A blog for kernel development

A blog for kernel development

[Amit Kumar]

Hi,
I have started this mail thread to interact with other kernel
learners. I am also running a blog for stuff related to Linux kernel
development.
https://blog.freeark1.tv
When a new post will appear on this blog I'll mail it on this thread.
Soon I'll start posting about kernel development.

Regards,
Amit Kumar

_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

Re: A blog for kernel development

[Thomas Piekarski]

Hello Amit,


thanks for letting us know about your new blog. Some time ago I also 
dived into Kernel Development, but except a lot of sandboxing [1] I did 
not get around to write about it.

I'll take a closer look at your blog.

What are your itch to get into Kernel Development? At what subsystem 
you're going to get started? I once looked more into proc, debugfs and 
statfs, two subsystems to get a more gentle start so to speak (at least 
that's what I hope).


Maybe we can learn from another and strengthen our learning endeavor to 
flatten the learning curve :-)


Links:

[1]: Linux Kernel Module (LKM) Sandbox,
      https://github.com/tpiekarski/lkm-sandbox


On 05.03.22 4:25 AM, Amit Kumar wrote:
> Hi,
> I have started this mail thread to interact with other kernel
> learners. I am also running a blog for stuff related to Linux kernel
> development.
> https://blog.freeark1.tv
> When a new post will appear on this blog I'll mail it on this thread.
> Soon I'll start posting about kernel development.
> 
> Regards,
> Amit Kumar
> 


_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

Re: A blog for kernel development

[Amit Kumar]

On Sun, Mar 6, 2022 at 3:04 AM Thomas Piekarski
<t.piekarski@deloquencia.de> wrote:
>
> Hello Amit,
>
>
> thanks for letting us know about your new blog. Some time ago I also
> dived into Kernel Development, but except a lot of sandboxing [1] I did
> not get around to write about it.
>
> I'll take a closer look at your blog.
>
> What are your itch to get into Kernel Development? At what subsystem
I want to develop robots in the future.
> you're going to get started? I once looked more into proc, debugfs and
> statfs, two subsystems to get a more gentle start so to speak (at least
> that's what I hope).
>As far as I understand there are several things that play role in LKD.
>
> Maybe we can learn from another and strengthen our learning endeavor to
> flatten the learning curve :-)
>This is why I have started writing a blog. I have visited your GitHub repo. I will give it a shot.
>
> Links:
>
> [1]: Linux Kernel Module (LKM) Sandbox,
>       https://github.com/tpiekarski/lkm-sandbox
>
>
> On 05.03.22 4:25 AM, Amit Kumar wrote:
> > Hi,
> > I have started this mail thread to interact with other kernel
> > learners. I am also running a blog for stuff related to Linux kernel
> > development.
> > https://blog.freeark1.tv
> > When a new post will appear on this blog I'll mail it on this thread.
> > Soon I'll start posting about kernel development.
> >
> > Regards,
> > Amit Kumar
> >
>
>
> _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies@kernelnewbies.org
> https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

_______________________________________________
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Kernelnewbies@kernelnewbies.org
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Re: A blog for kernel development

[Amit Kumar]

Hi,

https://blog.freeark1.tv/2022/03/a-blog-for-linux-kernel-development.html

I am thinking of sharing everything which will lead a normal
application developer to become a Linux kernel developer. This will be
just my journey journal to become a Linux kernel developer. Please,
feel free to share your views so that I can serve the purpose.

Regards,
Amit Kumar

On Sat, Mar 5, 2022 at 8:55 AM Amit Kumar <free.amit.kumar@gmail.com> wrote:
>
> Hi,
> I have started this mail thread to interact with other kernel
> learners. I am also running a blog for stuff related to Linux kernel
> development.
> https://blog.freeark1.tv
> When a new post will appear on this blog I'll mail it on this thread.
> Soon I'll start posting about kernel development.
>
> Regards,
> Amit Kumar

_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

Re: A blog for kernel development

[Ozgur Kara]

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_______________________________________________
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Re: A blog for kernel development

[Amit Kumar]

Hi,
Your mail is very inspirational.
My aspiration of becoming a Linux kernel developer is very old.
https://lore.kernel.org/all/1482241064-7504-1-git-send-email-free.amit.kumar@gmail.com/
I used to be a Java developer. Due to my personal problems, I have
been distracted for a long time from my career.
Now, I am back in my career and decided to give a try again to my
aspirations. I want to create such a blog that lead a newbie step by
step in becoming a Linux kernel developer.
So if Linux is written entirely in C and C programs everytime take
main function right, okay where is main function of kernel?
A kernel runs in a freestanding environment i.e. there is no libc
available. In other words, kernel runs on the bare metal, we use
assembly language and linker script to set up everything on our own.
https://elixir.bootlin.com/linux/v5.17-rc7/source/init/main.c#L927
Last but not least, Robotics is on my radar.

Regards,
Amit Kumar


On Thu, Mar 10, 2022 at 7:38 AM Ozgur Kara <ozgur@goosey.org> wrote:
>
>
>
> 10.03.2022, 04:30, "Amit Kumar" <free.amit.kumar@gmail.com>:
>
> Hi,
>
>
> Hello,
>
> maybe if you want to be a kernel developer you should go to some reference sources before that.
>
> Really Important: The C Programming Language
>
> 1. Understanding Linux Kernel (I/O and Process Management
> 2. Understanding Memory Addressing
> 3. Understanding Processes
> 4. Understanding Intterupts
> 5. Understanding Timing and Clock
> 6. Kernel Address Space
> 7. Kernel Namespaces
> 8. System Calls
> 9. Signals
>
> A) Linux Device Drivers
>
> 1. Module
> 2. Communication
> 3. Buffer Character and Blocks
> 4. Pooling
> 5. User Space and Kernel Space
> 6. Learn Linux kernel header file
>
> B) Kernel Internals
>
> 1. Boot Loader (Booting)
> 2. Virtual File Systems
> 3. Caching and Paging
> 4. Task Structure
> 5. Scheduler
> 6. Queue
> 7. File Structure
> 8. IPC
> 9. Synronization
> 10. Data Types in the kernel
> 11. PCI and USB
> 12. DMA
>
> so as soon as you know these you are already in an active kernel developer mode but you probably have to be very interested in hardware. So the Linux kernel is not just software and almost all developers strive for hardware compatibility.
>
> Operating System standards (POSIX) are already largely complete on Linux and you can bid and join workgroups for porting a new software solution for example a new filesystem.
>
> Regardless of your hardware knowledge and C knowledg will be declared you a "developer" and for example i dont even know most of them and i have been using Linux for many years and sometimes i even heard words when my C skills were not enough they fired me from there :)
>
> but don't be discouraged by it, its good keyword:
>
> "Just For Fun"
>
> yes, do everything to be fun and learn. Now download a linux kernel, unzip it and examine source codes.
> Check out inside Documents and then open kernel menu and play with some changes and try to compile.
>
> if you dont get an error, boot and run from new kernel and test. in this case, learn bootloader, initramfs and actuall real kernel file where is it and what is size for example?
>
> An example question:
>
> So if Linux is written entirely in C and C programs everytime take main function right, okay where is main function of kernel? :)
>
> Good Luck and always include your research on these in your blog.
> Regards
>
> zgur
>
>
> https://blog.freeark1.tv/2022/03/a-blog-for-linux-kernel-development.html
>
> I am thinking of sharing everything which will lead a normal
> application developer to become a Linux kernel developer. This will be
> just my journey journal to become a Linux kernel developer. Please,
> feel free to share your views so that I can serve the purpose.
>
> Regards,
> Amit Kumar
>
> On Sat, Mar 5, 2022 at 8:55 AM Amit Kumar <free.amit.kumar@gmail.com> wrote:
>
>
>  Hi,
>  I have started this mail thread to interact with other kernel
>  learners. I am also running a blog for stuff related to Linux kernel
>  development.
>  https://blog.freeark1.tv
>  When a new post will appear on this blog I'll mail it on this thread.
>  Soon I'll start posting about kernel development.
>
>  Regards,
>  Amit Kumar

_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

Re: A blog for kernel development

[Amit Kumar]

Hi,
https://blog.freeark1.tv/2022/03/our-friend-printf.html
I've added an email subscription to my blog, so please subscribe.

Regards,
Amit Kumar

On Sat, Mar 5, 2022 at 8:55 AM Amit Kumar <free.amit.kumar@gmail.com> wrote:
>
> Hi,
> I have started this mail thread to interact with other kernel
> learners. I am also running a blog for stuff related to Linux kernel
> development.
> https://blog.freeark1.tv
> When a new post will appear on this blog I'll mail it on this thread.
> Soon I'll start posting about kernel development.
>
> Regards,
> Amit Kumar

_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

Re: A blog for kernel development

[Torin Carey]

Hi Amit,

On Thu, Mar 10, 2022 at 10:01:40PM +0530, Amit Kumar wrote:
> https://blog.freeark1.tv/2022/03/our-friend-printf.html

Nice blog!  Just to let you know, there's a difference between
development on Linux and Linux kernel development.
Wikipedia has a pretty good general article on kernels:
https://en.wikipedia.org/wiki/Kernel_(operating_system)

We're mostly interested in the development, concepts, inner-workings and
usage of the Linux kernel.  While what happens in userspace is relevant,
we mostly concentrate on the kernel itself.

Ozgur Kara <ozgur@goosey.org> gave a really good list of topics torelating
to kernel development.  I'd also really recommend reading
https://github.com/0xAX/linux-insides/blob/master/SUMMARY.md

A pretty good place to start kernel development is by writing kernel
modules.  https://lwn.net/Kernel/LDD3/ is a good place to start, but
some of the stuff is a bit outdated given it's over 10 years old, but
you should be able to write some stuff with it.

Torin


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Re: A blog for kernel development

[Amit Kumar]

Hi,
Thank you for your replies.
I am just laying the foundation. After a couple of weeks, I will start
posing about the Linux kernel on my blog.
I am also planning to give online Linux kernel training after some
time. This might be free.
So, keep in touch.

Regards,
Amit Kumar

On Thu, Mar 10, 2022 at 10:47 PM Rogério Valentim Feitoza da Silva
<rogerio.silva3920@gmail.com> wrote:
>
> On Thursday, 10 March 2022, Amit Kumar <free.amit.kumar@gmail.com> wrote:
>>
>> Hi,
>> Your mail is very inspirational.
>> My aspiration of becoming a Linux kernel developer is very old.
>> https://lore.kernel.org/all/1482241064-7504-1-git-send-email-free.amit.kumar@gmail.com/
>> I used to be a Java developer. Due to my personal problems, I have
>> been distracted for a long time from my career.
>> Now, I am back in my career and decided to give a try again to my
>> aspirations. I want to create such a blog that lead a newbie step by
>> step in becoming a Linux kernel developer.
>> So if Linux is written entirely in C and C programs everytime take
>> main function right, okay where is main function of kernel?
>> A kernel runs in a freestanding environment i.e. there is no libc
>> available. In other words, kernel runs on the bare metal, we use
>> assembly language and linker script to set up everything on our own.
>> https://elixir.bootlin.com/linux/v5.17-rc7/source/init/main.c#L927
>> Last but not least, Robotics is on my radar.
>>
>> Regards,
>> Amit Kumar
>>
>>
>> On Thu, Mar 10, 2022 at 7:38 AM Ozgur Kara <ozgur@goosey.org> wrote:
>> >
>> >
>> >
>> > 10.03.2022, 04:30, "Amit Kumar" <free.amit.kumar@gmail.com>:
>> >
>> > Hi,
>> >
>> >
>> > Hello,
>> >
>> > maybe if you want to be a kernel developer you should go to some reference sources before that.
>> >
>> > Really Important: The C Programming Language
>> >
>> > 1. Understanding Linux Kernel (I/O and Process Management
>> > 2. Understanding Memory Addressing
>> > 3. Understanding Processes
>> > 4. Understanding Intterupts
>> > 5. Understanding Timing and Clock
>> > 6. Kernel Address Space
>> > 7. Kernel Namespaces
>> > 8. System Calls
>> > 9. Signals
>> >
>> > A) Linux Device Drivers
>> >
>> > 1. Module
>> > 2. Communication
>> > 3. Buffer Character and Blocks
>> > 4. Pooling
>> > 5. User Space and Kernel Space
>> > 6. Learn Linux kernel header file
>> >
>> > B) Kernel Internals
>> >
>> > 1. Boot Loader (Booting)
>> > 2. Virtual File Systems
>> > 3. Caching and Paging
>> > 4. Task Structure
>> > 5. Scheduler
>> > 6. Queue
>> > 7. File Structure
>> > 8. IPC
>> > 9. Synronization
>> > 10. Data Types in the kernel
>> > 11. PCI and USB
>> > 12. DMA
>> >
>> > so as soon as you know these you are already in an active kernel developer mode but you probably have to be very interested in hardware. So the Linux kernel is not just software and almost all developers strive for hardware compatibility.
>> >
>> > Operating System standards (POSIX) are already largely complete on Linux and you can bid and join workgroups for porting a new software solution for example a new filesystem.
>> >
>> > Regardless of your hardware knowledge and C knowledg will be declared you a "developer" and for example i dont even know most of them and i have been using Linux for many years and sometimes i even heard words when my C skills were not enough they fired me from there :)
>> >
>> > but don't be discouraged by it, its good keyword:
>> >
>> > "Just For Fun"
>> >
>> > yes, do everything to be fun and learn. Now download a linux kernel, unzip it and examine source codes.
>> > Check out inside Documents and then open kernel menu and play with some changes and try to compile.
>> >
>> > if you dont get an error, boot and run from new kernel and test. in this case, learn bootloader, initramfs and actuall real kernel file where is it and what is size for example?
>> >
>> > An example question:
>> >
>> > So if Linux is written entirely in C and C programs everytime take main function right, okay where is main function of kernel? :)
>> >
>> > Good Luck and always include your research on these in your blog.
>> > Regards
>> >
>> > zgur
>> >
>> >
>> > https://blog.freeark1.tv/2022/03/a-blog-for-linux-kernel-development.html
>> >
>> > I am thinking of sharing everything which will lead a normal
>> > application developer to become a Linux kernel developer. This will be
>> > just my journey journal to become a Linux kernel developer. Please,
>> > feel free to share your views so that I can serve the purpose.
>> >
>> > Regards,
>> > Amit Kumar
>> >
>> > On Sat, Mar 5, 2022 at 8:55 AM Amit Kumar <free.amit.kumar@gmail.com> wrote:
>> >
>> >
>> >  Hi,
>> >  I have started this mail thread to interact with other kernel
>> >  learners. I am also running a blog for stuff related to Linux kernel
>> >  development.
>> >  https://blog.freeark1.tv
>> >  When a new post will appear on this blog I'll mail it on this thread.
>> >  Soon I'll start posting about kernel development.
>> >
>> >  Regards,
>> >  Amit Kumar
>>
>> _______________________________________________
>> Kernelnewbies mailing list
>> Kernelnewbies@kernelnewbies.org
>> https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>
> Userspace applications also run on bare metal, but they run on user mode (in x86 that's ring 3) and need the kernel's system call interface (in x86 that's the 129th CPU interrupt, called using "int 0x80" or "int 128", and in ARM, the SWI instruction is used) to do kernel-only tasks such as file I/O, process management and networking.

_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

Re: A blog for kernel development

[John A]

[-- Attachment #1.1: Type: text/plain, Size: 6002 bytes --]

Where's the web address?

V/r,
John

aronetics.com
We Speak IT®

--mobile--
________________________________
From: Amit Kumar <free.amit.kumar@gmail.com>
Sent: Thursday, March 10, 2022 8:15 PM
To: Rogério Valentim Feitoza da Silva; Kernel Newbies; torin@tcarey.uk
Subject: Re: A blog for kernel development

Hi,
Thank you for your replies.
I am just laying the foundation. After a couple of weeks, I will start
posing about the Linux kernel on my blog.
I am also planning to give online Linux kernel training after some
time. This might be free.
So, keep in touch.
Regards,
Amit Kumar
On Thu, Mar 10, 2022 at 10:47 PM Rogério Valentim Feitoza da Silva
<rogerio.silva3920@gmail.com> wrote:
>
> On Thursday, 10 March 2022, Amit Kumar <free.amit.kumar@gmail.com> wrote:
>>
>> Hi,
>> Your mail is very inspirational.
>> My aspiration of becoming a Linux kernel developer is very old.
>> https://lore.kernel.org/all/1482241064-7504-1-git-send-email-free.amit.kumar@gmail.com/
>> I used to be a Java developer. Due to my personal problems, I have
>> been distracted for a long time from my career.
>> Now, I am back in my career and decided to give a try again to my
>> aspirations. I want to create such a blog that lead a newbie step by
>> step in becoming a Linux kernel developer.
>> So if Linux is written entirely in C and C programs everytime take
>> main function right, okay where is main function of kernel?
>> A kernel runs in a freestanding environment i.e. there is no libc
>> available. In other words, kernel runs on the bare metal, we use
>> assembly language and linker script to set up everything on our own.
>> https://elixir.bootlin.com/linux/v5.17-rc7/source/init/main.c#L927
>> Last but not least, Robotics is on my radar.
>>
>> Regards,
>> Amit Kumar
>>
>>
>> On Thu, Mar 10, 2022 at 7:38 AM Ozgur Kara <ozgur@goosey.org> wrote:
>> >
>> >
>> >
>> > 10.03.2022, 04:30, "Amit Kumar" <free.amit.kumar@gmail.com>:
>> >
>> > Hi,
>> >
>> >
>> > Hello,
>> >
>> > maybe if you want to be a kernel developer you should go to some reference sources before that.
>> >
>> > Really Important: The C Programming Language
>> >
>> > 1. Understanding Linux Kernel (I/O and Process Management
>> > 2. Understanding Memory Addressing
>> > 3. Understanding Processes
>> > 4. Understanding Intterupts
>> > 5. Understanding Timing and Clock
>> > 6. Kernel Address Space
>> > 7. Kernel Namespaces
>> > 8. System Calls
>> > 9. Signals
>> >
>> > A) Linux Device Drivers
>> >
>> > 1. Module
>> > 2. Communication
>> > 3. Buffer Character and Blocks
>> > 4. Pooling
>> > 5. User Space and Kernel Space
>> > 6. Learn Linux kernel header file
>> >
>> > B) Kernel Internals
>> >
>> > 1. Boot Loader (Booting)
>> > 2. Virtual File Systems
>> > 3. Caching and Paging
>> > 4. Task Structure
>> > 5. Scheduler
>> > 6. Queue
>> > 7. File Structure
>> > 8. IPC
>> > 9. Synronization
>> > 10. Data Types in the kernel
>> > 11. PCI and USB
>> > 12. DMA
>> >
>> > so as soon as you know these you are already in an active kernel developer mode but you probably have to be very interested in hardware. So the Linux kernel is not just software and almost all developers strive for hardware compatibility.
>> >
>> > Operating System standards (POSIX) are already largely complete on Linux and you can bid and join workgroups for porting a new software solution for example a new filesystem.
>> >
>> > Regardless of your hardware knowledge and C knowledg will be declared you a "developer" and for example i dont even know most of them and i have been using Linux for many years and sometimes i even heard words when my C skills were not enough they fired me from there :)
>> >
>> > but don't be discouraged by it, its good keyword:
>> >
>> > "Just For Fun"
>> >
>> > yes, do everything to be fun and learn. Now download a linux kernel, unzip it and examine source codes.
>> > Check out inside Documents and then open kernel menu and play with some changes and try to compile.
>> >
>> > if you dont get an error, boot and run from new kernel and test. in this case, learn bootloader, initramfs and actuall real kernel file where is it and what is size for example?
>> >
>> > An example question:
>> >
>> > So if Linux is written entirely in C and C programs everytime take main function right, okay where is main function of kernel? :)
>> >
>> > Good Luck and always include your research on these in your blog.
>> > Regards
>> >
>> > zgur
>> >
>> >
>> > https://blog.freeark1.tv/2022/03/a-blog-for-linux-kernel-development.html
>> >
>> > I am thinking of sharing everything which will lead a normal
>> > application developer to become a Linux kernel developer. This will be
>> > just my journey journal to become a Linux kernel developer. Please,
>> > feel free to share your views so that I can serve the purpose.
>> >
>> > Regards,
>> > Amit Kumar
>> >
>> > On Sat, Mar 5, 2022 at 8:55 AM Amit Kumar <free.amit.kumar@gmail.com> wrote:
>> >
>> >
>> >  Hi,
>> >  I have started this mail thread to interact with other kernel
>> >  learners. I am also running a blog for stuff related to Linux kernel
>> >  development.
>> >  https://blog.freeark1.tv
>> >  When a new post will appear on this blog I'll mail it on this thread.
>> >  Soon I'll start posting about kernel development.
>> >
>> >  Regards,
>> >  Amit Kumar
>>
>> _______________________________________________
>> Kernelnewbies mailing list
>> Kernelnewbies@kernelnewbies.org
>> https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>
> Userspace applications also run on bare metal, but they run on user mode (in x86 that's ring 3) and need the kernel's system call interface (in x86 that's the 129th CPU interrupt, called using "int 0x80" or "int 128", and in ARM, the SWI instruction is used) to do kernel-only tasks such as file I/O, process management and networking.
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

[-- Attachment #1.2: Type: text/html, Size: 9142 bytes --]

[-- Attachment #2: Type: text/plain, Size: 170 bytes --]

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Re: A blog for kernel development

[Amit Kumar]

On Fri, Mar 11, 2022 at 6:59 AM John A <john@aronetics.com> wrote:
>
> Where's the web address?
Are you asking about my blog address?
It's https://blog.freeark1.tv

Thank you for your interest.

>
> V/r,
> John
>
> aronetics.com
> We Speak IT®
>
> --mobile--
> ________________________________
> From: Amit Kumar <free.amit.kumar@gmail.com>
> Sent: Thursday, March 10, 2022 8:15 PM
> To: Rogério Valentim Feitoza da Silva; Kernel Newbies; torin@tcarey.uk
> Subject: Re: A blog for kernel development
>
> Hi,
> Thank you for your replies.
> I am just laying the foundation. After a couple of weeks, I will start
> posing about the Linux kernel on my blog.
> I am also planning to give online Linux kernel training after some
> time. This might be free.
> So, keep in touch.
> Regards,
> Amit Kumar
> On Thu, Mar 10, 2022 at 10:47 PM Rogério Valentim Feitoza da Silva
> <rogerio.silva3920@gmail.com> wrote:
> >
> > On Thursday, 10 March 2022, Amit Kumar <free.amit.kumar@gmail.com> wrote:
> >>
> >> Hi,
> >> Your mail is very inspirational.
> >> My aspiration of becoming a Linux kernel developer is very old.
> >> https://lore.kernel.org/all/1482241064-7504-1-git-send-email-free.amit.kumar@gmail.com/
> >> I used to be a Java developer. Due to my personal problems, I have
> >> been distracted for a long time from my career.
> >> Now, I am back in my career and decided to give a try again to my
> >> aspirations. I want to create such a blog that lead a newbie step by
> >> step in becoming a Linux kernel developer.
> >> So if Linux is written entirely in C and C programs everytime take
> >> main function right, okay where is main function of kernel?
> >> A kernel runs in a freestanding environment i.e. there is no libc
> >> available. In other words, kernel runs on the bare metal, we use
> >> assembly language and linker script to set up everything on our own.
> >> https://elixir.bootlin.com/linux/v5.17-rc7/source/init/main.c#L927
> >> Last but not least, Robotics is on my radar.
> >>
> >> Regards,
> >> Amit Kumar
> >>
> >>
> >> On Thu, Mar 10, 2022 at 7:38 AM Ozgur Kara <ozgur@goosey.org> wrote:
> >> >
> >> >
> >> >
> >> > 10.03.2022, 04:30, "Amit Kumar" <free.amit.kumar@gmail.com>:
> >> >
> >> > Hi,
> >> >
> >> >
> >> > Hello,
> >> >
> >> > maybe if you want to be a kernel developer you should go to some reference sources before that.
> >> >
> >> > Really Important: The C Programming Language
> >> >
> >> > 1. Understanding Linux Kernel (I/O and Process Management
> >> > 2. Understanding Memory Addressing
> >> > 3. Understanding Processes
> >> > 4. Understanding Intterupts
> >> > 5. Understanding Timing and Clock
> >> > 6. Kernel Address Space
> >> > 7. Kernel Namespaces
> >> > 8. System Calls
> >> > 9. Signals
> >> >
> >> > A) Linux Device Drivers
> >> >
> >> > 1. Module
> >> > 2. Communication
> >> > 3. Buffer Character and Blocks
> >> > 4. Pooling
> >> > 5. User Space and Kernel Space
> >> > 6. Learn Linux kernel header file
> >> >
> >> > B) Kernel Internals
> >> >
> >> > 1. Boot Loader (Booting)
> >> > 2. Virtual File Systems
> >> > 3. Caching and Paging
> >> > 4. Task Structure
> >> > 5. Scheduler
> >> > 6. Queue
> >> > 7. File Structure
> >> > 8. IPC
> >> > 9. Synronization
> >> > 10. Data Types in the kernel
> >> > 11. PCI and USB
> >> > 12. DMA
> >> >
> >> > so as soon as you know these you are already in an active kernel developer mode but you probably have to be very interested in hardware. So the Linux kernel is not just software and almost all developers strive for hardware compatibility.
> >> >
> >> > Operating System standards (POSIX) are already largely complete on Linux and you can bid and join workgroups for porting a new software solution for example a new filesystem.
> >> >
> >> > Regardless of your hardware knowledge and C knowledg will be declared you a "developer" and for example i dont even know most of them and i have been using Linux for many years and sometimes i even heard words when my C skills were not enough they fired me from there :)
> >> >
> >> > but don't be discouraged by it, its good keyword:
> >> >
> >> > "Just For Fun"
> >> >
> >> > yes, do everything to be fun and learn. Now download a linux kernel, unzip it and examine source codes.
> >> > Check out inside Documents and then open kernel menu and play with some changes and try to compile.
> >> >
> >> > if you dont get an error, boot and run from new kernel and test. in this case, learn bootloader, initramfs and actuall real kernel file where is it and what is size for example?
> >> >
> >> > An example question:
> >> >
> >> > So if Linux is written entirely in C and C programs everytime take main function right, okay where is main function of kernel? :)
> >> >
> >> > Good Luck and always include your research on these in your blog.
> >> > Regards
> >> >
> >> > zgur
> >> >
> >> >
> >> > https://blog.freeark1.tv/2022/03/a-blog-for-linux-kernel-development.html
> >> >
> >> > I am thinking of sharing everything which will lead a normal
> >> > application developer to become a Linux kernel developer. This will be
> >> > just my journey journal to become a Linux kernel developer. Please,
> >> > feel free to share your views so that I can serve the purpose.
> >> >
> >> > Regards,
> >> > Amit Kumar
> >> >
> >> > On Sat, Mar 5, 2022 at 8:55 AM Amit Kumar <free.amit.kumar@gmail.com> wrote:
> >> >
> >> >
> >> >  Hi,
> >> >  I have started this mail thread to interact with other kernel
> >> >  learners. I am also running a blog for stuff related to Linux kernel
> >> >  development.
> >> >  https://blog.freeark1.tv
> >> >  When a new post will appear on this blog I'll mail it on this thread.
> >> >  Soon I'll start posting about kernel development.
> >> >
> >> >  Regards,
> >> >  Amit Kumar
> >>
> >> _______________________________________________
> >> Kernelnewbies mailing list
> >> Kernelnewbies@kernelnewbies.org
> >> https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
> >
> > Userspace applications also run on bare metal, but they run on user mode (in x86 that's ring 3) and need the kernel's system call interface (in x86 that's the 129th CPU interrupt, called using "int 0x80" or "int 128", and in ARM, the SWI instruction is used) to do kernel-only tasks such as file I/O, process management and networking.
> _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies@kernelnewbies.org
> https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

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Re: A blog for kernel development

[FMDF]

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On Thu, 10 Mar 2022, 18:13 Torin Carey, <torin@tcarey.uk> wrote:

> Hi Amit,
>
> On Thu, Mar 10, 2022 at 10:01:40PM +0530, Amit Kumar wrote:
> > https://blog.freeark1.tv/2022/03/our-friend-printf.html
>
> Nice blog!  Just to let you know, there's a difference between
> development on Linux and Linux kernel development.
> Wikipedia has a pretty good general article on kernels:
> https://en.wikipedia.org/wiki/Kernel_(operating_system)


The above-mentioned article is about operating system's kernels. There's
another one specifically devoted to the Linux kernel:

https://en.wikipedia.org/wiki/Linux_kernel

Regards,

Fabio  M. De Francesco

We're mostly interested in the development, concepts, inner-workings and
> usage of the Linux kernel.  While what happens in userspace is relevant,
> we mostly concentrate on the kernel itself.
>
> Ozgur Kara <ozgur@goosey.org> gave a really good list of topics torelating
> to kernel development.  I'd also really recommend reading
> https://github.com/0xAX/linux-insides/blob/master/SUMMARY.md
>
> A pretty good place to start kernel development is by writing kernel
> modules.  https://lwn.net/Kernel/LDD3/ is a good place to start, but
> some of the stuff is a bit outdated given it's over 10 years old, but
> you should be able to write some stuff with it.
>
> Torin
>

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Re: A blog for kernel development

[Robert P. J. Day]

On Fri, 11 Mar 2022, Amit Kumar wrote:

> Hi,

> Thank you for your replies. I am just laying the foundation. After a
> couple of weeks, I will start posing about the Linux kernel on my
> blog. I am also planning to give online Linux kernel training after
> some time. This might be free. So, keep in touch.
>
> Regards,
> Amit Kumar

  with all due respect, you've been posting about your promises to
start learning linux kernel development and write about it for many
months now, and while you've produced nothing in terms of actual blog
content, you continue to recommend that people follow you and check
out your blog and so on.

  from back in july of last year
(https://www.spinics.net/lists/newbies/msg63239.html), you wrote:

  "Hi All,

  I am just here to inform that I am trying to learn Linux kernel
  development. If someone wants to follow me, so that he may also
  learn with me."

so it's been nine months now, and there is no indication that you have
written or learned *anything* about linux kernel programming, yet you
continue to encourage members of this list to keep visiting your blog,
and you even suggest that you might offer online linux kernel
training, despite no indication that you know the slightest thing
about it.

  it's great that someone wants to get into LKP, and that should
always be encouraged, but what you're doing seems little more than
shameless self-promotion.

rday

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Re: A blog for kernel development

[Amit Kumar]

Hi,
Dear friends, I might resume my blog by May 01. Unfortunately, I'm
unable to serve the Linux community due to my involvement in several
lawsuits regarding my property in India.
I'm also planning to form a company in the Caribbean.

I wished for the success of Linux more than one and a half-decade ago.
And now I am happy to see its success.
  Happy Linux, Happy user.

Regards,
Amit Kumar

On Fri, Mar 11, 2022 at 7:51 PM Robert P. J. Day <rpjday@crashcourse.ca> wrote:
>
> On Fri, 11 Mar 2022, Amit Kumar wrote:
>
> > Hi,
>
> > Thank you for your replies. I am just laying the foundation. After a
> > couple of weeks, I will start posing about the Linux kernel on my
> > blog. I am also planning to give online Linux kernel training after
> > some time. This might be free. So, keep in touch.
> >
> > Regards,
> > Amit Kumar
>
>   with all due respect, you've been posting about your promises to
> start learning linux kernel development and write about it for many
> months now, and while you've produced nothing in terms of actual blog
> content, you continue to recommend that people follow you and check
> out your blog and so on.
>
>   from back in july of last year
> (https://www.spinics.net/lists/newbies/msg63239.html), you wrote:
>
>   "Hi All,
>
>   I am just here to inform that I am trying to learn Linux kernel
>   development. If someone wants to follow me, so that he may also
>   learn with me."
>
> so it's been nine months now, and there is no indication that you have
> written or learned *anything* about linux kernel programming, yet you
> continue to encourage members of this list to keep visiting your blog,
> and you even suggest that you might offer online linux kernel
> training, despite no indication that you know the slightest thing
> about it.
>
>   it's great that someone wants to get into LKP, and that should
> always be encouraged, but what you're doing seems little more than
> shameless self-promotion.
>
> rday

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