Merge branch 'upstream' into max-sect (9a375e93) · Commits · e / devices / android_kernel_fairphone_FP4

Documentation/block/switching-sched.txt

0 → 100644

+22 −0

Original line number	Diff line number	Diff line
		As of the Linux 2.6.10 kernel, it is now possible to change the
		IO scheduler for a given block device on the fly (thus making it possible,
		for instance, to set the CFQ scheduler for the system default, but
		set a specific device to use the anticipatory or noop schedulers - which
		can improve that device's throughput).

		To set a specific scheduler, simply do this:

		echo SCHEDNAME > /sys/block/DEV/queue/scheduler

		where SCHEDNAME is the name of a defined IO scheduler, and DEV is the
		device name (hda, hdb, sga, or whatever you happen to have).

		The list of defined schedulers can be found by simply doing
		a "cat /sys/block/DEV/queue/scheduler" - the list of valid names
		will be displayed, with the currently selected scheduler in brackets:

		# cat /sys/block/hda/queue/scheduler
		noop anticipatory deadline [cfq]
		# echo anticipatory > /sys/block/hda/queue/scheduler
		# cat /sys/block/hda/queue/scheduler
		noop [anticipatory] deadline cfq

+1 −1

Original line number	Diff line number	Diff line
		@@ -53,4 +53,4 @@ the CPUFreq Mailing list:
		* http://lists.linux.org.uk/mailman/listinfo/cpufreq

		Clock and voltage scaling for the SA-1100:
		* http://www.lart.tudelft.nl/projects/scaling
		* http://www.lartmaker.nl/projects/scaling

+3 −2

Original line number	Diff line number	Diff line
		@@ -25,8 +25,9 @@ Who: Adrian Bunk <bunk@stusta.de>

		---------------------------

		What: drivers depending on OBSOLETE_OSS_DRIVER
		When: January 2006
		What: drivers that were depending on OBSOLETE_OSS_DRIVER
		(config options already removed)
		When: before 2.6.19
		Why: OSS drivers with ALSA replacements
		Who: Adrian Bunk <bunk@stusta.de>

+5 −0

Original line number	Diff line number	Diff line
		@@ -246,6 +246,7 @@ class/
		devices/
		firmware/
		net/
		fs/

		devices/ contains a filesystem representation of the device tree. It maps
		directly to the internal kernel device tree, which is a hierarchy of
		@@ -264,6 +265,10 @@ drivers/ contains a directory for each device driver that is loaded
		for devices on that particular bus (this assumes that drivers do not
		span multiple bus types).

		fs/ contains a directory for some filesystems. Currently each
		filesystem wanting to export attributes must create its own hierarchy
		below fs/ (see ./fuse.txt for an example).


		More information can driver-model specific features can be found in
		Documentation/driver-model/.

+10 −1

Original line number	Diff line number	Diff line
		@@ -32,7 +32,16 @@ The output of "cat /proc/meminfo" will have lines like:
		.....
		HugePages_Total: xxx
		HugePages_Free: yyy
		Hugepagesize: zzz KB
		HugePages_Rsvd: www
		Hugepagesize: zzz kB

		where:
		HugePages_Total is the size of the pool of hugepages.
		HugePages_Free is the number of hugepages in the pool that are not yet
		allocated.
		HugePages_Rsvd is short for "reserved," and is the number of hugepages
		for which a commitment to allocate from the pool has been made, but no
		allocation has yet been made. It's vaguely analogous to overcommit.

		/proc/filesystems should also show a filesystem of type "hugetlbfs" configured
		in the kernel.