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Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Fix multiple problems found in the hexdump data:
- length calculation was wrong, traces were incomplete
- FC payloads were dumped in different record than the output
function tried to read
- minor fixes in output
- allow complete RSCN traces (up to 1024 bytes according to spec)
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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If an open port fsf request times out (in erp) the
corresponding erp_action member of the fsf
request need to set to NULL. If the port structure
will be removed later-on there will be still a
reference in the fsf request to the non existing
erp_action otherwise.
Signed-off-by: Martin Petermann <martin.petermann@de.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Attaching a unit immediately after setting the adapter online should
be possible. The problem right now is that the port_scan runs from a
workqueue and has not finished when the set_online call returns and
the sysfs structures for the ports are not available yet. Fix that by
waiting for the port scan to complete.
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Fix leftover from last typecast patch:
drivers/s390/scsi/zfcp_aux.c: In function ‘zfcp_port_enqueue’:
drivers/s390/scsi/zfcp_aux.c:629: warning: format ‘%016llx’ expects
type ‘long long unsigned int’, but argument 3 has type ‘u64’
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Fix the handling of the request list in the error path:
- Use irqsave for the lock as in the good path.
- Before removing the request, check if it is still in the list, a
call to dismiss_all might have changed the list in between.
- zfcp_qdio_send does not change the queue counters on failure,
trying revert something is wrong, so remove this.
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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When allocating fsf requests without qtcb, store the pointer to the
mempool in the fsf requests for later call to mempool_free. This
codepath is only used by the status_read requests.
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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The per adapter req_list_lock must be held with interrupts disabled, otherwise
we might end up with nice deadlocks as lockdep tells us (see below).
zfcp 0.0.1804: QDIO problem occurred.
=========================================================
[ INFO: possible irq lock inversion dependency detected ]
2.6.27-rc8-00035-g4a77035-dirty #86
---------------------------------------------------------
swapper/0 just changed the state of lock:
(&adapter->erp_lock){++..}, at: [<00000000002c82ae>] zfcp_erp_adapter_reopen+0x4e/0x8c
but this lock took another, hard-irq-unsafe lock in the past:
(&adapter->req_list_lock){-+..}
and interrupts could create inverse lock ordering between them.
[tons of backtraces, but only the interesting part follows]
the second lock's dependencies:
-> (&adapter->req_list_lock){-+..} ops: 2280627634176 {
initial-use at:
[<0000000000071f10>] __lock_acquire+0x504/0x18bc
[<000000000007335c>] lock_acquire+0x94/0xbc
[<00000000003d7224>] _spin_lock_irqsave+0x6c/0xb0
[<00000000002cf684>] zfcp_fsf_req_dismiss_all+0x50/0x140
[<00000000002c87ee>] zfcp_erp_adapter_strategy_generic+0x66/0x3d0
[<00000000002c9498>] zfcp_erp_thread+0x88c/0x1318
[<000000000001b0d2>] kernel_thread_starter+0x6/0xc
[<000000000001b0cc>] kernel_thread_starter+0x0/0xc
in-softirq-W at:
[<0000000000072172>] __lock_acquire+0x766/0x18bc
[<000000000007335c>] lock_acquire+0x94/0xbc
[<00000000003d7224>] _spin_lock_irqsave+0x6c/0xb0
[<00000000002ca73e>] zfcp_qdio_int_resp+0xbe/0x2ac
[<000000000027a1d6>] qdio_kick_inbound_handler+0x82/0xa0
[<000000000027daba>] tiqdio_inbound_processing+0x62/0xf8
[<0000000000047ba4>] tasklet_action+0x100/0x1f4
[<0000000000048b5a>] __do_softirq+0xae/0x154
[<0000000000021e4a>] do_softirq+0xea/0xf0
[<00000000000485de>] irq_exit+0xde/0xe8
[<0000000000268c64>] do_IRQ+0x160/0x1fc
[<00000000000261a2>] io_return+0x0/0x8
[<000000000001b8f8>] cpu_idle+0x17c/0x224
hardirq-on-W at:
[<0000000000072190>] __lock_acquire+0x784/0x18bc
[<000000000007335c>] lock_acquire+0x94/0xbc
[<00000000003d702c>] _spin_lock+0x5c/0x9c
[<00000000002caff6>] zfcp_fsf_req_send+0x3e/0x158
[<00000000002ce7fe>] zfcp_fsf_exchange_config_data+0x106/0x124
[<00000000002c8948>] zfcp_erp_adapter_strategy_generic+0x1c0/0x3d0
[<00000000002c98ea>] zfcp_erp_thread+0xcde/0x1318
[<000000000001b0d2>] kernel_thread_starter+0x6/0xc
[<000000000001b0cc>] kernel_thread_starter+0x0/0xc
}
... key at: [<0000000000e356c8>] __key.26629+0x0/0x8
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmit@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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It is possible that a remote port has a problem, the SCSI device gets
deleted after the rport timeout and then the timeout for pending SCSI
commands trigger an abort. For this case, don't delete the reference
from the SCSI device to the zfcp unit, so that we can still have the
reference to issue an abort request.
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
amd8111e: Fix rx return code
pktgen: fix multiple queue warning
mac80211.h: fix kernel-doc excesses
p54: fix build warnings
ath5k: Reset key cache on interface up, thus fixing resume
mac80211: correct warnings in minstrel rate control algorithm
RFKILL: fix input layer initialisation
p54: fix misbehavings when firmware can't be found
dm9601: runtime mac address change support
via-velocity: use driver string instead of dev->name before register_netdev()
drivers/net/wan/syncppp: Fix unused-var warnings
mlx4: Setting the correct offset for default mac address
mlx4_en: remove duplicated #include
ibm_newemac: Fix typo in flow control config option
ehea: Detect 16GB hugepages for firmware restriction
dmfe: check pci_alloc_consistent errors
qeth: avoid skb_under_panic for malformatted inbound data
qeth: remove unnecessary support ckeck in sysfs route6
qeth: fix offset error in non prealloc header path
qeth: remove non-recover-thread checkings
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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>
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__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>
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Remove the memset since zeroing the string is not needed and use
snprintf instead of sprintf.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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In case of I/O errors on a qdio subchannel qdio_shutdown may be
called twice by the qdio driver and by zfcp. Remove the
superfluous shutdown from qdio and let the upper layer driver
handle the error condition.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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To make the qeth driver more robust in case of malformatted inbound
packets due to hardware problems, an additional check for
OSN-card-type is added for OSN-type packets.
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Removing this check improves usability because you do not have to
set the device online to initially set ipv6 routing option.
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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For the non preallocated qeth header code path we should not
change the header length.
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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IP-threads have been removed from the qeth driver. Only the
recover-thread is left over. This makes checkings for
non-recover threads superfluous.
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'v28-range-hrtimers-for-linus-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (37 commits)
hrtimers: add missing docbook comments to struct hrtimer
hrtimers: simplify hrtimer_peek_ahead_timers()
hrtimers: fix docbook comments
DECLARE_PER_CPU needs linux/percpu.h
hrtimers: fix typo
rangetimers: fix the bug reported by Ingo for real
rangetimer: fix BUG_ON reported by Ingo
rangetimer: fix x86 build failure for the !HRTIMERS case
select: fix alpha OSF wrapper
select: fix alpha OSF wrapper
hrtimer: peek at the timer queue just before going idle
hrtimer: make the futex() system call use the per process slack value
hrtimer: make the nanosleep() syscall use the per process slack
hrtimer: fix signed/unsigned bug in slack estimator
hrtimer: show the timer ranges in /proc/timer_list
hrtimer: incorporate feedback from Peter Zijlstra
hrtimer: add a hrtimer_start_range() function
hrtimer: another build fix
hrtimer: fix build bug found by Ingo
hrtimer: make select() and poll() use the hrtimer range feature
...
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Conflicts:
kernel/time/tick-sched.c
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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* get rid of fake struct file/struct dentry in __blkdev_get()
* merge __blkdev_get() and do_open()
* get rid of flags argument of blkdev_get()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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->compat_ioctl() actually had been useless here; generic
logics works fine.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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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>
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* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
block: remove __generic_unplug_device() from exports
block: move q->unplug_work initialization
blktrace: pass zfcp driver data
blktrace: add support for driver data
block: fix current kernel-doc warnings
block: only call ->request_fn when the queue is not stopped
block: simplify string handling in elv_iosched_store()
block: fix kernel-doc for blk_alloc_devt()
block: fix nr_phys_segments miscalculation bug
block: add partition attribute for partition number
block: add BIG FAT WARNING to CONFIG_DEBUG_BLOCK_EXT_DEVT
softirq: Add support for triggering softirq work on softirqs.
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Conflicts:
arch/x86/kvm/i8254.c
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* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (39 commits)
[SCSI] sd: fix compile failure with CONFIG_BLK_DEV_INTEGRITY=n
libiscsi: fix locking in iscsi_eh_device_reset
libiscsi: check reason why we are stopping iscsi session to determine error value
[SCSI] iscsi_tcp: return a descriptive error value during connection errors
[SCSI] libiscsi: rename host reset to target reset
[SCSI] iscsi class: fix endpoint id handling
[SCSI] libiscsi: Support drivers initiating session removal
[SCSI] libiscsi: fix data corruption when target has to resend data-in packets
[SCSI] sd: Switch kernel printing level for DIF messages
[SCSI] sd: Correctly handle all combinations of DIF and DIX
[SCSI] sd: Always print actual protection_type
[SCSI] sd: Issue correct protection operation
[SCSI] scsi_error: fix target reset handling
[SCSI] lpfc 8.2.8 v2 : Add statistical reporting control and additional fc vendor events
[SCSI] lpfc 8.2.8 v2 : Add sysfs control of target queue depth handling
[SCSI] lpfc 8.2.8 v2 : Revert target busy in favor of transport disrupted
[SCSI] scsi_dh_alua: remove REQ_NOMERGE
[SCSI] lpfc 8.2.8 : update driver version to 8.2.8
[SCSI] lpfc 8.2.8 : Add MSI-X support
[SCSI] lpfc 8.2.8 : Update driver to use new Host byte error code DID_TRANSPORT_DISRUPTED
...
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This patch writes the channel and fabric latencies in nanoseconds per
request via blktrace for later analysis. The utilization of the inbound
and outbound adapter queue is also reported.
Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
Signed-off-by: Martin Peschke <mp3@de.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (46 commits)
UIO: Fix mapping of logical and virtual memory
UIO: add automata sercos3 pci card support
UIO: Change driver name of uio_pdrv
UIO: Add alignment warnings for uio-mem
Driver core: add bus_sort_breadthfirst() function
NET: convert the phy_device file to use bus_find_device_by_name
kobject: Cleanup kobject_rename and !CONFIG_SYSFS
kobject: Fix kobject_rename and !CONFIG_SYSFS
sysfs: Make dir and name args to sysfs_notify() const
platform: add new device registration helper
sysfs: use ilookup5() instead of ilookup5_nowait()
PNP: create device attributes via default device attributes
Driver core: make bus_find_device_by_name() more robust
usb: turn dev_warn+WARN_ON combos into dev_WARN
debug: use dev_WARN() rather than WARN_ON() in device_pm_add()
debug: Introduce a dev_WARN() function
sysfs: fix deadlock
device model: Do a quickcheck for driver binding before doing an expensive check
Driver core: Fix cleanup in device_create_vargs().
Driver core: Clarify device cleanup.
...
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__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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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>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
qlge: Fix page size ifdef test.
net: Rationalise email address: Network Specific Parts
dsa: fix compile bug on s390
netns: mib6 section fixlet
enic: Fix Kconfig headline description
de2104x: wrong MAC address fix
s390: claw compile fixlet
net: export genphy_restart_aneg
cxgb3: extend copyrights to 2008
cxgb3: update driver version
net/phy: add missing kernel-doc
pktgen: fix skb leak in case of failure
mISDN/dsp_cmx.c: fix size checks
misdn: use nonseekable_open()
net: fix driver build errors due to missing net/ip6_checksum.h include
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Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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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>
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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>
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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>
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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>
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Multipath is best at handling transport errors. If it gets a device
error then there is not much the multipath layer can do. It will just
access the same device but from a different path.
This patch breaks up failfast into device, transport and driver errors.
The multipath layers (md and dm mutlipath) only ask the lower levels to
fast fail transport errors. The user of failfast, read ahead, will ask
to fast fail on all errors.
Note that blk_noretry_request will return true if any failfast bit
is set. This allows drivers that do not support the multipath failfast
bits to continue to fail on any failfast error like before. Drivers
like scsi that are able to fail fast specific errors can check
for the specific fail fast type. In the next patch I will convert
scsi.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1075 commits)
myri10ge: update driver version number to 1.4.3-1.369
r8169: add shutdown handler
r8169: preliminary 8168d support
r8169: support additional 8168cp chipset
r8169: change default behavior for mildly identified 8168c chipsets
r8169: add a new 8168cp flavor
r8169: add a new 8168c flavor (bis)
r8169: add a new 8168c flavor
r8169: sync existing 8168 device hardware start sequences with vendor driver
r8169: 8168b Tx performance tweak
r8169: make room for more specific 8168 hardware start procedure
r8169: shuffle some registers handling around (8168 operation only)
r8169: new phy init parameters for the 8168b
r8169: update phy init parameters
r8169: wake up the PHY of the 8168
af_key: fix SADB_X_SPDDELETE response
ath9k: Fix return code when ath9k_hw_setpower() fails on reset
ath9k: remove nasty FAIL macro from ath9k_hw_reset()
gre: minor cleanups in netlink interface
gre: fix copy and paste error
...
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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>
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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>
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EMC Symmetrix Subsystem Control I/O through CKD dasd requires a
specific parameter list sent to the array via a Perform Subsystem
Function CCW. The Symmetrix response is retrieved from the array
via a Read Subsystem Data CCW.
Signed-off-by: Nigel Hislop <hislop_nigel@emc.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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The xpram driver uses a single block device queue for all of its
devices so far. With recent kernels removing xpram module fails to
clean up all sysfs files. The next time the xpram module is loaded
you'll get warnings:
WARNING: at fs/sysfs/dir.c:463 sysfs_add_one+0x5e/0x64()
sysfs: duplicate filename '35:0' can not be created
Modules linked in: xpram(+) [last unloaded: xpram]
Followed by the usual WARN_ON output, followed by an error message
from kobject_add_internal, followed by a badness in genhd. Allocating
a block queue per device fixes this.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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In the unsolicited interupt handler fake IRBs from CIO have to be
ignored because there is nothing to do.
The function dump_sense should not be called if there is no sense
data available.
Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Move cio's private simple udelay function to lib/delay.c and turn it
into something much more readable. So we have all implementations
at one place.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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The DCSS block device driver is modified to add >2G DCSSs support and
allow a DCSS block device to map to a set of contiguous DCSSs. The
extmem code is also modified to use new Diagnose x'64' subcodes for
>2G DCSSs.
Signed-off-by: Hongjie Yang <hongjie@us.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Add support for z10 HiperSockets multiwrite SBALs on output
queues. This is used on LPAR with EDDP enabled devices.
Signed-off-by: Klaus-Dieter Wacker <kdwacker@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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In cio_tpi only disable bottom halves when not in interrupt context.
Otherwise a WARN_ON gets triggered. Besides that, when we are in
interrupt context bottom halves are disabled anyway.
Fixes this one:
Badness at kernel/softirq.c:77
Modules linked in:
CPU: 2 Not tainted 2.6.26 #4
Process swapper (pid: 0, task: 000000003fe83db0, ksp: 000000003fea7d28)
Krnl PSW : 0404c00180000000 0000000000053f4e (__local_bh_disable+0xbe/0xcc)
R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:0 PM:0 EA:3
Krnl GPRS: 0000000000008ee0 00000000005f95e0 0000000000000000 0000000000000001
000000000020be92 0000000000000000 0000000000000210 00000000005d36c0
000000003fb5f4d8 0000000000000000 000000000020bed0 000000003fb5f3c8
00000000009be920 0000000000364898 000000003fb5f408 000000003fb5f3c8
Krnl Code: 0000000000053f42: bf2f1000 icm %r2,15,0(%r1)
0000000000053f46: a774ffc5 brc 7,53ed0
0000000000053f4a: a7f40001 brc 15,53f4c
>0000000000053f4e: a7280001 lhi %r2,1
0000000000053f52: 50201000 st %r2,0(%r1)
0000000000053f56: a7f4ffbd brc 15,53ed0
0000000000053f5a: 0707 bcr 0,%r7
0000000000053f5c: a7f13fc0 tmll %r15,16320
Call Trace:
([<0000000000000210>] 0x210)
[<0000000000053f86>] local_bh_disable+0x2a/0x38
[<000000000020bed0>] wait_cons_dev+0xd4/0x154
[<0000000000247cb2>] raw3215_make_room+0x6a/0x1a8
[<000000000024861a>] raw3215_write+0x86/0x28c
[<00000000002488a0>] con3215_write+0x80/0x110
[<000000000004c3e0>] __call_console_drivers+0xc8/0xe4
[<000000000004c47e>] _call_console_drivers+0x82/0xc4
[<000000000004c744>] release_console_sem+0x218/0x2c0
[<000000000004cf64>] vprintk+0x3c0/0x504
[<0000000000354a4a>] printk+0x52/0x64
[<0000000000088004>] __print_symbol+0x40/0x50
[<0000000000071dbc>] print_stack_trace+0x78/0xac
[<0000000000079e78>] print_lock_dependencies+0x148/0x208
[<000000000007a050>] print_irq_inversion_bug+0x118/0x15c
[<000000000007a106>] check_usage_forwards+0x72/0x84
[<000000000007a36e>] mark_lock+0x1d2/0x594
[<000000000007baca>] __lock_acquire+0x886/0xf48
[<000000000007c234>] lock_acquire+0xa8/0xe0
[<0000000000350316>] _write_lock+0x56/0x98
[<000000000026cd92>] zfcp_erp_adapter_reopen+0x4e/0x8c
[<000000000026f1e8>] zfcp_qdio_int_resp+0x2e4/0x2f4
[<00000000002210f4>] qdio_int_handler+0x274/0x888
[<00000000002177b6>] ccw_device_call_handler+0x6e/0xd8
[<0000000000215336>] ccw_device_irq+0xd6/0x160
[<0000000000212f88>] io_subchannel_irq+0x8c/0x118
[<000000000020c120>] do_IRQ+0x1d0/0x1fc
[<00000000000270b2>] io_return+0x0/0x8
[<000000000001c8a4>] cpu_idle+0x178/0x21c
([<000000000001c884>] cpu_idle+0x158/0x21c)
[<00000000003483a2>] start_secondary+0xb6/0xc8
INFO: lockdep is turned off.
Last Breaking-Event-Address:
[<0000000000053f4a>] __local_bh_disable+0xba/0xcc
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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