- 25 Oct, 2010 28 commits
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Sebastian Ott authored
This patch adds a notification mechanism to inform ccw drivers about changes to channel paths, which occured while the device is online. Signed-off-by:
Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com>
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Sebastian Ott authored
Update the subchannel descriptor while resuming from hibernate in order to obtain current link addresses. Signed-off-by:
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Sebastian Ott authored
Update the channel path descriptors after hibernation. This is done unlocked, since we are the only active task at this time. Note: chsc_determine_base_channel_path_desc is changed to use spin_lock_irqsave, since it's called with interrupts disabled in this case. Signed-off-by:
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Sebastian Ott authored
Update the channel path descriptor at the beginning of to the vary_on operation. Signed-off-by:
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Sebastian Ott authored
chsc_determine_channel_path_desc is called by a wrapper who allocates a response struct. The response data is then memcpy'ed to this response struct by chsc_determine_channel_path_desc. Change chsc_determine_base_channel_path_desc to use the global chsc_page and deliver it to the function doing the actual chsc call. The channel path desriptor is then directly read from the response data. As a result we get rid of the additional allocation for the response struct. Signed-off-by:
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Sebastian Ott authored
Most wrappers around the channel subsystem call have their own logic to allocate memory (with proper alignment) or use preallocated or static memory. This patch converts most users of the channel subsystem call to use the same preallocated page (proteced by a spinlock). Note: The sei_page which is used in our crw handler to call "store event information" has to coexist, since a) in crw context, while accessing the sei_page, sleeping is allowed (which will conflict with the spinlock protection of the chsc_page) b) in crw context, while accessing the sei_page, channel subsystem calls are allowed (which itself would require the page). Signed-off-by:
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Sebastian Ott authored
This patch fixes: * kfree vs. free_page usage * structure definition for determine_css_characteristics * naming convention for the chsc init function * deregistration of crw handlers in the cleanup path Signed-off-by:
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Sebastian Ott authored
Serialize access to members of struct channel_path with a mutex. Signed-off-by:
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Sebastian Ott authored
If a ccwdevice is lost during hibernation and a different ccwdevice is attached to the same subchannel, we will deregister the old ccw device and register the new one. Since deregistration is not allowed in this context, we handle this action later. However, some parts of the registration process for the new device were started anyway, so that the old device structure is no longer accessible. Fix this by deferring both actions to the afterwards scheduled subchannel event. Signed-off-by:
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Andy Shevchenko authored
Signed-off-by:
Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by:
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Stefan Haberland authored
The dasd_eckd_dump_sense_dbf function uses a macro for s390 debug feature that can handle up to 8 parameters (for the DASD device driver). Fix the function to use only the maximum number of parameters. Signed-off-by:
Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by:
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Sebastian Ott authored
fix this sparse warning: drivers/s390/cio/css.c:580:6: warning: symbol 'css_schedule_eval_all_unreg' was not declared. Should it be static? Signed-off-by:
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Hendrik Brueckner authored
If the iucv_register() functions fails, the error recovery calls iucv_unregister() which might cause the following stack backtrace: (<0000000000100ab2> show_trace+0xee/0x144) <00000000004f1842> panic+0xb6/0x248 <00000000001010a6> die+0x15a/0x16c <000000000011d936> do_no_context+0xa6/0xe4 <00000000004f84dc> do_protection_exception+0x2e8/0x3a4 <0000000000113afc> pgm_exit+0x0/0x14 <00000000004e786e> iucv_unregister+0x5a/0x17c (<00000000004e785e> iucv_unregister+0x4a/0x17c) <000000000076de74> hvc_iucv_init+0x228/0x5dc <00000000001000c2> do_one_initcall+0x3e/0x19c <00000000007524a2> kernel_init+0x28e/0x404 <0000000000105dd6> kernel_thread_starter+0x6/0xc <0000000000105dd0> kernel_thread_starter+0x0/0xc Remove the call to iucv_unregister() and remove the goto label as unregistering is the last step in the hvc_iucv initialization. If iucv_register() fails, simply clean up hvc terminals and free resources. Signed-off-by:
Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by:
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Heiko Carstens authored
When the cmm module is compiled into the kernel it will crash when writing to the R/O data section. Reason is the lower to upper case conversion of the "sender" module parameter which ignored the fact that the pointer is preinitialized. Introduced with 41b42876 "cmm, smsgiucv_app: convert sender to uppercase" Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
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Joe Perches authored
Signed-off-by:
Joe Perches <joe@perches.com> Signed-off-by:
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Heiko Carstens authored
schedule() makes sure that prev != next before calling switch_to(). Therefore remove the redundant check. Signed-off-by:
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Heiko Carstens authored
If the previous task was a kernel thread there is no need to save the contents of the fpu and access registers since they aren't used in kernel mode. For the same reason it is not necessary to restore these registers if the next task is a kernel thread. Signed-off-by:
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Heiko Carstens authored
Add a kernel config option for the IBM zEnterprise 196. This will produce faster code on newer compilers using the -march=z196 option. Signed-off-by:
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Heiko Carstens authored
Display machine capacity adjustment indicator and capacity change reason if available in /proc/sysinfo. Signed-off-by:
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Martin Schwidefsky authored
Add the new instructions introduced with z196 to the kernel disassembler. Signed-off-by: -
Martin Schwidefsky authored
Improve performance of the sske operation by using the nonquiescing variant if the affected page has no mappings established. On machines with no support for the new sske variant the mask bit will be ignored. Signed-off-by: -
Martin Schwidefsky authored
Use the store indication bit in the translation exception code on page faults to avoid the protection faults that immediatly follow the page fault if the access has been a write. Signed-off-by: -
Heiko Carstens authored
There is no difference if cpu_die is called from enabled or disabled context. Except that the fast_gup code might be called via cpu_die -> idle_task_exit -> __mm_drop -> crst_table_free. Which in turn grabs and releases a spinlock using the _bh ops, which is not allowed in irq disabled context, since spin_unlock_bh will unconditionally enable interrupts again. To get rid of the warning emitted by the softirq code just move the code to enabled context. In this case this doesn't fix a bug, we just get rid of a warning. Signed-off-by:
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Martin Schwidefsky authored
Implement get_user_pages_fast without locking in the fastpath on s390. Signed-off-by: -
Christof Schmitt authored
Set ARCH_HAS_SG_CHAIN for scatter lists on s390. Without this flag the SCSI code limits the maximum number of segments, so set it to make proper use of the FCP channel hardware. Signed-off-by:
Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by:
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Heiko Carstens authored
Introducing this Kbuild file allow us to: make arch/s390/ And thus building all the core part of s390. Same as on other architectures. Signed-off-by:
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Stefan Weinhuber authored
The usual way to recover a failed DASD ECKD request (cqr) is to create a new request with an appropriate recovery CCW program. Certain features, e.g. failfast, can be enabled per request and are stored in the requests flags. These flags have to be copied from the failed to the recovery request, to let the recovery request use the same features as the original one. Signed-off-by:
Stefan Weinhuber <wein@de.ibm.com> Signed-off-by:
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Martin Schwidefsky authored
If the zero page is mapped to virtual user space addresses that differ only in bit 2^12 or 2^13 we get L1 cache synonyms which can affect performance. Follow the mips model and use multiple zero pages to avoid the synonyms. Signed-off-by:
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- 24 Oct, 2010 12 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivialLinus Torvalds authored
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits) Update broken web addresses in arch directory. Update broken web addresses in the kernel. Revert "drivers/usb: Remove unnecessary return's from void functions" for musb gadget Revert "Fix typo: configuation => configuration" partially ida: document IDA_BITMAP_LONGS calculation ext2: fix a typo on comment in ext2/inode.c drivers/scsi: Remove unnecessary casts of private_data drivers/s390: Remove unnecessary casts of private_data net/sunrpc/rpc_pipe.c: Remove unnecessary casts of private_data drivers/infiniband: Remove unnecessary casts of private_data drivers/gpu/drm: Remove unnecessary casts of private_data kernel/pm_qos_params.c: Remove unnecessary casts of private_data fs/ecryptfs: Remove unnecessary casts of private_data fs/seq_file.c: Remove unnecessary casts of private_data arm: uengine.c: remove C99 comments arm: scoop.c: remove C99 comments Fix typo configue => configure in comments Fix typo: configuation => configuration Fix typo interrest[ing|ed] => interest[ing|ed] Fix various typos of valid in comments ... Fix up trivial conflicts in: drivers/char/ipmi/ipmi_si_intf.c drivers/usb/gadget/rndis.c net/irda/irnet/irnet_ppp.c
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/edacLinus Torvalds authored
* 'devel' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/edac: (25 commits) i7300_edac: Properly initialize per-csrow memory size V4L/DVB: i7300_edac: better initialize page counts MAINTAINERS: Add maintainer for i7300-edac driver i7300-edac: CodingStyle cleanup i7300_edac: Improve comments i7300_edac: Cleanup: reorganize the file contents i7300_edac: Properly detect channel on CE errors i7300_edac: enrich FBD error info for corrected errors i7300_edac: enrich FBD error info for fatal errors i7300_edac: pre-allocate a buffer used to prepare err messages i7300_edac: Fix MTR x4/x8 detection logic i7300_edac: Make the debug messages coherent with the others i7300_edac: Cleanup: remove get_error_info logic i7300_edac: Add a code to cleanup error registers i7300_edac: Add support for reporting FBD errors i7300_edac: Properly detect the type of error correction i7300_edac: Detect if the device is on single mode i7300_edac: Adds detection for enhanced scrub mode on x8 i7300_edac: Clear the error bit after reading i7300_edac: Add error detection code for global errors ...
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git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6: (27 commits) SLUB: Fix memory hotplug with !NUMA slub: Move functions to reduce #ifdefs slub: Enable sysfs support for !CONFIG_SLUB_DEBUG SLUB: Optimize slab_free() debug check slub: Move NUMA-related functions under CONFIG_NUMA slub: Add lock release annotation slub: Fix signedness warnings slub: extract common code to remove objects from partial list without locking SLUB: Pass active and inactive redzone flags instead of boolean to debug functions slub: reduce differences between SMP and NUMA Revert "Slub: UP bandaid" percpu: clear memory allocated with the km allocator percpu: use percpu allocator on UP too percpu: reduce PCPU_MIN_UNIT_SIZE to 32k vmalloc: pcpu_get/free_vm_areas() aren't needed on UP SLUB: Fix merged slab cache names Slub: UP bandaid slub: fix SLUB_RESILIENCY_TEST for dynamic kmalloc caches slub: Fix up missing kmalloc_cache -> kmem_cache_node case for memoryhotplug slub: Add dummy functions for the !SLUB_DEBUG case ...
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
* 'kvm-updates/2.6.37' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (321 commits) KVM: Drop CONFIG_DMAR dependency around kvm_iommu_map_pages KVM: Fix signature of kvm_iommu_map_pages stub KVM: MCE: Send SRAR SIGBUS directly KVM: MCE: Add MCG_SER_P into KVM_MCE_CAP_SUPPORTED KVM: fix typo in copyright notice KVM: Disable interrupts around get_kernel_ns() KVM: MMU: Avoid sign extension in mmu_alloc_direct_roots() pae root address KVM: MMU: move access code parsing to FNAME(walk_addr) function KVM: MMU: audit: check whether have unsync sps after root sync KVM: MMU: audit: introduce audit_printk to cleanup audit code KVM: MMU: audit: unregister audit tracepoints before module unloaded KVM: MMU: audit: fix vcpu's spte walking KVM: MMU: set access bit for direct mapping KVM: MMU: cleanup for error mask set while walk guest page table KVM: MMU: update 'root_hpa' out of loop in PAE shadow path KVM: x86 emulator: Eliminate compilation warning in x86_decode_insn() KVM: x86: Fix constant type in kvm_get_time_scale KVM: VMX: Add AX to list of registers clobbered by guest switch KVM guest: Move a printk that's using the clock before it's ready KVM: x86: TSC catchup mode ...
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git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/stagingLinus Torvalds authored
* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: i2c-viapro: Don't log nacks i2c/pca954x: Remove __devinit and __devexit from probe and remove functions MAINTAINERS: Add maintainer for PCA9541 I2C bus master selector driver i2c/mux: Driver for PCA9541 I2C Master Selector i2c: Optimize function i2c_detect() i2c: Discard warning message on device instantiation from user-space i2c-amd8111: Add proper error handling i2c: Change to new flag variable i2c: Remove unneeded inclusions of <linux/i2c-id.h> i2c: Let i2c_parent_is_i2c_adapter return the parent adapter i2c: Simplify i2c_parent_is_i2c_adapter i2c-pca-platform: Change device name of request_irq i2c: Fix Kconfig dependencies
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hidLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (47 commits) HID: fix mismerge in hid-lg HID: hidraw: fix window in hidraw_release HID: hid-sony: override usbhid_output_raw_report for Sixaxis HID: add absolute axis resolution calculation HID: force feedback support for Logitech RumblePad gamepad HID: support STmicroelectronics and Sitronix with hid-stantuml driver HID: magicmouse: Adjust major / minor axes to scale HID: Fix for problems with eGalax/DWAV multi-touch-screen HID: waltop: add support for Waltop Slim Tablet 12.1 inch HID: add NOGET quirk for AXIS 295 Video Surveillance Joystick HID: usbhid: remove unused hiddev_driver HID: magicmouse: Use hid-input parsing rather than bypassing it HID: trivial formatting fix HID: Add support for Logitech Speed Force Wireless gaming wheel HID: don't Send Feature Reports on Interrupt Endpoint HID: 3m: Adjust major / minor axes to scale HID: 3m: Correct touchscreen emulation HID: 3m: Convert to MT slots HID: 3m: Output proper orientation range HID: 3m: Adjust to sequential MT HID protocol ...
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git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: Makefile - replace the use of <module>-objs with <module>-y crypto: hifn_795x - use cancel_delayed_work_sync() crypto: talitos - sparse check endian fixes crypto: talitos - fix checkpatch warning crypto: talitos - fix warning: 'alg' may be used uninitialized in this function crypto: cryptd - Adding the AEAD interface type support to cryptd crypto: n2_crypto - Niagara2 driver needs to depend upon CRYPTO_DES crypto: Kconfig - update broken web addresses crypto: omap-sham - Adjust DMA parameters crypto: fips - FIPS requires algorithm self-tests crypto: omap-aes - OMAP2/3 AES hw accelerator driver crypto: updates to enable omap aes padata: add missing __percpu markup in include/linux/padata.h MAINTAINERS: Add maintainer entries for padata/pcrypt
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Pekka Enberg authored
Conflicts: include/linux/percpu.h mm/percpu.c
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Jean Delvare authored
Transactions not acked can happen every now and then, in particular during device detection, and various transaction types can be used for this purpose. So stop logging this event, except when debugging is enabled. This is what other similar drivers (e.g. i2c-i801 or i2c-piix4) do. Signed-off-by:Jean Delvare <khali@linux-fr.org>
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Guenter Roeck authored
The underlying I2C adapter may or may not be present when this driver gets initialized, and may disappear later, so there is no safe time at which the probe and remove functions can be discarded. Signed-off-by:
Guenter Roeck <guenter.roeck@ericsson.com> Signed-off-by:
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Guenter Roeck authored
Signed-off-by:
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Guenter Roeck authored
This patch adds support for PCA9541, an I2C Bus Master Selector. The driver is modeled as single channel I2C Multiplexer to be able to utilize the I2C multiplexer framework. Signed-off-by:
Tom Grennan <tom.grennan@ericsson.com> Acked-by:
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