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| author | Nitin Gupta <ngupta@vflare.org> | 2010-08-09 22:56:47 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-08-31 15:33:54 -0700 |
| commit | 33863c21e69e9bd988b63580ada0b729c1d90215 (patch) | |
| tree | 75b4416212d83929e519c7be058a005ea5e5a917 /drivers/staging/zram/Kconfig | |
| parent | e1a164d7a3e05aae15eb603ee8f1b77446480a3b (diff) | |
| download | kernel_samsung_smdk4412-33863c21e69e9bd988b63580ada0b729c1d90215.zip kernel_samsung_smdk4412-33863c21e69e9bd988b63580ada0b729c1d90215.tar.gz kernel_samsung_smdk4412-33863c21e69e9bd988b63580ada0b729c1d90215.tar.bz2 | |
Staging: zram: Replace ioctls with sysfs interface
Creates per-device sysfs nodes in /sys/block/zram<id>/
Currently following stats are exported:
- disksize
- num_reads
- num_writes
- invalid_io
- zero_pages
- orig_data_size
- compr_data_size
- mem_used_total
By default, disksize is set to 0. So, to start using
a zram device, fist write a disksize value and then
initialize device by writing any positive value to
initstate. For example:
# initialize /dev/zram0 with 50MB disksize
echo 50*1024*1024 | bc > /sys/block/zram0/disksize
echo 1 > /sys/block/zram0/initstate
When done using a disk, issue reset to free its memory
by writing any positive value to reset node:
echo 1 > /sys/block/zram0/reset
This change also obviates the need for 'rzscontrol' utility.
Signed-off-by: Nitin Gupta <ngupta@vflare.org>
Acked-by: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/zram/Kconfig')
| -rw-r--r-- | drivers/staging/zram/Kconfig | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/drivers/staging/zram/Kconfig b/drivers/staging/zram/Kconfig index 4654ae2..da079f8 100644 --- a/drivers/staging/zram/Kconfig +++ b/drivers/staging/zram/Kconfig @@ -15,15 +15,3 @@ config ZRAM See zram.txt for more information. Project home: http://compcache.googlecode.com/ - -config ZRAM_STATS - bool "Enable statistics for compressed RAM disks" - depends on ZRAM - default y - help - Enable statistics collection for compressed RAM devices. Statistics - are exported through ioctl interface, so you have to use zramconfig - program to get them. This adds only a minimal overhead. - - If unsure, say Y. - |