Differences

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--- linux:kernel [2009/04/30 23:46]
a cross-compiling
+++ linux:kernel [2009/05/25 00:35]
@@ Line 1: / Line 1: @@
-====== Linux kernel ======
-===== Compiling the debian way =====
-**see:** [[http://kernel-handbook.alioth.debian.org/|Debian Linux Kernel Handbook]]
-   bzip2 -dc /usr/src/patch.bz2 | patch -p1 --dry-run
-   make-kpkg clean
-   fakeroot make-kpkg --initrd --append-to-version=-custom kernel_image kernel_headers
-After **''--append-to-version=''** you can write any string that helps you identify the kernel, but it must begin with a minus (-) and must not contain whitespace.
-** SMP/DualCore compiling tip **
-   # CONCURRENCY_LEVEL=4 make-kpkg --initrd --rootcmd=fakeroot --append-to-version=<version> kernel_image
-** Cross-compiling ** \\
-see: http://michael-prokop.at/blog/2007/01/21/cross-compile-the-linux-kernel-on-debian/
-===== kernel lab =====
-kernellab − manage kernel configs for many machines easily
-  apt-get install kernellab
-usage:
-   kernellab [options] <host> [<version>[−ac<patchlevel>] [<module>..]]
-or more advance :)
-   for a in router1 router2 router3 ...; do kernellab "$a"; done
-=====  IO scheduler =====
-    *  Completely Fair Queuing—elevator=cfq
-    * Deadline—elevator=deadline
-    * NOOP—elevator=noop
-    * Anticipatory—elevator=as
-   image = /boot/vmlinuz26113
-   initrd = /boot/initrd.gz
-   append = "elevator=deadline"
-   root = /dev/hda1
-   label = kernel_2.6.11.3
-   read-only
-   # cat /sys/block/hda/queue/scheduler
-   noop [anticipatory] deadline cfq
-how come deadline is not being chosen??
-This works.
-   # echo deadline > /sys/block/hda/queue/scheduler
-   # cat /sys/block/hda/queue/scheduler
-   noop anticipatory [deadline] cfq