- 24 Mar, 2006 40 commits
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Bart Samwel authored
Make that the internal values for: /proc/sys/vm/dirty_writeback_centisecs /proc/sys/vm/dirty_expire_centisecs are stored as jiffies instead of centiseconds. Let the sysctl interface do the conversions with full precision using clock_t_to_jiffies, instead of doing overflow-sensitive on-the-fly conversions every time the values are used. Cons: apparent precision loss if HZ is not a multiple of 100, because of conversion back and forth. This is a common problem for all sysctl values that use proc_dointvec_userhz_jiffies. (There is only one other in-tree use, in net/core/neighbour.c.) Signed-off-by:
Bart Samwel <bart@samwel.tk> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Andrew Morton authored
Reduce lock hold times in free_uid(). Cc: Ingo Molnar <mingo@elte.hu> Cc: "Paul E. McKenney" <paulmck@us.ibm.com> Cc: David Howells <dhowells@redhat.com> Signed-off-by:
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Paul Jackson authored
Restructure the bitmap_*_region() operations, to avoid code duplication. Also reduces binary text size by about 100 bytes (ia64 arch). The original Bottomley bitmap_*_region patch added about 1000 bytes of compiled kernel text (ia64). The Mundt multiword extension added another 600 bytes, and this restructuring patch gets back about 100 bytes. But the real motivation was the reduced amount of duplicated code. Tested by Paul Mundt using <= BITS_PER_LONG as well as power of 2 aligned multiword spanning allocations. Signed-off-by:
Paul Mundt <lethal@linux-sh.org> Signed-off-by:
Paul Jackson <pj@sgi.com> Signed-off-by:
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Paul Mundt authored
Add support to the lib/bitmap.c bitmap_*_region() routines For bitmap regions larger than one word (nbits > BITS_PER_LONG). This removes a BUG_ON() in lib bitmap. I have an updated store queue API for SH that is currently using this with relative success, and at first glance, it seems like this could be useful for x86 (arch/i386/kernel/pci-dma.c) as well. Particularly for anything using dma_declare_coherent_memory() on large areas and that attempts to allocate large buffers from that space. Paul Jackson also did some cleanup to this patch. Signed-off-by:
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Paul Jackson authored
Paul Mundt <lethal@linux-sh.org> says: This patch set implements a number of patches to clean up and restructure the bitmap region code, in addition to extending the interface to support multiword spanning allocations. The current implementation (before this patch set) is limited by only being able to allocate pages <= BITS_PER_LONG, as noted by the strategically positioned BUG_ON() at lib/bitmap.c:752: /* We don't do regions of pages > BITS_PER_LONG. The * algorithm would be a simple look for multiple zeros in the * array, but there's no driver today that needs this. If you * trip this BUG(), you get to code it... */ BUG_ON(pages > BITS_PER_LONG); As I seem to have been the first person to trigger this, the result ends up being the following patch set with the help of Paul Jackson. The final patch in the series eliminates quite a bit of code duplication, so the bitmap code size ends up being smaller than the current implementation as an added bonus. After these are applied, it should already be possible to do multiword allocations with dma_alloc_coherent() out of ranges established by dma_declare_coherent_memory() on x86 without having to change any of the code, and the SH store queue API will follow up on this as the other user that needs support for this. This patch: Some code cleanup on the lib/bitmap.c bitmap_*_region() routines: * spacing * variable names * comments Has no change to code function. Signed-off-by: -
Adrian Bunk authored
This patch removes the documentation of the ISA legacy functions. Signed-off-by:
Adrian Bunk <bunk@stusta.de> Signed-off-by:
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Al Viro authored
unused isa_...() helpers removed. Adrian Bunk: The asm-sh part was rediffed due to unrelated changes. Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Al Viro authored
switch to ioremap() Signed-off-by:
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Al Viro authored
switch to ioremap() Adrian Bunk: The order of the hunks in the patch was slightly rearranged due to an unrelated change in the driver. Signed-off-by:
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Al Viro authored
switched to ioremap(), cleaned the probing up a bit. Signed-off-by:
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Al Viro authored
switched CONFIG_SCSI_G_NCR5380_MEM code in g_NCR5380 to ioremap(); massaged g_NCR5380.h accordingly. Signed-off-by:
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Al Viro authored
switch from isa_read...() to ioremap() and read...() Signed-off-by:
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Tobias Klauser authored
Use ARRAY_SIZE macro instead of sizeof(x)/sizeof(x[0]) and remove a duplicate of ARRAY_SIZE. Some trailing whitespaces are also deleted. Signed-off-by:
Tobias Klauser <tklauser@nuerscht.ch> Cc: David Howells <dhowells@redhat.com> Cc: Dave Kleikamp <shaggy@austin.ibm.com> Acked-by:
Trond Myklebust <trond.myklebust@fys.uio.no> Cc: Neil Brown <neilb@cse.unsw.edu.au> Cc: Chris Mason <mason@suse.com> Cc: Jeff Mahoney <jeffm@suse.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Nathan Scott <nathans@sgi.com> Signed-off-by:
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Bastian Blank authored
Cast the argument correctly. Cc: Christoph Hellwig <hch@lst.de> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
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Eric Sesterhenn authored
Convert all kmalloc + memset sequences in drivers/s390 to kzalloc usage. Signed-off-by:
Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
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Eric Sesterhenn authored
Convert all kmalloc + memset sequences in arch/s390 to kzalloc usage. Signed-off-by:
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Eric Rossman authored
Undetected edge case for CRT messages to CEX2A caused length to be too short, thus truncating the message. The solution was to check a different variable which actually determines which key type is being used. Increment version number in z90main.c to correct level of 1.3.3, fix copyright year and add comment about bitlength limit of CEX2A. Signed-off-by:
Eric Rossman <edrossma@us.ibm.com> Signed-off-by:
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Stefan Bader authored
Michael Holzheu <holzheu@de.ibm.com>, Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:Stefan Bader <shbader@de.ibm.com> Signed-off-by:
Michael Holzheu <holzheu@de.ibm.com> Signed-off-by:
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Michael Holzheu authored
If a tape device is assigned to another host, the interrupt for the assign operation comes back with deferred condition code 1. Under some conditions this can lead to an endless loop of retries. Check if the current request is still in IO in deferred condition code handling and prevent retries when the request has already been cancelled. Signed-off-by:
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Michael Holzheu authored
When a request is aborted because of a signal, we currently stop the request via csh, but we do not wait for the interrupt of csh in any case. We free the request structure and therefore when the interrupt for the csh operation is presented, the request object is no longer valid and an invalid callback pointer is used. To fix this wait until the interrupt for csh arrives and until wait_event_interruptible() does not return -ERESTARTSYS. Signed-off-by:
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Stefan Bader authored
If a deferred CC happens there will be lots of messages, because the retry is done immediatly in the interrupt handler which can be too fast. To avoid this requeue the request and schedule the queue to be processed. Signed-off-by:
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Stefan Weinhuber authored
The DASD extended error reporting is a facility that allows to get detailed information about certain problems in the DASD I/O. This information can be used to implement fail-over applications that can recover these problems. Signed-off-by:
Stefan Weinhuber <wein@de.ibm.com> Signed-off-by:
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Horst Hummel authored
Use kzalloc to get a zeroed buffer for the structure returned to user space by the BIODASDINFO2 ioctl. Not all fields are set up, e.g. the read_devno is missing. Signed-off-by:
Horst Hummel <horst.hummel@de.ibm.com> Signed-off-by:
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Peter Oberparleiter authored
The dasd diag discipline has been tested on 64 bit and is no longer experimental. Signed-off-by:
Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by:
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Horst Hummel authored
Remove obsolete history and trailing whitespace. Signed-off-by:
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Christoph Hellwig authored
Now that there are no more users of the awkward dynamic ioctl hack we can remove the code to support it. Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
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Christoph Hellwig authored
dasd_cmd just implements three ioctls which are wrappers around functionality in the core kernel or other modules. When merging those into dasd_mod they just add 22 lines of code which is far less than the amount of code removed in the last two patches, and which doesn't spill into another 4k pages when build modular, while removing a 128lines module. Signed-off-by:
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Christoph Hellwig authored
Add an ->ioctl method to the dasd_discipline structure. This allows to apply the same kind of cleanups the last patch applied to dasd_ioctl.c to dasd_eckd.c (the only dasd discipline with special ioctls) aswell. Again lots of code removed. During auditing the ioctls I found two fishy return value propagations from copy_{from,to}_user, maintainers please check those, I've marked them with XXX comments. Signed-off-by: -
Christoph Hellwig authored
Handle ioctls implemented in dasd_ioctl through the normal switch statement that most drivers use instead of the awkward dasd_ioctl_no_register routine. This avoids searching a linear list on every call to dasd_ioctl(), and allows to give the various ioctl implementation functions sane prototypes, aswell as moving the check for bdev->bd_disk->private_data from the individual functions to dasd_ioctl. (I think it can't actually every be NULL, but let's keep that for later) Signed-off-by:
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Martin Schwidefsky authored
Include connector config in the s390 arch Kconfig to get support for connectors. Signed-off-by:
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Michael Ryan authored
Retry starting of new cpu if sigp restart returns condition code 2 (busy). Signed-off-by:
Michael Ryan <ryan@funsoft.com> Signed-off-by:
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Martin Schwidefsky authored
Use __builtin_trap instead of an inline assembly in the BUG() macro. That way the compiler knows that BUG() won't return. Signed-off-by:
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Martin Schwidefsky authored
Set permissoin of /proc/sys/vm/cmm_* files to 0644. Signed-off-by:
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Heiko Carstens authored
Use common code parser for early parameters instead of our own. Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
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Cornelia Huck authored
Gather extended measurements for channel paths from the channel subsystem and expose them to userspace via a sysfs attribute. Signed-off-by:
Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by:
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Cornelia Huck authored
Update documentation of the common I/O layer: - Add MSS-specific example. - Add more information on ccwgroup devices. - Add channel path type attribute. - Fix typo. Signed-off-by:
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Cornelia Huck authored
When cio waits for the interrupt for a basic sense, interrupts for hsch() or csch() issued in the meantime are wrongly counted as interrupts for the basic sense and the accumulated irb is passed to the device driver. In ccw_device_w4sense(), check for clear or halt function in the irb and pass the irb for the csch() or hsch() to the device driver. Signed-off-by:
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Akinobu Mita authored
While working on these patch set, I found several possible cleanup on x86-64 and ia64. akpm: I stole this from Andi's queue. Not only does it clean up bitops. It also unrelatedly changes the prototype of pci_mmcfg_init() and removes its arch_initcall(). It seems that the wrong two patches got joined together, but this is the one which has been tested. This patch fixes the current x86_64 build error (the pci_mmcfg_init() declaration in arch/i386/pci/pci.h disagrees with the definition in arch/x86_64/pci/mmconfig.c) This also means that x86_64's pci_mmcfg_init() gets called in the same (new) manner as x86's: from arch/i386/pci/init.c:pci_access_init(), rather than via initcall. The bitops cleanups came along for free. All this worked OK in -mm testing (since 2.6.16-rc4-mm1) because x86_64 was tested with both patches applied. Signed-off-by:
Akinobu Mita <mita@miraclelinux.com> Signed-off-by:
Andi Kleen <ak@suse.de> Cc: Con Kolivas <kernel@kolivas.org> Cc: Jean Delvare <khali@linux-fr.org> Signed-off-by:
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Theodore Ts'o authored
The meaning of MS_VERBOSE is backwards; if the bit is set, it really means, "don't be verbose". This is confusing and counter-intuitive. In addition, there is also no way to set the MS_VERBOSE flag in the mount(8) program in util-linux, but interesting, it does define options which would do the right thing if MS_SILENT were defined, which unfortunately we do not: #ifdef MS_SILENT { "quiet", 0, 0, MS_SILENT }, /* be quiet */ { "loud", 0, 1, MS_SILENT }, /* print out messages. */ #endif So the obvious fix is to deprecate the use of MS_VERBOSE and replace it with MS_SILENT. Signed-off-by:"Theodore Ts'o" <tytso@mit.edu> Signed-off-by:
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Arnd Bergmann authored
All architecture independent system calls should be declared in syscalls.h, add the one that is missing. Signed-off-by:
Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by:
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