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63-499: The S5 Mini uses an almost identical variant of the S5's polycarbonate perforated faux-leather hardware design. Internally, it features a quad-core 1.4 GHz Exynos 3 Quad 3470 (for the SM-G800F, SM-G800M and SM-G800Y) or an equally-clocked Qualcomm Snapdragon 400 MSM8228 (for SM-G800A, SM-G800H and SM-G800R4) processor with 1.5  GB of RAM (of which approximately 277 MB is reserved for

126-846: A WARN letter with the Texas Workforce Commission , notifying of upcoming layoffs of their SARC CPU team and termination of their custom CPU core development. SARC and ACL will still continue development of custom SoC, AI, and GPU. On 3 June 2019, AMD and Samsung announced a multi-year strategic partnership in mobile graphics IP based on AMD Radeon GPU IP. NotebookCheck reported that Samsung are targeting 2021 for their first SoC with AMD Radeon GPU IP. However, AnandTech reported 2022. In August 2019, during AMD's Q2 2019 earnings call, AMD stated that Samsung plans to launch SoCs with AMD graphics IP in roughly two years. The first SoC to use Radeon GPU were Exynos 2200, introduced in January 2022, with

189-420: A terminal driver . On 25 August 1991, Torvalds posted the following to comp.os.minix , a newsgroup on Usenet : I'm doing a (free) operating system (just a hobby, won't be big and professional like gnu) for 386(486) AT clones. This has been brewing since April, and is starting to get ready. I'd like any feedback on things people like/dislike in minix, as my OS resembles it somewhat (same physical layout of

252-451: A version control system thus far, in 2002, Linux developers adopted BitKeeper , which was made freely available to them even though it was not free software . In 2005, because of efforts to reverse-engineer it, the company which owned the software revoked its support of the Linux community. In response, Torvalds and others wrote Git . The new system was written within weeks, and in two months

315-507: A "30 percent lower power-level over the previous process generation". On 30 November 2011, Samsung released information about their upcoming SoC with a dual-core ARM Cortex-A15 CPU, which was initially named "Exynos 5250" and was later renamed to Exynos 5 Dual. This SoC has a memory interface providing 12.8 GB/s of memory bandwidth, support for USB 3.0 and SATA 3 , can decode full 1080p video at 60 fps along with simultaneously displaying WQXGA -resolution (2560 × 1600) on

378-568: A Linux Kernel Code of Conflict was introduced on 8 March 2015. It was replaced on 16 September 2018 by a new Code of Conduct based on the Contributor Covenant . This coincided with a public apology by Torvalds and a brief break from kernel development. On 30 November 2018, complying with the Code of Conduct , Jarkko Sakkinen of Intel sent out patches replacing instances of "fuck" appearing in source code comments with suitable versions focused on

441-441: A bit in that more features were made available throughout the series, including support for Bluetooth , Logical Volume Manager (LVM) version 1, RAID support, InterMezzo and ext3 file systems. Version 2.6.0 was released on 17 December 2003. The development for 2.6. x changed further towards including new features throughout the series. Among the changes that have been made in the 2.6 series are: integration of μClinux into

504-415: A custom Xclipse 920 based on AMD's RDNA 2 microarchitecture. In June 2021, Samsung hired engineers from AMD and Apple to form a new custom architecture team. In October 2021, Google released their Pixel 6 series of phones based on Google's Tensor SoC , which was made in collaboration with Samsung. In 2024, Samsung officially announced Exynos 2400, with RDNA 3 microarchitecture-based Xclipse 940. In

567-524: A mobile display as well as 1080p over HDMI. This SoC was used in some Chromebooks from 2013. Samsung Exynos 5 Dual has been used in a 2015 prototype supercomputer, while the end-product will use a chip meant for servers from another vendor. On 26 April 2012, Samsung released the Exynos 4 Quad, which powers the Samsung Galaxy S III and Samsung Galaxy Note II . The Exynos 4 Quad SoC uses 20% less power than

630-566: A revised SoC manufactured on their first 7nm manufacturing process named 7LPE. Exynos 9825 came equipped with Samsung Galaxy Note10 series and Samsung Galaxy F62 /M62. In 2020, Samsung released last Mongoose-based SoC, named Exynos 990. Exynos 990 came with their fifth-generation custom core (Exynos M5) codenamed Lion. However, M5 showed less performance and worst power efficiency against Cortex-A77 of Snapdragon 865. On 1 October 2019, rumors emerged that Samsung had laid off their custom CPU core teams at SARC. On 1 November 2019, Samsung filed

693-483: A roadmap, there are technical guidelines. Instead of a central resource allocation, there are persons and companies who all have a stake in the further development of the Linux kernel, quite independently from one another: People like Linus Torvalds and I don’t plan the kernel evolution. We don’t sit there and think up the roadmap for the next two years, then assign resources to the various new features. That's because we don’t have any resources. The resources are all owned by

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756-506: A study issued by the Linux Foundation, covering the commits for the releases 4.8 to 4.13, about 1500 developers were contributing from about 200–250 companies on average. The top 30 developers contributed a little more than 16% of the code. For companies, the top contributors are Intel (13.1%) and Red Hat (7.2%), Linaro (5.6%), IBM (4.1%), the second and fifth places are held by the 'none' (8.2%) and 'unknown' (4.1%) categories. Instead of

819-835: A three-year design cycle, SARC's first custom CPU core called the M1 was released in the Exynos 8890 in 2016. In 2017 the San Jose Advanced Computing Lab (ACL) was opened to continue custom GPU IP development. In the same year, Samsung announced Exynos M2, a minor revision of Exynos M1. In Hot Chips 2018, Samsung announced a new custom core named Exynos M3, codenamed Meerkat. M3 has widened decoder width from 4-wide to 6-wide, and introduced L3 cache structure. Also, it achieved over 50% IPC increase versus Exynos M1 and M2. SPEC2006 benchmark result showed that it has performance advantage comparing with counterparts of Snapdragon 845 (Cortex-A75) at their respective peak clock speed, and by lowering

882-491: Is a monolithic kernel rather than a microkernel was the topic of a debate between Andrew S. Tanenbaum , the creator of MINIX, and Torvalds. The Tanenbaum–Torvalds debate started in 1992 on the Usenet group comp.os.minix as a general discussion about kernel architectures. Version 0.95 was the first capable of running the X Window System . In March 1994, Linux 1.0.0 was released with 176,250 lines of code. As indicated by

945-438: Is a series of ARM -based system-on-chips developed by Samsung Electronics ' System LSI division and manufactured by Samsung Foundry . It is a continuation of Samsung's earlier S3C, S5L and S5P line of SoCs . The first debut of Samsung's indigenously developed SoC is Samsung Hummingbird (S5PC110/111), later renamed as Exynos 3 Single 3110. Samsung announce it on July 27, 2009. In 2011, Samsung announced Exynos 4 Dual 4210 that

1008-541: Is significantly responsible for rising use of Linux overall. The cost to redevelop version 2.6.0 of the Linux kernel in a traditional proprietary development setting has been estimated to be US$ 612 million (€467M, £394M) in 2004 prices using the COCOMO person-month estimation model. In 2006, a study funded by the European Union put the redevelopment cost of kernel version 2.6.8 higher, at €882M ($ 1.14bn, £744M). This topic

1071-594: The Native POSIX Thread Library (NPTL), User-mode Linux integration into the mainline kernel sources, SELinux integration into the mainline kernel sources, InfiniBand support, and considerably more. Starting with 2.6.x releases, the kernel supported a large number of file systems; some designed for Linux, like ext3 , ext4 , FUSE , Btrfs , and others native to other operating systems like JFS , XFS , Minix, Xenix , Irix , Solaris , System V , Windows and MS-DOS . Though development had not used

1134-1058: The atomic CMPXCHG instruction introduced with the i486 to allow reliable mutexes —making the 3.7 kernel series the last one still supporting the original processor. The same series unified support for the ARM processor. The numbering change from 2.6.39 to 3.0, and from 3.19 to 4.0, involved no meaningful technical differentiation; the major version number was increased simply to avoid large minor numbers. Stable 3.x.y kernels were released until 3.19 in February 2015. Version 3.11, released on 2 September 2013, added many new features such as new O_TMPFILE flag for open(2) to reduce temporary file vulnerabilities, experimental AMD Radeon dynamic power management, low-latency network polling, and zswap (compressed swap cache). In April 2015, Torvalds released kernel version 4.0. By February 2015, Linux had received contributions from nearly 12,000 programmers from more than 1,200 companies, including some of

1197-511: The "core," including architecture-specific code, kernel code, and mm code, while 60% is drivers. Contributions are submitted as patches, in the form of text messages on the Linux kernel mailing list (LKML) (and often also on other mailing lists dedicated to particular subsystems). The patches must conform to a set of rules and to a formal language that, among other things, describes which lines of code are to be deleted and what others are to be added to

1260-568: The "ftp.funet.fi" – FTP server of the Finnish University and Research Network ( FUNET ). It was not even executable since its code still needed Minix to compile and test it. On 5 October 1991, Torvalds announced the first "official" version of Linux, version 0.02. [As] I mentioned a month ago, I'm working on a free version of a Minix-lookalike for AT-386 computers. It has finally reached the stage where it's even usable (though may not be depending on what you want), and I am willing to put out

1323-737: The AMD Radeon FreeSync and NVIDIA Xavier display, fixes for F2FS , EXT4 and XFS , restored support for swap files on the Btrfs file system and continued work on the Intel Icelake Gen11 graphics and on the NXP i.MX8 SoCs. This release was noticeably larger than the rest, Torvalds mentioning that "The overall changes for all of the 5.0 release are much bigger." A total of 1,991 developers, of whom 334 were first-time collaborators, added more than 553,000 lines of code to version 5.8, breaking

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1386-420: The European Union. As of 7 March 2011 , using then-current LOC (lines of code) of a 2.6.x Linux kernel and wage numbers with David A. Wheeler's calculations it would cost approximately $ 3bn (about €2.2bn) to redevelop the Linux kernel as it keeps getting bigger. An updated calculation as of 26 September 2018 , using then-current 20,088,609 LOC (lines of code) for the 4.14.14 Linux kernel and

1449-461: The Exynos 4210 was made available in the Linux kernel and support was added in version 3.2 in November 2011. On 29 September 2011, Samsung introduced Exynos 4212 as a successor to the 4210; it features a higher clock frequency and "50 percent higher 3D graphics performance over the previous processor generation". Built with a 32 nm high-κ metal gate (HKMG) low-power process; it promises

1512-543: The Galaxy A50, A50s, A51, M30s, M21, M31, M31s, F41 and Galaxy M21 (2021). Although the issue went unreported on mainstream media and very few YouTube reviewers covered it based on user reports, the issues were widely documented on Samsung Members official community forum as well as Reddit & other forums. The impact was significant with hundreds of user posts & comments between 2020 and 2023. Samsung did free board replacements for some early customers who had

1575-681: The Galaxy S5 requires to be covered by a flap to ensure water protection. Below the screen are three buttons. The physical "Home" button in the centre contains a swipe-based fingerprint reader . The "Recent apps" (or Recent Tasks ) and "Back" buttons are capacitive. Like the Galaxy S5 , the Galaxy S5 mini no longer has a "Menu" key like its predecessors. It has been replaced with the Recent tasks key. The Galaxy S5 Mini comes with Android 4.4.2 KitKat and Samsung's TouchWiz software which includes almost all of

1638-467: The Hummingbird S5PC110 (now Exynos 3 Single) in its Samsung Galaxy S smartphone, which featured a licensed ARM Cortex-A8 CPU . This ARM Cortex-A8 was code-named Hummingbird. It was developed in partnership with Intrinsity using their FastCore and Fast14 technology . In early 2011, Samsung first launched the Exynos 4210 SoC in its Samsung Galaxy S II mobile smartphone . The driver code for

1701-540: The Linux 2.2.13 code for the support of the S/390 architecture. Version 2.4.0, released on 4 January 2001, contained support for ISA Plug and Play , USB , and PC Cards . Linux 2.4 added support for the Pentium 4 and Itanium (the latter introduced the ia64 ISA that was jointly developed by Intel and Hewlett-Packard to supersede the older PA-RISC ), and for the newer 64-bit MIPS processor. Development for 2.4. x changed

1764-736: The Linux kernel for its OS. Torvalds labeled the kernel with major version 0 to indicate that it was not yet intended for general use. Version 0.11, released in December 1991, was the first version to be self-hosted ; compiled on a computer running the Linux kernel. When Torvalds released version 0.12 in February 1992, he adopted the GNU General Public License version 2 (GPLv2) over his previous self-drafted license, which had not permitted commercial redistribution. In contrast to Unix , all source files of Linux are freely available, including device drivers . The initial success of Linux

1827-827: The SoC in Samsung Galaxy S II. Samsung also changed the name of several SoCs, Exynos 3110 to Exynos 3 Single, Exynos 4210 and 4212 to Exynos 4 Dual 45 nm, and Exynos 4 Dual 32 nm and Exynos 5250 to Exynos 5 Dual. On 2010 Samsung founded a design center in Austin called Samsung's Austin R&;D Center (SARC). Samsung has hired many ex-AMD, ex-Intel, ex-ARM and various other industry veterans. The SARC develop high-performance, low-power, complex CPU and System IP (Coherent Interconnect and memory controller) architectures and designs. In 2012, Samsung began development of GPU IP called "S-GPU". After

1890-456: The change will either be submitted as a single patch or in multiple patches of source code . In case of a single subsystem that is maintained by a single maintainer, these patches are sent as e-mails to the maintainer of the subsystem with the appropriate mailing list in Cc. The maintainer and the readers of the mailing list will review the patches and provide feedback. Once the review process has finished

1953-667: The clock speed to 1.79 GHz it matched the power efficiency versus Cortex-A75 of Snapdragon 845. However, Samsung Galaxy S9 with Exynos 9810 was criticized in early period of their release due to the poor CPU core scheduler settings. In 2019, Samsung revealed Exynos 9820 with fourth-generation custom core named Exynos M4 (Cheetah). It has been manufactured on Samsung 8nm LPP process. Unlike the past flagship Exynos series with 4+4 dual-cluster settings, Exynos 9820 implemented 2+2+4 core cluster configurations. Benchmark result presented that Exynos 9820 had performance parity but worse efficiency over Snapdragon 855. Later, Samsung announced Exynos 9825,

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2016-413: The current US national average programmer salary of $ 75,506 show that it would cost approximately $ 14,725,449,000 (£11,191,341,000) to rewrite the existing code. Most who use Linux do so via a Linux distribution . Some distributions ship the vanilla or stable kernel. However, several vendors (such as Red Hat and Debian ) maintain a customized source tree. These are usually updated at a slower pace than

2079-532: The entire OS runs in kernel space . Linux is provided under the GNU General Public License version 2 , although it contains files under other compatible licenses . In April 1991, Linus Torvalds, a 21-year-old computer science student at the University of Helsinki started working on an operating system, inspired by UNIX, for a personal computer. He started with a task switcher in Intel 80386 assembly language and

2142-620: The features of the S5. The S5 Mini contains a 2100 mAh, NFC-enabled battery. Its software, like the S5, also contains an "Ultra Power Saving" mode to further extend battery life; when enabled, all non-essential processes are disabled, and the screen switches to only rendering in white on black. Additional power efficiency features include R2 Semiconductor's envelope tracking to improve power amplifier efficiency thereby decreasing heat and increasing battery life. Exynos (system on chip) The Samsung Exynos (stylized as SΛMSUNG Exynos ), formerly Hummingbird ( Korean :  엑시노스 ),

2205-530: The file-system (due to practical reasons) among other things). I've currently ported bash (1.08) and gcc (1.40), and things seem to work. This implies that I'll get something practical within a few months [...] Yes - it's free of any minix code, and it has a multi-threaded fs. It is NOT protable [ sic ] (uses 386 task switching etc), and it probably never will support anything other than AT-harddisks, as that's all I have :-(. On 17 September 1991, Torvalds prepared version 0.01 of Linux and put on

2268-416: The first official kernel made using it was released. In 2005 the stable team was formed as a response to the lack of a kernel tree where people could work on bug fixes , and it would keep updating stable versions. In February 2008 the linux-next tree was created to serve as a place where patches aimed to be merged during the next development cycle gathered. Several subsystem maintainers also adopted

2331-545: The flagship lineup of Samsung Exynos 9 series, until Exynos 990. From 2021 onwards, Exynos M6 and M7 microarchitecture developments have been cancelled and instead Samsung adopts ARM Cortex-X core series as the primary core. In 2022, Samsung started adoption of AMD RDNA GPU microarchitecture into their SoC, beginning on Exynos 2200 with Xclipse 920, which used customized "mobile RDNA" based on RDNA 2 . In 2024, Samsung expanded AMD RDNA 3-based GPU into their midrange chips, since Exynos 1480 (Xclipse 530). In 2010, Samsung launched

2394-482: The kernel code is written in C as supported by the GNU compiler collection (GCC) which has extensions beyond standard C. The code also contains assembly code for architecture-specific logic such as optimizing memory use and task execution. The kernel has a modular design such that modules can be integrated as software components – including dynamically loaded. The kernel is monolithic in an architectural sense since

2457-581: The kernel community at the 2017 Embedded Linux Conference Europe. The issues brought up were discussed a few days later at the Maintainers Summit. Concerns over the lack of consistency in how maintainers responded to patches submitted by developers were echoed by Shuah Khan , the maintainer of the kernel self-test framework. Torvalds contended that there would never be consistency in the handling of patches because different kernel subsystems have, over time, adopted different development processes. Therefore, it

2520-570: The kernel so that old programs would work. Version 3.0 was released on 22 July 2011. On 30 May 2011, Torvalds announced that the big change was "NOTHING. Absolutely nothing." and asked, "...let's make sure we really make the next release not just an all new shiny number, but a good kernel too." After the expected 6–7 weeks of the development process, it would be released near the 20th anniversary of Linux. On 11 December 2012, Torvalds decided to reduce kernel complexity by removing support for i386 processors—specifically by not having to emulate

2583-406: The kernel with system software (e.g., the GNU C Library , systemd , and other Unix utilities and daemons ) and a wide selection of application software , but their usage share in desktops is low in comparison to other operating systems. Since Android , which is Linux, accounts for the majority of mobile device operating systems, and due to its rising use in embedded devices , Android

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2646-467: The linux.conf.au (LCA) conference in 2018, developers expressed the view that the culture of the community has gotten much better in the past few years. Daniel Vetter, the maintainer of the Intel drm/i915 graphics kernel driver, commented that the "rather violent language and discussion" in the kernel community has decreased or disappeared. Laurent Pinchart asked developers for feedback on their experiences with

2709-537: The mainline kernel sources, PAE support, support for several new lines of CPUs , integration of Advanced Linux Sound Architecture (ALSA) into the mainline kernel sources, support for up to 2 users (up from 2 ), support for up to 2 process IDs (64-bit only, 32-bit architectures still limited to 2 ), substantially increased the number of device types and the number of devices of each type, improved 64-bit support, support for file systems which support file sizes of up to 16 terabytes , in-kernel preemption , support for

2772-446: The phone in warranty. However, the majority of people faced the issue after the 12 month warranty period, mostly starting 1.5 - 3 years after purchase. Samsung never officially acknowledged the issue and no software update was released to solve the problem, although the phones received the promised minimum 4 year security updates. The only official solution available to customers was to purchase replacement board that cost around 60-70% of

2835-464: The phone's cost. Most users resorted to risky yet cheaper 3rd party repair that required re-soldering (also called reballing ) the CPU & RAM PoP (Package on Package) which managed to solve issue according to dozens of user reports on said forums. Linux kernel The Linux kernel is a free and open source , UNIX-like kernel that is used in many computer systems worldwide. The kernel

2898-536: The previous kernel version. The Git kernel source tree names all developers who have contributed to the Linux kernel in the Credits directory and all subsystem maintainers are listed in Maintainers . As with many large open-source software projects, developers are required to adhere to the Contributor Covenant , a code of conduct intended to address harassment of minority contributors. Additionally, to prevent offense

2961-525: The record previously held by version 4.9. According to the Stack Overflow's annual Developer Survey of 2019, more than the 53% of all respondents have developed software for Linux and about 27% for Android , although only about 25% develop with Linux-based operating systems. Most websites run on Linux-based operating systems , and all of the world's 500 most powerful supercomputers use some form of OS based on Linux. Linux distributions bundle

3024-1528: The same year, along with Exynos 2400, Samsung released Exynos 1480, with RDNA 3 based Xclipse 530, marking the end of ARM's Mali GPU era in their mid-range processors. Starting in 2020 Samsung introduced a new series of Exynos SoCs with lower numbers than in the past. This indicates a cut between the past Exynos SoCs at least in naming. 2 MB System Cache (26 TOPs) 1352 MHz LTE Cat 9 (450 Mbit/s) 50 Mbit/s (UL) 50 Mbit/s (UL) 2CA 100 Mbit/s (UL) Cat.13 2CA 150 Mbit/s (UL) 2CA 50 Mbit/s (UL) Cat.13 2CA 150 Mbit/s (UL) DL: LTE Cat 12 600 Mbit/s, 3CA UL: LTE Cat 13 150 Mbit/s, 2CA DL: LTE Cat 16 1050 Mbit/s, 5CA, 256-QAM) UL: LTE Cat 13 150 Mbit/s, 2CA, 64-QAM Cat.13 2CA 150 Mbit/s (UL) DL: LTE Cat 18 1200 Mbit/s, 6CA, 256-QAM UL: LTE Cat 13 200 Mbit/s, 2CA, 256-QAM 1024 MAC units @ 933 MHz (1.86 TOPs) DL: Cat.20 2000 Mbit/s, 8CA, 256-QAM UL: Cat.13 316 Mbit/s, 3CA, 256-QAM Exynos Modem 303 Exynos Modem 333 Exynos Modem 5100 Exynos Modem 5123 Exynos Modem 5300 Exynos Modem 5400 Exynos i T200 Exynos i S111 The Exynos Auto V9 comes with additional features such as: The Exynos Auto V920 comes with additional features such as: Some of Samsung's phone models released between 2019 - 2021 that used Exynos 9611 processor were widely reported by customers having random restarts, freezing and boot-loops. Specific phone models include

3087-562: The sources for wider distribution. It is just version 0.02...but I've successfully run bash, gcc, gnu-make, gnu-sed, compress, etc. under it. Linux grew rapidly as many developers, including the MINIX community, contributed to the project. At the time, the GNU Project had completed many components for its free UNIX replacement, the GNU OS , but its kernel, GNU Hurd , was incomplete. The project adopted

3150-437: The specified files. These patches can be automatically processed so that system administrators can apply them in order to make just some changes to the code or to incrementally upgrade to the next version. Linux is distributed also in GNU zip (gzip) and bzip2 formats. A developer who wants to change the Linux kernel writes and tests a code change. Depending on how significant the change is and how many subsystems it modifies,

3213-407: The subsystem maintainer accepts the patches in the relevant Git kernel tree. If the changes to the Linux kernel are bug fixes that are considered important enough, a pull request for the patches will be sent to Torvalds within a few days. Otherwise, a pull request will be sent to Torvalds during the next merge window. The merge window usually lasts two weeks and starts immediately after the release of

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3276-503: The suffix -next for trees containing code which they mean to submit for inclusion in the next release cycle. As of January 2014 , the in-development version of Linux is held in an unstable branch named linux-next . The 20th anniversary of Linux was celebrated by Torvalds in July 2011 with the release of version 3.0.0. As 2.6 had been the version number for 8 years, a new uname26 personality that reports 3.x as 2.6.40+x had to be added to

3339-467: The system), 16 GB of expandable storage, and a 4.5 inch (1280x720 pixel) HD Super AMOLED screen with a pixel density of 326 PPI. The S5 Mini also includes a 2.1- megapixel front-facing camera, and an 8-megapixel rear-facing camera with 1080p video recording at 30 frames per second. The device is claimed to be water resistant despite the exposed USB charging port, while the USB charging port of

3402-407: The vanilla branch, and they usually include all fixes from the relevant stable branch, but at the same time they can also add support for drivers or features which had not been released in the vanilla version the distribution vendor started basing its branch from. The community of Linux kernel developers comprises about 5000–6000 members. According to the "2017 State of Linux Kernel Development",

3465-444: The various corporations who use and contribute to Linux, as well as by the various independent contributors out there. It's those people who own the resources who decide... Notable conflicts among Linux kernel developers: Prominent Linux kernel developers have been aware of the importance of avoiding conflicts between developers. For a long time there was no code of conduct for kernel developers due to opposition by Torvalds. However,

3528-949: The version number, it was the first version considered suitable for a production environment . In June 1996, after release 1.3, Torvalds decided that Linux had evolved enough to warrant a new major number, and so labeled the next release as version 2.0.0. Significant features of 2.0 included symmetric multiprocessing (SMP), support for more processors types and support for selecting specific hardware targets and for enabling architecture-specific features and optimizations. The make *config family of commands of kbuild enable and configure options for building ad hoc kernel executables ( vmlinux ) and loadable modules. Version 2.2, released on 20 January 1999, improved locking granularity and SMP management, added m68k , PowerPC , Sparc64 , Alpha , and other 64-bit platforms support. Furthermore, it added new file systems including Microsoft 's NTFS read-only capability. In 1999, IBM published its patches to

3591-654: The word 'hug'. Developers who feel treated unfairly can report this to the Linux Foundation Technical Advisory Board. In July 2013, the maintainer of the USB 3.0 driver Sage Sharp asked Torvalds to address the abusive commentary in the kernel development community. In 2014, Sharp backed out of Linux kernel development, saying that "The focus on technical excellence, in combination with overloaded maintainers, and people with different cultural and social norms, means that Linux kernel maintainers are often blunt, rude, or brutal to get their job done". At

3654-563: The world's largest software and hardware vendors. Version 4.1 of Linux, released in June 2015, contains over 19.5 million lines of code contributed by almost 14,000 programmers. Linus Torvalds announced that kernel version 4.22 would instead be numbered 5.0 in March 2019, stating that "'5.0' doesn't mean anything more than that the 4.x numbers started getting big enough that I ran out of fingers and toes." It featured many major additions such as support for

3717-445: Was agreed upon that each kernel subsystem maintainer would document the rules for patch acceptance. Linux is evolution, not intelligent design ! The kernel source code, a.k.a. source tree, is managed in the Git version control system – also created by Torvalds. As of 2021 , the 5.11 release of the Linux kernel had around 30.34 million lines of code. Roughly 14% of the code is part of

3780-401: Was created by Linus Torvalds in 1991 and was soon adopted as the kernel for the GNU operating system (OS) which was created to be a free replacement for Unix . Since the late 1990s, it has been included in many operating system distributions , many of which are called Linux . One such Linux kernel operating system is Android which is used in many mobile and embedded devices. Most of

3843-487: Was driven by programmers and testers across the world. With the support of the POSIX APIs, through the libC that, whether needed, acts as an entry point to the kernel address space, Linux could run software and applications that had been developed for Unix. On 19 January 1992, the first post to the new newsgroup alt.os.linux was submitted. On 31 March 1992, the newsgroup was renamed comp.os.linux . The fact that Linux

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3906-420: Was later equipped on Samsung Galaxy S II . Since then, Samsung has used Exynos as a representative brand name of their SoC, based on ARM Cortex cores. In 2017, Samsung launched their proprietary ARM ISA-based customized core designs, codenamed "Exynos M". Exynos M series core made a debut with Exynos M1 nicknamed "Mongoose", which was used for Exynos 8 Octa 8890. The Exynos M-series have been implemented throughout

3969-559: Was revisited in October 2008 by Amanda McPherson, Brian Proffitt, and Ron Hale-Evans. Using David A. Wheeler's methodology, they estimated redevelopment of the 2.6.25 kernel now costs $ 1.3bn (part of a total $ 10.8bn to redevelop Fedora 9). Again, Garcia-Garcia and Alonso de Magdaleno from University of Oviedo (Spain) estimate that the value annually added to kernel was about €100M between 2005 and 2007 and €225M in 2008, it would cost also more than €1bn (about $ 1.4bn as of February 2010) to develop in

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