Re: Submitted patch, what to do next
On 07.03.2018 17:28, Alex Arvelaez wrote: > Hello, > > I sent a small patch to the LKML. I sent it to one of the mantainers > (as per get_mantainers.pl) and I CC-ed linux-ker...@vger.kernel.org. imho you should send it to all e-mails given by get_maintainers > I'm not entirely sure I did everything properly and I was wondering > how long does it usually take to get any feedback? It's been a couple > weeks since I sent it. > > Any advice is appreciated, thanks! Best regards, Kamil ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: How to verify linux-next
On 29.09.2017 17:45, valdis.kletni...@vt.edu wrote: > On Fri, 29 Sep 2017 19:56:41 +0530, Pintu Kumar said: > >> 1) If you have pointers on how to setup ssh/net connection on QEMU >> with busybox, do let me know. > > Busybox doesn't do that as far as I know, as it's intended as a single-user > /sbin/init replacement. You'll need a full-featured userspace with an actual > init daemon (sysvinit, systemd, etc) and an ssh daemon (openssh, or if you > want [...] What about /usr/bin/ssh as init replacement ? -- Best regards, Kamil Konieczny Samsung R Institute Poland ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: Don't know where to start linux kernel programming
Hi, On 22.08.2017 12:52, SUNIL KHORWAL wrote: > I'm new to linux kernel programming, I want to be a linux kernel hacker but > i don't know where to start. > Please help me. Start from https://kernelnewbies.org/ https://lwn.net/ https://www.kernel.org/ You are using gmail, so this may help: linux/Documentation/process/email-clients.rst or http://elixir.free-electrons.com/linux/v4.13-rc6/source/Documentation/process http://elixir.free-electrons.com/linux/v4.13-rc6/source/Documentation/process/email-clients.rst There is eudyptula challange (currently busy, no new subscriptions) and there is note about [not] using gmail for kernel: https://events.linuxfoundation.org/sites/events/files/slides/ec.pdf -- Best regards, Kamil Konieczny Samsung R Institute Poland ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: version number of Linux kernel development
Hi, On 01.08.2017 06:35, Yubin Ruan wrote: > Hi, > [...] > > So, in this example, 4.2.7 would be thrown away after 4.4.0 is released. Is > this the same for every major release? [...] see also https://www.kernel.org/category/releases.html -- Best regards, Kamil Konieczny Samsung R Institute Poland ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: version number of Linux kernel development
On 01.08.2017 06:35, Yubin Ruan wrote: > Hi, > I got a question regarding to Linux's version number. [...] > So, in this example, 4.2.7 would be thrown away after 4.4.0 is released. Is > this the same for every major release? > > I see a series of 4.4.x release, ranging from 4.4.1 ~ 4.4.49, at > http://elixir.free-electrons.com/linux/latest/source > which really confused me. Accoding to the model above, there should be only > 4.4.7. After that, it would 4.5.x. Look at https://www.kernel.org/ there are "longterm" branches, they are developed until EOL (end-of-life) for example, there is now 4.4.79 branch as i see this, some branches are selected to be "longterm", and they get the same set patches -- Best regards, Kamil Konieczny Samsung R Institute Poland ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: Need help to understand Linux kernel source versioning systems
On 24.07.2017 14:56, vibnwis wrote: > Being a newbie, I encountered the following scenarios when tracing > build_kernel.sh script from eewiki. Would someone help me to understand why > please? From my experience, I would to summarize the following scenario. > > 1. First, source is cloned from > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git and > checked for release version, "v4.10.17". Obviously it has no kernel tag of > "v4.10.17", but "v4.10" [...] You should stick to longterm or current branch, see https://www.kernel.org/ note that stable can be End-of-Life = EOL stable: 4.12.3 2017-07-21 stable: 4.11.12 [EOL] 2017-07-21 longterm: 4.9.39 2017-07-21 Best regards, Kamil ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: GRUB always enters a rescue shell.
On 22.07.2017 19:35, Aruna Hewapathirane wrote: [...] >>> sudo losetup -o $((2048*512)) /dev/loop1 hd.img >> >> should'nt it be 63*512 ? >> > > nope should be 2048 and this is why --> > https://superuser.com/questions/352572/why-does-the-partition-start-on-sector-2048-instead-of-63 it is for new hard disks, here it conflicts with geometry used: >>>> fdisk -u -C100 -S63 -H16 hd.img and maybe conflicts with Bochs BIOS options or disk geometry options ? -- Best regards, Kamil Konieczny Samsung R Institute Poland ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: GRUB always enters a rescue shell.
Hi, On 13.07.2017 10:39, Hao Lee wrote: > I encounter a problem when making a bootable disk image because GRUB > always enters a > rescue shell. > > I want to create a disk image and install GRUB 2 on it and then use > Bochs to run it. The steps are as follows. > [...] > Bochs BIOS - build: 02/16/17 > ata0 master: Generic 1234 ATA-6 Hard-Disk ( 49 MBytes) > Press F12 for boot menu. > Booting from Hard Disk... > . > error: no such device: c5b2c483-70c2-4212-840b-da5f965d0555. > error: unknown filesystem. > Entering rescue mode... > grub rescue> > [...] Looks like that blkid 'c5b2c483...' is not valid for your boot device, see command: blkid also: lsblk or search with google: grub2 without uuid or discover what uuid your partition will have (or assign it) or turn to some grub2 guru/forum for help or it may be problem with disk configuration, like loop1 is using linear mode, and bochs uses incompatible one (? i am not sure here) then bios geometry is mixing up sectors sequence or in step 3: > sudo losetup -o $((2048*512)) /dev/loop1 hd.img should'nt it be 63*512 ? Regards, Kamil Konieczny ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: How to alloc_pages from a given physical memory?
On 06.07.2017 15:43, kipade wrote: > Might be? I have no puzzle of CMem。 OK, I will continue go search solutions > for that. > And, if I got it, I will come back for sharing solutions here. > And, thank you, all Are you writing kernel module ? or you try to compile kernel with cmem module ? What hardware are you using ? How are you allocating shmem ? Can you give few code lines for what you try ? The more info you give, more help you receive. Well, it may be faster to go directly to some kernel list or vendor list with your questions. >> On 06.07.2017 12:20, kipade wrote: >> >>> [...] (I have a look at> the kerrnel source, every omap_bo_object [...] >> >>> [...] I use arm 32bit cpu, with kernel 3.14 >> >>> Here I want to allocate a block of shared memory from a given physical >>> address, such as 0x9000, 6M. [...] >> >> it is well beyond newbie, you may find help on vendor forum, >> i guess it is TI (Texas Instruments) Sitara SoC, >> google search gives first hit: >> >> http://processors.wiki.ti.com/index.php/CMEM_Overview -- Best regards, Kamil Konieczny Samsung R Institute Poland ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: How to alloc_pages from a given physical memory?
On 06.07.2017 12:20, kipade wrote: > [...] (I have a look at> the kerrnel source, every omap_bo_object [...] > [...] I use arm 32bit cpu, with kernel 3.14 > Here I want to allocate a block of shared memory from a given physical > address, such as 0x9000, 6M. [...] it is well beyond newbie, you may find help on vendor forum, i guess it is TI (Texas Instruments) Sitara SoC, google search gives first hit: http://processors.wiki.ti.com/index.php/CMEM_Overview -- Best regards, Kamil Konieczny Samsung R Institute Poland ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: How to alloc_pages from a given physical memory?
On 06.07.2017 11:43, kipade wrote: > In fact, I want to allocate a continous of pages from a given physical > address for a shm object in > > shmem_file_setup, might i should write a customized shmem_file_setup2 > for this? > I use arm 32bit cpu, with kernel 3.14 why do want this specific address 0x9000 ? can it be 0x4000 ? or 0x5000 ? or 0x6888 ? is this 0x9000 located in hardware registers ? some memory regions are not accessible directly for allocation, because they are used for communication with hardware SoC, and so they are used by kernel drivers or directly by kernel kernel driver may or may not expose that memory region for user space, but this is driver work maybe you should ask on platform forum, you did not answer my question on what platform you are working >>>> On 06.07.2017 05:08, kipade wrote: >>>>> Here I want to allocate a block of shared memory from a given physical >>>>> address, such as 0x9000, 6M. However, alloc_pages can't fit this >>>>> point. I had reserved enugh pages via cmem, there also have enough >>>>> continous pages for such allocation anywhere else. What should I do? -- Best regards, Kamil Konieczny Samsung R Institute Poland ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: How to alloc_pages from a given physical memory?
On 06.07.2017 11:04, kipade wrote: > I use arm 32bit cpu, with kernel 3.14 banana-pi ? nano-pi ? orange-pi ? odroid ? Is it memory region for system registers ? >> On 06.07.2017 05:08, kipade wrote: >>> Here I want to allocate a block of shared memory from a given physical >>> address, such as 0x9000, 6M. However, alloc_pages can't fit this >>> point. I had reserved enugh pages via cmem, there also have enough >>> continous pages for such allocation anywhere else. What should I do? -- Best regards, Kamil Konieczny Samsung R Institute Poland ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: How to alloc_pages from a given physical memory?
On 06.07.2017 05:08, kipade wrote: > Here I want to allocate a block of shared memory from a given physical > address, such as 0x9000, 6M. However, alloc_pages can't fit this > point. I had reserved enugh pages via cmem, there also have enough > continous pages for such allocation anywhere else. What should I do? On what platform are you working ? I think this is platfrom depended. -- Best regards, Kamil Konieczny Samsung R Institute Poland ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: building af_packet as a kernel module
Hi, On 30.06.2017 06:06, Kevin Wilson wrote: > [...] > I am using Ubuntu 16.04. > > After reboot, the af_packet.ko kernel module is loaded: > lsmod > af_packet 45056 2 > > But I cannot remove it: > rmmod af_packet > rmmod: ERROR: Module af_packet is in use > > I want to be able to rmmod it, for adding debug printing, etc. > [...] I googled this: https://stackoverflow.com/questions/448999/is-there-a-way-to-figure-out-what-is-using-a-linux-kernel-module and short answer is to use 'lsof' command (ls open files), if lsmod fails to give ref info -- Best regards, Kamil Konieczny Samsung R Institute Poland ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: building af_packet as a kernel module
On 03.07.2017 16:02, Aruna Hewapathirane wrote: > [...] > enable internet by running : /sbin/ifconfig etho0 down sudo /sbin/ifconfig eno1 up or eth0 or whatever your system names its ethernet devices > [...] List net interfaces with: sudo /sbin/ifconfig -- Best regards, Kamil Konieczny Samsung R Institute Poland ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: Struct sk_buff_head
Hi, On 06/07/2017 09:36 PM, wiktoria.lewicka wrote: > I read code from file include/linux/skbuff.h and I have question about > sk_buff_head structure. > [...] > Is this union replace sk_buff_head structure? > I didn`t found any field in sk_buff, which may use sk_buff_head, [...] As I can see it, sk_buff can be on double-linked list, and then it is linked by next and prev, or it is referenced by red-black tree, rb_node, depending of some network logic (packet type ?) Both are used by functions operating on structures. -- Best regards, Kamil Konieczny Samsung R Institute Poland ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
