13 Oct, 2007
2 commits
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* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: (75 commits)
PM: merge device power-management source files
sysfs: add copyrights
kobject: update the copyrights
kset: add some kerneldoc to help describe what these strange things are
Driver core: rename ktype_edd and ktype_efivar
Driver core: rename ktype_driver
Driver core: rename ktype_device
Driver core: rename ktype_class
driver core: remove subsystem_init()
sysfs: move sysfs file poll implementation to sysfs_open_dirent
sysfs: implement sysfs_open_dirent
sysfs: move sysfs_dirent->s_children into sysfs_dirent->s_dir
sysfs: make sysfs_root a regular directory dirent
sysfs: open code sysfs_attach_dentry()
sysfs: make s_elem an anonymous union
sysfs: make bin attr open get active reference of parent too
sysfs: kill unnecessary NULL pointer check in sysfs_release()
sysfs: kill unnecessary sysfs_get() in open paths
sysfs: reposition sysfs_dirent->s_mode.
sysfs: kill sysfs_update_file()
... -
This changes the uevent buffer functions to use a struct instead of a
long list of parameters. It does no longer require the caller to do the
proper buffer termination and size accounting, which is currently wrong
in some places. It fixes a known bug where parts of the uevent
environment are overwritten because of wrong index calculations.Many thanks to Mathieu Desnoyers for finding bugs and improving the
error handling.Signed-off-by: Kay Sievers
Cc: Mathieu Desnoyers
Cc: Cornelia Huck
Signed-off-by: Greg Kroah-Hartman
12 Oct, 2007
14 commits
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Signed-off-by: Ursula Braun
Signed-off-by: Martin Schwidefsky
Signed-off-by: Heiko Carstens -
According to C99 6.3.2.3 it's undefined what happens if a converted
pointer is used to call a function whose type is not compatible with
the pointed-to type.
That's what the qdio code is doing, so fix it.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Also removes a bunch of ^L in drivers/s390/cio/cmf.c
Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
There was the possibilty that an action like ccw_device_set_offline()
triggered by a device gone machine check might trigger a not oper
event. Unfortunately, this could lead to the situation that we tried
to unregister a subchannel twice: Once from the slow path evaluation,
and once via the not oper event.Fix this by always using the same mechanism (css_schedule_eval()) for
triggering the unregister. This makes sure that unregistration will
only be done once. As an added bonus, it also simplyfies the code.Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky -
Don't forget to set dev->groups for early ccw devices like the
console device so the default attributes are created.Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky -
Disable channel measurements for all ccw devices via the ccw bus's
shutdown method. Clear residual cmf related information that may be
in the schib when setting up a new subchannel.Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky -
Introduce a shutdown method for the ccw bus that calls the driver
specific shutdown method in struct ccw_driver.
Switch zfcp to the new ccw_driver shutdown method.Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky -
Make sure channel path measurements are disabled via a reboot notifier
since we cannot rely on userspace to disable it again after enabling
it. This is 1. clean and 2. makes sure that channel path measurements
do not stay enabled after a reboot not involving a subsystem reset
(which would lead to the channel subsystem scribbling onto random
memory).Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky -
Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky -
Comment a bunch of function in docbook style and convert existing
comments on structures to docbook.Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky
Signed-off-by: Heiko Carstens -
- Fix existing kerneldoc-style comments.
- Move descriptions of functions from cmb.h to cmf.c.Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky
Signed-off-by: Heiko Carstens -
Fix some formatting and correct a comment.
Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky
Signed-off-by: Heiko Carstens -
subchannel_add_files() no longer exists, remove from header.
Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky
Signed-off-by: Heiko Carstens -
Rename css[] to channel_subsystems[] to avoid name clashes.
Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky
Signed-off-by: Heiko Carstens
22 Aug, 2007
5 commits
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There are several s390 diagnose calls, which must be executed below the
2GB memory boundary. In order to enforce this, those diagnoses must be
compiled into the kernel. Currently diag 14 can be called within the
vmur kernel module from addresses above 2GB. This leads to specification
exceptions. This patch moves diag10, diag14 and diag210 into the new
diag.c file.Signed-off-by: Michael Holzheu
Signed-off-by: Martin Schwidefsky
Signed-off-by: Heiko Carstens -
Hipersocket Multicast queue works asynchronously. When sending buffers,
the buffer state change may happen delayed. The tasklet for checking
changes in the outbound queue excluded IQDIO async queues from this
process. This created either a hang situation when the queue ran full,
or presented a hang situation a interface close time.
The tasklet processing is changed to include IQDIO async queues when
requesting buffer state refresh.Signed-off-by: Klaus D. Wacker
Signed-off-by: Martin Schwidefsky -
QDIO returned from EQBS instruction in any case after return code
CCQ=96 was issued regardless whether buffer states for at least one
buffer were extracted or not.
This caused FCP devices to hang when running under z/VM and having
QIOASSASIST=ON and having high I/O rates.
In order to fix this qdio return code processing of EQBS instruction
after CCQ=96 is changed that buffers are returned and if no buffers
where extracted the instruction is repeated at once.Signed-off-by: Klaus D. Wacker
Signed-off-by: Martin Schwidefsky
Signed-off-by: Heiko Carstens -
cmf currently prints a message that more than 4096 channels are not
allowed in basic mode - however, this can only be enforced if cmf was
a module (which is no longer possible). It makes much more sense to
not check the specified number of channels and just print a message if
the block for basic mode could not be allocated (which may happen for
any number of specified channels).Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky -
Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky
Signed-off-by: Heiko Carstens
10 Aug, 2007
2 commits
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The slsb structure contained at the beginning of the qdio_q structure
must start on a 256 byte boundary. To make sure this is the case even
if slab debugging is turned on create an own slab cache for qdio_q
structures.
Besides that don't use the slab allocator to allocate whole pages. Use
the page allocator instead.
Also fix a few memory leaks in error handling code.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
sch->lock has been allocated in cio_validate_subchannel(), it must be
freed if cio_modify() fails.Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky
27 Jul, 2007
6 commits
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- Localize more of the init calls in init_channel_subsystem().
- Print a warning if init_channel_subsystem() failed.Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky -
Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky -
- Remove unneeded messages.
- Move some messages into the debug feature.
- Use dev_* where appropriate.
- Use "cio: " prefix consistently.Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky -
http://marc.info/?l=linux-kernel&m=118481061928246&w=2 seems to
indicate disfavour of "deprecated", so let's just kill it now.Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky -
Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky -
Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky
17 Jul, 2007
3 commits
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Signed-off-by: Jan Glauber
Signed-off-by: Martin Schwidefsky -
Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky -
When running QIOASSIST enabled qdio devices in a z/VM environment
the output queue for such devices stall in heavy workload situations.
When SQBS and EQBS instructions returns CCQ=96 qdio does not reissue
the instruction again with the register settings done by millicode
but processed the returned qdio buffer. This is wrong. qdio has to
reissue the instruction once again on CCQ=96, as we already do it
for CCQ=97.Signed-off-by: Frank Pavlic
Signed-off-by: Martin Schwidefsky
12 Jul, 2007
2 commits
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Well, first of all, I don't want to change so many files either.
What I do:
Adding a new parameter "struct bin_attribute *" in the
.read/.write methods for the sysfs binary attributes.In fact, only the four lines change in fs/sysfs/bin.c and
include/linux/sysfs.h do the real work.
But I have to update all the files that use binary attributes
to make them compatible with the new .read and .write methods.
I'm not sure if I missed any. :(Why I do this:
For a sysfs attribute, we can get a pointer pointing to the
struct attribute in the .show/.store method,
while we can't do this for the binary attributes.
I don't know why this is different, but this does make it not
so handy to use the binary attributes as the regular ones.
So I think this patch is reasonable. :)Who benefits from it:
The patch that exposes ACPI tables in sysfs
requires such an improvement.
All the table binary attributes share the same .read method.
Parameter "struct bin_attribute *" is used to get
the table signature and instance number which are used to
distinguish different ACPI table binary attributes.Without this parameter, we need to offer different .read methods
for different ACPI table binary attributes.
This is impossible as there are various ACPI tables on different
platforms, and we don't know what they are until they are loaded.Signed-off-by: Zhang Rui
Signed-off-by: Greg Kroah-Hartman -
sysfs is now completely out of driver/module lifetime game. After
deletion, a sysfs node doesn't access anything outside sysfs proper,
so there's no reason to hold onto the attribute owners. Note that
often the wrong modules were accounted for as owners leading to
accessing removed modules.This patch kills now unnecessary attribute->owner. Note that with
this change, userland holding a sysfs node does not prevent the
backing module from being unloaded.For more info regarding lifetime rule cleanup, please read the
following message.http://article.gmane.org/gmane.linux.kernel/510293
(tweaked by Greg to not delete the field just yet, to make it easier to
merge things properly.)Signed-off-by: Tejun Heo
Cc: Cornelia Huck
Cc: Andrew Morton
Signed-off-by: Greg Kroah-Hartman
10 Jul, 2007
1 commit
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If a virtual address is passed to the diag210 function under 31 bit, we get a
programming exception, since diag 210 only works with physical addresses. To
fix this, the content of the diag210 data structure is copied to a local
structure and the physical address of that structure is passed to diagnose 210.Signed-off-by: Michael Holzheu
Signed-off-by: Martin Schwidefsky
31 May, 2007
2 commits
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Deregister ccw device when device failure is detected during offline-
processing (e.g. when no last-path-gone indication was presented by
the hardware) to prevent the device from entering a non-recoverable
not-operational state.Signed-off-by: Peter Oberparleiter
Signed-off-by: Martin Schwidefsky -
We can't deregister disconnected and orphaned devices directly from
the online attribute's store method, but must take a detour.Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky
10 May, 2007
3 commits
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Statement has been inadvertently lost with commit
00c0c6466c66bdf05f2a3dcf59e6895179ea8b76.Signed-off-by: Ursula Braun
Signed-off-by: Martin Schwidefsky -
Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky -
The function shouldn't have existed in the first place (not MSS-aware).
Introduce a new function ccw_device_get_id() that extracts the
ccw_dev_id structure of a ccw device and convert all users of
_ccw_device_get_device_number to ccw_device_get_id.Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky