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* [S390] 3270: lock dependency fixesMartin Schwidefsky2009-06-122-48/+32
| | | | | | | | | | | | | | Lockdep found a problem with the lock order of the view lock and the ccw device lock. raw3270_activate_view/raw3270_deactivate_view first take the ccw device lock then call the activate/deactivate functions of the view which take view lock. The update functions of the con3270/tty3270 view will first take the view lock, then take the ccw device lock. To fix this the activate/deactivate functions are changed to avoid taking the view lock by moving the functions calls that modify the 3270 output buffer to the update function which is called by a timer. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] 3270: do not register with tty_register_deviceMartin Schwidefsky2009-06-121-15/+0
| | | | | | | | | | | | | | The tty3270_notifier that calls tty_register_device / tty_unregister_device is harmful in two ways: 1) the device node that is create is wrong because the minor numbers for 3270 tty start with 1 and tty_notifier passes the minor as index. 2) If 1) is corrected you'll get a warning: WARNING: at fs/sysfs/dir.c:462 sysfs_add_one+0x4c/0x60() sysfs: duplicate filename '227:1' can not be created The 227:1 link is already created by raw3270_create_attributes to refer to ../../class/tty/tty<devno>. There cannot be two links. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* block: Do away with the notion of hardsect_sizeMartin K. Petersen2009-05-221-1/+1
| | | | | | | | | | | | | | Until now we have had a 1:1 mapping between storage device physical block size and the logical block sized used when addressing the device. With SATA 4KB drives coming out that will no longer be the case. The sector size will be 4KB but the logical block size will remain 512-bytes. Hence we need to distinguish between the physical block size and the logical ditto. This patch renames hardsect_size to logical_block_size. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* block: implement and enforce request peek/start/fetchTejun Heo2009-05-111-5/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Till now block layer allowed two separate modes of request execution. A request is always acquired from the request queue via elv_next_request(). After that, drivers are free to either dequeue it or process it without dequeueing. Dequeue allows elv_next_request() to return the next request so that multiple requests can be in flight. Executing requests without dequeueing has its merits mostly in allowing drivers for simpler devices which can't do sg to deal with segments only without considering request boundary. However, the benefit this brings is dubious and declining while the cost of the API ambiguity is increasing. Segment based drivers are usually for very old or limited devices and as converting to dequeueing model isn't difficult, it doesn't justify the API overhead it puts on block layer and its more modern users. Previous patches converted all block low level drivers to dequeueing model. This patch completes the API transition by... * renaming elv_next_request() to blk_peek_request() * renaming blkdev_dequeue_request() to blk_start_request() * adding blk_fetch_request() which is combination of peek and start * disallowing completion of queued (not started) requests * applying new API to all LLDs Renamings are for consistency and to break out of tree code so that it's apparent that out of tree drivers need updating. [ Impact: block request issue API cleanup, no functional change ] Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Mike Miller <mike.miller@hp.com> Cc: unsik Kim <donari75@gmail.com> Cc: Paul Clements <paul.clements@steeleye.com> Cc: Tim Waugh <tim@cyberelk.net> Cc: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Cc: David S. Miller <davem@davemloft.net> Cc: Laurent Vivier <Laurent@lvivier.info> Cc: Jeff Garzik <jgarzik@pobox.com> Cc: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Adrian McMenamin <adrian@mcmen.demon.co.uk> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Cc: Borislav Petkov <petkovbb@googlemail.com> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Alex Dubov <oakad@yahoo.com> Cc: Pierre Ossman <drzeus@drzeus.cx> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Markus Lidel <Markus.Lidel@shadowconnect.com> Cc: Stefan Weinhuber <wein@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Pete Zaitcev <zaitcev@redhat.com> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* block: convert to pos and nr_sectors accessorsTejun Heo2009-05-113-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With recent cleanups, there is no place where low level driver directly manipulates request fields. This means that the 'hard' request fields always equal the !hard fields. Convert all rq->sectors, nr_sectors and current_nr_sectors references to accessors. While at it, drop superflous blk_rq_pos() < 0 test in swim.c. [ Impact: use pos and nr_sectors accessors ] Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Tested-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Grant Likely <grant.likely@secretlab.ca> Tested-by: Adrian McMenamin <adrian@mcmen.demon.co.uk> Acked-by: Adrian McMenamin <adrian@mcmen.demon.co.uk> Acked-by: Mike Miller <mike.miller@hp.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Cc: Borislav Petkov <petkovbb@googlemail.com> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Eric Moore <Eric.Moore@lsi.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Pete Zaitcev <zaitcev@redhat.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Paul Clements <paul.clements@steeleye.com> Cc: Tim Waugh <tim@cyberelk.net> Cc: Jeff Garzik <jgarzik@pobox.com> Cc: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Alex Dubov <oakad@yahoo.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Dario Ballabio <ballabio_dario@emc.com> Cc: David S. Miller <davem@davemloft.net> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: unsik Kim <donari75@gmail.com> Cc: Laurent Vivier <Laurent@lvivier.info> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* block: implement and use [__]blk_end_request_all()Tejun Heo2009-04-281-11/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are many [__]blk_end_request() call sites which call it with full request length and expect full completion. Many of them ensure that the request actually completes by doing BUG_ON() the return value, which is awkward and error-prone. This patch adds [__]blk_end_request_all() which takes @rq and @error and fully completes the request. BUG_ON() is added to to ensure that this actually happens. Most conversions are simple but there are a few noteworthy ones. * cdrom/viocd: viocd_end_request() replaced with direct calls to __blk_end_request_all(). * s390/block/dasd: dasd_end_request() replaced with direct calls to __blk_end_request_all(). * s390/char/tape_block: tapeblock_end_request() replaced with direct calls to blk_end_request_all(). [ Impact: cleanup ] Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Mike Miller <mike.miller@hp.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Jeff Garzik <jgarzik@pobox.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Alex Dubov <oakad@yahoo.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
* [S390] Use tape_generic_offline directly.Frank Munzert2009-04-234-16/+7
| | | | | | | | tape_3590_offline and tape_34xx_offline are removed and tape_generic_offline is called directly instead. Signed-off-by: Frank Munzert <munzert@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] BUG to BUG_ON changesStoyan Gaydarov2009-03-263-8/+5
| | | | | | Signed-off-by: Stoyan Gaydarov <stoyboyker@gmail.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Use csum_partial in checksum.hFrank Munzert2009-03-261-1/+3
| | | | | | | | The cksm function in system.h is duplicate to csum_partial in checksum.h. Remove cksm and use csum_partial instead. Signed-off-by: Frank Munzert <munzert@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] tape message cleanupCarsten Otte2009-03-268-371/+267
| | | | | | | | This is a cleanup of all the messages this driver prints. It uses the dev_message macros now. Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Automatic IPL after dumpFrank Munzert2009-03-261-2/+86
| | | | | | | | Provide new shutdown action "dump_reipl" for automatic ipl after dump. Signed-off-by: Frank Munzert <munzert@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
* [S390] fix "mem=" handling in case of standby memoryHeiko Carstens2009-02-191-0/+5
| | | | | | | | | | | | | | Standby memory detected with the sclp interface gets always registered with add_memory calls without considering the limitationt that the "mem=" kernel paramater implies. So fix this and only register standby memory that is below the specified limit. This fixes zfcpdump since it uses "mem=32M". In case there is appr. 2GB standby memory present all of usable memory would be used for the struct pages needed for standby memory. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] sclp: handle empty event buffersPeter Oberparleiter2009-02-191-1/+4
| | | | | | | | | Handle a malformed hardware response which some versions of the Support Element (SE) may present during SE restart and which otherwise would result in an endless loop in function sclp_dispatch_evbufs. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] tape block: fix dependenciesKamalesh Babulal2009-01-091-1/+1
| | | | | | | | | | | | CC drivers/s390/char/tape_block.o In file included from drivers/s390/char/tape_block.c:24: drivers/s390/char/tape.h:159: warning: 'struct request' declared inside parameter list Adding the dependency of CONFIG_BLOCK to CONFIG_S390_TAPE_BLOCK. Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* fix similar typos to successfullColy Li2009-01-081-1/+1
| | | | | | | | | | | | | | | | | | | | | | When I review ocfs2 code, find there are 2 typos to "successfull". After doing grep "successfull " in kernel tree, 22 typos found totally -- great minds always think alike :) This patch fixes all the similar typos. Thanks for Randy's ack and comments. Signed-off-by: Coly Li <coyli@suse.de> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Roland Dreier <rolandd@cisco.com> Cc: Jeremy Kerr <jk@ozlabs.org> Cc: Jeff Garzik <jeff@garzik.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Theodore Ts'o <tytso@mit.edu> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Vlad Yasevich <vladislav.yasevich@hp.com> Cc: Sridhar Samudrala <sri@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* trivial: fix then -> than typos in comments and documentationFrederik Schwarzer2009-01-061-2/+2
| | | | | | | - (better, more, bigger ...) then -> (...) than Signed-off-by: Frederik Schwarzer <schwarzerf@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* [S390] convert vmlogrdr printks to pr_xxx macros.Martin Schwidefsky2008-12-251-13/+13
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] convert zfcp dumper printks to pr_xxx macros.Michael Holzheu2008-12-251-6/+8
| | | | | Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] convert sclp printks to pr_xxx macros.Martin Schwidefsky2008-12-254-28/+41
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] convert monwriter printks to pr_xxx macros.Melissa Howland2008-12-251-1/+4
| | | | | Signed-off-by: Melissa Howland <melissah@us.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] convert monreader printks to pr_xxx macros.Gerald Schaefer2008-12-251-24/+17
| | | | | Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] convert vmur printks to pr_xxx macros.Frank Munzert2008-12-251-6/+9
| | | | | Signed-off-by: Frank Munzert <munzert@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] convert vmcp printks to pr_xxx macros.Christian Borntraeger2008-12-251-3/+5
| | | | | Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] sclp vt220: fix compile warningHeiko Carstens2008-12-251-17/+16
| | | | | | | | | | get rid of this one: CC drivers/s390/char/sclp_vt220.o drivers/s390/char/sclp_vt220.c:588: warning: '__sclp_vt220_flush_buffer' defined but not used Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] vmcp: remove BKLChristian Borntraeger2008-12-251-3/+0
| | | | | | | | | | | | The vmcp driver uses the session->mutex for concurrent access of the data structures. Therefore, the BKL in vmcp_open does not protect against any other function in the driver. The BLK in vmcp_open would protect concurrent access to the module init but all necessary steps ave finished before misc_register is called. We can safely remove the lock_kernel from vcmp. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] sclp: emit error message if assign storage failsHeiko Carstens2008-11-141-0/+3
| | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] tape: disable interrupts in tape_open and tape_releaseFrank Munzert2008-10-281-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Get tape device lock with interrupts disabled. Otherwise lockdep will issue a warning similar to: ================================= [ INFO: inconsistent lock state ] 2.6.27 #1 --------------------------------- inconsistent {in-hardirq-W} -> {hardirq-on-W} usage. vol_id/2903 [HC0[0]:SC0[0]:HE1:SE1] takes: (sch->lock){++..}, at: [<000003e00004c7a2>] tape_open+0x42/0x1a4 [tape] {in-hardirq-W} state was registered at: [<000000000007ce5c>] __lock_acquire+0x894/0xa74 [<000000000007d0ce>] lock_acquire+0x92/0xb8 [<0000000000345154>] _spin_lock+0x5c/0x9c [<0000000000202264>] do_IRQ+0x124/0x1f0 [<0000000000026610>] io_return+0x0/0x8 irq event stamp: 847 hardirqs last enabled at (847): [<000000000007aca6>] trace_hardirqs_on+0x2a/0x38 hardirqs last disabled at (846): [<0000000000076ca2>] trace_hardirqs_off+0x2a/0x38 softirqs last enabled at (0): [<000000000004909e>] copy_process+0x43e/0x11f4 softirqs last disabled at (0): [<0000000000000000>] 0x0 other info that might help us debug this: 1 lock held by vol_id/2903: #0: (&bdev->bd_mutex){--..}, at: [<000000000010e0f4>] do_open+0x78/0x358 stack backtrace: CPU: 1 Not tainted 2.6.27 #1}, Process vol_id (pid: 2903, task: 000000003d4c0000, ksp: 000000003d4e3b10) 0400000000000000 000000003d4e3830 0000000000000002 0000000000000000 000000003d4e38d0 000000003d4e3848 000000003d4e3848 00000000000168a8 0000000000000000 000000003d4e3b10 0000000000000000 0000000000000000 000000003d4e3830 000000000000000c 000000003d4e3830 000000003d4e38a0 000000000034aa98 00000000000168a8 000000003d4e3830 000000003d4e3880 Call Trace: ([<000000000001681c>] show_trace+0x138/0x158) [<0000000000016902>] show_stack+0xc6/0xf8 [<00000000000170d4>] dump_stack+0xb0/0xc0 [<0000000000078810>] print_usage_bug+0x1e8/0x228 [<000000000007a71c>] mark_lock+0xb14/0xd24 [<000000000007cd5a>] __lock_acquire+0x792/0xa74 [<000000000007d0ce>] lock_acquire+0x92/0xb8 [<0000000000345154>] _spin_lock+0x5c/0x9c [<000003e00004c7a2>] tape_open+0x42/0x1a4 [tape] [<000003e00005185c>] tapeblock_open+0x98/0xd0 [tape] Signed-off-by: Frank Munzert <munzert@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] tape block: complete request with correct lockingFrank Munzert2008-10-281-2/+4
| | | | | | | | __blk_end_request must be called with request queue lock held. We need to use blk_end_request rather than __blk_end_request. Signed-off-by: Frank Munzert <munzert@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [PATCH] switch tape_blockAl Viro2008-10-211-16/+13
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] beginning of methods conversionAl Viro2008-10-211-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | To keep the size of changesets sane we split the switch by drivers; to keep the damn thing bisectable we do the following: 1) rename the affected methods, add ones with correct prototypes, make (few) callers handle both. That's this changeset. 2) for each driver convert to new methods. *ALL* drivers are converted in this series. 3) kill the old (renamed) methods. Note that it _is_ a flagday; all in-tree drivers are converted and by the end of this series no trace of old methods remain. The only reason why we do that this way is to keep the damn thing bisectable and allow per-driver debugging if anything goes wrong. New methods: open(bdev, mode) release(disk, mode) ioctl(bdev, mode, cmd, arg) /* Called without BKL */ compat_ioctl(bdev, mode, cmd, arg) locked_ioctl(bdev, mode, cmd, arg) /* Called with BKL, legacy */ Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* device create: s390: convert device_create_drvdata to device_createGreg Kroah-Hartman2008-10-164-18/+15
| | | | | | | | | | Now that device_create() has been audited, rename things back to the original call to be sane. Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* fs3270: Correct error returnsAlan Cox2008-10-131-5/+4
| | | | | | | | Drop the kernel lock further and also correct cases where we set rc to an error code, and then return 0 Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs3270: remove extra locksAlan Cox2008-10-131-5/+1
| | | | | | | | get_current_tty now does internal locking and returns a referenced object, thus our use of tty_mutex here can go away. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: Redo current tty lockingAlan Cox2008-10-131-0/+1
| | | | | | | | | Currently it is sometimes locked by the tty mutex and sometimes by the sighand lock. The latter is in fact correct and now we can hand back referenced objects we can fix this up without problems around sleeping functions. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: Make get_current_tty use a krefAlan Cox2008-10-131-1/+2
| | | | | | | | | | | | | We now return a kref covered tty reference. That ensures the tty structure doesn't go away when you have a return from get_current_tty. This is not enough to protect you from most of the resources being freed behind your back - yet. [Updated to include fixes for SELinux problems found by Andrew Morton and an s390 leak found while debugging the former] Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [S390] 3215: Remove tasklet.Heiko Carstens2008-10-101-20/+6
| | | | | | | | | | | | | | | | | | | The 3215 console irq handler used to schedule a tasklet. However the console irq handler also gets called from the infamous cio_tpi() function. Which in turn does something like local_bh_disable() [call console irq handler] _local_bh_enable() _local_bh_enable() prevents execution of softirqs, which is intended within cio_tpi(). However there might be a new softirq pending because irq handler scheduled a tasklet. In order to prevent this behaviour we just get rid of the tasklet. It's not doing much anyway. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] console flush on panic / rebootHolger Smolinski2008-10-104-18/+86
| | | | | | | | | | | | | | The s390 console drivers use the unblank callback of the console structure to flush the console buffer. In case of a panic or a reboot the CPU doing the callback can block on the console i/o. The other CPUs in the system continue to work. For panic this is not a good idea. Replace the unblank callback with proper panic/reboot notifier. These get called after all but one CPU have been stopped. Signed-off-by: Holger Smolinski <Holger.Smolinski@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] more bus_id -> dev_name conversionsCornelia Huck2008-10-101-2/+2
| | | | | | | | | Some further bus_id -> dev_name() conversions in s390 code. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] bus_id -> dev_set_name() changesCornelia Huck2008-10-101-2/+1
| | | | | | | | | | Convert most s390 users setting bus_id to dev_set_name(). css and ccw busses are deferred since they need some special treatment. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] bus_id -> dev_name conversionsKay Sievers2008-10-107-86/+92
| | | | | | | | | | bus_id -> dev_name() conversions in s390 code. [cornelia.huck@de.ibm.com: minor adaptions] Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] drivers/s390: Use an IS_ERR test rather than a NULL testJulien Brunel2008-08-212-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In case of error, functions dasd_kmalloc_request and idal_buffer_alloc return an ERR pointer, but never return the NULL pointer. So after a call to one of these functions, a NULL test should be replaced by an IS_ERR test. A simplified version of the semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @correct_null_test@ expression x,E; statement S1, S2; @@ x = ( dasd_kmalloc_request(...) | idal_buffer_alloc(...) ) <... when != x = E if ( ( - x@p2 != NULL + ! IS_ERR ( x ) | - x@p2 == NULL + IS_ERR( x ) ) ) S1 else S2 ...> ? x = E; // </smpl> Signed-off-by: Julien Brunel <brunel@diku.dk> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] dont use kthread for smp_rescan_cpus().Heiko Carstens2008-08-011-12/+1
| | | | | | | | | | Since git commit 3da1c84c00c7e5fa8348336bd8c342f9128b0f14 "workqueues: make get_online_cpus() useable for work->func()" it is safe to call get_online_cpus() from workqueue context. So remove the kthread workaround again. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Add support for memory hot-remove.Gerald Schaefer2008-08-011-0/+5
| | | | | | | | This patch enables memory hot-remove on s390. Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] nohz/sclp: disable timer on synchronous waits.Heiko Carstens2008-08-011-2/+4
| | | | | | | | | | | sclp_sync_wait wait synchronously for an sclp interrupt and disables timer interrupts. However on the irq enter paths there is an extra check if a timer interrupt would be due and calls the timer callback. This would schedule softirqs in the wrong context. So introduce local_tick_enable/disable which prevents this. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* device create: s390: convert device_create to device_create_drvdataGreg Kroah-Hartman2008-07-213-12/+14
| | | | | | | | | | device_create() is race-prone, so use the race-free device_create_drvdata() instead as device_create() is going away. Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [S390] vmur: Fix return code handling.Frank Munzert2008-07-171-5/+5
| | | | | | | | Use -EOPNOTSUPP instead of -ENOTSUPP. Signed-off-by: Frank Munzert <munzert@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] zfcpdump: Make SCSI disk dump tool recognize storage holesFrank Munzert2008-07-171-7/+94
| | | | | | | | | | The kernel part of zfcpdump establishes a new debugfs file zcore/memmap which exports information on memory layout (start address and length of each memory chunk) to its userspace counterpart. Signed-off-by: Frank Munzert <munzert@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
* Merge branch 'bkl-removal' of git://git.lwn.net/linux-2.6Linus Torvalds2008-07-148-15/+58
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'bkl-removal' of git://git.lwn.net/linux-2.6: (146 commits) IB/umad: BKL is not needed for ib_umad_open() IB/uverbs: BKL is not needed for ib_uverbs_open() bf561-coreb: BKL unneeded for open() Call fasync() functions without the BKL snd/PCM: fasync BKL pushdown ipmi: fasync BKL pushdown ecryptfs: fasync BKL pushdown Bluetooth VHCI: fasync BKL pushdown tty_io: fasync BKL pushdown tun: fasync BKL pushdown i2o: fasync BKL pushdown mpt: fasync BKL pushdown Remove BKL from remote_llseek v2 Make FAT users happier by not deadlocking x86-mce: BKL pushdown vmwatchdog: BKL pushdown vmcp: BKL pushdown via-pmu: BKL pushdown uml-random: BKL pushdown uml-mmapper: BKL pushdown ...
| * Merge commit 'v2.6.26' into bkl-removalJonathan Corbet2008-07-148-43/+30
| |\
| * | vmwatchdog: BKL pushdownArnd Bergmann2008-07-021-1/+6
| | | | | | | | | | | | Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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