26 May, 2011
2 commits
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Merge irq.c and s390_ext.c into irq.c. That way all external interrupt
related functions are together.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Interrupt sources like pfault, sclp, dasd_diag and virtio all use the
service signal external interrupt subclass mask in control register 0
to enable and disable the corresponding interrupt.
Because no reference counting is implemented each subsystem thinks it
is the only user of subclass and sets and clears the bit like it wants.
This leads to case that unloading the dasd diag module under z/VM
causes both sclp and pfault interrupts to be masked. The result will
be locked up system sooner or later.
Fix this by introducing a new way to set (register) and clear
(unregister) the service signal subclass mask bit in cr0.
Also convert all drivers.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky
23 May, 2011
7 commits
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Provide sysfs attributes that contain the CPC name and the HMC network
name of the machine the operating system is running on. This information
is retrieved with the operation communication parameters (OCF) sclp
interface.Signed-off-by: Martin Schwidefsky
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Move gds vector/subvector find functions to the sclp header file.
Simplify event buffer dissection in sclp tty code.Signed-off-by: Martin Schwidefsky
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The sendmask check is not needed. Remove it.
Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Return codes are on purpose not handled or used. So remove them.
Acked-by: Michael Holzheu
Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Fix return code handling within monwrite_new_hdr(). Return code handling
is everwhere implemented, the return code of the diagnose function was
just not passed.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Remove trivially unused variables as detected with -Wunused-but-set-variable.
Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Remove the tape block device driver. It's not of real use but has
already created some confusion when users wanted to access tape devices
and used the block device nodes instead of the character device nodes.Also remove the whole tape documentation since it's completely outdated
and we have the device drivers book which is the place where everything
is properly documented.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky
18 May, 2011
1 commit
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* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
block: don't delay blk_run_queue_async
scsi: remove performance regression due to async queue run
blk-throttle: Use task_subsys_state() to determine a task's blkio_cgroup
block: rescan partitions on invalidated devices on -ENOMEDIA too
cdrom: always check_disk_change() on open
block: unexport DISK_EVENT_MEDIA_CHANGE for legacy/fringe drivers
10 May, 2011
1 commit
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Fix initial usecount of attached and assigned storage increments so
they can be set offline.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky
22 Apr, 2011
1 commit
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In-kernel disk event polling doesn't matter for legacy/fringe drivers
and may lead to infinite event loop if ->check_events() implementation
generates events on level condition instead of edge.Now that block layer supports suppressing exporting unlisted events,
simply leaving disk->events cleared allows these drivers to keep the
internal revalidation behavior intact while avoiding weird
interactions with userland event handler.Signed-off-by: Tejun Heo
Cc: Kay Sievers
Signed-off-by: Jens Axboe
31 Mar, 2011
1 commit
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Fixes generated by 'codespell' and manually reviewed.
Signed-off-by: Lucas De Marchi
26 Mar, 2011
1 commit
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* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
[S390] cmpxchg: implement cmpxchg64()
[S390] xchg/cmpxchg: move to own header file
[S390] ccwgroup_driver: remove duplicate members
[S390] ccw_bus_type: make it static
[S390] ccw_driver: remove duplicate members
[S390] qdio: prevent handling of buffers if count is zero
[S390] setup: register bss section as resource
[S390] setup: simplify setup_resources()
[S390] wire up sys_syncfs
[S390] wire up sys_clock_adjtime
[S390] wire up sys_open_by_handle_at
[S390] wire up sys_name_to_handle_at
[S390] oprofile: disable hw sampling for CONFIG_32BIT
[S390] early: limit savesys cmd string handling
[S390] early: Fix possible overlapping data buffer
25 Mar, 2011
1 commit
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* 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block: (65 commits)
Documentation/iostats.txt: bit-size reference etc.
cfq-iosched: removing unnecessary think time checking
cfq-iosched: Don't clear queue stats when preempt.
blk-throttle: Reset group slice when limits are changed
blk-cgroup: Only give unaccounted_time under debug
cfq-iosched: Don't set active queue in preempt
block: fix non-atomic access to genhd inflight structures
block: attempt to merge with existing requests on plug flush
block: NULL dereference on error path in __blkdev_get()
cfq-iosched: Don't update group weights when on service tree
fs: assign sb->s_bdi to default_backing_dev_info if the bdi is going away
block: Require subsystems to explicitly allocate bio_set integrity mempool
jbd2: finish conversion from WRITE_SYNC_PLUG to WRITE_SYNC and explicit plugging
jbd: finish conversion from WRITE_SYNC_PLUG to WRITE_SYNC and explicit plugging
fs: make fsync_buffers_list() plug
mm: make generic_writepages() use plugging
blk-cgroup: Add unaccounted time to timeslice_used.
block: fixup plugging stubs for !CONFIG_BLOCK
block: remove obsolete comments for blkdev_issue_zeroout.
blktrace: Use rq->cmd_flags directly in blk_add_trace_rq.
...Fix up conflicts in fs/{aio.c,super.c}
23 Mar, 2011
1 commit
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Remove the owner and name members of struct
ccw_driver and convert all drivers to store
this data in the embedded struct device_driver.Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky
17 Mar, 2011
1 commit
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* 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: (76 commits)
pch_uart: reference clock on CM-iTC
pch_phub: add new device ML7213
n_gsm: fix UIH control byte : P bit should be 0
n_gsm: add a documentation
serial: msm_serial_hs: Add MSM high speed UART driver
tty_audit: fix tty_audit_add_data live lock on audit disabled
tty: move cd1865.h to drivers/staging/tty/
Staging: tty: fix build with epca.c driver
pcmcia: synclink_cs: fix prototype for mgslpc_ioctl()
Staging: generic_serial: fix double locking bug
nozomi: don't use flush_scheduled_work()
tty/serial: Relax the device_type restriction from of_serial
MAINTAINERS: Update HVC file patterns
tty: phase out of ioctl file pointer for tty3270 as well
tty: forgot to remove ipwireless from drivers/char/pcmcia/Makefile
pch_uart: Fix DMA channel miss-setting issue.
pch_uart: fix exclusive access issue
pch_uart: fix auto flow control miss-setting issue
pch_uart: fix uart clock setting issue
pch_uart : Use dev_xxx not pr_xxx
...Fix up trivial conflicts in drivers/misc/pch_phub.c (same patch applied
twice, then changes to the same area in one branch)
10 Mar, 2011
3 commits
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Conflicts:
block/blk-core.c
block/blk-flush.c
drivers/md/raid1.c
drivers/md/raid10.c
drivers/md/raid5.c
fs/nilfs2/btnode.c
fs/nilfs2/mdt.cSigned-off-by: Jens Axboe
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Code has been converted over to the new explicit on-stack plugging,
and delay users have been converted to use the new API for that.
So lets kill off the old plugging along with aops->sync_page().Signed-off-by: Jens Axboe
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Convert from ->media_changed() to ->check_events().
s390/tape_block buffers media changed state and clears it on
revalidation. It will behave correctly with kernel event polling.Signed-off-by: Tejun Heo
Cc: Jens Axboe
Cc: Kay Sievers
Cc: Martin Schwidefsky
Cc: Heiko Carstens
04 Mar, 2011
2 commits
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The 34xx and 3590 tape driver uses the system work queue to defer work
from the interrupt function to process context, e.g. a medium sense
after an unsolicited interrupt. The tape commands started by the work
handler need to be asynchronous, otherwise a deadlock on the system
work queue can occur.Signed-off-by: Martin Schwidefsky
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The "ct" variable should be an unsigned int. Both struct kbdiacrs
->kb_cnt and struct kbd_data ->accent_table_size are unsigned ints.Making it signed causes a problem in KBDIACRUC because the user could
set the signed bit and cause a buffer overflow.Cc:
Signed-off-by: Dan Carpenter
Signed-off-by: Martin Schwidefsky
26 Feb, 2011
1 commit
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The patch "tty: now phase out the ioctl file pointer for good" missed
the tty3270 driver. This is the missing piece.Signed-off-by: Heiko Carstens
Signed-off-by: Greg Kroah-Hartman
11 Jan, 2011
1 commit
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Remove kobject.h from files which don't need it, notably,
sched.h and fs.h.Signed-off-by: Alexey Dobriyan
Signed-off-by: Linus Torvalds
08 Jan, 2011
1 commit
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* 'for-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: (33 commits)
usb: don't use flush_scheduled_work()
speedtch: don't abuse struct delayed_work
media/video: don't use flush_scheduled_work()
media/video: explicitly flush request_module work
ioc4: use static work_struct for ioc4_load_modules()
init: don't call flush_scheduled_work() from do_initcalls()
s390: don't use flush_scheduled_work()
rtc: don't use flush_scheduled_work()
mmc: update workqueue usages
mfd: update workqueue usages
dvb: don't use flush_scheduled_work()
leds-wm8350: don't use flush_scheduled_work()
mISDN: don't use flush_scheduled_work()
macintosh/ams: don't use flush_scheduled_work()
vmwgfx: don't use flush_scheduled_work()
tpm: don't use flush_scheduled_work()
sonypi: don't use flush_scheduled_work()
hvsi: don't use flush_scheduled_work()
xen: don't use flush_scheduled_work()
gdrom: don't use flush_scheduled_work()
...Fixed up trivial conflict in drivers/media/video/bt8xx/bttv-input.c
as per Tejun.
05 Jan, 2011
8 commits
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When the seqfile /proc/cpuinfo gets accesses for each possible cpu
loops_per_jiffy gets recalculated. However its value is only needed
on first access.
In addition loops_per_jiffy should be recalculated when the machine
reports a capability change.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Use register_external_interrupt() instead of register_early_external_interrupt().
The early variant is not necessary since kmalloc works already.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Add support for VMUR I/O interrupt statistics in /proc/interrupts.
Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Add support for ccw based tape I/O interrupt statistics in /proc/interrupts.
Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Add support for 3270 I/O interrupt statistics in /proc/interrupts.
Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Add support for 3215 I/O interrupt statistics in /proc/interrupts.
Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Up to now /proc/interrupts only has statistics for external and i/o
interrupts but doesn't split up them any further.
This patch adds a line for every single interrupt source so that it
is possible to easier tell what the machine is/was doing.
Part of the output now looks like this;CPU0 CPU2 CPU4
EXT: 3898 4232 2305
I/O: 782 315 245
CLK: 1029 1964 727 [EXT] Clock Comparator
IPI: 2868 2267 1577 [EXT] Signal Processor
TMR: 0 0 0 [EXT] CPU Timer
TAL: 0 0 0 [EXT] Timing Alert
PFL: 0 0 0 [EXT] Pseudo Page Fault
[...]
NMI: 0 1 1 [NMI] Machine ChecksSigned-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Make use of def_bool and def_tristate where possible and add sensible
defaults to the config symbols where applicable. This shortens the
defconfig file by another ~40 lines.Signed-off-by: Martin Schwidefsky
24 Dec, 2010
1 commit
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flush_scheduled_work() is deprecated and scheduled to be removed.
* tape_3590: Create and use tape_3590_wq instead of the system_wq.
* tape_block: Directly flush requeue_task on cleanup instead of using
flush_scheduled_work().Signed-off-by: Tejun Heo
Cc: Martin Schwidefsky
Cc: Heiko Carstens
Cc: linux390@de.ibm.com
Cc: linux-s390@vger.kernel.org
18 Nov, 2010
1 commit
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The big kernel lock has been removed from all these files at some point,
leaving only the #include.Remove this too as a cleanup.
Signed-off-by: Arnd Bergmann
Signed-off-by: Linus Torvalds
10 Nov, 2010
2 commits
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If automatic purge is enabled for a vmlogrdr device, old records are
purged before an IUCV recording service is switched on or off. If z/VM
generates a large number of records between purging and switching the
recording service off, these records remain queued, and may have a
negative performance impact on the z/VM system. To avoid this problem,
we need to purge the records after recording is switched off.Signed-off-by: Stefan Weinhuber
Signed-off-by: Martin Schwidefsky -
Add uevent notifications for tape cartridge load and tape
cartridge unload events.Signed-off-by: Martin Schwidefsky
29 Oct, 2010
1 commit
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Get rid of the format string "%s" usage with volatile strings
to prevent use after free errors in the s390dbf.Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky
25 Oct, 2010
2 commits
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Read external interrupts parameters from the lowcore in the first
level interrupt handler in entry[64].S.Signed-off-by: Martin Schwidefsky
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Signed-off-by: Joe Perches
Signed-off-by: Martin Schwidefsky
