- 27 May, 2010 40 commits
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KAMEZAWA Hiroyuki authored
Considering containers or other resource management softwares in userland, event notification of OOM in memcg should be implemented. Now, memcg has "threshold" notifier which uses eventfd, we can make use of it for oom notification. This patch adds oom notification eventfd callback for memcg. The usage is very similar to threshold notifier, but control file is memory.oom_control and no arguments other than eventfd is required. % cgroup_event_notifier /cgroup/A/memory.oom_control dummy (About cgroup_event_notifier, see Documentation/cgroup/) Signed-off-by:
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: David Rientjes <rientjes@google.com> Cc: Davide Libenzi <davidel@xmailserver.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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KAMEZAWA Hiroyuki authored
memcg's oom waitqueue is a system-wide wait_queue (for handling hierarchy.) So, it's better to add custom wake function and do filtering in wake up path. This patch adds a filtering feature for waking up oom-waiters. Hierarchy is properly handled. Signed-off-by:
Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: David Rientjes <rientjes@google.com> Signed-off-by:
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Trevor Woerner authored
Signed-off-by:
Trevor Woerner <twoerner@gmail.com> Cc: Paul Menage <menage@google.com> Signed-off-by:
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Arce, Abraham authored
- Add additional location (Git) for the kernel master tree - Add reference to Git Project Signed-off-by:
Abraham Arce <x0066660@ti.com> Acked-by:
Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by:
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Thomas Stewart authored
I recently had to recover some files from an old broken machine that was running BorderWare Document Gateway. It's basically a drop in web server for sharing files. From the look of the init process and using strings on of a few files it seems to be based on FreeBSD 3.3. The process turned out to be more difficult than I imagined, but to cut a long story short BorderWare in their wisdom use a nonstandard magic number in their UFS (ufstype=44bsd) file systems. Thus Linux refuses to mount the file systems in order to recover the data. After a bit of hunting I was able to make a quick fix to fs/ufs/super.c in order to detect the new magic number. I assume that this number is the same for all installations. It's quite easy to find out from ufs_fs.h. The superblock sits 8k into the block device and the magic number its 1372 bytes into the superblock struct. # dd if=/dev/sda5 skip=$(( 8192 + 1372 )) bs=1 count=4 2> /dev/null | hd 00000000 97 26 24 0f |.&$.| # Signed-off-by:
Thomas Stewart <thomas@stewarts.org.uk> Cc: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by:
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Julia Lawall authored
Use memdup_user when user data is immediately copied into the allocated region. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression from,to,size,flag; position p; identifier l1,l2; @@ - to = \(kmalloc@p\|kzalloc@p\)(size,flag); + to = memdup_user(from,size); if ( - to==NULL + IS_ERR(to) || ...) { <+... when != goto l1; - -ENOMEM + PTR_ERR(to) ...+> } - if (copy_from_user(to, from, size) != 0) { - <+... when != goto l2; - -EFAULT - ...+> - } // </smpl> Signed-off-by:
Julia Lawall <julia@diku.dk> Signed-off-by:
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Mike Frysinger authored
The current backlight code is stubbed out, so the new props changes added some warnings: drivers/video/bf54x-lq043fb.c: In function 'bfin_bf54x_probe': drivers/video/bf54x-lq043fb.c:666: warning: label 'out9' defined but not used drivers/video/bf54x-lq043fb.c:504: warning: unused variable 'props' Fix em ! Signed-off-by:
Mike Frysinger <vapier@gentoo.org> Signed-off-by:
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Mike Frysinger authored
The current backlight code is stubbed out, so the new props changes added some warnings about unused label/prop. Signed-off-by:
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Julia Lawall authored
Use memdup_user when user data is immediately copied into the allocated region. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression from,to,size,flag; position p; identifier l1,l2; @@ - to = \(kmalloc@p\|kzalloc@p\)(size,flag); + to = memdup_user(from,size); if ( - to==NULL + IS_ERR(to) || ...) { <+... when != goto l1; - -ENOMEM + PTR_ERR(to) ...+> } - if (copy_from_user(to, from, size) != 0) { - <+... when != goto l2; - -EFAULT - ...+> - } // </smpl> Signed-off-by:
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Ondrej Zary authored
Add support for S3 Trio3D/1X (86C360) and S3 Trio3D/2X (86C362 and 86C368) cards to s3fb driver. Tested with 86C362 AGP and 86C368 PCI&AGP. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:
Ondrej Zary <linux@rainbow-software.org> Acked-by:
Ondrej Zajicek <santiago@crfreenet.org> Signed-off-by:
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Daniel Mack authored
This eliminates the following build warning: drivers/gpio/it8761e_gpio.c: In function `it8761e_gpio_exit': drivers/gpio/it8761e_gpio.c:220: warning: ignoring return value of `gpiochip_remove', declared with attribute warn_unused_result Signed-off-by:
Daniel Mack <daniel@caiaq.de> Cc: Denis Turischev <denis@compulab.co.il> Signed-off-by:
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Alek Du authored
Intel Penwell chip has two 96 pins GPIO blocks, which are very similiar as Intel Langwell chip GPIO block, except for pin number difference. This patch expends the original Langwell GPIO driver to support Penwell's. Signed-off-by:
Alek Du <alek.du@intel.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by:
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Felipe Balbi authored
Nobody uses that anymore, so remove and expect drivers to use the gpiolib implementation. Signed-off-by:
Felipe Balbi <felipe.balbi@nokia.com> Cc: Tony Lindgren <tony@atomide.com> Cc: David Brownell <david-b@pacbell.net> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by:
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Felipe Balbi authored
Stop using the omap-specific implementations for gpio debouncing now that gpiolib provides its own support. Signed-off-by:
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Felipe Balbi authored
OMAP supports debouncing of gpio lines, implement the method using gpiolib. Signed-off-by:
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Felipe Balbi authored
A few architectures, like OMAP, allow you to set a debouncing time for the gpio before generating the IRQ. Teach gpiolib about that. Mark said: : This would be generally useful for embedded systems, especially where : the interrupt concerned is a wake source. It allows drivers to avoid : spurious interrupts from noisy sources so if the hardware supports it : the driver can avoid having to explicitly wait for the signal to become : stable and software has to cope with fewer events. We've lived without : it for quite some time, though. David said: : I looked at adding debounce support to the generic GPIO calls (and thus : gpiolib) some time back, but decided against it. I forget why at this : time (check list archives) but it wasn't because of lack of utility in : certain contexts. : : One thing to watch out for is just how variable the hardware capabilities : are. Atmel GPIOs have something like a fixed number of 32K clock cycles : for debounce, twl4030 had something odd, OMAPs were more like the Atmel : chips but with a different clock. In some cases debouncing had to be : ganged, not per-GPIO. And so forth. Signed-off-by:
Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by:
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Ben Dooks authored
The current message, 'not registered' is confusing as it implies it was not registered with something, whereas printing 'failed to register' implies it was the gpiochip_add() call that did not work correctly. Signed-off-by:
Ben Dooks <ben-linux@fluff.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by:
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Marc Zyngier authored
Fix a bug I noticed while hacking on the max732x driver for interrupt support. According to the datasheets, open-drain pins have to be configured as output-high (which in that case is actually high impedance) to be used as input. Signed-off-by:
Marc Zyngier <maz@misterjones.org> Acked-by:
Eric Miao <eric.y.miao@gmail.com> Signed-off-by:
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Axel Lin authored
Setup both client_group_a and client_group_b if nr_port > 8 (not including nr_port==8). Signed-off-by:
Axel Lin <axel.lin@gmail.com> Cc: Eric Miao <eric.miao@marvell.com> Cc: Ben Dooks <ben-linux@fluff.org> Signed-off-by:
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Axel Lin authored
The valid offset value is 0..PL061_GPIO_NR-1, this patch corrects the offset value range checking. Signed-off-by:
Baruch Siach <baruch@tkos.co.il> Signed-off-by:
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Uwe Kleine-König authored
Signed-off-by:
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: David Brownell <david-b@pacbell.net> Signed-off-by:
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Uwe Kleine-König authored
Signed-off-by:
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Uwe Kleine-König authored
gpiolib doesn't need to modify the names and I assume most initializers use string constants that shouldn't be modified anyhow. [akpm@linux-foundation.org: fix drivers/gpio/cs5535-gpio.c] Signed-off-by:
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Marc Zyngier authored
Most of the GPIO expanders supported by the max732x driver have interrupt generation capability by reporting changes on input pins through an INT# pin. This patch implements the irq_chip functionnality (edge detection only). Signed-off-by:
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Virupax Sadashivpetimath authored
Add a driver for the RTC on the AB8500 power management chip. This is a client of the AB8500 MFD driver. Signed-off-by:
Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com> Signed-off-by:
Rabin Vincent <rabin.vincent@stericsson.com> Acked-by:
Linus Walleij <linus.walleij@stericsson.com> Acked-by:
Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by:
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Julia Lawall authored
Use memdup_user when user data is immediately copied into the allocated region. Elimination of the variable ads, which is no longer useful. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression from,to,size,flag; position p; identifier l1,l2; @@ - to = \(kmalloc@p\|kzalloc@p\)(size,flag); + to = memdup_user(from,size); if ( - to==NULL + IS_ERR(to) || ...) { <+... when != goto l1; - -ENOMEM + PTR_ERR(to) ...+> } - if (copy_from_user(to, from, size) != 0) { - <+... when != goto l2; - -EFAULT - ...+> - } // </smpl> Signed-off-by:
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Julia Lawall authored
Use memdup_user when user data is immediately copied into the allocated region. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression from,to,size,flag; position p; identifier l1,l2; @@ - to = \(kmalloc@p\|kzalloc@p\)(size,flag); + to = memdup_user(from,size); if ( - to==NULL + IS_ERR(to) || ...) { <+... when != goto l1; - -ENOMEM + PTR_ERR(to) ...+> } - if (copy_from_user(to, from, size) != 0) { - <+... when != goto l2; - -EFAULT - ...+> - } // </smpl> Signed-off-by:
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Julia Lawall authored
Use memdup_user when user data is immediately copied into the allocated region. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression from,to,size,flag; position p; identifier l1,l2; @@ - to = \(kmalloc@p\|kzalloc@p\)(size,flag); + to = memdup_user(from,size); if ( - to==NULL + IS_ERR(to) || ...) { <+... when != goto l1; - -ENOMEM + PTR_ERR(to) ...+> } - if (copy_from_user(to, from, size) != 0) { - <+... when != goto l2; - -EFAULT - ...+> - } // </smpl> Signed-off-by:
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Julia Lawall authored
Use ERR_CAST(x) rather than ERR_PTR(PTR_ERR(x)). The former makes more clear what is the purpose of the operation, which otherwise looks like a no-op. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ type T; T x; identifier f; @@ T f (...) { <+... - ERR_PTR(PTR_ERR(x)) + x ...+> } @@ expression x; @@ - ERR_PTR(PTR_ERR(x)) + ERR_CAST(x) // </smpl> Signed-off-by:
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Viresh KUMAR authored
Add a glue layer to support the sdhci driver on the ST SPEAr platform. Signed-off-by:
Viresh Kumar <viresh.kumar@st.com> Cc: <shiraz.hashim@st.com> Cc: Linus Walleij <linus.ml.walleij@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: <linux-mmc@vger.kernel.org> Signed-off-by:
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Grazvydas Ignotas authored
SDIO specification allows RAW (Read after Write) operation using IO_RW_DIRECT command (CMD52) by setting the RAW bit. This operation is similar to ordinary read/write commands, except that both write and read are performed using single command/response pair. The Linux SDIO layer already supports this internaly, only external function is missing for drivers to make use, which is added by this patch. This type of command is required to implement proper power save mode support in wl1251 wifi driver. Android has similar patch for G1 in it's tree for the same reason: http://android.git.kernel.org/?p=kernel/common.git;a=commitdiff;h=74a47786f6ecbe6c1cf9fb15efe6a968451deb52Signed-off-by:
Grazvydas Ignotas <notasas@gmail.com> Acked-by:
Kalle Valo <kalle.valo@iki.fi> Cc: Dmitry Shmidt <dimitrysh@google.com> Cc: <linux-mmc@vger.kernel.org> Signed-off-by:
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Matt Fleming authored
Even though many mmc host drivers pass a pm_message_t argument to mmc_suspend_host() that argument isn't used the by MMC core. As host drivers are converted to dev_pm_ops they'll have to construct pm_message_t's (as they won't be passed by the PM subsystem any more) just to appease the mmc suspend interface. We might as well just delete the unused paramter. Signed-off-by:
Matt Fleming <matt@console-pimps.org> Acked-by:
Anton Vorontsov <cbouatmailru@gmail.com> Acked-by: Michal Miroslaw <mirq-linux@rere.qmqm.pl>ZZ Acked-by:
Sascha Sommer <saschasommer@freenet.de> Cc: <linux-mmc@vger.kernel.org> Signed-off-by:
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Kevin Hilman authored
Convert PM operations to use dev_pm_ops. This will facilitate the runtime PM coversion which will add to dev_pm_ops hooks. Note that dev_pm_ops version of the suspend hook no longer takes a 'state' argument. However, the MMC core function mmc_suspend_host() still takes a 'state' argument, but it is unused, so a dummy state variable was created to pass to the MMC core. In the future, the MMC core should be converted to drop this state argument and the rest of the MMC drivers could be easily converted to dev_pm_ops as well. Signed-off-by:
Kevin Hilman <khilman@deeprootsystems.com> Cc: Madhusudhan Chikkature <madhu.cr@ti.com> Cc: Adrian Hunter <adrian.hunter@nokia.com> Cc: Matt Fleming <matt@console-pimps.org> Cc: Tony Lindgren <tony@atomide.com> Cc: Denis Karpov <ext-denis.2.karpov@nokia.com> Cc: <linux-mmc@vger.kernel.org> Signed-off-by:
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Adrian Hunter authored
The following changes were needed: - do not use in_interrupt() because it will not work with threaded interrupts In addition, the following improvements were made: - ensure DMA is unmapped only after the final DMA interrupt - ensure a request is completed only after the final DMA interrupt - disable controller interrupts when a request is not in progress - remove the spin-lock protecting the start of a new request from an unexpected interrupt because the locking was complicated and a 'req_in_progress' flag suffices (since the spin-lock only defers the unexpected interrupts anyway) - instead use the spin-lock to protect the MMC interrupt handler from the DMA interrupt handler - remove the semaphore preventing DMA from being started while the previous DMA is still in progress - the other changes make that impossible, so it is now a BUG_ON condition - ensure the controller interrupt status is clear before exiting the interrrupt handler In general, these changes make the code safer but do not fix any specific bugs so backporting is not necessary. Signed-off-by:
Adrian Hunter <adrian.hunter@nokia.com> Tested-by:
Venkatraman S <svenkatr@ti.com> Acked-by:
Madhusudhan Chikkature <madhu.cr@ti.com> Acked-by:
Tony Lindgren <tony@atomide.com> Cc: <linux-mmc@vger.kernel.org> Signed-off-by:
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Maurus Cuelenaere authored
Wifi over SDIO doesn't work correctly without multiblock, so enable this. This patch depends on the following patches: Signed-off-by:
Maurus Cuelenaere <mcuelenaere@gmail.com> Cc: Thomas Abraham <thomas.ab@samsung.com> Cc: Ben Dooks <ben-linux@fluff.org> Cc: <linux-mmc@vger.kernel.org> Signed-off-by:
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Thomas Abraham authored
Enable the ADMA feature in the 6410 SDHCI controller driver. Signed-off-by:
Thomas Abraham <thomas.ab@samsung.com> Acked-by:
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Thomas Abraham authored
The s3c6410 sdhci controller does not support the 'End' attribute and NOP attribute in the same 8-Byte ADMA descriptor. This patch adds a new quirk to identify sdhci host contollers with such behaviour. In addition to this, for controllers using the new quirk, the last entry in the ADMA descritor table is marked with the 'End' attribute (instead of using a NOP descriptor with 'End' attribute). Signed-off-by:
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Matt Fleming authored
Unfortunately some architectures #define their read{b,w,l} and write{b,w,l} I/O accessors which makes the SDHCI I/O accessor functions of the same names subject to preprocessing. This leads to the following compiler error, In file included from drivers/mmc/host/sdhci.c:26: drivers/mmc/host/sdhci.h:318:35: error: macro "writel" passed 3 arguments, but takes just 2 Rename the SDHCI I/O functions so that CONFIG_MMC_SDHCI_IO_ACCESSORS can be enabled for architectures that implement their read{b,w,l} and write{b,w,l} functions with macros. Signed-off-by:Wolfram Sang <w.sang@pengutronix.de> Acked-by:
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Zhangfei Gao authored
Signed-off-by:
Zhangfei Gao <zgao6@marvell.com> Reviewed-by:
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Anders Grahn authored
Atmel-mci support for SDIO interrupts. This adds the enable_sdio_irq() function and the configuration of sdio irq mask per slot. With this irq mask information, we keep the idea of multiple slot per sd/mmc host (not only A and B). MMC_CAP_SDIO_IRQ is added according to slot configuration. A new little function is added to run mmc_signal_sdio_irq() during interrupt handling routine. Signed-off-by:
Anders Grahn <anders.grahn@hd-wireless.se> Signed-off-by:
Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: <linux-mmc@vger.kernel.org> Signed-off-by:
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