- 24 Mar, 2006 40 commits
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Paul Jackson authored
Replace pairs of calls to <atomic_inc, atomic_read>, with a single call atomic_inc_return, saving a few bytes of source and kernel text. Signed-off-by:
Paul Jackson <pj@sgi.com> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Paul Jackson authored
Since the test_bit() bit operator is boolean (return 0 or 1), the double not "!!" operations needed to convert a scalar (zero or not zero) to a boolean are not needed. Signed-off-by:
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Christoph Lameter authored
If we get under some memory pressure in a cpuset (we only scan zones that are in the cpuset for memory) then kswapd is woken up for all zones. This patch only wakes up kswapd in zones that are part of the current cpuset. Signed-off-by:
Christoph Lameter <clameter@sgi.com> Acked-by:
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Paul E. McKenney authored
A long-running rcutorture test can overflow dmesg, so that the line containing the module parameters is lost. Although it is usually possible to retrieve this information from the log files, it is much better to just tag it onto the final success/failure line so that it may be easily found. This patch does just that. Signed-off-by:
"Paul E. McKenney" <paulmck@us.ibm.com> Signed-off-by:
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Adrian Bunk authored
include/linux/platform.h contained nothing that was actually used except the default_idle() prototype, and is therefore removed by this patch. This patch does the following with the platform specific default_idle() functions on different architectures: - remove the unused function: - parisc - sparc64 - make the needlessly global function static: - arm - h8300 - m68k - m68knommu - s390 - v850 - x86_64 - add a prototype in asm/system.h: - cris - i386 - ia64 Signed-off-by:
Adrian Bunk <bunk@stusta.de> Acked-by:
Patrick Mochel <mochel@digitalimplant.org> Acked-by:
Kyle McMartin <kyle@parisc-linux.org> Signed-off-by:
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Alexey Dobriyan authored
Signed-off-by:
Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
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Alexey Dobriyan authored
Signed-off-by:
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Alexey Dobriyan authored
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Jan Beulich authored
With internal Xen-enabled kernels we see the kernel's static per-cpu data area exceed the limit of 32k on x86-64, and even native x86-64 kernels get fairly close to that limit. I generally question whether it is reasonable to have data structures several kb in size allocated as per-cpu data when the space there is rather limited. The biggest arch-independent consumer is tvec_bases (over 4k on 32-bit archs, over 8k on 64-bit ones), which now gets converted to use dynamically allocated memory instead. Signed-off-by:
Jan Beulich <jbeulich@novell.com> Signed-off-by:
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Adrian Bunk authored
Introduce a file fs/coda/coda_int.h with proper prototypes for some code. Signed-off-by:
Jan Harkes <jaharkes@cs.cmu.edu> Signed-off-by:
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Adrian Bunk authored
Add a proper prototype for ext2_get_parent(). Signed-off-by:
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Adrian Bunk authored
- mux.c: v9fs_poll_mux() was inline but not static resuling in needless object size bloat - mux.c: remove all "inline"s: gcc should know best what to inline - #if 0 the following unused global functions: - 9p.c: v9fs_v9fs_t_flush() - conv.c: v9fs_create_tauth() - mux.c: v9fs_mux_rpcnb() Signed-off-by: -
Oleg Nesterov authored
__rcu_process_callbacks() disables interrupts to protect itself from call_rcu() which adds new entries to ->nxtlist. However we can check "->nxtlist != NULL" with interrupts enabled, we can't get "false positives" because call_rcu() can only change this condition from 0 to 1. Tested with rcutorture.ko. Signed-off-by:
Oleg Nesterov <oleg@tv-sign.ru> Acked-by:
Dipankar Sarma <dipankar@in.ibm.com> Cc: "Paul E. McKenney" <paulmck@us.ibm.com> Signed-off-by:
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Bart Samwel authored
When (integer) sysctl values are in either seconds or centiseconds, but represented internally as jiffies, the allowable value range is decreased. This patch adds range checks to the conversion routines. For values in seconds: maximum LONG_MAX / HZ. For values in centiseconds: maximum (LONG_MAX / HZ) * USER_HZ. (BTW, does anyone else feel that an interface in seconds should not be accepting negative values?) Signed-off-by:
Bart Samwel <bart@samwel.tk> Signed-off-by:
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Bart Samwel authored
Make that the internal value for /proc/sys/vm/laptop_mode is stored as jiffies instead of seconds. Let the sysctl interface do the conversions, instead of doing on-the-fly conversions every time the value is used. Add a description of the fact that laptop_mode doubles as a flag and a timeout to the comment above the laptop_mode variable. Signed-off-by:
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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:
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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:
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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:
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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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