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2013-04-27xfs: add metadata CRC documentationDave Chinner
Add some documentation about the self describing metadata and the code templates used to implement it. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Ben Myers <bpm@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-04-27Thermal: update documentation for thermal_zone_device_registerZhang Rui
Update kernel Documentation for thermal_zone_device_register. Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2013-04-26KVM: PPC: Book3S: Facilities to save/restore XICS presentation ctrler statePaul Mackerras
This adds the ability for userspace to save and restore the state of the XICS interrupt presentation controllers (ICPs) via the KVM_GET/SET_ONE_REG interface. Since there is one ICP per vcpu, we simply define a new 64-bit register in the ONE_REG space for the ICP state. The state includes the CPU priority setting, the pending IPI priority, and the priority and source number of any pending external interrupt. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-04-26KVM: PPC: Book3S: Add infrastructure to implement kernel-side RTAS callsMichael Ellerman
For pseries machine emulation, in order to move the interrupt controller code to the kernel, we need to intercept some RTAS calls in the kernel itself. This adds an infrastructure to allow in-kernel handlers to be registered for RTAS services by name. A new ioctl, KVM_PPC_RTAS_DEFINE_TOKEN, then allows userspace to associate token values with those service names. Then, when the guest requests an RTAS service with one of those token values, it will be handled by the relevant in-kernel handler rather than being passed up to userspace as at present. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org> [agraf: fix warning] Signed-off-by: Alexander Graf <agraf@suse.de>
2013-04-26KVM: PPC: Support irq routing and irqfd for in-kernel MPICAlexander Graf
Now that all the irq routing and irqfd pieces are generic, we can expose real irqchip support to all of KVM's internal helpers. This allows us to use irqfd with the in-kernel MPIC. Signed-off-by: Alexander Graf <agraf@suse.de>
2013-04-26kvm/ppc/mpic: add KVM_CAP_IRQ_MPICScott Wood
Enabling this capability connects the vcpu to the designated in-kernel MPIC. Using explicit connections between vcpus and irqchips allows for flexibility, but the main benefit at the moment is that it simplifies the code -- KVM doesn't need vm-global state to remember which MPIC object is associated with this vm, and it doesn't need to care about ordering between irqchip creation and vcpu creation. Signed-off-by: Scott Wood <scottwood@freescale.com> [agraf: add stub functions for kvmppc_mpic_{dis,}connect_vcpu] Signed-off-by: Alexander Graf <agraf@suse.de>
2013-04-26kvm/ppc/mpic: in-kernel MPIC emulationScott Wood
Hook the MPIC code up to the KVM interfaces, add locking, etc. Signed-off-by: Scott Wood <scottwood@freescale.com> [agraf: add stub function for kvmppc_mpic_set_epr, non-booke, 64bit] Signed-off-by: Alexander Graf <agraf@suse.de>
2013-04-26kvm: add device control APIScott Wood
Currently, devices that are emulated inside KVM are configured in a hardcoded manner based on an assumption that any given architecture only has one way to do it. If there's any need to access device state, it is done through inflexible one-purpose-only IOCTLs (e.g. KVM_GET/SET_LAPIC). Defining new IOCTLs for every little thing is cumbersome and depletes a limited numberspace. This API provides a mechanism to instantiate a device of a certain type, returning an ID that can be used to set/get attributes of the device. Attributes may include configuration parameters (e.g. register base address), device state, operational commands, etc. It is similar to the ONE_REG API, except that it acts on devices rather than vcpus. Both device types and individual attributes can be tested without having to create the device or get/set the attribute, without the need for separately managing enumerated capabilities. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-04-26KVM: PPC: e500: Add support for EPTCFG registerMihai Caraman
EPTCFG register defined by E.PT is accessed unconditionally by Linux guests in the presence of MAV 2.0. Emulate it now. Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-04-26KVM: PPC: e500: Add support for TLBnPS registersMihai Caraman
Add support for TLBnPS registers available in MMU Architecture Version (MAV) 2.0. Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-04-26KVM: PPC: e500: Expose MMU registers via ONE_REGMihai Caraman
MMU registers were exposed to user-space using sregs interface. Add them to ONE_REG interface using kvmppc_get_one_reg/kvmppc_set_one_reg delegation mechanism. Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-04-26SUNRPC: Use gssproxy upcall for server RPCGSS authentication.Simo Sorce
The main advantge of this new upcall mechanism is that it can handle big tickets as seen in Kerberos implementations where tickets carry authorization data like the MS-PAC buffer with AD or the Posix Authorization Data being discussed in IETF on the krbwg working group. The Gssproxy program is used to perform the accept_sec_context call on the kernel's behalf. The code is changed to also pass the input buffer straight to upcall mechanism to avoid allocating and copying many pages as tokens can be as big (potentially more in future) as 64KiB. Signed-off-by: Simo Sorce <simo@redhat.com> [bfields: containerization, negotiation api] Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2013-04-26gpio: grgpio: Add irq supportAndreas Larsson
The drivers sets up an irq domain and hands out unique irqs to irq capable gpio lines regardless of how underlying irq maps to gpio lines. Any gpio line can map to any one or none of the irqs of the core, independently of each other. Signed-off-by: Andreas Larsson <andreas@gaisler.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-04-26gpio: grgpio: Add device driver for GRGPIO coresAndreas Larsson
This driver supports GRGPIO gpio cores available in the GRLIB VHDL IP core library from Aeroflex Gaisler. Signed-off-by: Andreas Larsson <andreas@gaisler.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-04-26Merge branch '3.10/fb-mmap' into for-nextTomi Valkeinen
Merge topic branch to get vm_iomap_memory into use. Conflicts: drivers/video/fbmon.c
2013-04-25Documentation/devicetree: make semantic of initrd-end more explicitUwe Kleine-König
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2013-04-25hwrng: timeriomem - added devicetree hooksAlexander Clouter
This patch allows timeriomem_rng to be used via devicetree. Signed-off-by: Alexander Clouter <alex@digriz.org.uk> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-04-25hwrng: bcm2835 - Add Broadcom BCM2835 RNG driverLubomir Rintel
This adds a driver for random number generator present on Broadcom BCM2835 SoC, used in Raspberry Pi and Roku 2 devices. Signed-off-by: Dom Cobley <popcornmix@gmail.com> Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Tested-by: Stephen Warren <swarren@wwwdotorg.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Matt Mackall <mpm@selenic.com> Cc: linux-rpi-kernel@lists.infradead.org Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-04-25Merge tag 'asoc-v3.10-3' of ↵Takashi Iwai
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next ASoC: More updates for v3.10 A few more fixes, nothing too major though the DMA changes fix modular builds.
2013-04-25packet: doc: update timestamping partDaniel Borkmann
Bring the timestamping section in sync with the implementation. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-25kconfig: implement KCONFIG_PROBABILITY for randconfigYann E. MORIN
Currently the odds to set each symbol is (rounded): booleans: y: 50% n: 50% tristates: y: 33% m: 33% n: 33% Introduce a KCONFIG_PROBABILITY environment variable to tweak the probabilities (in percentage), as such: KCONFIG_PROBABILITY y:n split y:m:n split ----------------------------------------------------------------- [1] unset or empty 50 : 50 33 : 33 : 34 [2] N N : 100-N N/2 : N/2 : 100-N N:M N+M : 100-(N+M) N : M : 100-(N+M) N:M:L N : 100-N M : L : 100-(M+L) [1] The current behaviour is kept as default, for backward compatibility [2] The solution initially implemented by Peter for Buildroot, see: http://git.buildroot.org/buildroot/commit/?id=3435c1afb5 Signed-off-by: Peter Korsgaard <jacmet@uclibc.org> [yann.morin.1998@free.fr: add to Documentation/] Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2013-04-25kconfig: allow specifying the seed for randconfigYann E. MORIN
For reproducibility, it can be useful to be able to specify the seed to use to seed the RNG. Add a new KCONFIG_SEED environment variable which can be set to the seed to use: $ make KCONFIG_SEED=42 randconfig $ sha1sum .config 70a128c8dcc61303069e1be352cce64114dfcbca .config $ make KCONFIG_SEED=42 randconfig $ sha1sum .config 70a128c8dcc61303069e1be352cce64114dfcbca .config It's very usefull for eg. debugging the kconfig parser. Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2013-04-25thermal: rename notify_thermal_framework to thermal_notify_frameworkEduardo Valentin
To follow the prefix names used by the thermal functions, this patch renames notify_thermal_framework to thermal_notify_framework. Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2013-04-24ARM: mcpm: Add baremetal voting mutexesDave Martin
This patch adds a simple low-level voting mutex implementation to be used to arbitrate during first man selection when no load/store exclusive instructions are usable. For want of a better name, these are called "vlocks". (I was tempted to call them ballot locks, but "block" is way too confusing an abbreviation...) There is no function to wait for the lock to be released, and no vlock_lock() function since we don't need these at the moment. These could straightforwardly be added if vlocks get used for other purposes. For architectural correctness even Strongly-Ordered memory accesses require barriers in order to guarantee that multiple CPUs have a coherent view of the ordering of memory accesses. Whether or not this matters depends on hardware implementation details of the memory system. Since the purpose of this code is to provide a clean, generic locking mechanism with no platform-specific dependencies the barriers should be present to avoid unpleasant surprises on future platforms. Note: * When taking the lock, we don't care about implicit background memory operations and other signalling which may be pending, because those are not part of the critical section anyway. A DMB is sufficient to ensure correctly observed ordering if the explicit memory accesses in vlock_trylock. * No barrier is required after checking the election result, because the result is determined by the store to VLOCK_OWNER_OFFSET and is already globally observed due to the barriers in voting_end. This means that global agreement on the winner is guaranteed, even before the winner is known locally. Signed-off-by: Dave Martin <dave.martin@linaro.org> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Reviewed-by: Will Deacon <will.deacon@arm.com>
2013-04-24ARM: mcpm: introduce helpers for platform coherency exit/setupDave Martin
This provides helper methods to coordinate between CPUs coming down and CPUs going up, as well as documentation on the used algorithms, so that cluster teardown and setup operations are not done for a cluster simultaneously. For use in the power_down() implementation: * __mcpm_cpu_going_down(unsigned int cluster, unsigned int cpu) * __mcpm_outbound_enter_critical(unsigned int cluster) * __mcpm_outbound_leave_critical(unsigned int cluster) * __mcpm_cpu_down(unsigned int cluster, unsigned int cpu) The power_up_setup() helper should do platform-specific setup in preparation for turning the CPU on, such as invalidating local caches or entering coherency. It must be assembler for now, since it must run before the MMU can be switched on. It is passed the affinity level for which initialization should be performed. Because the mcpm_sync_struct content is looked-up and modified with the cache enabled or disabled depending on the code path, it is crucial to always ensure proper cache maintenance to update main memory right away. The sync_cache_*() helpers are used to that end. Also, in order to prevent a cached writer from interfering with an adjacent non-cached writer, we ensure each state variable is located to a separate cache line. Thanks to Nicolas Pitre and Achin Gupta for the help with this patch. Signed-off-by: Dave Martin <dave.martin@linaro.org> Signed-off-by: Nicolas Pitre <nico@linaro.org> Reviewed-by: Will Deacon <will.deacon@arm.com>
2013-04-24doc: devicetree: Fix various typosMasanari Iida
Fix spelling typos in Documentation/devicetree/bindings. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-04-24docbook: fix 8250 naming in device-driversVincent Stehlé
8250 driver has been (re)renamed to 8250_core.c by commit 9196d8acd7f91758872108958dfded7684628444. Follow that change to fix the following error when building htmldocs: docproc: /work/cross/linux//drivers/tty/serial/8250/8250.c: No such file or directory Acked-by: Rob landley <rob@landley.net> Signed-off-by: Vincent Stehlé <v-stehle@ti.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-04-24Merge remote-tracking branch 'origin/master' into nextBenjamin Herrenschmidt
Merge upstream to get the audit fixes
2013-04-24DM RAID: Add message/status support for changing sync actionJonathan Brassow
DM RAID: Add message/status support for changing sync action This patch adds a message interface to dm-raid to allow the user to more finely control the sync actions being performed by the MD driver. This gives the user the ability to initiate "check" and "repair" (i.e. scrubbing). Two additional fields have been appended to the status output to provide more information about the type of sync action occurring and the results of those actions, specifically: <sync_action> and <mismatch_cnt>. These new fields will always be populated. This is essentially the device-mapper way of doing what MD controls through the 'sync_action' sysfs file and shows through the 'mismatch_cnt' sysfs file. Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: NeilBrown <neilb@suse.de>
2013-04-24MD: Fix typos in MD documentationJonathan Brassow
MD: Fix some typos/grammer in MD documentation Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: NeilBrown <neilb@suse.de>
2013-04-23Merge remote-tracking branch 'asoc/topic/davinci' into asoc-nextMark Brown
2013-04-23staging: video: imx: Add BGR666 support for parallel displayMarek Vasut
Support the BGR666 format on the IPUv3 parallel display. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Philipp Zabel <p.zabel@pengutronix.de> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-23staging: dwc2: add platform device bindingsMatthijs Kooijman
This adds a dwc_platform.ko module that can be loaded by using compatible = "snps,dwc2" in a device tree. Signed-off-by: Matthijs Kooijman <matthijs@stdin.nl> Signed-off-by: Paul Zimmerman <paulz@synopsys.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-23cpuidle: make a single register function for allDaniel Lezcano
The usual scheme to initialize a cpuidle driver on a SMP is: cpuidle_register_driver(drv); for_each_possible_cpu(cpu) { device = &per_cpu(cpuidle_dev, cpu); cpuidle_register_device(device); } This code is duplicated in each cpuidle driver. On UP systems, it is done this way: cpuidle_register_driver(drv); device = &per_cpu(cpuidle_dev, cpu); cpuidle_register_device(device); On UP, the macro 'for_each_cpu' does one iteration: #define for_each_cpu(cpu, mask) \ for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)mask) Hence, the initialization loop is the same for UP than SMP. Beside, we saw different bugs / mis-initialization / return code unchecked in the different drivers, the code is duplicated including bugs. After fixing all these ones, it appears the initialization pattern is the same for everyone. Please note, some drivers are doing dev->state_count = drv->state_count. This is not necessary because it is done by the cpuidle_enable_device function in the cpuidle framework. This is true, until you have the same states for all your devices. Otherwise, the 'low level' API should be used instead with the specific initialization for the driver. Let's add a wrapper function doing this initialization with a cpumask parameter for the coupled idle states and use it for all the drivers. That will save a lot of LOC, consolidate the code, and the modifications in the future could be done in a single place. Another benefit is the consolidation of the cpuidle_device variable which is now in the cpuidle framework and no longer spread accross the different arch specific drivers. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Conflicts: drivers/net/ethernet/emulex/benet/be_main.c drivers/net/ethernet/intel/igb/igb_main.c drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c include/net/scm.h net/batman-adv/routing.c net/ipv4/tcp_input.c The e{uid,gid} --> {uid,gid} credentials fix conflicted with the cleanup in net-next to now pass cred structs around. The be2net driver had a bug fix in 'net' that overlapped with the VLAN interface changes by Patrick McHardy in net-next. An IGB conflict existed because in 'net' the build_skb() support was reverted, and in 'net-next' there was a comment style fix within that code. Several batman-adv conflicts were resolved by making sure that all calls to batadv_is_my_mac() are changed to have a new bat_priv first argument. Eric Dumazet's TS ECR fix in TCP in 'net' conflicted with the F-RTO rewrite in 'net-next', mostly overlapping changes. Thanks to Stephen Rothwell and Antonio Quartulli for help with several of these merge resolutions. Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-21hwmon: (tmp401) Add support for TMP432Guenter Roeck
TMP432 is similar to TMP431 with a second external temperature sensor. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jean Delvare <khali@linux-fr.org>
2013-04-21Merge branch 'perf/urgent' into perf/coreIngo Molnar
Conflicts: arch/x86/kernel/cpu/perf_event_intel.c Merge in the latest fixes before applying new patches, resolve the conflict. Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-04-20Merge branch 'x86-kdump-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull kdump fixes from Peter Anvin: "The kexec/kdump people have found several problems with the support for loading over 4 GiB that was introduced in this merge cycle. This is partly due to a number of design problems inherent in the way the various pieces of kdump fit together (it is pretty horrifically manual in many places.) After a *lot* of iterations this is the patchset that was agreed upon, but of course it is now very late in the cycle. However, because it changes both the syntax and semantics of the crashkernel option, it would be desirable to avoid a stable release with the broken interfaces." I'm not happy with the timing, since originally the plan was to release the final 3.9 tomorrow. But apparently I'm doing an -rc8 instead... * 'x86-kdump-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: kexec: use Crash kernel for Crash kernel low x86, kdump: Change crashkernel_high/low= to crashkernel=,high/low x86, kdump: Retore crashkernel= to allocate under 896M x86, kdump: Set crashkernel_low automatically
2013-04-20Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Peter Anvin: "Three groups of fixes: 1. Make sure we don't execute the early microcode patching if family < 6, since it would touch MSRs which don't exist on those families, causing crashes. 2. The Xen partial emulation of HyperV can be dealt with more gracefully than just disabling the driver. 3. More EFI variable space magic. In particular, variables hidden from runtime code need to be taken into account too." * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, microcode: Verify the family before dispatching microcode patching x86, hyperv: Handle Xen emulation of Hyper-V more gracefully x86,efi: Implement efi_no_storage_paranoia parameter efi: Export efi_query_variable_store() for efivars.ko x86/Kconfig: Make EFI select UCS2_STRING efi: Distinguish between "remaining space" and actually used space efi: Pass boot services variable info to runtime code Move utf16 functions to kernel core and rename x86,efi: Check max_size only if it is non-zero. x86, efivars: firmware bug workarounds should be in platform code
2013-04-19Merge remote-tracking branch 'efi/urgent' into x86/urgentH. Peter Anvin
Matt Fleming (1): x86, efivars: firmware bug workarounds should be in platform code Matthew Garrett (3): Move utf16 functions to kernel core and rename efi: Pass boot services variable info to runtime code efi: Distinguish between "remaining space" and actually used space Richard Weinberger (2): x86,efi: Check max_size only if it is non-zero. x86,efi: Implement efi_no_storage_paranoia parameter Sergey Vlasov (2): x86/Kconfig: Make EFI select UCS2_STRING efi: Export efi_query_variable_store() for efivars.ko Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2013-04-19Merge branch 'next/drivers' into late/multiplatformArnd Bergmann
Multiple parts of next/drivers are prerequisites for the final exynos multiplatform changes, so let's pull in the entire branch. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-04-19Merge branch 'spear/dwdma' into late/cleanupArnd Bergmann
This is a series originally prepared for inclusion in 3.9, which did not work out because of dependencies on the dmaengine driver. All the changes for the dmaengine code are merged in 3.9 now, so we can finally do the switchover and remove the now unnecessary dma definitions for spear13xx from the platform code. The dma platform_data actually made up the majority of the spear13xx platform code overall, so moving that into device tree files makes the code substantially smaller. * spear/dwdma: ata: arasan: remove the need for platform_data ARM: SPEAr13xx: Pass generic DW DMAC platform data from DT serial: pl011: use generic DMA slave configuration if possible spi: pl022: use generic DMA slave configuration if possible Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-04-19ata: arasan: remove the need for platform_dataArnd Bergmann
This adds a complete DT binding for the arasan device driver. There is currently only one user, which is the spear13xx platform, so we don't actually have to parse all the properties until another user comes in, but this does use the generic DMA binding to find the DMA channel. The patch is untested so far and is part of a series to convert the spear platform over to use the generic DMA binding, so it should stay with the rest of the series. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Viresh Kumar <viresh.linux@linaro.org> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Jeff Garzik <jgarzik@redhat.com> Cc: devicetree-discuss@lists.ozlabs.org
2013-04-19netlink: add documentation for memory mapped I/OPatrick McHardy
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-19iommu/amd: Document ivrs_ioapic and ivrs_hpet parametersJoerg Roedel
Document the new kernel commandline parameters in the appropriate file. Reviewed-by: Shuah Khan <shuahkhan@gmail.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-04-19nohz: Ensure full dynticks CPUs are RCU nocbsFrederic Weisbecker
We need full dynticks CPU to also be RCU nocb so that we don't have to keep the tick to handle RCU callbacks. Make sure the range passed to nohz_full= boot parameter is a subset of rcu_nocbs= The CPUs that fail to meet this requirement will be excluded from the nohz_full range. This is checked early in boot time, before any CPU has the opportunity to stop its tick. Suggested-by: Steven Rostedt <rostedt@goodmis.org> Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Christoph Lameter <cl@linux.com> Cc: Geoff Levand <geoff@infradead.org> Cc: Gilad Ben Yossef <gilad@benyossef.com> Cc: Hakan Akkan <hakanakkan@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Kevin Hilman <khilman@linaro.org> Cc: Li Zhong <zhong@linux.vnet.ibm.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de>
2013-04-19nohz: Force boot CPU outside full dynticks rangeFrederic Weisbecker
The timekeeping job must be able to run early on boot because there may be some pre-SMP (and thus pre-initcalls ) components that rely on it. The IO-APIC is one such users as it tests the timer health by watching jiffies progression. Given that it happens before we know the initial online set, we can't rely on it to select a timekeeper. We need one before SMP time otherwise we simply crash on boot. To fix this and keep things simple for now, force the boot CPU outside of the full dynticks range in any case and do this early on kernel parameter parsing time. We might want a trickier solution later, expecially for aSMP architectures that need to assign housekeeping tasks to arbitrary low power CPUs. But it's still first pass KISS time for now. Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Christoph Lameter <cl@linux.com> Cc: Geoff Levand <geoff@infradead.org> Cc: Gilad Ben Yossef <gilad@benyossef.com> Cc: Hakan Akkan <hakanakkan@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Kevin Hilman <khilman@linaro.org> Cc: Li Zhong <zhong@linux.vnet.ibm.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de>
2013-04-18[media] v4l2: Add a V4L2 driver for SI476X MFDAndrey Smirnov
This commit adds a driver that exposes all the radio related functionality of the Si476x series of chips via the V4L2 subsystem. [mchehab@redhat.com: change it to depends on MFD_SI476X_CORE instead of selecting it; vidioc_s_register now uses const struct] Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-04-19mfd: wm8994: Add some OF propertiesMark Brown
Add properties for some of the more important bits of platform data and fill out the binding document. Not all of the current platform data is suitable for the sort of fixed configuration that is done using DT, some of it should have runtime mechanisms added instead and some is unlikely to ever be used in practical systems. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-04-18Merge tag 'asoc-v3.10-2' of ↵Takashi Iwai
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next ASoC: More updates for v3.10 The main additional change here is Lars-Peter's DMA work plus the platform conversions which have been tested - getting this in mainline will make life easier for development after the merge window. These factor a large chunk of code out of the drivers for the platforms using dmaengine, greatly simplifying development.