Chapter 7. Configuring a Linux Kernel

Processor Clocking Control Interface Driver

Processor clocking control interface driver

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As recommended by its help description, we enable this in case an application might want to use it. To support all the hardware in your system well, you first need to identify what hardware is inside your system. You will need this enabled if you want to enable swap space on your system.

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The Linux kernel help system has informed me that this helps performance on certain controllers. Use bounce buffer for simple hosts The Linux kernel help system has informed me that this helps performance on certain controllers. This allows programs to interface with the network devices immediately without going through the network protocol implementation on the Linux kernel.

The localmodconfig enables the drivers as kernel modules. Resolving the issue is easy if you know what the reason is. Building a Linux kernel can take a while, but the majority of time comes in the configuration of the kernel. By itself not a very easy thing to debug, but you'll need to get access to your system, and rebooting doesn't help as you'll get into the same situation anyhow.

Cpufreq Processor Clocking Control interface driver - Patchwork

If it doesn't, it is most likely because the kernel doesn't know the device to begin with so it can't attempt to display partitions. Recommended Linux Kernel Configurations. As this is very specific to your system, it is not possible to provide a general example that suits everybody.

That might sound terribly geekish and programmer-specific - and it is - but if you have multiple cores or processors in your system, asus p4gc mx driver it is wise to enable it. Processor Type and Features.

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This optimizes some complex initial memory allocation fragments within the Linux kernel. When you boot your system back, the Linux kernel will detect this in the swap space and load all information back into memory so you can continue where you left off. By default, Linux will load the modules you need for your system. This allows me to mount images files just like they were devices. Finally, you install and configure the user-space tools needed to deal with your hardware.

Packet socket This allows programs to interface with the network devices immediately without going through the network protocol implementation on the Linux kernel. It contains the drivers to access and communicate with hardware. This seems to be a weird driver, but it can come in handy from time to time.

Obtaining Hardware Information. It is with this configuration that the output of the lspci command and other system information is needed. Those are available in the user-space. Configuring the Boot Loader. The file is self-explanatory, but below you can find an example for auto-loading the ipw module.

But first some information on getting more information on modules. When you are in such a situation, you can still instruct your system to automatically load a particular kernel module at boot time. Using Gentoo's genkernel Script. You most likely don't, so here's a quick check-up. This will result in the build process to only ask for validation when new configuration items are found in the new sources that weren't available previously.

This allows you to re boot a kernel with additional parameters. Next, tell the kernel build tool to use this configuration as if it is your old er configuration. And repeatedly rmmod'ing the module just to load it again with a parameter is quite resource-intensive.

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As such, it is possible to build a kernel which supports certain hardware, but doesn't load support for these modules until absolutely necessary. Open the kernel configuration wizard the make menuconfig part so that you can update the kernel configuration accordingly. Our next stop is file system support. Block devices are devices where you can access data in blocks as opposed to characters.

Chapter 7. Configuring a Linux Kernel

You don't need to enable this, but I often perform network analysis myself so I need to have this enabled. To support my sound card, I enable sound card support and the sound system I want to use. Everything in kernel-space can have quite an impact to performance it must be fully tuned and proofread by various developers before it is accepted. At some point in time, you'll need to upgrade your kernel.

Dummy net driver support This driver allows me to create an interface which takes on all packets and just ignores them. This driver allows me to create an interface which takes on all packets and just ignores them. Event interface This enables evdev support, which is somewhat mandatory if you want to work with graphical interfaces for instance, the xorg configuration requires this.

Swap space is used when free memory is needed but not available. This can come in handy if you don't keep track of the configurations you use d for kernels. The following set of subsections explain various failures you might get in contact with. Enables powersaving features of the wireless cards - definitely a must-have if you have wireless on a laptop as this reduces power consumption dramatically. The menuconfig utility has an extensive help system built in.

PATCH v2 cpufreq Processor Clocking Control interface driver

Make sure that the output of the command shows that linux and perhaps initrd images are detected. Some kernel subsystems require in-kernel cryptographic algorithm support. But before we focus on these methods, a small introduction to the Linux kernel modules administration-wise. Enable Loadable Module Support. Input devices are the devices you know to interact with your system, such as a keyboard and a mouse.