06 Jan, 2009
1 commit
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... and don't bother in callers. Don't bother with zeroing i_blocks,
while we are at it - it's already been zeroed.i_mode is not worth the effort; it has no common default value.
Signed-off-by: Al Viro
29 Dec, 2008
1 commit
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* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: (85 commits)
[S390] provide documentation for hvc_iucv kernel parameter.
[S390] convert ctcm printks to dev_xxx and pr_xxx macros.
[S390] convert zfcp printks to pr_xxx macros.
[S390] convert vmlogrdr printks to pr_xxx macros.
[S390] convert zfcp dumper printks to pr_xxx macros.
[S390] convert cpu related printks to pr_xxx macros.
[S390] convert qeth printks to dev_xxx and pr_xxx macros.
[S390] convert sclp printks to pr_xxx macros.
[S390] convert iucv printks to dev_xxx and pr_xxx macros.
[S390] convert ap_bus printks to pr_xxx macros.
[S390] convert dcssblk and extmem printks messages to pr_xxx macros.
[S390] convert monwriter printks to pr_xxx macros.
[S390] convert s390 debug feature printks to pr_xxx macros.
[S390] convert monreader printks to pr_xxx macros.
[S390] convert appldata printks to pr_xxx macros.
[S390] convert setup printks to pr_xxx macros.
[S390] convert hypfs printks to pr_xxx macros.
[S390] convert time printks to pr_xxx macros.
[S390] convert cpacf printks to pr_xxx macros.
[S390] convert cio printks to pr_xxx macros.
...
25 Dec, 2008
1 commit
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Signed-off-by: Michael Holzheu
Signed-off-by: Martin Schwidefsky
14 Nov, 2008
1 commit
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Wrap access to task credentials so that they can be separated more easily from
the task_struct during the introduction of COW creds.Change most current->(|e|s|fs)[ug]id to current_(|e|s|fs)[ug]id().
Change some task->e?[ug]id to task_e?[ug]id(). In some places it makes more
sense to use RCU directly rather than a convenient wrapper; these will be
addressed by later patches.Signed-off-by: David Howells
Reviewed-by: James Morris
Acked-by: Serge Hallyn
Cc: Martin Schwidefsky
Cc: Heiko Carstens
Cc: linux-s390@vger.kernel.org
Signed-off-by: James Morris
14 Oct, 2008
1 commit
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This is a much better version of a previous patch to make the parser
tables constant. Rather than changing the typedef, we put the "const" in
all the various places where its required, allowing the __initconst
exception for nfsroot which was the cause of the previous trouble.This was posted for review some time ago and I believe its been in -mm
since then.Signed-off-by: Steven Whitehouse
Cc: Alexander Viro
Signed-off-by: Linus Torvalds
14 Jul, 2008
1 commit
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Signed-off-by: Akinobu Mita
Signed-off-by: Andrew Morton
Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky
25 Jan, 2008
4 commits
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There is no need for kobject_unregister() anymore, thanks to Kay's
kobject cleanup changes, so replace all instances of it with
kobject_put().Cc: Kay Sievers
Signed-off-by: Greg Kroah-Hartman -
We don't need a kset here, a simple kobject will do just fine, so
dynamically create the kobject and use it.Thanks to Cornelia for the build fix.
Cc: Kay Sievers
Cc: Michael Holzheu
Cc: Cornelia Huck
Signed-off-by: Greg Kroah-Hartman -
We don't need a kset here, a simple kobject will do just fine, so
dynamically create the kobject and use it.We also rename hypervisor_subsys to hypervisor_kset to catch all users
of the variable.Cc: Kay Sievers
Signed-off-by: Greg Kroah-Hartman -
We don't need a "default" ktype for a kset. We should set this
explicitly every time for each kset. This change is needed so that we
can make ksets dynamic, and cleans up one of the odd, undocumented
assumption that the kset/kobject/ktype model has.This patch is based on a lot of help from Kay Sievers.
Nasty bug in the block code was found by Dave Young
Cc: Kay Sievers
Cc: Dave Young
Signed-off-by: Greg Kroah-Hartman
22 Aug, 2007
1 commit
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hypfs removes the whole hypfs directory tree and creates a new one, when a
process triggers an update by writing to the "update" attribute. When removing
and creating files, it is necessary to lock the inode of the parent directory
where the files live. Currently hypfs does not lock the parent inode, which
can lead to inode corruption. This patch:
* Introduces correct locking
* Fixes i_nlink reference counting for inodes, when creating directories
* Adds info printk, when hypfs filesystem has been mountedSigned-off-by: Michael Holzheu
Signed-off-by: Martin Schwidefsky
Signed-off-by: Heiko Carstens
10 Aug, 2007
1 commit
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Signed-off-by: Michael Holzheu
Signed-off-by: Martin Schwidefsky
31 May, 2007
1 commit
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To be able to run with the diagnose 224 switched off, a potential
specification exception has to be handled.Signed-off-by: Michael Holzheu
Signed-off-by: Martin Schwidefsky
10 May, 2007
1 commit
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This patch fixes compilation on s390 after the removal of
struct subsystem.Signed-off-by: Cornelia Huck
Signed-off-by: Martin Schwidefsky
13 Feb, 2007
1 commit
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Many struct file_operations in the kernel can be "const". Marking them const
moves these to the .rodata section, which avoids false sharing with potential
dirty data. In addition it'll catch accidental writes at compile time to
these shared resources.[akpm@osdl.org: sparc64 fix]
Signed-off-by: Arjan van de Ven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
06 Feb, 2007
1 commit
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This is an extension of the already existing hypfs for LPAR (DIAG 204).
Data returned by DIAG 2fc is exported using the s390_hypfs when Linux
is running under z/VM. Information about cpus and memory is provided.
Data is put into different virtual files which can be accessed from user
space. All values are represented as ASCII stringsSigned-off-by: Michael Holzheu
Signed-off-by: Martin Schwidefsky
16 Dec, 2006
1 commit
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Correct typo to make hypfs work on systems that support only diag204
subcode 4 and fix error handling in hypfs_diag_init.Signed-off-by: Christian Borntraeger
Signed-off-by: Martin Schwidefsky
09 Dec, 2006
1 commit
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Signed-off-by: Josef Sipek
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
01 Oct, 2006
1 commit
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This patch vectorizes aio_read() and aio_write() methods to prepare for
collapsing all aio & vectored operations into one interface - which is
aio_read()/aio_write().Signed-off-by: Badari Pulavarty
Signed-off-by: Christoph Hellwig
Cc: Michael Holzheu
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
28 Sep, 2006
2 commits
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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
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sparse complains, if we use bitwise operations on enums. Cast enum to
long in order to fix that problem!Signed-off-by: Michael Holzheu
Signed-off-by: Martin Schwidefsky
27 Sep, 2006
2 commits
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This eliminates the i_blksize field from struct inode. Filesystems that want
to provide a per-inode st_blksize can do so by providing their own getattr
routine instead of using the generic_fillattr() function.Note that some filesystems were providing pretty much random (and incorrect)
values for i_blksize.[bunk@stusta.de: cleanup]
[akpm@osdl.org: generic_fillattr() fix]
Signed-off-by: "Theodore Ts'o"
Signed-off-by: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The following patches reduce the size of the VFS inode structure by 28 bytes
on a UP x86. (It would be more on an x86_64 system). This is a 10% reduction
in the inode size on a UP kernel that is configured in a production mode
(i.e., with no spinlock or other debugging functions enabled; if you want to
save memory taken up by in-core inodes, the first thing you should do is
disable the debugging options; they are responsible for a huge amount of bloat
in the VFS inode structure).This patch:
The filesystem or device-specific pointer in the inode is inside a union,
which is pretty pointless given that all 30+ users of this field have been
using the void pointer. Get rid of the union and rename it to i_private, with
a comment to explain who is allowed to use the void pointer. This is just a
cleanup, but it allows us to reuse the union 'u' for something something where
the union will actually be used.[judith@osdl.org: powerpc build fix]
Signed-off-by: "Theodore Ts'o"
Signed-off-by: Judith Lebzelter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
20 Sep, 2006
4 commits
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When an invalid mount option is specified, no root inode is created
for hypfs, hypfs_fill_super() returns with -EINVAL and then
hypfs_kill_super() is called. hypfs_kill_super() does not check if
the root inode has been initialized. This patch adds this check.Signed-off-by: Michael Holzheu
Signed-off-by: Martin Schwidefsky -
Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Add casts to avoid compiler warnings.
Signed-off-by: Michael Holzheu
Signed-off-by: Martin Schwidefsky -
Correct some comments in the hypervisor filesystem.
Signed-off-by: Michael Holzheu
Signed-off-by: Martin Schwidefsky
12 Jul, 2006
1 commit
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Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky
23 Jun, 2006
2 commits
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Update hypfs for dhowells API changes.
Cc: Pekka Enberg
Cc: Ingo Oeser
Cc: Joern Engel
Cc: Martin Schwidefsky
Cc: Michael Holzheu
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
On zSeries machines there exists an interface which allows the operating
system to retrieve LPAR hypervisor accounting data. For example, it is
possible to get usage data for physical and virtual cpus. In order to
provide this information to user space programs, I implemented a new
virtual Linux file system named 's390_hypfs' using the Linux 2.6 libfs
framework. The name 's390_hypfs' stands for 'S390 Hypervisor Filesystem'.
All the accounting information is put into different virtual files which
can be accessed from user space. All data is represented as ASCII strings.When the file system is mounted the accounting information is retrieved and
a file system tree is created with the attribute files containing the cpu
information. The content of the files remains unchanged until a new update
is made. An update can be triggered from user space through writing
'something' into a special purpose update file.We create the following directory structure:
/
update
cpus/
type
mgmtime
...
hyp/
type
systems/
cpus/
type
mgmtime
cputime
onlinetime
...
cpus/
...- update: File to trigger update
- cpus/: Directory for all physical cpus
- cpus//: Directory for one physical cpu.
- cpus//type: Type name of physical zSeries cpu.
- cpus//mgmtime: Physical-LPAR-management time in microseconds.
- hyp/: Directory for hypervisor information
- hyp/type: Typ of hypervisor (currently only 'LPAR Hypervisor')
- systems/: Directory for all LPARs
- systems//: Directory for one LPAR.
- systems//cpus//: Directory for the virtual cpus
- systems//cpus//type: Typ of cpu.
- systems//cpus//mgmtime:
Accumulated number of microseconds during which a physical
CPU was assigned to the logical cpu and the cpu time was
consumed by the hypervisor and was not provided to
the LPAR (LPAR overhead).- systems//cpus//cputime:
Accumulated number of microseconds during which a physical CPU
was assigned to the logical cpu and the cpu time was consumed
by the LPAR.- systems//cpus//onlinetime:
Accumulated number of microseconds during which the logical CPU
has been online.As mount point for the filesystem /sys/hypervisor/s390 is created.
The update process is triggered when writing 'something' into the
'update' file at the top level hypfs directory. You can do this e.g.
with 'echo 1 > update'. During the update the whole directory structure
is deleted and built up again.Cc: Pekka Enberg
Cc: Ingo Oeser
Cc: Joern Engel
Acked-by: Martin Schwidefsky
Signed-off-by: Michael Holzheu
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
