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2006-10-18[S390] dasd: clean up timer.Stefan Weinhuber
Clean up dasd timer when when a dasd device is set offline. Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-18[S390] monwriter find header logic.Melissa Howland
Fix logic for finding matching buffers. Signed-off-by: Melissa Howland <melissah@us.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-18[S390] cio: sch_no -> schid.sch_no conversion.Cornelia Huck
Overlooked one sch_no -> schid.sch_no conversion. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-18[S390] cio: invalid device operational notificationPeter Oberparleiter
Reset device operational notification flag when channel paths become unavailable during path verification. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-11[S390] cio: remove casts from/to (void *).Cornelia Huck
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-11[S390] cio: Remove grace period for vary off chpid.Cornelia Huck
The grace period handling introduced needless complexity. It didn't help the dasd driver (which can handle terminated I/O just well), and it doesn't help for long running channel programs (which won't complete during the grace period anyway). Terminating I/O using a path that just disappeared immediately is much more consistent with what the user expects. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-11[S390] cio: Use ccw_dev_id and subchannel_id in ccw_device_privateCornelia Huck
Use the proper structures to identify device and subchannel. Change get_disc_ccwdev_by_devno() to get_disc_ccwdev_by_dev_id(). Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-11[S390] monwriter kzalloc size.Melissa Howland
Fix length on kzalloc for data buffer so as to not overwrite unallocated storage. Signed-off-by: Melissa Howland <melissah@us.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-11[S390] cio: add missing KERN_INFO printk header.Cornelia Huck
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-11[S390] irq change improvements.Heiko Carstens
Remove the last few places where a pointer to pt_regs gets passed. Also make sure we call set_irq_regs() before irq_enter() and after irq_exit(). This doesn't fix anything but makes sure s390 looks the same like all other architectures. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-10[PATCH] drivers/s390 misc sparse annotationsAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-06[S390] irq change build fixes.Heiko Carstens
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-06[S390] cio: 0 is a valid chpid.Cornelia Huck
In order to determine chpid validity, we need to check whether the corresponding path is specified in the pim. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-06[S390] monwriter buffer limit.Melissa Howland
Make max_bufs a global (per linux guest) limit. Signed-off-by: Melissa Howland <melissah@us.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-06[S390] ap bus poll thread priority.Christian Borntraeger
The ap bus is supposed to have a low priority. We must use 19 instead of -20, which is just the opposite. Signed-off-by: Christian Borntraeger <cborntra@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-04[S390] cio: improve unit check handling for internal operationsPeter Oberparleiter
Retry internal operation after unit check instead of aborting them. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-04[S390] cio: add timeout handler for internal operations.Peter Oberparleiter
Add timeout handler for common-I/O-layer-internal I/O operations. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-04[S390] zcrypt device registration/unregistration race.Ralph Wuerthner
Fix a race condition during AP device registration and unregistration. Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-04[S390] Add timeouts during sense PGID, path verification and disband PGID.Cornelia Huck
While the machine owns us an interrupt in these cases (and we should get one), reality isn't always like that... Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-10-02[PATCH] replace cad_pid by a struct pidCedric Le Goater
There are a few places in the kernel where the init task is signaled. The ctrl+alt+del sequence is one them. It kills a task, usually init, using a cached pid (cad_pid). This patch replaces the pid_t by a struct pid to avoid pid wrap around problem. The struct pid is initialized at boot time in init() and can be modified through systctl with /proc/sys/kernel/cad_pid [ I haven't found any distro using it ? ] It also introduces a small helper routine kill_cad_pid() which is used where it seemed ok to use cad_pid instead of pid 1. [akpm@osdl.org: cleanups, build fix] Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] s390: update fs3270 to use a struct pidCedric Le Goater
Replaces the pid_t value with a struct pid to avoid pid wrap around problems. Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Acked-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] const struct tty_operationsJeff Dike
As part of an SMP cleanliness pass over UML, I consted a bunch of structures in order to not have to document their locking. One of these structures was a struct tty_operations. In order to const it in UML without introducing compiler complaints, the declaration of tty_set_operations needs to be changed, and then all of its callers need to be fixed. This patch declares all struct tty_operations in the tree as const. In all cases, they are static and used only as input to tty_set_operations. As an extra check, I ran an i386 allyesconfig build which produced no extra warnings. 53 drivers are affected. I checked the history of a bunch of them, and in most cases, there have been only a handful of maintenance changes in the last six months. serial_core.c was the busiest one that I looked at. Signed-off-by: Jeff Dike <jdike@addtoit.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01[PATCH] completions: lockdep annotate on stack completionsPeter Zijlstra
All on stack DECLARE_COMPLETIONs should be replaced by: DECLARE_COMPLETION_ONSTACK Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-30[PATCH] BLOCK: Make it possible to disable the block layer [try #6]David Howells
Make it possible to disable the block layer. Not all embedded devices require it, some can make do with just JFFS2, NFS, ramfs, etc - none of which require the block layer to be present. This patch does the following: (*) Introduces CONFIG_BLOCK to disable the block layer, buffering and blockdev support. (*) Adds dependencies on CONFIG_BLOCK to any configuration item that controls an item that uses the block layer. This includes: (*) Block I/O tracing. (*) Disk partition code. (*) All filesystems that are block based, eg: Ext3, ReiserFS, ISOFS. (*) The SCSI layer. As far as I can tell, even SCSI chardevs use the block layer to do scheduling. Some drivers that use SCSI facilities - such as USB storage - end up disabled indirectly from this. (*) Various block-based device drivers, such as IDE and the old CDROM drivers. (*) MTD blockdev handling and FTL. (*) JFFS - which uses set_bdev_super(), something it could avoid doing by taking a leaf out of JFFS2's book. (*) Makes most of the contents of linux/blkdev.h, linux/buffer_head.h and linux/elevator.h contingent on CONFIG_BLOCK being set. sector_div() is, however, still used in places, and so is still available. (*) Also made contingent are the contents of linux/mpage.h, linux/genhd.h and parts of linux/fs.h. (*) Makes a number of files in fs/ contingent on CONFIG_BLOCK. (*) Makes mm/bounce.c (bounce buffering) contingent on CONFIG_BLOCK. (*) set_page_dirty() doesn't call __set_page_dirty_buffers() if CONFIG_BLOCK is not enabled. (*) fs/no-block.c is created to hold out-of-line stubs and things that are required when CONFIG_BLOCK is not set: (*) Default blockdev file operations (to give error ENODEV on opening). (*) Makes some /proc changes: (*) /proc/devices does not list any blockdevs. (*) /proc/diskstats and /proc/partitions are contingent on CONFIG_BLOCK. (*) Makes some compat ioctl handling contingent on CONFIG_BLOCK. (*) If CONFIG_BLOCK is not defined, makes sys_quotactl() return -ENODEV if given command other than Q_SYNC or if a special device is specified. (*) In init/do_mounts.c, no reference is made to the blockdev routines if CONFIG_BLOCK is not defined. This does not prohibit NFS roots or JFFS2. (*) The bdflush, ioprio_set and ioprio_get syscalls can now be absent (return error ENOSYS by way of cond_syscall if so). (*) The seclvl_bd_claim() and seclvl_bd_release() security calls do nothing if CONFIG_BLOCK is not set, since they can't then happen. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30[PATCH] Split struct request ->flags into two partsJens Axboe
Right now ->flags is a bit of a mess: some are request types, and others are just modifiers. Clean this up by splitting it into ->cmd_type and ->cmd_flags. This allows introduction of generic Linux block message types, useful for sending generic Linux commands to block devices. Signed-off-by: Jens Axboe <axboe@suse.de>
2006-09-28[IPV4]: inet_addr_type() annotationsAl Viro
argument and inferred net-endian variables in callers annotated. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-09-28[S390] Inline assembly cleanup.Martin Schwidefsky
Major cleanup of all s390 inline assemblies. They now have a common coding style. Quite a few have been shortened, mainly by using register asm variables. Use of the EX_TABLE macro helps as well. The atomic ops, bit ops and locking inlines new use the Q-constraint if a newer gcc is used. That results in slightly better code. Thanks to Christian Borntraeger for proof reading the changes. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-28[S390] init_timer in tty3270.Jan Glauber
Call init_timer only once fpr tp->timer in tty3270. Signed-off-by: Jan Glauber <jan.glauber@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-28[S390] remove unnecessary includes.Christian Borntraeger
Signed-off-by: Christian Borntraeger <cborntra@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-23[SCSI] zfcp: fix: avoid removal of fsf reqs before qdio queues are downAndreas Herrmann
Fix the fix ... One of my previous fixes introduced removal of all fsf requests in zfcp's eh_host_reset_handler. But this must not happen before qdio queues are shut down. So, I revert the changes of zfcp_scsi_eh_host_reset_handler. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-09-23[SCSI] zfcp: introduce struct timer_list in struct zfcp_fsf_reqAndreas Herrmann
This instance will be used whenever a timer is needed for a request by zfcp. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-09-23[SCSI] zfcp: fix: use correct req_id in eh_abort_handlerAndreas Herrmann
zfcp's eh_abort_handler used the wrong request ID to identify the request to be aborted. The bug was introduced with commit fea9d6c7bcd8ff1d60ff74f27ba483b3820b18a3 for improved management of request IDs. The bug is fixed with this patch. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-09-23[SCSI] zfcp: create private slab caches to guarantee proper data alignmentHeiko Carstens
Create private slab caches in order to guarantee proper alignment of data structures that get passed to hardware. Sidenote: with this patch slab cache debugging will finally work on s390 (at least no known problems left). Furthermore this patch does some minor cleanups: - store ptr for transport template in struct zfcp_data Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Compile fix ups and Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-09-23[SCSI] zfcp: remove zfcp_ccw_unregister functionHeiko Carstens
Remove unused zfcp_ccw_unregister function (leftover from zfcp's module_exit era). Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-09-20[S390] cio: subchannel evaluation function operates without lockPeter Oberparleiter
css_evaluate_subchannel() operates subchannel without lock which can lead to erratic behavior caused by concurrent device access. Also split evaluation function to make it more readable. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20[S390] cio: always query all paths on path verification.Peter Oberparleiter
Reappearing channel paths are sometimes not utilized by CCW devices because path verification incorrectly relies on path-operational-mask information which is not updated until a channel path has been used again. Modify path verification procedure to always query all available paths to a device. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20[S390] cio: update path groups on logical CHPID changes.Peter Oberparleiter
CHPIDs that are logically varied off will not be removed from a CCW device's path group because resign-from-pathgroup command is issued with invalid path mask of 0 because internal CCW operations are masked by the logical path mask after the relevant bits are cleared by the vary operation. Do not apply logical path mask to internal operations. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20[S390] cio: subchannels in no-path state.Peter Oberparleiter
Subchannel may incorrectly remain in state no-path after channel paths have reappeared. Currently the scan for subchannels which are using a channel path ends at the first occurrence if a full link address was provided by the channel subsystem. The scan needs to continue over all subchannels. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20[S390] Replace nopav-message on VM.Peter Oberparleiter
Specifying kernel parameter "dasd=nopav" on systems running under VM has no function but results in message "disable PAV mode". Correct message is "'nopav' not supported on VM". Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20[S390] set modalias for ccw bus uevents.Peter Oberparleiter
Add the MODALIAS environment variable for ccw bus uevents. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20[S390] Get rid of DBG macro.Cornelia Huck
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20[S390] Linux API for writing z/VM APPLDATA Monitor records.Melissa Howland
This patch delivers a new Linux API in the form of a misc char device that is useable from user space and allows write access to the z/VM APPLDATA Monitor Records collected by the *MONITOR System Service of z/VM. Signed-off-by: Melissa Howland <melissah@us.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20[S390] xpram off by one error.Christian Borntraeger
The xpram driver shows and uses 4096 bytes less than available. Signed-off-by: Christian Borntraeger <cborntra@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20[S390] fix typo in vmcp.Christian Borntraeger
Fix comment typo in vmcp, it is z/VM and not v/VM. Signed-off-by: Christian Borntraeger <cborntra@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20[S390] qdio slsb processing state.Frank Pavlic
The last SLSB has to be set to STATE_PROCESSING if we really want to use the PROCESSING feature. Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20[S390] Missing initialization in common i/o layer.Heiko Carstens
Previous patch that was intended to reduce stack usage within common i/o layer didn't consider implicit memset(..., 0, ...) used with the initializations used before. Add these missing memsets wherever it's not obvious that the concerned memory region is zeroed. This should give the same semantics as before. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20[S390] convert some assembler to C.Heiko Carstens
Convert GET_IPL_DEVICE assembler macro to C function. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20[S390] __exit cleanup.Heiko Carstens
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20[S390] cleanup sysinfo and add system z9 specific extensions.Martin Schwidefsky
With System z9 additional fields have been added to the output of the store system information instruction. This patch adds the new model information field and the alternate cpu capability fields to the output of /proc/sysinfo. While we at it clean up the code as well. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20[S390] dasd default debug level.Horst Hummel
Enhanced default DBF level to get most important messages in debug feature files. Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>