Comments on: Device Driver : Initial Stage https://www.emblogic.com/blog/09/device-driver-initial-stage/ Embedded System and ARM Training Mon, 07 Oct 2013 04:00:03 +0000 hourly 1 http://wordpress.org/?v=3.9.1 By: spatlou https://www.emblogic.com/blog/09/device-driver-initial-stage/#comment-40 Fri, 24 Sep 2010 12:21:31 +0000 http://emblogic.org/blog/?p=113#comment-40 In the three years of active development leading up to the recent release of the new 2.6 Linux kernel, some interesting changes took place, the Linux kernel is developed and tested. The methods used to develop the Linux kernel are much the same today as they were 3 years ago. Several key changes have improved overall stability as well as quality.

]]> By: Sanjeev Khanna https://www.emblogic.com/blog/09/device-driver-initial-stage/#comment-35 Fri, 24 Sep 2010 08:14:13 +0000 http://emblogic.org/blog/?p=113#comment-35 Advantages of 2.4 over 2.6 in terms of server use.
2.4 being more tested/stable/reliable and 2.6 not being suited for ancient hardware.

]]> By: Sumit Gemini https://www.emblogic.com/blog/09/device-driver-initial-stage/#comment-30 Thu, 23 Sep 2010 09:11:34 +0000 http://emblogic.org/blog/?p=113#comment-30 The main difference in 2.4 and 2.6 is Block-Layer Change from 2.4 to 2.6 Kernel, 2.4 deals with buffer_heads (bh)s and 2.6 deals with buffer_io (bio)s.

bh deals with a single page, so a single buffer transfer through bh can be only of PAGE_SIZE (normally 4KB) size.

bio the buffer is based on the array of pages, so request can be as much big as possible through bio … Although the bh still exists in 2.6 kernel at the buffer_cache layer but not available block-layer!

]]> By: Sumit Gemini https://www.emblogic.com/blog/09/device-driver-initial-stage/#comment-28 Thu, 23 Sep 2010 08:57:17 +0000 http://emblogic.org/blog/?p=113#comment-28 hi

]]> By: harsh.e2 https://www.emblogic.com/blog/09/device-driver-initial-stage/#comment-27 Tue, 21 Sep 2010 09:05:16 +0000 http://emblogic.org/blog/?p=113#comment-27 benefit of using linux 2.6 version of kernel over 2.4 version is 1)downward compatibility of 2.6 programs.
2)2.6 version can handle more complexities than 2.4 version.

we have to study version 2.4 because Most device developers still use 2.4 version for development and therefore Majority(around 95%) of code is still written using 2.4 version of the kernel.

]]> By: Amit Gemini https://www.emblogic.com/blog/09/device-driver-initial-stage/#comment-26 Tue, 21 Sep 2010 09:03:37 +0000 http://emblogic.org/blog/?p=113#comment-26 2.4 and 2.6 are referred to the Kernel Version…

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