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2014-05-22mmc: sdhci: move FSL ESDHC reset handling quirk into esdhc codeRussell King
The Freescale esdhc driver is the only driver which needs the interrupt registers restored after a reset. Move this quirk to be part of the ESDHC driver implementation. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Markus Pargmann <mpa@pengutronix.de> Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
2014-05-22mmc: sdhci: convert reset into a library functionRussell King
Rather than having platform_reset_enter/platform_reset_exit methods, turn the core of the reset handling into a library function which platforms can call at the appropriate moment in their (new) reset method. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Markus Pargmann <mpa@pengutronix.de> Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
2014-05-22mmc: sdhci: convert generic bus width setup to library functionRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Markus Pargmann <mpa@pengutronix.de> Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
2014-05-22mmc: sdhci: plug hole in disabling card detection interruptsRussell King
When we disable card detection interrupts, we should disable both the insert and remove interrupts irrespective of the current state - this avoids races between the hardware card detect changing state before we've read that updated state and altered the interrupt mask. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Markus Pargmann <mpa@pengutronix.de> Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
2014-05-22mmc: sdhci: more efficient interrupt enable register handlingRussell King
Rather than wasting cycles read-modify-writing the interrupt enable registers, cache the value locally instead. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Markus Pargmann <mpa@pengutronix.de> Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
2014-05-22mmc: sdhci: allow sdio interrupts while sdhci runtime suspendedRussell King
Allow SDIO interrupts to be received while the SDHCI host is runtime suspended. We do this by leaving the AHB clock enabled while the host is runtime suspended so we can access the SDHCI registers, and so read and raise the SDIO card interrupt. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Markus Pargmann <mpa@pengutronix.de> Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
2014-05-22mmc: sdhci: push card_tasklet into threaded irq handlerRussell King
There's no requirement to have the card tasklet separate now that we have a threaded interrupt handler, so kill this and move the called code into the threaded part of the handler. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Markus Pargmann <mpa@pengutronix.de> Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
2014-05-22mmc: sdhci: convert to new SDIO IRQ handlingRussell King
Use a generic threaded interrupt handler for SDIO interrupt handling, rather than allowing the SDIO core code to buggily spawn its own thread. This results in host drivers to be more in control of how SDIO interrupts are acknowledged in the hardware, rather than having the internals of the SDIO core placed upon them, possibly resulting in sub-standard handling. At least one SDHCI implementation specifies a very specific sequence to deal with a card interrupt. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Markus Pargmann <mpa@pengutronix.de> Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
2014-05-22mmc: sdhci: clean up sdio interrupt enable handlingRussell King
We don't need to change the SDHCI_SDIO_IRQ_ENABLED flag when we're merely receiving an interrupt - IRQ handling thread in the MMC core will either re-enable or disable the interrupt via the enable_sdio_irq callback, which will update this status appropriately. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Markus Pargmann <mpa@pengutronix.de> Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
2014-05-22mmc: sdhci: clean up interrupt handlingRussell King
sdhci interrupt handling is a mess; there is a lot of code doing very similar things. Let's clean this up a bit: 1. set's clear down cmd, data and bus power interrupts in one go - we're always going to handle these. 2. use a do { } while () loop for looping while there are pending interrupts. 3. group clearing of bits in intmask into one place. This results in the code becoming simpler and easier to read. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Markus Pargmann <mpa@pengutronix.de> Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
2014-05-22mmc: sdio_irq: rework sdio irq handlingRussell King
Rather than the SDIO support spawning it's own thread for handling card interrupts, use the generic IRQ infrastructure for this, triggering it from the host interface's interrupt handling directly. This avoids a race between the parent thread waiting to receive an interrupt response from the card, and the slow startup from the sdio irq thread, which can occur as a result of high system load (eg, while udev is running.) Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Markus Pargmann <mpa@pengutronix.de> Tested-by: Stephen Warren <swarren@nvidia.com> [Ulf Hansson] Resolved conflict Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
2014-05-22ARM: davinci: remove checks for CONFIG_USB_MUSB_PERIPHERALPaul Bolle
The Kconfig symbol USB_MUSB_PERIPHERAL was removed in v3.1. The last two checks for its macro now always evaluate to false. So remove these checks. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> [nsekhar@ti.com: also cleaned-up usage in defconfig file] Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2014-05-22regulator: palmas: Reemove open coded functions with helper functionsKeerthy
Reemove open coded functions with helper functions. Signed-off-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-22dmaengine: dw: check return code of dma_async_device_register()Andy Shevchenko
dma_async_device_register() may return non-zero error code. In such case we have to follow error path. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-22dmaengine: dw: fix regression in dw_probe() functionAndy Shevchenko
The commit dbde5c29 "dw_dmac: use devm_* functions to simplify code" turns probe function to use devm_* helpers and simultaneously brings a regression. We have to 1) call clk_disable_unprepare() on error path, and 2) check error code of clk_enable_prepare(). First part was done in the original code, second one is an update. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-22dmaengine: dw: enable clock before accessAndy Shevchenko
hclk signal is a bus clock. So, it means we have to have it enabled during access to the DMA controller. This patch makes sure that we enable clock before access to the device, though it currently works on Intel hardware. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-05-22Merge branch 'uprobes/core' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/oleg/misc into perf/uprobes Pull uprobes fixes and changes from Oleg Nesterov: " Denys found another nasty old bug in uprobes/x86: div, mul, shifts with count in CL, and cmpxchg are not handled correctly. Plus a couple of other minor fixes. Nobody acked the changes in x86/traps, hopefully they are simple enough, and I believe that they make sense anyway and allow to do more cleanups." Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-05-22Merge tag 'perf-core-for-mingo' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf into perf/core Pull perf/core improvements and fixes from Jiri Olsa: * Android related fixes for pager and map dso resolving (Michael Lentine) * Add -F option for specifying output fields (Namhyung Kim) Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-05-22Merge branch 'rcu/next' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu Pull RCU updates from Paul E. McKenney: " 1. Update RCU documentation. These were posted to LKML at https://lkml.org/lkml/2014/4/28/634. 2. Miscellaneous fixes. These were posted to LKML at https://lkml.org/lkml/2014/4/28/645. 3. Torture-test changes. These were posted to LKML at https://lkml.org/lkml/2014/4/28/667. 4. Variable-name renaming cleanup, sent separately due to conflicts. This was posted to LKML at https://lkml.org/lkml/2014/5/13/854. 5. Patch to suppress RCU stall warnings while sysrq requests are being processed. This patch is the RCU portions of the patch that Rik posted to LKML at https://lkml.org/lkml/2014/4/29/457. The reason for pushing this patch ahead instead of waiting until 3.17 is that the NMI-based stack traces are messing up sysrq output, and in some cases also messing up the system as well." Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-05-22ARM: dts: sun7i: Add new i12-tvbox boardHans de Goede
The i12 tvbox is an A20 based android tvbox, with 512M / 1G RAM, 4G nand flash, ap6210 or ap6330 sdio wifi + bt (broadcom sdio wifi + uart attached brcm bt), 2USB host ports using USB-A receptacles and a micro-usb receptacle for USB OTG, and 100Mbit ethernet using an IP101a phy. The PCB is labelled i12-a20 hence I've named the board i12-a20. It is used in noname allwinner A20 tv-boxes, which are sometimes sold with Q5 or QT840A as product name. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2014-05-22ARM: dts: sun7i: cubietruck: set mmc3 bus-width propertyHans de Goede
bus-width defaults to 1, and all 4 lines are hooked up at the cubietruck, properly set bus-width to 4. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2014-05-22ARM: edma: Remove redundant/unused parameters from edma_soc_infoPeter Ujfalusi
The following parameters are no longer needed by the edma driver since the information can be obtained from the IP's CCCFG register: n_channel, n_region, n_slot and n_tc. Remove the n_cc as well since in this context it has no meaning. We have separate edma_soc_info struct/eDMA3_CC instance so this member does not make any sense (and the driver no longer uses it). Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2014-05-22ARM: davinci: Remove redundant/unused parameters for edmaPeter Ujfalusi
The following parameters are no longer needed by the edma driver since the information can be obtained from the IP's CCCFG register: n_channel, n_region, n_slot and n_tc. Remove the initialization of n_cc as well since in this context it has no meaning. We have separate edma_soc_info struct/eDMA3_CC instance so this member does not make any sense (and the driver no longer uses it). Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2014-05-22ARM: dts: am4372: Remove obsolete properties from edma nodePeter Ujfalusi
dma-channels, ti,edma-regions and ti,edma-slots no longer needed in DT since the the same information is available in the IP's CCCFG register. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2014-05-22ARM: dts: am33xx: Remove obsolete properties from edma nodePeter Ujfalusi
dma-channels, ti,edma-regions and ti,edma-slots no longer needed in DT since the the same information is available in the IP's CCCFG register. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2014-05-22dt/bindings: ti,edma: Remove redundant properties from documentationPeter Ujfalusi
From CCCFG register of eDMA3 we can get all the needed information for the driver about the IP: Number of channels: NUM_DMACH Number of regions: NUM_REGN Number of slots (PaRAM sets): NUM_PAENTRY Number of TC/EQ: NUM_EVQUE The ti,edma-regions; ti,edma-slots and dma-channels in DT are redundant since the very same information can be obtained from the HW. The mentioned properties are deprecated. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2014-05-22ARM: edma: Get IP configuration from HW (number of channels, tc, etc)Peter Ujfalusi
From CCCFG register of eDMA3 we can get all the needed information for the driver about the IP: Number of channels: NUM_DMACH Number of regions: NUM_REGN Number of slots (PaRAM sets): NUM_PAENTRY Number of TC/EQ: NUM_EVQUE In case when booted with DT or the queue_priority_mapping is not provided set up a default priority map. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Acked-by: Joel Fernandes <joelf@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2014-05-22sched/numa: Decay ->wakee_flips instead of zeroingRik van Riel
Affine wakeups have the potential to interfere with NUMA placement. If a task wakes up too many other tasks, affine wakeups will get disabled. However, regardless of how many other tasks it wakes up, it gets re-enabled once a second, potentially interfering with NUMA placement of other tasks. By decaying wakee_wakes in half instead of zeroing it, we can avoid that problem for some workloads. Signed-off-by: Rik van Riel <riel@redhat.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: chegu_vinod@hp.com Cc: umgwanakikbuti@gmail.com Link: http://lkml.kernel.org/r/20140516001332.67f91af2@annuminas.surriel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-05-22sched/numa: Update migrate_improves/degrades_locality()Rik van Riel
Update the migrate_improves/degrades_locality() functions with knowledge of pseudo-interleaving. Do not consider moving tasks around within the set of group's active nodes as improving or degrading locality. Instead, leave the load balancer free to balance the load between a numa_group's active nodes. Also, switch from the group/task_weight functions to the group/task_fault functions. The "weight" functions involve a division, but both calls use the same divisor, so there's no point in doing that from these functions. On a 4 node (x10 core) system, performance of SPECjbb2005 seems unaffected, though the number of migrations with 2 8-warehouse wide instances seems to have almost halved, due to the scheduler running each instance on a single node. Signed-off-by: Rik van Riel <riel@redhat.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: mgorman@suse.de Cc: chegu_vinod@hp.com Link: http://lkml.kernel.org/r/20140515130306.61aae7db@cuia.bos.redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-05-22sched/numa: Allow task switch if load imbalance improvesRik van Riel
Currently the NUMA balancing code only allows moving tasks between NUMA nodes when the load on both nodes is in balance. This breaks down when the load was imbalanced to begin with. Allow tasks to be moved between NUMA nodes if the imbalance is small, or if the new imbalance is be smaller than the original one. Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Rik van Riel <riel@redhat.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: mgorman@suse.de Cc: chegu_vinod@hp.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: http://lkml.kernel.org/r/20140514132221.274b3463@annuminas.surriel.com
2014-05-22sched/rt: Fix 'struct sched_dl_entity' and dl_task_time() comments, to match ↵xiaofeng.yan
the current upstream code Signed-off-by: xiaofeng.yan <xiaofeng.yan@huawei.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1399605687-18094-1-git-send-email-xiaofeng.yan@huawei.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-05-22sched: Consolidate open coded implementations of nice level frobbing into ↵Dongsheng Yang
nice_to_rlimit() and rlimit_to_nice() Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/a568a1e3cc8e78648f41b5035fa5e381d36274da.1399532322.git.yangds.fnst@cn.fujitsu.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-05-22sched: Initialize rq->age_stamp on processor startCorey Minyard
If the sched_clock time starts at a large value, the kernel will spin in sched_avg_update for a long time while rq->age_stamp catches up with rq->clock. The comment in kernel/sched/clock.c says that there is no strict promise that it starts at zero. So initialize rq->age_stamp when a cpu starts up to avoid this. I was seeing long delays on a simulator that didn't start the clock at zero. This might also be an issue on reboots on processors that don't re-initialize the timer to zero on reset, and when using kexec. Signed-off-by: Corey Minyard <cminyard@mvista.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1399574859-11714-1-git-send-email-minyard@acm.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-05-22sched, nohz: Change rq->nr_running to always use wrappersKirill Tkhai
Sometimes ->nr_running may cross 2 but interrupt is not being sent to rq's cpu. In this case we don't reenable the timer. Looks like this may be the reason for rare unexpected effects, if nohz is enabled. Patch replaces all places of direct changing of nr_running and makes add_nr_running() caring about crossing border. Signed-off-by: Kirill Tkhai <tkhai@yandex.ru> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20140508225830.2469.97461.stgit@localhost Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-05-22sched: Fix the rq->next_balance logic in rebalance_domains() and idle_balance()Jason Low
Currently, in idle_balance(), we update rq->next_balance when we pull_tasks. However, it is also important to update this in the !pulled_tasks case too. When the CPU is "busy" (the CPU isn't idle), rq->next_balance gets computed using sd->busy_factor (so we increase the balance interval when the CPU is busy). However, when the CPU goes idle, rq->next_balance could still be set to a large value that was computed with the sd->busy_factor. Thus, we need to also update rq->next_balance in idle_balance() in the cases where !pulled_tasks too, so that rq->next_balance gets updated without taking the busy_factor into account when the CPU is about to go idle. This patch makes rq->next_balance get updated independently of whether or not we pulled_task. Also, we add logic to ensure that we always traverse at least 1 of the sched domains to get a proper next_balance value for updating rq->next_balance. Additionally, since load_balance() modifies the sd->balance_interval, we need to re-obtain the sched domain's interval after the call to load_balance() in rebalance_domains() before we update rq->next_balance. This patch adds and uses 2 new helper functions, update_next_balance() and get_sd_balance_interval() to update next_balance and obtain the sched domain's balance_interval. Signed-off-by: Jason Low <jason.low2@hp.com> Reviewed-by: Preeti U Murthy <preeti@linux.vnet.ibm.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: daniel.lezcano@linaro.org Cc: alex.shi@linaro.org Cc: efault@gmx.de Cc: vincent.guittot@linaro.org Cc: morten.rasmussen@arm.com Cc: aswin@hp.com Link: http://lkml.kernel.org/r/1399596562.2200.7.camel@j-VirtualBox Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-05-22sched: Use clamp() and clamp_val() to make sys_nice() more readableDongsheng Yang
Suggested-by: Kees Cook <keescook@chromium.org> Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1399541715-19568-1-git-send-email-yangds.fnst@cn.fujitsu.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-05-22sched: Do not zero sg->cpumask and sg->sgp->power in build_sched_groups()Dietmar Eggemann
There is no need to zero struct sched_group member cpumask and struct sched_group_power member power since both structures are already allocated as zeroed memory in __sdt_alloc(). This patch has been tested with BUG_ON(!cpumask_empty(sched_group_cpus(sg))); and BUG_ON(sg->sgp->power); in build_sched_groups() on ARM TC2 and INTEL i5 M520 platform including CPU hotplug scenarios. Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1398865178-12577-1-git-send-email-dietmar.eggemann@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-05-22sched/numa: Fix initialization of sched_domain_topology for NUMAVincent Guittot
Jet Chen has reported a kernel panics when booting qemu-system-x86_64 with kvm64 cpu. A panic occured while building the sched_domain. In sched_init_numa, we create a new topology table in which both default levels and numa levels are copied. The last row of the table must have a null pointer in the mask field. The current implementation doesn't add this last row in the computation of the table size. So we add 1 row in the allocation size that will be used as the last row of the table. The kzalloc will ensure that the mask field is NULL. Reported-by: Jet Chen <jet.chen@intel.com> Tested-by: Jet Chen <jet.chen@intel.com> Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: fengguang.wu@intel.com Link: http://lkml.kernel.org/r/1399972261-25693-1-git-send-email-vincent.guittot@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-05-22sched: Call select_idle_sibling() when not affine_sdRik van Riel
On smaller systems, the top level sched domain will be an affine domain, and select_idle_sibling is invoked for every SD_WAKE_AFFINE wakeup. This seems to be working well. On larger systems, with the node distance between far away NUMA nodes being > RECLAIM_DISTANCE, select_idle_sibling is only called if the waker and the wakee are on nodes less than RECLAIM_DISTANCE apart. This patch leaves in place the policy of not pulling the task across nodes on such systems, while fixing the issue that select_idle_sibling is not called at all in certain circumstances. The code will look for an idle CPU in the same CPU package as the CPU where the task ran previously. Signed-off-by: Rik van Riel <riel@redhat.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: morten.rasmussen@arm.com Cc: george.mccollister@gmail.com Cc: ktkhai@parallels.com Cc: Mel Gorman <mgorman@suse.de> Cc: Mike Galbraith <umgwanakikbuti@gmail.com> Link: http://lkml.kernel.org/r/20140514114037.2d93266f@annuminas.surriel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-05-22sched: Simplify return logic in sched_read_attr()Michael Kerrisk
Gotos are chained pointlessly here, and the 'out' label can be dispensed with. Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/536CEC29.9090503@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-05-22sched: Simplify return logic in sched_copy_attr()Michael Kerrisk
The logic in this function is a little contorted, clean it up: * Rather than having chained gotos for the -EFBIG case, just return -EFBIG directly. * Now, the label 'out' is no longer needed, and 'ret' must be zero zero by the time we fall through to this point, so just return 0. Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/536CEC24.9080201@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-05-22sched: Fix exec_start/task_hot on migrated tasksBen Segall
task_hot checks exec_start on any runnable task, but if it has been migrated since the it last ran, then exec_start is a clock_task from another cpu. If the old cpu's clock_task was sufficiently far ahead of this cpu's then the task will not be considered for another migration until it has run. Instead reset exec_start whenever a task is migrated, since it is presumably no longer hot anyway. Signed-off-by: Ben Segall <bsegall@google.com> [ Made it compile. ] Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/20140515225920.7179.13924.stgit@sword-of-the-dawn.mtv.corp.google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-05-22HID: rmi: do not handle touchscreens through hid-rmiBenjamin Tissoires
Currently, hid-rmi drives every Synaptics product, but the touchscreens on the Windows tablets should be handled through hid-multitouch. Instead of providing a long list of PIDs, rely on the scan_report capability to detect which should go to hid-multitouch, and which should not go to hid-rmi. related bug: https://bugzilla.kernel.org/show_bug.cgi?id=74241 https://bugzilla.redhat.com/show_bug.cgi?id=1089583 Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-05-22ARM: edma: Save number of regions from pdata to struct edmaPeter Ujfalusi
To be consistent in the code that we take parameters from edma_cc[j] struct and not randomly from info[j] as well. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2014-05-22ARM: edma: Remove num_cc member from struct edmaPeter Ujfalusi
The struct edma is allocated per CC bases so the member num_cc does not make any sense. One CC is one CC, it does not have sub CCs. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2014-05-22ARM: edma: Remove queue_tc_mapping data from edma_soc_infoPeter Ujfalusi
It is no longer in use by the driver or board files. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2014-05-22Merge branch 'sched/urgent' into sched/core to avoid conflicts with upcoming ↵Ingo Molnar
changes Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-05-22ARM: sun6i: Add MMC0 controller to the Colombus boardMaxime Ripard
The Colombus has a full size SD slot wired to the MMC0 controller. In order to work, the MMC lines have to have the pull-ups enabled though. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2014-05-22ARM: sun6i: Fix OHCI2 node nameMaxime Ripard
The unit-address doesn't match the reg property. Since the reg property is correct, change the unit-address accordingly. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2014-05-22ARM: sun6i: Enable USB Host support on the Colombus boardMaxime Ripard
The colombus board has a on-board USB hub, that is enabled through the pin PH24, and wired to the first EHCI controller. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>