Re: [OpenWrt-Devel] compcache / ramzswap / zram / frontswap
On 01/03/2013 09:17 PM, Hauke Mehrtens wrote: On 12/31/2012 05:07 PM, Bastian Bittorf wrote: since 2 years we are using zram[0] in our production networks and we love it. i like to kick out the package compcache which is very outdated and just use the mainline implementation. at the moment we are manually go into kernel_menuconfig and switch on: General setup: --- [*] Support for paging of anonymous memory (swap) Device Drivers --- Staging drivers --- [*] Compressed RAM block device support which means: CONFIG_FRONTSWAP is not set CONFIG_SWAP=y CONFIG_HIBERNATION is not set CONFIG_MTD_SWAP is not set CONFIG_ZRAM=y CONFIG_ZRAM_DEBUG is not set CONFIG_ZSMALLOC=y CONFIG_LZO_COMPRESS=y CONFIG_LZO_DECOMPRESS=y also we use our own rc-file, so we can do /etc/init.d/zram start|stop https://github.com/bittorf/kalua/blob/master/openwrt-addons/etc/init.d/zram IMHO it should be a menuconfig-entry in base-system, because it is fundamental for all 16mb routers. What i need for baking a Makefile is a hint for a package which a) activates some symbols in kernel-config b) enforces building and loading of a kmodule c) has an rc-file I'am new to Make, so please help 8-) Also i like to have feedback. For the motivation, the output of a WRT54G running 3.6.11: root@openwrt:~ free total used free shared buffers Mem: 1300411420 15840 696 -/+ buffers: 10724 2280 Swap: 6140 584 5556 bye, bastian [0] https://code.google.com/p/compcache/ Nice work Bastian. I would not add it as a global option, but as a module, so it could also be used by someone not building his own image, but using a prebuild image, with kernel 3.6.11 I had a problem building this as a module. The swap utils e.g. from busybox are also needed, this increases the busybox binary by 3.2K uncompressed. CONFIG_BUSYBOX_CONFIG_MKSWAP=y CONFIG_BUSYBOX_CONFIG_SWAPONOFF=y Attached is a patch adding zram as a module. The default image without zram should be 3.2K bigger (uncompressed) but there are no more influences to a image without zram support. Bastian could you test this and give feedback? Hauke This was committed in a modified version hopefully incorporating all the good comments and the new version of the script in r35025. Hauke ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] compcache / ramzswap / zram / frontswap
* Hauke Mehrtens ha...@hauke-m.de [06.01.2013 18:34]: This was committed in a modified version hopefully incorporating all the good comments and the new version of the script in r35025. root@openwrt:~ /etc/init.d/zram -ash: /etc/init.d/zram: Permission denied bye, bastian ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] compcache / ramzswap / zram / frontswap
On 5 January 2013 10:58, Bastian Bittorf bitt...@bluebottle.com wrote: * Damian Kaczkowski damian.kaczkow...@gmail.com [05.01.2013 09:37]: mkswap and swapon bins (but not swapoff btw.)). Maybe better would be what hauke proposed? - just set CONFIG_BUSYBOX_CONFIG_MKSWAP=y, CONFIG_BUSYBOX_CONFIG_SWAPONOFF=y as default config. Then also some other packages might benefit from this, eg. block-mount i dont like the idea to bloat the standard build, this is my proposal: Me too. - build zram as kmodule - build user-package zram-swap, which has the deps: mkswap + swaponoff + zram-kmodule if a user on a standard build does 'opkg install zram-swap' it must also install the applets 'busybox-mkswap' and 'busybox-swaponoff' so they must be build separately in the standard-build (so the repo's gets them) You can't install applets alone. Its one package busybox with enabled or disabled functionality. is there a way the define a global var SWAPUTILS which can point busybox-stuff OR gnu-stuff? There already is a package which has needed tools - PACKAGE_swap-utils (utilities - disck - swap-utils) Just use DEPENDS which Stefan proposed. They will do the trick: DEPENDS:=+kmod-lib-lzo +kmod-zsmalloc \ +!BUSYBOX_CONFIG_MKSWAP:swap-utils \ +!BUSYBOX_CONFIG_SWAPONOFF:swap-utils You can manually select busybox applets when building your own image, and for people using prebuild images (without busybox applets enabled) opkg will install swap-utils instead. ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] compcache / ramzswap / zram / frontswap
* Damian Kaczkowski damian.kaczkow...@gmail.com [05.01.2013 15:37]: You can't install applets alone. Its one package busybox with enabled or disabled functionality. ofcourse you can package an applet. dont know if the buildsystem can do that, but it is possible. (but bound to the specific busybox-version) e.g. http://ipkg.berlin.freifunk.net/packages/busybox-awk_1.0.1_mipsel.ipk DEPENDS:=+kmod-lib-lzo +kmod-zsmalloc \ +!BUSYBOX_CONFIG_MKSWAP:swap-utils \ +!BUSYBOX_CONFIG_SWAPONOFF:swap-utils You can manually select busybox applets when building your own image, and for people using prebuild images (without busybox applets enabled) opkg will install swap-utils instead. ok, i'am fine with this. another thing which we must think about: the kernel-symbol CONFIG_SWAP=y (Support for paging of anonymous memory) has to be active, i'm not sure of all platform have this. can somebody check this? bye, bastian. ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] compcache / ramzswap / zram / frontswap
On 5 January 2013 15:47, Bastian Bittorf bitt...@bluebottle.com wrote: * Damian Kaczkowski damian.kaczkow...@gmail.com [05.01.2013 15:37]: You can't install applets alone. Its one package busybox with enabled or disabled functionality. ofcourse you can package an applet. dont know if the buildsystem can do that, but it is possible. (but bound to the specific busybox-version) e.g. http://ipkg.berlin.freifunk.net/packages/busybox-awk_1.0.1_mipsel.ipk Hmm. Thanks for pointers. Do you have makefile for this package? Isn't this just a standalone busybox with only awk feature enabled? ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] compcache / ramzswap / zram / frontswap
Hauke, I tested this patch today and just wanted to give some feedback. The patch applies cleanly and installs everything correctly, however it does not activate the swap on boot up. Executing '/etc/init.d/zram start' successfully starts. There is also a uci error when starting when the 'zram_size_mb' is not set. On 01/03/2013 03:17 PM, Hauke Mehrtens wrote: On 12/31/2012 05:07 PM, Bastian Bittorf wrote: since 2 years we are using zram[0] in our production networks and we love it. i like to kick out the package compcache which is very outdated and just use the mainline implementation. at the moment we are manually go into kernel_menuconfig and switch on: General setup: --- [*] Support for paging of anonymous memory (swap) Device Drivers --- Staging drivers --- [*] Compressed RAM block device support which means: CONFIG_FRONTSWAP is not set CONFIG_SWAP=y CONFIG_HIBERNATION is not set CONFIG_MTD_SWAP is not set CONFIG_ZRAM=y CONFIG_ZRAM_DEBUG is not set CONFIG_ZSMALLOC=y CONFIG_LZO_COMPRESS=y CONFIG_LZO_DECOMPRESS=y also we use our own rc-file, so we can do /etc/init.d/zram start|stop https://github.com/bittorf/kalua/blob/master/openwrt-addons/etc/init.d/zram IMHO it should be a menuconfig-entry in base-system, because it is fundamental for all 16mb routers. What i need for baking a Makefile is a hint for a package which a) activates some symbols in kernel-config b) enforces building and loading of a kmodule c) has an rc-file I'am new to Make, so please help 8-) Also i like to have feedback. For the motivation, the output of a WRT54G running 3.6.11: root@openwrt:~ free total used free shared buffers Mem: 1300411420 15840 696 -/+ buffers: 10724 2280 Swap: 6140 584 5556 bye, bastian [0] https://code.google.com/p/compcache/ Nice work Bastian. I would not add it as a global option, but as a module, so it could also be used by someone not building his own image, but using a prebuild image, with kernel 3.6.11 I had a problem building this as a module. The swap utils e.g. from busybox are also needed, this increases the busybox binary by 3.2K uncompressed. CONFIG_BUSYBOX_CONFIG_MKSWAP=y CONFIG_BUSYBOX_CONFIG_SWAPONOFF=y Attached is a patch adding zram as a module. The default image without zram should be 3.2K bigger (uncompressed) but there are no more influences to a image without zram support. Bastian could you test this and give feedback? Hauke ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] compcache / ramzswap / zram / frontswap
* Hauke Mehrtens ha...@hauke-m.de [03.01.2013 21:30]: I would not add it as a global option, but as a module, so it could also be used by someone not building his own image, but using a prebuild image, with kernel 3.6.11 I had a problem building this as a module. The swap utils e.g. from busybox are also needed, this increases the busybox binary by 3.2K uncompressed. CONFIG_BUSYBOX_CONFIG_MKSWAP=y CONFIG_BUSYBOX_CONFIG_SWAPONOFF=y Attached is a patch adding zram as a module. The default image without zram should be 3.2K bigger (uncompressed) but there are no more influences to a image without zram support. Bastian could you test this and give feedback? i compiled it for 2 different platforms (ar7xxx + brcm47xx) and it mostly works, these are my issues: - zram initfile is not enabled by default, there is some magic needed in the Makefile, e.g. '$(INSTALL_BIN) ./files/zram.init $(1)/etc/init.d/zram' - the minor error during uci calls an unset var is fixed: https://github.com/bittorf/kalua/blob/master/openwrt-addons/etc/init.d/zram diff: https://github.com/bittorf/kalua/commit/078b53388f08cf752b32e4606bf8c60ce7630847 - MKSWAP and SWAPONOFF has to be a dependency, the old package compcache does this via DEPENDS:=@BUSYBOX_CONFIG_SWAPONOFF @BUSYBOX_CONFIG_MKSWAP but: gogogo! it's working - we want it 8-) bye, bastian ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] compcache / ramzswap / zram / frontswap
On 2013-01-03 9:17 PM, Hauke Mehrtens wrote: diff --git a/package/kernel/modules/other.mk b/package/kernel/modules/other.mk index 2374d19..b3bf6fd 100644 --- a/package/kernel/modules/other.mk +++ b/package/kernel/modules/other.mk @@ -729,3 +729,40 @@ define KernelPackage/ikconfig/description endef $(eval $(call KernelPackage,ikconfig)) + +define KernelPackage/zsmalloc + SUBMENU:=$(OTHER_MENU) + TITLE:=ZSMALLOC + DEPENDS:=@!LINUX_3_3 + KCONFIG:=CONFIG_ZSMALLOC + FILES:=$(LINUX_DIR)/drivers/staging/zsmalloc/zsmalloc.ko + AUTOLOAD:=$(call AutoLoad,20,zsmalloc) +endef + +define KernelPackage/zsmalloc/description + Memory allocator for compressed pages +endef + +$(eval $(call KernelPackage,zsmalloc)) + +define KernelPackage/zram + SUBMENU:=$(OTHER_MENU) + TITLE:=ZRAM + DEPENDS:=+kmod-lib-lzo +kmod-zsmalloc + KCONFIG:= \ + CONFIG_ZRAM \ + CONFIG_ZRAM_DEBUG=n + FILES:=$(LINUX_DIR)/drivers/staging/zram/zram.ko + AUTOLOAD:=$(call AutoLoad,25,zram) +endef + +define KernelPackage/zram/description + Compressed RAM block device support +endef + +define KernelPackage/zram/install + $(INSTALL_DIR) $(1)/etc/init.d + $(INSTALL_BIN) ./files/zram $(1)/etc/init.d/zram +endef + +$(eval $(call KernelPackage,zram)) Can you merge these two into one package? I don't think there's anything else using zsmalloc, so there's no need to add an extra package for it. The rest looks good to me. - Felix ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] compcache / ramzswap / zram / frontswap
Hi. On 4 January 2013 18:25, Bastian Bittorf bitt...@bluebottle.com wrote: - MKSWAP and SWAPONOFF has to be a dependency, the old package compcache does this via DEPENDS:=@BUSYBOX_CONFIG_SWAPONOFF @BUSYBOX_CONFIG_MKSWAP I think better dependency would be: define KernelPackage/zram/config select BUSYBOX_CONFIG_MKSWAP if !PACKAGE_swap-utils select BUSYBOX_CONFIG_SWAPONOFF if !PACKAGE_swap-utils endef btw. @devs - is there an openwrt DEPENDS:= equivalent for select symbol if expr ? Greets. ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] compcache / ramzswap / zram / frontswap
On 4 January 2013 21:52, Damian Kaczkowski damian.kaczkow...@gmail.comwrote: On 4 January 2013 18:25, Bastian Bittorf bitt...@bluebottle.com wrote: - MKSWAP and SWAPONOFF has to be a dependency, the old package compcache does this via DEPENDS:=@BUSYBOX_CONFIG_SWAPONOFF @BUSYBOX_CONFIG_MKSWAP I think better dependency would be: define KernelPackage/zram/config select BUSYBOX_CONFIG_MKSWAP if !PACKAGE_swap-utils select BUSYBOX_CONFIG_SWAPONOFF if !PACKAGE_swap-utils endef btw. Do we really need dependency for mkswap / swaponoff ? You can use any fs on zram disk not only swap (also your init script already checks for mkswap and swapon bins (but not swapoff btw.)). Maybe better would be what hauke proposed? - just set CONFIG_BUSYBOX_CONFIG_MKSWAP=y, CONFIG_BUSYBOX_CONFIG_SWAPONOFF=y as default config. Then also some other packages might benefit from this, eg. block-mount ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] compcache / ramzswap / zram / frontswap
On 13-01-04 04:23 PM, Damian Kaczkowski wrote: On 4 January 2013 21:52, Damian Kaczkowski damian.kaczkow...@gmail.comwrote: On 4 January 2013 18:25, Bastian Bittorf bitt...@bluebottle.com wrote: - MKSWAP and SWAPONOFF has to be a dependency, the old package compcache does this via DEPENDS:=@BUSYBOX_CONFIG_SWAPONOFF @BUSYBOX_CONFIG_MKSWAP I think better dependency would be: define KernelPackage/zram/config select BUSYBOX_CONFIG_MKSWAP if !PACKAGE_swap-utils select BUSYBOX_CONFIG_SWAPONOFF if !PACKAGE_swap-utils endef btw. Do we really need dependency for mkswap / swaponoff ? You can use any fs on zram disk not only swap (also your init script already checks for mkswap and swapon bins (but not swapoff btw.)). Maybe better would be what hauke proposed? - just set CONFIG_BUSYBOX_CONFIG_MKSWAP=y, CONFIG_BUSYBOX_CONFIG_SWAPONOFF=y as default config. Then also some other packages might benefit from this, eg. block-mount Actually swaponoff and mkswap were ditched by default due to size (block-mount is an optional package). Also depends that change busybox configuration are considered bad and it was an error to have them before (it creates incompatible bb builds depending on what packages are built). Better only have the util-linux dependency (if it's even needed). -- Daniel Dickinson PowerCloud Systems, Palo Alto, CA Senior Firmware Engineer (In Canada: Senior Firmware Analyst) ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] compcache / ramzswap / zram / frontswap
I think better dependency would be: define KernelPackage/zram/config select BUSYBOX_CONFIG_MKSWAP if !PACKAGE_swap-utils select BUSYBOX_CONFIG_SWAPONOFF if !PACKAGE_swap-utils endef btw. @devs - is there an openwrt DEPENDS:= equivalent for select symbol if expr ? Yes there is: DEPENDS:=+@!PACKAGE_swap-utils:BUSYBOX_CONFIG_MKSWAP I tried something like this yesterday and added it to http://wiki.openwrt.org/doc/devel/dependencies Cheers, Stefan ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] compcache / ramzswap / zram / frontswap
On 4 January 2013 23:46, Stefan Hellermann ste...@the2masters.de wrote: I think better dependency would be: define KernelPackage/zram/config select BUSYBOX_CONFIG_MKSWAP if !PACKAGE_swap-utils select BUSYBOX_CONFIG_SWAPONOFF if !PACKAGE_swap-utils endef btw. @devs - is there an openwrt DEPENDS:= equivalent for select symbol if expr ? Yes there is: DEPENDS:=+@!PACKAGE_swap-utils:BUSYBOX_CONFIG_MKSWAP Nice. Thanks for the hint Stefan! I wanted to use such DEPENDS type instead of define (...)/config block but unfortunately after converting Kconfig selects to equivalent openwrt DEPENDS:, eg: *DEPENDS:=+@!PACKAGE_swap-utils:BUSYBOX_CONFIG_MKSWAP +@!PACKAGE_swap-utils:BUSYBOX_CONFIG_SWAPONOFF* I got this in opkg control file: *Package: kmod-zram Version: 3.6.11-1 Depends: kernel (=3.6.11-1-479d5850a6a04abbd6713ee6c4ef65ac), kmod-lib-lzo, kmod-zsmalloc, **BUSYBOX_CONFIG_MKSWAP, **BUSYBOX_CONFIG_SWAPONOFF, * This doesn't look good, does it? So I tried to reverse this dependency to allow people using buildroot to have the possibility to optimize their builds and be able to select busybox applets instead of swap-utils package, and also leaving other people using prebuild images the possibility to install this kmod package through opkg with appropriate dependencies. Unfortunately with this: *DEPENDS:=+@!BUSYBOX_CONFIG_MKSWAP:PACKAGE_swap-utils +@!BUSYBOX_CONFIG_SWAPONOFF:PACKAGE_swap-utils* I got this in opkg control file: *Package: kmod-zram Version: 3.6.11-1 Depends: kernel (=3.6.11-1-479d5850a6a04abbd6713ee6c4ef65ac), kmod-lib-lzo, kmod-zsmalloc, PACKAGE_swap-utils, PACKAGE_swap-utils * Which still doesn't look good. @devs: Is there any chance for patch to opkg system so it generates proper Depends: in such situations? I mean swap-utils instead of PACKAGE_swap-utils This would be useful I think. What do you think? btw. shouldn't we move init script to some seperate userspace package and put the dependencies there? zram doesn't need swap-utils ... what if one want to use it for some other stuff. I know that init script is not much for a seperate package... but... is it a good idea to put some init script in kernel module package? btw2. This also doesn't work: *DEPENDS:=+@!BUSYBOX_CONFIG_MKSWAP:swap-utils +@!BUSYBOX_CONFIG_SWAPONOFF:swap-utils* ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] compcache / ramzswap / zram / frontswap
I wanted to use such DEPENDS type instead of define (...)/config block but unfortunately after converting Kconfig selects to equivalent openwrt DEPENDS:, eg: DEPENDS:=+@!PACKAGE_swap-utils:BUSYBOX_CONFIG_MKSWAP +@!PACKAGE_swap-utils:BUSYBOX_CONFIG_SWAPONOFF I got this in opkg control file: Package: kmod-zram Version: 3.6.11-1 Depends: kernel (=3.6.11-1-479d5850a6a04abbd6713ee6c4ef65ac), kmod-lib-lzo, kmod-zsmalloc, BUSYBOX_CONFIG_MKSWAP, BUSYBOX_CONFIG_SWAPONOFF, This doesn't look good, does it? So I tried to reverse this dependency to allow people using buildroot to have the possibility to optimize their builds and be able to select busybox applets instead of swap-utils package, and also leaving other people using prebuild images the possibility to install this kmod package through opkg with appropriate dependencies. Unfortunately with this: DEPENDS:=+@!BUSYBOX_CONFIG_MKSWAP:PACKAGE_swap-utils +@!BUSYBOX_CONFIG_SWAPONOFF:PACKAGE_swap-utils I got this in opkg control file: Package: kmod-zram Version: 3.6.11-1 Depends: kernel (=3.6.11-1-479d5850a6a04abbd6713ee6c4ef65ac), kmod-lib-lzo, kmod-zsmalloc, PACKAGE_swap-utils, PACKAGE_swap-utils Which still doesn't look good. @devs: Is there any chance for patch to opkg system so it generates proper Depends: in such situations? I mean swap-utils instead of PACKAGE_swap-utils This would be useful I think. What do you think? That's easy: DEPENDS:=+!BUSYBOX_CONFIG_MKSWAP:swap-utils the @ is only needed if you want to select a symbol. I have never watched into a opkg control file, otherwise I would have seen that busybox depends will not work. For compiling you own image it's fine. ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] compcache / ramzswap / zram / frontswap
On 5 January 2013 01:37, Stefan Hellermann ste...@the2masters.de wrote: That's easy: DEPENDS:=+!BUSYBOX_CONFIG_MKSWAP:swap-utils the @ is only needed if you want to select a symbol. I have never watched into a opkg control file, otherwise I would have seen that busybox depends will not work. For compiling you own image it's fine. Unfortunately this doesn't work. Menuconfig does not see the symbol swap-utils which is expected behavior. * Symbol: PACKAGE_kmod-zram [=n] x Prompt: kmod-zram Compressed RAM block device x Defined at tmp/.config-package.in:7970 x Location: x - Kernel modules x - Other modules x Selects: swap-utils PACKAGE_kmod-lib-lzo [=y] swap-utils PACKAGE_kmod-zsmalloc [=n] * It won't select PACKAGE_swap-utils if BUSYBOX_CONFIG_MKSWAP is *not* set (because it tries to select swap-utils symbol which is nonexistent). Thus leaving package with broken dependencies. I think this has to be workaround/pached on buildroot first so it allows DEPENDS like above and generates proper opkg control files in such situations. Eg: a) It should strip the PACKAGE_ portion from opkg control file in such case: *DEPENDS:=+!BUSYBOX_CONFIG_MKSWAP:PACKAGE_swap-utils* b) but also It should strip the whole symbol in case it is not a package symbol, eg: *DEPENDS:=+!PACKAGE_swap-utils*:*BUSYBOX_CONFIG_MKSWAP * Then it should work ok I think. ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] compcache / ramzswap / zram / frontswap
On 5 January 2013 02:36, Damian Kaczkowski damian.kaczkow...@gmail.comwrote: I think this has to be workaround/pached on buildroot first so it allows DEPENDS like above and generates proper opkg control files in such situations. Eg: a) It should strip the PACKAGE_ portion from opkg control file in such case: *DEPENDS:=+!BUSYBOX_CONFIG_MKSWAP:PACKAGE_swap-utils* b) but also It should strip the whole symbol in case it is not a package symbol, eg: *DEPENDS:=+!PACKAGE_swap-utils*:*BUSYBOX_CONFIG_MKSWAP * c) or just append PACKAGE_ to appropriate parts of generated tmp/. config-package.in file when used such DEPENDS: *DEPENDS:=+!BUSYBOX_CONFIG_MKSWAP:swap-utils* ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] compcache / ramzswap / zram / frontswap
On 5 January 2013 01:37, Stefan Hellermann ste...@the2masters.de wrote: That's easy: DEPENDS:=+!BUSYBOX_CONFIG_MKSWAP:swap-utils Unfortunately this doesn't work. Menuconfig does not see the symbol swap-utils which is expected behavior. Symbol: PACKAGE_kmod-zram [=n] x Prompt: kmod-zram Compressed RAM block device x Defined at tmp/.config-package.in:7970 x Location: x - Kernel modules x - Other modules x Selects: swap-utils PACKAGE_kmod-lib-lzo [=y] swap-utils PACKAGE_kmod-zsmalloc [=n] It won't select PACKAGE_swap-utils if BUSYBOX_CONFIG_MKSWAP is not set (because it tries to select swap-utils symbol which is nonexistent). Thus leaving package with broken dependencies. Hmm, here it works! I double checked it! A package with DEPENDS:= +!BUSYBOX_CONFIG_HOSTNAME:net-tools-hostname I compiled it with BUSYBOX_CONFIG_HOSTNAME=y and the resulting opkg does not depend on net-tools-hostname Then I removed BUSYBOX_CONFIG_HOSTNAME and compiled the package again, now it depends on net-tools-hostname and it is even build before my own package. ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] compcache / ramzswap / zram / frontswap
My bad! You are right Stephan. I apologizes. I have overlooked missing @ in your DEPENDS ... been testing with +@! ... -.- Time to sleep. Sorry all and thank you again Stefan. When doing funky DEPENDS always think of poor opkg which has to install a package later. It cannot add a applet to busybox... ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] compcache / ramzswap / zram / frontswap
On 12/31/2012 05:07 PM, Bastian Bittorf wrote:
since 2 years we are using zram[0] in our production
networks and we love it. i like to kick out the package
compcache which is very outdated and just use the mainline
implementation. at the moment we are manually go into
kernel_menuconfig and switch on:
General setup:
--- [*] Support for paging of anonymous memory (swap)
Device Drivers
--- Staging drivers --- [*] Compressed RAM block device support
which means:
CONFIG_FRONTSWAP is not set
CONFIG_SWAP=y
CONFIG_HIBERNATION is not set
CONFIG_MTD_SWAP is not set
CONFIG_ZRAM=y
CONFIG_ZRAM_DEBUG is not set
CONFIG_ZSMALLOC=y
CONFIG_LZO_COMPRESS=y
CONFIG_LZO_DECOMPRESS=y
also we use our own rc-file, so we can do
/etc/init.d/zram start|stop
https://github.com/bittorf/kalua/blob/master/openwrt-addons/etc/init.d/zram
IMHO it should be a menuconfig-entry in base-system, because it
is fundamental for all 16mb routers. What i need for baking a Makefile
is a hint for a package which
a) activates some symbols in kernel-config
b) enforces building and loading of a kmodule
c) has an rc-file
I'am new to Make, so please help 8-) Also i like to have feedback.
For the motivation, the output of a WRT54G running 3.6.11:
root@openwrt:~ free
total used free shared buffers
Mem: 1300411420 15840 696
-/+ buffers: 10724 2280
Swap: 6140 584 5556
bye, bastian
[0] https://code.google.com/p/compcache/
Nice work Bastian.
I would not add it as a global option, but as a module, so it could also
be used by someone not building his own image, but using a prebuild
image, with kernel 3.6.11 I had a problem building this as a module.
The swap utils e.g. from busybox are also needed, this increases the
busybox binary by 3.2K uncompressed.
CONFIG_BUSYBOX_CONFIG_MKSWAP=y
CONFIG_BUSYBOX_CONFIG_SWAPONOFF=y
Attached is a patch adding zram as a module. The default image without
zram should be 3.2K bigger (uncompressed) but there are no more
influences to a image without zram support. Bastian could you test this
and give feedback?
Hauke
From 57063b771aebde8b0e1a938c2e2c42b61aeffe1d Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens ha...@hauke-m.de
Date: Thu, 3 Jan 2013 20:54:46 +0100
Subject: [PATCH] zram
---
package/busybox/config/util-linux/Config.in |4 +-
package/kernel/files/zram | 105 +++
package/kernel/modules/other.mk | 37 ++
3 files changed, 144 insertions(+), 2 deletions(-)
create mode 100755 package/kernel/files/zram
diff --git a/package/busybox/config/util-linux/Config.in b/package/busybox/config/util-linux/Config.in
index 14d4777..d60b139 100644
--- a/package/busybox/config/util-linux/Config.in
+++ b/package/busybox/config/util-linux/Config.in
@@ -474,7 +474,7 @@ config BUSYBOX_CONFIG_FEATURE_MDEV_LOAD_FIRMWARE
config BUSYBOX_CONFIG_MKSWAP
bool mkswap
- default n
+ default y
help
The mkswap utility is used to configure a file or disk partition as
Linux swap space. This allows Linux to use the entire file or
@@ -652,7 +652,7 @@ config BUSYBOX_CONFIG_SETARCH
config BUSYBOX_CONFIG_SWAPONOFF
bool swaponoff
- default n
+ default y
select BUSYBOX_CONFIG_PLATFORM_LINUX
help
This option enables both the 'swapon' and the 'swapoff' utilities.
diff --git a/package/kernel/files/zram b/package/kernel/files/zram
new file mode 100755
index 000..04ab693
--- /dev/null
+++ b/package/kernel/files/zram
@@ -0,0 +1,105 @@
+#!/bin/sh /etc/rc.common
+
+START=00
+
+ram_size()
+{
+ local line
+
+ while read line; do case $line in MemTotal:*) set $line; echo $2; break ;; esac; done /proc/meminfo
+}
+
+zram_size() # in megabytes
+{
+ local zram_size=$( uci get system.@system[0].zram_size_mb )
+ local ram_size=$( ram_size )
+
+ [ -z $zram_size ] {
+ # e.g. 6mb for 16mb-routers or 61mb for 128mb-routers
+ zram_size=$(( $ram_size / 2048 ))
+ }
+
+ echo $zram_size
+}
+
+zram_applicable()
+{
+ local zram_dev=$1
+
+ grep -sq ^$zram_dev /proc/swaps {
+ logger -s -t zram_applicable -p daemon.notice [OK] '$zram_dev' already active
+ return 1
+ }
+
+ [ -e $zram_dev ] || {
+ logger -s -t zram_applicable -p daemon.crit [ERROR] device '$zram_dev' not found
+ return 1
+ }
+
+ which mkswap /dev/null || {
+ logger -s -t zram_applicable -p daemon.err [ERROR] 'mkswap' not installed
+ return 1
+ }
+
+ which swapon /dev/null || {
+ logger -s -t zram_applicable -p daemon.err [ERROR] 'swapon' not installed
+ return 1
+ }
+}
+
+zram_dev()
+{
+ local core=$1
+
+ echo /dev/zram${core:-0}
+}
+
+list_cpu_idx()
+{
+ local line i=0
+
+ while read line; do {
+ case $line in
+ [Pp]rocessor*)
+echo $i
+i=$(( $i + 1 ))
+ ;;
+ esac
+ } done /proc/cpuinfo
+}
+
+start()
+{
+ # http://shmilyxbq-compcache.googlecode.com/hg/README
+ # if 1 cpu_core, reinit kmodule with e.g. num_devices=4
+
+
[OpenWrt-Devel] compcache / ramzswap / zram / frontswap
since 2 years we are using zram[0] in our production networks and we love it. i like to kick out the package compcache which is very outdated and just use the mainline implementation. at the moment we are manually go into kernel_menuconfig and switch on: General setup: --- [*] Support for paging of anonymous memory (swap) Device Drivers --- Staging drivers --- [*] Compressed RAM block device support which means: CONFIG_FRONTSWAP is not set CONFIG_SWAP=y CONFIG_HIBERNATION is not set CONFIG_MTD_SWAP is not set CONFIG_ZRAM=y CONFIG_ZRAM_DEBUG is not set CONFIG_ZSMALLOC=y CONFIG_LZO_COMPRESS=y CONFIG_LZO_DECOMPRESS=y also we use our own rc-file, so we can do /etc/init.d/zram start|stop https://github.com/bittorf/kalua/blob/master/openwrt-addons/etc/init.d/zram IMHO it should be a menuconfig-entry in base-system, because it is fundamental for all 16mb routers. What i need for baking a Makefile is a hint for a package which a) activates some symbols in kernel-config b) enforces building and loading of a kmodule c) has an rc-file I'am new to Make, so please help 8-) Also i like to have feedback. For the motivation, the output of a WRT54G running 3.6.11: root@openwrt:~ free total used free shared buffers Mem: 1300411420 15840 696 -/+ buffers: 10724 2280 Swap: 6140 584 5556 bye, bastian [0] https://code.google.com/p/compcache/ ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
