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* zram-swap: enable swap discardRui Salvaterra2020-07-111-1/+1
| | | | | | | | | | | Zram block devices have supported trim/discard for over six years, let's enable it. This allows the zram device to actually free up allocated memory when it's marked as unused in the filesystem metadata, as explained in more detail in the original commit message [1]. [1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/drivers/block/zram/zram_drv.c?h=linux-4.14.y&id=f4659d8e620d08bd1a84a8aec5d2f5294a242764 Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
* zram-swap: init: replace backticks with $()Rui Salvaterra2020-06-301-4/+4
| | | | | | | | This replaces deprecated backticks by more versatile $(...) syntax. Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com> [add commit description] Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
* zram-swap: support swap priorityMaxim Storchak2020-01-151-1/+3
| | | | | | | | If zram-backed swap is added after an existing swap, it gets a lower priority. Assiming that usually all other swaps are slower, there should be a way to assign a higher priority to zram swap. Signed-off-by: Maxim Storchak <m.storchak@gmail.com>
* zram-swap: Add extra commands for status/compactionEmil Muratov2019-07-071-21/+34
| | | | | | | | | This patch adds two new commands: zram status - shows memory stats for all zram swaps zram compaction - trigger compaction for all zram swaps Signed-off-by: Emil Muratov <gpm@hotplug.ru> Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
* zram-swap: Add zram compaction and statistics info outputEmil Muratov2019-07-071-1/+57
| | | | | | | | | Executing '/etc/init.d/zram start' during runtime (with a swap being already mounted) triggers zram device compaction and prints out nice stats info about zram memory usage Signed-off-by: Emil Muratov <gpm@hotplug.ru> Signed-off-by: Christian Lamparter <chunkeey@gmail.com> [use IEC's MiB unit]
* zram-swap: Add "max compression streams" configuration optionEmil Muratov2018-09-291-0/+14
| | | | | | | | | | Config option to limit maximum compression streams per zram dev for multicore CPU's. This could be defined via 'zram_comp_streams' option in the 'system' section of '/etc/config/system' file or via cli (for e.x. with 'uci set system.@System[0].zram_comp_streams=2 && uci commit system'). Default is number of logical CPU cores. Signed-off-by: Emil Muratov <gpm@hotplug.ru>
* zram-swap: fix number of created zram devices for multicore CPU'sEmil Muratov2018-09-291-45/+29
| | | | | | | | | Use only one zram swap device of the specified $size instead of [N x $size] devices for multicore CPUs Now zram module uses multiple compression streams for each dev by default, so we do not need to create several zram devs to utilize multicore CPUs. Signed-off-by: Emil Muratov <gpm@hotplug.ru>
* zram-swap: fix zram dev reset for multicore cpu devicesEmil Muratov2018-09-291-12/+10
| | | | | | | | | | * "zram stop" could reset up to $(num_of_cores) zram devices even if some of those were not mounted as swap dev's. This fix tries to enumerate mounted swap zram dev's before making a reset * remove hot-added zram devs on stop (except zram0) Signed-off-by: Emil Muratov <gpm@hotplug.ru>
* zram-swap: compression algorithm configuration optionEmil Muratov2018-09-291-0/+18
| | | | | | | | | | | | Compression algorithms for zram are provided by kernel crypto API, could be any of [lzo|zl4|deflate|<some_more>] depending on kernel modules. Compress algo for zram-swap could be defined via 'zram_comp_algo' option in 'system' section of '/etc/config/system' file, or via cli (for e.x. with 'uci set system.@System[0].zram_comp_algo=lz4 && uci commit system'). check available algo's via 'cat /sys/block/zram0 /comp_algorithm' Signed-off-by: Emil Muratov <gpm@hotplug.ru>
* zram-swap: Shell cosmeticSamuel Casa2018-09-241-4/+4
| | | | Signed-off-by: Samuel Casa <samuel.casa@neratec.com>
* zram-swap: remove trailing whitespaces in init scriptSamuel Casa2018-09-241-2/+2
| | | | | | Signed-off-by: Samuel Casa <samuel.casa@neratec.com> [slightly reword subject] Signed-off-by: Jo-Philipp Wich <jo@mein.io>
* zram-swap: CONFIG_PROCD_ZRAM_TMPFS compatibilityConn O'Griofa2016-09-051-2/+11
| | | | | | | | Enable CONFIG_PROCD_ZRAM_TMPFS compatibility via two changes to list_cpu_idx(): * detect if /tmp is being used by /dev/zram0; if yes, offset initial value by 1 to skip first zram device. * hot-add /dev/zram1, if not already present. Signed-off-by: Conn O'Griofa >connogriofa@gmail.com>
* packages: clean up the package folderJohn Crispin2013-06-211-0/+123
Signed-off-by: John Crispin <blogic@openwrt.org> SVN-Revision: 37007
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