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* Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds2013-07-0414-689/+74
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull first round of SCSI updates from James Bottomley: "The patch set is mostly driver updates (usf, zfcp, lpfc, mpt2sas, megaraid_sas, bfa, ipr) and a few bug fixes. Also of note is that the Buslogic driver has been rewritten to a better coding style and 64 bit support added. We also removed the libsas limitation on 16 bytes for the command size (currently no drivers make use of this)" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (101 commits) [SCSI] megaraid: minor cut and paste error fixed. [SCSI] ufshcd-pltfrm: remove unnecessary dma_set_coherent_mask() call [SCSI] ufs: fix register address in UIC error interrupt handling [SCSI] ufshcd-pltfrm: add missing empty slot in ufs_of_match[] [SCSI] ufs: use devres functions for ufshcd [SCSI] ufs: Fix the response UPIU length setting [SCSI] ufs: rework link start-up process [SCSI] ufs: remove version check before IS reg clear [SCSI] ufs: amend interrupt configuration [SCSI] ufs: wrap the i/o access operations [SCSI] storvsc: Update the storage protocol to win8 level [SCSI] storvsc: Increase the value of scsi timeout for storvsc devices [SCSI] MAINTAINERS: Add myself as the maintainer for BusLogic SCSI driver [SCSI] BusLogic: Port driver to 64-bit. [SCSI] BusLogic: Fix style issues [SCSI] libiscsi: Added new boot entries in the session sysfs [SCSI] aacraid: Fix for arrays are going offline in the system. System hangs [SCSI] ipr: IOA Status Code(IOASC) update [SCSI] sd: Update WRITE SAME heuristics [SCSI] fnic: potential dead lock in fnic_is_abts_pending() ...
| * [SCSI] zfcp: status read buffers on first adapter open with link downSteffen Maier2013-05-312-8/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 64deb6efdc5504ce97b5c1c6f281fffbc150bd93 "[SCSI] zfcp: Use status_read_buf_num provided by FCP channel" started using a value returned by the channel but only evaluated the value if the fabric link is up. Commit 8d88cf3f3b9af4713642caeb221b6d6a42019001 "[SCSI] zfcp: Update status read mempool" introduced mempool resizings based on the above value. On setting an FCP device online for the very first time since boot, a new zeroed adapter object is allocated. If the link is down, the number of status read requests remains zero. Since just the config data exchange is incomplete, we proceed with adapter open recovery. However, we unconditionally call mempool_resize with adapter->stat_read_buf_num == 0 in this case. This causes a kernel message "kernel BUG at mm/mempool.c:131!" in process "zfcperp<FCP-device-bus-ID>" with last function mempool_resize in Krnl PSW and zfcp_erp_thread in the Call Trace. Don't evaluate channel values which are invalid on link down. The number of status read requests is always valid, evaluated, and set to a positive minimum greater than zero. The adapter open recovery can proceed and the channel has status read buffers to inform us on a future link up event. While we are not aware of any other code path that could result in mempool resize attempts of size zero, we still also initialize the number of status read buffers to be posted to a static minimum number on adapter object allocation. Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com> Cc: <stable@vger.kernel.org> #2.6.35+ Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] zfcp: remove access control tables interfaceMartin Peschke2013-05-3110-636/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes an interface that was used to manage access control tables within the HBA. The patch consequently removes the handling for conditions related to those access control tables, too. That initiator-based access control feature was only needed until the introduction of NPIV and was withdrawn with z10 years ago. It's time to cleanup the corresponding device driver code. Signed-off-by: Martin Peschke <mpeschke@linux.vnet.ibm.com> Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] zfcp: module parameter dbflevel for early debuggingSteffen Maier2013-05-311-2/+9
| | | | | | | | | | | | | | | | | | | | | | | | So far, we could only increase the s390dbf log level after an FCP device has been initially set online for it to create the dbf entries required to adjust the level. Introduce zfcp.dbflevel as counterpart to the already existing zfcp.dbfsize to enable debugging of e.g. setting an FCP device online. Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] zfcp: block queue limits with data routerSteffen Maier2013-05-311-3/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 86a9668a8d29ea711613e1cb37efa68e7c4db564 "[SCSI] zfcp: support for hardware data router" reduced the initial block queue limits in the scsi_host_template to the absolute minimum and adjusted them later on. However, the adjustment was too late for the BSG devices of Scsi_Host and fc_host. Therefore, ioctl(..., SG_IO, ...) with request or response size > 4kB to a BSG device of an fc_host or a Scsi_Host fails with EINVAL. As a result, users of such ioctl such as HBA_SendCTPassThru() in libzfcphbaapi return with error HBA_STATUS_ERROR. Initialize the block queue limits in zfcp_scsi_host_template to the greatest common denominator (GCD). While we cannot exploit the slightly enlarged maximum request size with data router, this should be neglectible. Doing so also avoids running into trouble after live guest relocation (LGR) / migration from a data router FCP device to an FCP device that does not support data router. In that case, zfcp would figure out the new limits on adapter recovery, but the fc_host and Scsi_Host (plus in fact all sdevs) still exist with the old and now too large queue limits. It should also OK, not to use half the size as in the DIX case, because fc_host and Scsi_Host do not transport FCP requests including SCSI commands using protection data. Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com> Reviewed-by: Martin Peschke <mpeschke@linux.vnet.ibm.com> Cc: <stable@vger.kernel.org> #3.2+ Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] zfcp: fix adapter (re)open recovery while link to SAN is downDaniel Hansel2013-05-311-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | FCP device remains in status ERP_FAILED when device is switched online or adapter recovery is triggered while link to SAN is down. When Exchange Configuration Data command returns the FSF status FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE it aborts the exchange process. The only retries are done during the common error recovery procedure (i.e. max. 3 retries with 8sec sleep between) and remains in status ERP_FAILED with QDIO down. This commit reverts the commit 0df138476c8306478d6e726f044868b4bccf411c (zfcp: Fix adapter activation on link down). When FSF status FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE is received the adapter recovery will be finished without any retries. QDIO will be up now and status changes such as LINK UP will be received now. Signed-off-by: Daniel Hansel <daniel.hansel@linux.vnet.ibm.com> Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com> Cc: <stable@vger.kernel.org> #2.6.37+ Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] zfcp: remove unused device_unregister wrapperSebastian Ott2013-05-312-16/+0
| | | | | | | | | | | | | | | | | | | | | | Remove the now unused function zfcp_device_unregister since all users have been converted to use device_unregister directly. Reviewed-by: Steffen Maier <maier@linux.vnet.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] zfcp: cleanup unit sysfs attribute usageSebastian Ott2013-05-314-11/+9
| | | | | | | | | | | | | | | | | | | | | | | | Let the driver core handle device attribute creation and removal. This will simplify the code and eliminates races between attribute availability and userspace notification via uevents. Reviewed-by: Steffen Maier <maier@linux.vnet.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] zfcp: cleanup port sysfs attribute usageSebastian Ott2013-05-315-15/+10
| | | | | | | | | | | | | | | | | | | | | | | | Let the driver core handle device attribute creation and removal. This will simplify the code and eliminates races between attribute availability and userspace notification via uevents. Reviewed-by: Steffen Maier <maier@linux.vnet.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] zfcp: cfdc fops add ownerSebastian Ott2013-05-311-0/+2
| | | | | | | | | | | | | | | | | | Set the owner member of zfcp_cfdc_fops, to ensure that the caller of these functions holds a module reference. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* | Merge branch 'for-linus' of ↵Linus Torvalds2013-07-041-1/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree updates from Jiri Kosina: "The usual stuff from trivial tree" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (34 commits) treewide: relase -> release Documentation/cgroups/memory.txt: fix stat file documentation sysctl/net.txt: delete reference to obsolete 2.4.x kernel spinlock_api_smp.h: fix preprocessor comments treewide: Fix typo in printk doc: device tree: clarify stuff in usage-model.txt. open firmware: "/aliasas" -> "/aliases" md: bcache: Fixed a typo with the word 'arithmetic' irq/generic-chip: fix a few kernel-doc entries frv: Convert use of typedef ctl_table to struct ctl_table sgi: xpc: Convert use of typedef ctl_table to struct ctl_table doc: clk: Fix incorrect wording Documentation/arm/IXP4xx fix a typo Documentation/networking/ieee802154 fix a typo Documentation/DocBook/media/v4l fix a typo Documentation/video4linux/si476x.txt fix a typo Documentation/virtual/kvm/api.txt fix a typo Documentation/early-userspace/README fix a typo Documentation/video4linux/soc-camera.txt fix a typo lguest: fix CONFIG_PAE -> CONFIG_x86_PAE in comment ...
| * | treewide: relase -> releaseGeert Uytterhoeven2013-06-281-1/+1
| |/ | | | | | | | | Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | Merge branch 'akpm' (updates from Andrew Morton)Linus Torvalds2013-07-031-4/+2
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge first patch-bomb from Andrew Morton: - various misc bits - I'm been patchmonkeying ocfs2 for a while, as Joel and Mark have been distracted. There has been quite a bit of activity. - About half the MM queue - Some backlight bits - Various lib/ updates - checkpatch updates - zillions more little rtc patches - ptrace - signals - exec - procfs - rapidio - nbd - aoe - pps - memstick - tools/testing/selftests updates * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (445 commits) tools/testing/selftests: don't assume the x bit is set on scripts selftests: add .gitignore for kcmp selftests: fix clean target in kcmp Makefile selftests: add .gitignore for vm selftests: add hugetlbfstest self-test: fix make clean selftests: exit 1 on failure kernel/resource.c: remove the unneeded assignment in function __find_resource aio: fix wrong comment in aio_complete() drivers/w1/slaves/w1_ds2408.c: add magic sequence to disable P0 test mode drivers/memstick/host/r592.c: convert to module_pci_driver drivers/memstick/host/jmb38x_ms: convert to module_pci_driver pps-gpio: add device-tree binding and support drivers/pps/clients/pps-gpio.c: convert to module_platform_driver drivers/pps/clients/pps-gpio.c: convert to devm_* helpers drivers/parport/share.c: use kzalloc Documentation/accounting/getdelays.c: avoid strncpy in accounting tool aoe: update internal version number to v83 aoe: update copyright date aoe: perform I/O completions in parallel ...
| * | clean up scary strncpy(dst, src, strlen(src)) usesKees Cook2013-07-031-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix various weird constructions of strncpy(dst, src, strlen(src)). Length limits should be about the space available in the destination, not repurposed as a method to either always include or always exclude a trailing NULL byte. Either the NULL should always be copied (using strlcpy), or it should not be copied (using something like memcpy). Readable code should not depend on the weird behavior of strncpy when it hits the length limit. Better to avoid the anti-pattern entirely. [akpm@linux-foundation.org: revert getdelays.c part due to missing bsd/string.h] Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> [staging] Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> [acpi] Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ursula Braun <ursula.braun@de.ibm.com> Cc: Frank Blaschka <blaschka@linux.vnet.ibm.com> Cc: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | s390/dasd: Fail all requests when DASD_FLAG_ABORTIO is setHannes Reinecke2013-07-013-3/+72
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Whenever a DASD request encounters a timeout we might need to abort all outstanding requests on this or even other devices. This is especially useful if one wants to fail all devices on one side of a RAID10 configuration, even though only one device exhibited an error. To handle this I've introduced a new device flag DASD_FLAG_ABORTIO. This flag is evaluated in __dasd_process_request_queue() and will invoke blk_abort_request() for all outstanding requests with DASD_CQR_FLAGS_FAILFAST set. This will cause any of these requests to be aborted immediately if the blk_timeout function is activated. The DASD_FLAG_ABORTIO is also evaluated in __dasd_process_request_queue to abort all new request which would have the DASD_CQR_FLAGS_FAILFAST bit set. The flag can be set with the new ioctls 'BIODASDABORTIO' and removed with 'BIODASDALLOWIO'. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/dasd: Add 'timeout' attributeHannes Reinecke2013-07-013-0/+62
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a 'timeout' attibute to the DASD driver. When set to non-zero, the blk_timeout function will be enabled with the timeout specified in the attribute. Setting 'timeout' to '0' will disable block timeouts. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | block/dasd: detailed I/O errorsHannes Reinecke2013-07-011-3/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The DASD driver is using FASTFAIL as an equivalent to the transport errors in SCSI. And the 'steal lock' function maps roughly to a reservation error. So we should be returning the appropriate error codes when completing a request. Acked-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/dasd: Reduce amount of messages for specific errorsHannes Reinecke2013-07-011-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Whenever a request has been aborted internally by the driver there is no sense data to be had. And printing lots of messages stalls the system, so better to print out a short one-liner. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/dasd: Implement block timeout handlingHannes Reinecke2013-07-014-2/+88
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements generic block layer timeout handling callbacks for DASDs. When the timeout expires the respective cqr is aborted. With this timeout handler time-critical request abort is guaranteed as the abort does not depend on the internal state of the various DASD driver queues. Signed-off-by: Hannes Reinecke <hare@suse.de> Acked-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/dasd: process all requests in the device taskletHannes Reinecke2013-07-011-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Originally the DASD device tasklet would process the entries on the ccw_queue until the first non-final request was found. Which was okay as long as all requests have the same retries and expires parameter. However, as we're now allowing to modify both it is possible to have requests _after_ the first request which already have expired. So we need to check all requests in the device tasklet. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/dasd: make number of retries configurableHannes Reinecke2013-07-015-6/+57
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of having the number of retries hard-coded in the various functions we should be using a default retry value, which can be modified via sysfs. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/dasd: Clarify commentHannes Reinecke2013-07-011-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | dasd_cancel_req will never return 1, only 0. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/vmwatchdog: do not use static dataSebastian Ott2013-06-261-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Using static data for fields which are accessed by HW will fail if the driver is build as a module (since this would be vmalloc'ed memory). This Bug was revealed via "s390: remove virt_to_phys implementation" - the old virt_to_phys implementation would have translated the address but it was not guaranteed that the memory was contiguous. Fix it by putting the data on the stack. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/airq: simplify adapter interrupt codeMartin Schwidefsky2013-06-263-153/+107
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are three users of adapter interrupts: AP, QDIO and PCI. Each registers a single adapter interrupt with independent ISCs. Define a "struct airq" with the interrupt handler, a pointer and a mask for the local summary indicator and the ISC for the adapter interrupt source. Convert the indicator array with its fixed number of adapter interrupt sources per ISE to an array of hlists. This removes the limitation to 32 adapter interrupts per ISC and allows for arbitrary memory locations for the local summary indicator. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/sclp: remove duplicated include from sclp_ctl.cWei Yongjun2013-06-261-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | Remove duplicated include. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/irq: store interrupt information in pt_regsMartin Schwidefsky2013-06-261-40/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Copy the interrupt parameters from the lowcore to the pt_regs structure in entry[64].S and reduce the arguments of the low level interrupt handler to the pt_regs pointer only. In addition move the test-pending-interrupt loop from do_IRQ to entry[64].S to make sure that interrupt information is always delivered via pt_regs. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/drivers: Cocci spatch "ptr_ret.spatch"Thomas Meyer2013-06-263-3/+3
| | | | | | | | | | | | | | | | | | Signed-off-by: Thomas Meyer <thomas@m3y3r.de> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/net: Cocci spatch "ptr_ret.spatch"Thomas Meyer2013-06-264-4/+4
| | | | | | | | | | | | | | | | | | Signed-off-by: Thomas Meyer <thomas@m3y3r.de> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/dasd: Cocci spatch "ptr_ret.spatch"Thomas Meyer2013-06-261-1/+1
| | | | | | | | | | | | | | | | | | Signed-off-by: Thomas Meyer <thomas@m3y3r.de> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/ap_bus: Cocci spatch "ptr_ret.spatch"Thomas Meyer2013-06-261-2/+2
| | | | | | | | | | | | | | | | | | Signed-off-by: Thomas Meyer <thomas@m3y3r.de> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/chsc: Use snprintf instead of sprintfMichael Holzheu2013-06-261-6/+6
| | | | | | | | | | | | | | | Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/qdio: cleanup chsc SADC usageSebastian Ott2013-06-264-54/+73
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the code to issue the set adapter device controls command to chsc.c and make it accessible for the qdio code via the wrapper chsc_sadc. Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/qdio: cleanup chsc SSQD usageSebastian Ott2013-06-264-43/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Cleanup the function qdio_setup_get_ssqd. Fix some possible memleaks and an unchecked allocation and create a wrapper for SSQD in chsc.c . Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/sclp: Add SCLP character device driverMichael Holzheu2013-06-265-15/+166
| | | | | | | | | | | | | | | | | | | | | | | | Add a character misc device "sclp_ctl" that allows to run SCCBs from user space using the SCLP_CTL_SCCB ioctl. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/cio: Introduce on-close CHSC IOCTLsMichael Holzheu2013-06-261-0/+94
| | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce two new ioctls CHSC_ON_CLOSE_SET and CHSC_ON_CLOSE_REMOVE that allow to add and remove one CHSC that is unconditionally executed when the CHSC device node is closed. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/cio: Make /dev/chsc a single-open deviceMichael Holzheu2013-06-261-1/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | In order to allow serialization of dynamic I/O with this patch the /dev/chsc character device can only be accessed by one single opener. Any subsequent open calls are rejected with EBUSY. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/cio: Introduce generic synchronous CHSC IOCTLMichael Holzheu2013-06-262-7/+35
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds a new ioctl CHSC_START_SYNC that allows to execute any synchronous CHSC that is provided by user space. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/sclp: add parameter to specify number of buffer pagesMartin Schwidefsky2013-06-264-7/+138
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a kernel parameter to be able to specify the number of pages to be used as output buffer by the line-mode sclp driver and the vt220 sclp driver. The current number of output pages is 6, if the service element is unavailable the boot messages alone can fill up the output buffer. If this happens the system blocks until the service element is working again. For a large LPAR with many devices it is sensible to have the ability to increase the output buffer size. To help to debug this situation add a counter for the page-pool-empty situation and make it available as a sclp driver attribute. To avoid the system to stall until the service element works again add another kernel parameter to allow to drop output buffers. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | s390/qdio: remove unused functionSebastian Ott2013-06-261-44/+0
|/ / | | | | | | | | | | | | | | Remove the unused function qdio_trace_aob. Acked-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | netiucv: Hold rtnl between name allocation and device registration.Benjamin Poirier2013-06-131-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fixes a race condition between concurrent initializations of netiucv devices that try to use the same name. sysfs: cannot create duplicate filename '/devices/iucv/netiucv2' [...] Call Trace: ([<00000000002edea4>] sysfs_add_one+0xb0/0xdc) [<00000000002eecd4>] create_dir+0x80/0xfc [<00000000002eee38>] sysfs_create_dir+0xe8/0x118 [<00000000003835a8>] kobject_add_internal+0x120/0x2d0 [<00000000003839d6>] kobject_add+0x62/0x9c [<00000000003d9564>] device_add+0xcc/0x510 [<000003e00212c7b4>] netiucv_register_device+0xc0/0x1ec [netiucv] Signed-off-by: Benjamin Poirier <bpoirier@suse.de> Tested-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | s390/dasd: fix handling of gone pathsStefan Weinhuber2013-05-311-2/+10
|/ | | | | | | | | | | | | | | When a path is gone and dasd_generic_path_event is called with a PE_PATH_GONE event, we must assume that any I/O request on that subchannel is still running. This is unlike the dasd_generic_notify handler and the CIO_NO_PATH event, which implies that the subchannel has been cleared. If dasd_generic_path_event finds that the path has been the last usable path, it must not call dasd_generic_last_path_gone (which would reset the state of running requests), but just set the DASD_STOPPED_DC_WAIT bit. Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2013-05-213-1/+40
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 update from Martin Schwidefsky: "An additional sysfs attribute for channel paths and a couple of bux fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/pgtable: fix ipte notify bit s390/xpram: mark xpram as non-rotational s390/smp: fix cpu re-scan vs. cpu state s390/cio: add channel ID sysfs attribute s390/ftrace: fix mcount adjustment s390: fix gmap_ipte_notifier vs. software dirty pages s390: disable pfmf for clear page instruction s390/disassembler: prevent endless loop in print_fn_code() s390: remove non existent reference to GENERIC_KERNEL_THREAD
| * s390/xpram: mark xpram as non-rotationalChristian Borntraeger2013-05-171-0/+1
| | | | | | | | | | | | | | xpram is a memory technology. Lets mark that as non-rotational. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/cio: add channel ID sysfs attributePeter Oberparleiter2013-05-152-1/+39
| | | | | | | | | | | | | | | | | | | | Add new attributes "chid" and "chid_external" to the channel-path sysfs directory. These attributes contain information related to the channel-ID of the channel-path. Reviewed-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-blockLinus Torvalds2013-05-081-2/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull block core updates from Jens Axboe: - Major bit is Kents prep work for immutable bio vecs. - Stable candidate fix for a scheduling-while-atomic in the queue bypass operation. - Fix for the hang on exceeded rq->datalen 32-bit unsigned when merging discard bios. - Tejuns changes to convert the writeback thread pool to the generic workqueue mechanism. - Runtime PM framework, SCSI patches exists on top of these in James' tree. - A few random fixes. * 'for-3.10/core' of git://git.kernel.dk/linux-block: (40 commits) relay: move remove_buf_file inside relay_close_buf partitions/efi.c: replace useless kzalloc's by kmalloc's fs/block_dev.c: fix iov_shorten() criteria in blkdev_aio_read() block: fix max discard sectors limit blkcg: fix "scheduling while atomic" in blk_queue_bypass_start Documentation: cfq-iosched: update documentation help for cfq tunables writeback: expose the bdi_wq workqueue writeback: replace custom worker pool implementation with unbound workqueue writeback: remove unused bdi_pending_list aoe: Fix unitialized var usage bio-integrity: Add explicit field for owner of bip_buf block: Add an explicit bio flag for bios that own their bvec block: Add bio_alloc_pages() block: Convert some code to bio_for_each_segment_all() block: Add bio_for_each_segment_all() bounce: Refactor __blk_queue_bounce to not use bi_io_vec raid1: use bio_copy_data() pktcdvd: Use bio_reset() in disabled code to kill bi_idx usage pktcdvd: use bio_copy_data() block: Add bio_copy_data() ...
| * \ Merge branch 'writeback-workqueue' of ↵Jens Axboe2013-04-0211-29/+175
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq into for-3.10/core Tejun writes: ----- This is the pull request for the earlier patchset[1] with the same name. It's only three patches (the first one was committed to workqueue tree) but the merge strategy is a bit involved due to the dependencies. * Because the conversion needs features from wq/for-3.10, block/for-3.10/core is based on rc3, and wq/for-3.10 has conflicts with rc3, I pulled mainline (rc5) into wq/for-3.10 to prevent those workqueue conflicts from flaring up in block tree. * Resolving the issue that Jan and Dave raised about debugging requires arch-wide changes. The patchset is being worked on[2] but it'll have to go through -mm after these changes show up in -next, and not included in this pull request. The three commits are located in the following git branch. git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git writeback-workqueue Pulling it into block/for-3.10/core produces a conflict in drivers/md/raid5.c between the following two commits. e3620a3ad5 ("MD RAID5: Avoid accessing gendisk or queue structs when not available") 2f6db2a707 ("raid5: use bio_reset()") The conflict is trivial - one removes an "if ()" conditional while the other removes "rbi->bi_next = NULL" right above it. We just need to remove both. The merged branch is available at git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git block-test-merge so that you can use it for verification. The test merge commit has proper merge description. While these changes are a bit of pain to route, they make code simpler and even have, while minute, measureable performance gain[3] even on a workload which isn't particularly favorable to showing the benefits of this conversion. ---- Fixed up the conflict. Conflicts: drivers/md/raid5.c Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * | | block: Add bio_end_sector()Kent Overstreet2013-03-231-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Just a little convenience macro - main reason to add it now is preparing for immutable bio vecs, it'll reduce the size of the patch that puts bi_sector/bi_size/bi_idx into a struct bvec_iter. Signed-off-by: Kent Overstreet <koverstreet@google.com> CC: Jens Axboe <axboe@kernel.dk> CC: Lars Ellenberg <drbd-dev@lists.linbit.com> CC: Jiri Kosina <jkosina@suse.cz> CC: Alasdair Kergon <agk@redhat.com> CC: dm-devel@redhat.com CC: Neil Brown <neilb@suse.de> CC: Martin Schwidefsky <schwidefsky@de.ibm.com> CC: Heiko Carstens <heiko.carstens@de.ibm.com> CC: linux-s390@vger.kernel.org CC: Chris Mason <chris.mason@fusionio.com> CC: Steven Whitehouse <swhiteho@redhat.com> Acked-by: Steven Whitehouse <swhiteho@redhat.com>
* | | | Merge branch 'for-linus' of ↵Linus Torvalds2013-05-073-21/+12
|\ \ \ \ | |_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull more vfs updates from Al Viro: "A couple of fixes + getting rid of __blkdev_put() return value" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: proc: Use PDE attribute setting accessor functions make blkdev_put() return void block_device_operations->release() should return void mtd_blktrans_ops->release() should return void hfs: SMP race on directory close()
| * | | block_device_operations->release() should return voidAl Viro2013-05-073-21/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The value passed is 0 in all but "it can never happen" cases (and those only in a couple of drivers) *and* it would've been lost on the way out anyway, even if something tried to pass something meaningful. Just don't bother. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | | Merge branch 'for-linus' of ↵Linus Torvalds2013-05-064-47/+52
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull more s390 updates from Martin Schwidefsky: "This is the second batch of s390 patches for the 3.10 merge window. Heiko improved the memory detection, this fixes kdump for large memory sizes. Some kvm related memory management work, new ipldev/condev keywords in cio and bug fixes." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/mem_detect: remove artificial kdump memory types s390/mm: add pte invalidation notifier for kvm s390/zcrypt: ap bus rescan problem when toggle crypto adapters on/off s390/memory hotplug,sclp: get rid of per memory increment usecount s390/memory hotplug: provide memory_block_size_bytes() function s390/mem_detect: limit memory detection loop to "mem=" parameter s390/kdump,bootmem: fix bootmem allocator bitmap size s390: get rid of odd global real_memory_size s390/kvm: Change the virtual memory mapping location for Virtio devices s390/zcore: calculate real memory size using own get_mem_size function s390/mem_detect: add DAT sanity check s390/mem_detect: fix lockdep irq tracing s390/mem_detect: move memory detection code to mm folder s390/zfcpdump: exploit new cio_ignore keywords s390/cio: add condev keyword to cio_ignore s390/cio: add ipldev keyword to cio_ignore s390/uaccess: add "fallthrough" comments
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-26 20:35:37 +0000