl
Hi All,
I want to build Linux Kernel 4.20 for arm64 and use it on qemu-arm64.
I see that there is a defconfig available in arch/arm64/configs/defconfig
But I am not sure whether it will work for qemu-arm64, and by default
which machine type is supported.
I already have working setup for qemu-arm
On Fri, Jan 18, 2019 at 5:23 PM Sai Prakash Ranjan
wrote:
>
> On 1/18/2019 4:50 PM, Pintu Agarwal wrote:
> >>>> Could you please tell which QCOM SoC this board is based on?
> >>>>
> >>>
> >>> Snapdragon 845 with kernel 4.9.x
> >
> >> Could you please tell which QCOM SoC this board is based on?
> >>
> >
> > Snapdragon 845 with kernel 4.9.x
> > I want to know from which subsystem it is triggered:drivers/soc/qcom/
> >
>
> Irqchip driver is "drivers/irqchip/irq-gic-v3.c". The kernel you are
> using is msm-4.9 I suppose or
On Fri, Jan 18, 2019 at 3:54 PM Sai Prakash Ranjan
wrote:
>
> Hi Pintu-san,
>
> On 1/18/2019 3:38 PM, Pintu Agarwal wrote:
> > Hi All,
> >
> > Currently, I am trying to debug a boot up crash on some qualcomm
> > snapdragon arm64 board with kernel 4.9.
>
Hi All,
Currently, I am trying to debug a boot up crash on some qualcomm
snapdragon arm64 board with kernel 4.9.
I could find the cause of the failure, but I am unable to locate from
which subsystem/drivers this is getting triggered.
If you have any ideas or suggestions to locate the issue,
On Sat, Nov 17, 2018 at 6:36 PM Pintu Agarwal wrote:
>
> On Sat, Nov 17, 2018 at 12:02 AM wrote:
> >
> > > But my concern is that if I dump it from irq handler, I will get
> > > information only for the current cpu.
> > > How do I store and get the informa
On Sat, Nov 17, 2018 at 12:02 AM wrote:
>
> On Fri, 16 Nov 2018 23:13:48 +0530, Pintu Agarwal said:
> > On Fri, Nov 16, 2018 at 10:16 PM wrote:
>
> > > Congrats. You just re-invented DEBUG_STACK_USAGE, which just keeps a
> > > high-water mark
> > > fo
On Fri, Nov 16, 2018 at 10:16 PM wrote:
>
> On Fri, 16 Nov 2018 20:10:28 +0530, Pintu Agarwal said:
>
> > > Look at the code controlled by '#ifdef CONFIG_DEBUG_STACK_USAGE'
>
> > For example: is it possible to keep storing the irq_stack_usage (for
> > each cpu in
On Fri, Nov 16, 2018 at 5:03 PM wrote:
>
> On Fri, 16 Nov 2018 11:44:36 +0530, Pintu Agarwal said:
>
> > > If your question is "Did one
> > > of the CPUs blow out its IRQ stack (or come close to doing so)?" there's
> > > better
> > > ap
On Thu, 15 Nov 2018, 10:19 pm
> On Thu, 15 Nov 2018 18:52:39 +0530, Pintu Agarwal said:
>
> > Currently, when I tested this (as a proc interface), I got the below output:
> > CPUUNUSED-STACKACTUAL-STACK
> > 0 16368 16384
>
> &g
Hi All,
I have a requirement in printing irq stack usage information for each cpu.
I am using the following:
Linux Kernel: 4.9.x
Board: hikey620 (arm64, armv8 with 8 cores)
Platform: Ubuntu 14 debian
As a vague idea, I tried to implement like this:
On Mon, Nov 5, 2018 at 9:37 PM Austin S. Hemmelgarn
wrote:
>
> On 11/5/2018 10:58 AM, Adam Borowski wrote:
> > On Mon, Nov 05, 2018 at 08:31:46PM +0530, Pintu Agarwal wrote:
> >> Hi,
> >>
> >> I have one requirement:
> >> I wanted to have a swapfile
On Mon, Nov 5, 2018 at 9:42 PM wrote:
>
> On Mon, 05 Nov 2018 20:31:46 +0530, Pintu Agarwal said:
> > I wanted to have a swapfile (64MB to 256MB) on my system.
> > But I wanted the data to be compressed and stored on the disk in my
> > swapfile.
> > [Similar to zr
Hi,
I have one requirement:
I wanted to have a swapfile (64MB to 256MB) on my system.
But I wanted the data to be compressed and stored on the disk in my swapfile.
[Similar to zram, but compressed data should be moved to disk, instead of RAM].
Note: I wanted to optimize RAM space, so performance
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