- 15 Jan, 2006 27 commits
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Paul Jackson authored
The problem, reported in: http://bugzilla.kernel.org/show_bug.cgi?id=5859 and by various other email messages and lkml posts is that the cpuset hook in the oom (out of memory) code can try to take a cpuset semaphore while holding the tasklist_lock (a spinlock). One must not sleep while holding a spinlock. The fix seems easy enough - move the cpuset semaphore region outside the tasklist_lock region. This required a few lines of mechanism to implement. The oom code where the locking needs to be changed does not have access to the cpuset locks, which are internal to kernel/cpuset.c only. So I provided a couple more cpuset interface routines, available to the rest of the kernel, which simple take and drop the lock needed here (cpusets callback_sem). 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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Heiko Carstens authored
The QUEUE_ORDERED_* numbers got renumbered and by accident the dasd driver was changed to use QUEUE_ORDERED_DRAIN instead of QUEUE_ORDERED_TAG. Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
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Cornelia Huck authored
Signed-off-by:
Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
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Cornelia Huck authored
The chps[] array in struct channel_subsystem is one too short; therefore the code doesn't realize the chpid ff is already known. When several devices on chpid ff become available, the message "new_channel_path: could not register ff" is displayed for every device but the first one. Signed-off-by:
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Martin Schwidefsky authored
finish_arch_switch needs to update the user cpu time as well, not just the system cpu time. Otherwise the partial user cpu time of a process that is stored in the lowcore will be (mis-)accounted to the next process. Signed-off-by:
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Martin Schwidefsky authored
Add the missing third argument to the blk_queue_ordered call and use the constant QUEUE_ORDERED_DRAIN instead of "1". Signed-off-by:
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Martin Schwidefsky authored
Define a dummy pm_power_off pointer to make sys_reboot happy. Signed-off-by:
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Martin Schwidefsky authored
Remove useless spin_retry_counter and fix compilation for UP kernels. Signed-off-by:
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Alexey Dobriyan authored
Add missing fourth argument to cpcmd calls under !CONFIG_SMP. Signed-off-by:
Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
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Martin Schwidefsky authored
Add an include of linux/compiler.h in sigcontext.h to avoid compiler errors in user space apps because of a missing definition for __user. Signed-off-by:
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Heiko Carstens authored
The show_task function walks the kernel stack backchain of processes assuming that the processes are not running. Since this assumption is not correct walking the backchain can lead to an addressing exception and therefore to a kernel hang. So prevent the kernel hang (you still get incorrect results) verity that all read accesses are within the bounds of the kernel stack before performing them. Signed-off-by:
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Jan Glauber authored
Fix processing of messages larger than 2 * SHA256_BLOCK_SIZE. Signed-off-by:
Jan Glauber <jan.glauber@de.ibm.com> Signed-off-by:
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Jan Glauber authored
Call KM[C] only with a multiple of block size. Check return value of KM[C] instructions and complain about erros Signed-off-by:
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Jan Glauber authored
Provide ECB and CBC encrypt / decrypt functions to crypto API to speed up our hardware accelerated DES implementation. This new functions allow the crypto API to call ECB / CBC directly with large blocks in difference to the old functions that were calles with algorithm block size (8 bytes for DES). This is up to factor 10 faster than our old hardware implementation :) Signed-off-by:
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Jan Glauber authored
Beautify the s390 in-kernel-crypto des code. Signed-off-by:
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Chuck Ebbert authored
Recent changes caused part of stack traces from SysRq-T to print at KERN_EMERG loglevel. Also, parts of stack dump during oops were failing to print at that level when they should. Signed-off-by:
Chuck Ebbert <76306.1226@compuserve.com> Signed-off-by:
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Randy Dunlap authored
Move the HOTPLUG_CPU option under "Processor type" instead of under "Bus options". This makes it the same for i386 as most other processor types (arm, ia64, parisc, ppc, s390, & x86_64; but not for powerpc). Besides, it takes me too long to find it under Bus options. I can't be the only person who has trouble finding it. Signed-off-by:
Randy Dunlap <rdunlap@xenotime.net> Signed-off-by:
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Kumar Gala authored
Add support for the PowerPC MPC83xx watchdog. The MPC83xx has a simple watchdog that once enabled it can not be stopped, has some simple timeout range selection, and the ability to either reset the processor or take a machine check. Signed-off-by:
Dave Updegraff <dave@cray.org> Signed-off-by:
Kumar Gala <galak@kernel.crashing.org> Cc: Wim Van Sebroeck <wim@iguana.be> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by:
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Robin Holt authored
Anything that writes into a tmpfs filesystem is liable to disproportionately decrease the available memory on a particular node. Since there's no telling what sort of application (e.g. dd/cp/cat) might be dropping large files there, this lets the admin choose the appropriate default behavior for their site's situation. Introduce a tmpfs mount option which allows specifying a memory policy and a second option to specify the nodelist for that policy. With the default policy, tmpfs will behave as it does today. This patch adds support for preferred, bind, and interleave policies. The default policy will cause pages to be added to tmpfs files on the node which is doing the writing. Some jobs expect a single process to create and manage the tmpfs files. This results in a node which has a significantly reduced number of free pages. With this patch, the administrator can specify the policy and nodes for that policy where they would prefer allocations. This patch was originally written by Brent Casavant and Hugh Dickins. I added support for the bind and preferred policies and the mpol_nodelist mount option. Signed-off-by:
Brent Casavant <bcasavan@sgi.com> Signed-off-by:
Hugh Dickins <hugh@veritas.com> Signed-off-by:
Robin Holt <holt@sgi.com> Signed-off-by:
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Christoph Lameter authored
Some people apparently run CONFIG_NUMA without CONFIG_SWAP. The migration code currently depends on swap. This patch provides a set of inline fallback functions so that the kernel properly compiles. However, calls to migration functions will fail. Signed-off-by:
Christoph Lameter <clameter@sgi.com> Signed-off-by:
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Calin A. Culianu authored
This is a 2.6 patch that adds support for the watchdog timer built into the EPX-C3 single board computer manufactured by Winsystems, Inc. Driver details: This is for x86 only. This watchdog is pretty basic and simple. It is only configurable via jumpers on the SBC, and it only has either a 1.5s or 200s interval. The watchdog can either be auto-configured to start as soon as the machine powers up (bad idea for the 1.5s interval!) or it can be enabled and disabled by writing to io port 0x1ee. Petting the watchdog involves writing any value to io port 0x1ef. The only unfortunate thing about this watchdog (and it is not at all uncommmon in watchdogs that linux supports) is that it is not a PCI or ISA-PNP device and as such it isn't at all probeable. Either the watchdog exists as 2 bytes at 0x1ee, or it doesn't. Thus, using this driver on a machine that doesn't have that watchdog can potentially hang/crash the system, etc. So only use this driver if you in fact are on a Winsystems EPX-C3 SBC. Anyway this driver fits into the already-existing watchdog framework quite nicely and I already tested it on my EPX-C3 and it works like a charm. Signed-off-by:
Calin A. Culianu <calin@ajvar.org> Signed-off-by:
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Miklos Szeredi authored
LD .tmp_vmlinux1 /usr/lib/gcc-lib/i486-linux/3.3.4/../../../libc.a(mktime.o): In function `timelocal': : multiple definition of `mktime' kernel/built-in.o:kernel/time.c:604: first defined here /usr/bin/ld: Warning: size of symbol `mktime' changed from 134 in kernel/built-in.o to 44 in /usr/lib/gcc-lib/i486-linux/3.3.4/../../../libc.a(mktime.o) collect2: ld returned 1 exit status Signed-off-by:
Miklos Szeredi <miklos@szeredi.hu> Cc: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by:
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Arjan van de Ven authored
Remove the "inline" keyword from a bunch of big functions in the kernel with the goal of shrinking it by 30kb to 40kb Signed-off-by:
Arjan van de Ven <arjan@infradead.org> Signed-off-by:
Ingo Molnar <mingo@elte.hu> Acked-by:
Jeff Garzik <jgarzik@pobox.com> Signed-off-by:
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Ingo Molnar authored
Add a new SCHED_BATCH (3) scheduling policy: such tasks are presumed CPU-intensive, and will acquire a constant +5 priority level penalty. Such policy is nice for workloads that are non-interactive, but which do not want to give up their nice levels. The policy is also useful for workloads that want a deterministic scheduling policy without interactivity causing extra preemptions (between that workload's tasks). Signed-off-by:
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Patrick Gefre authored
Add driver support for a 2 port PCI IOC3-based serial card on Altix boxes: This is a re-submission. On the original submission I was asked to organize the code so that the MIPS ioc3 ethernet and serial parts could be used with this driver. Stanislaw Skowronek was kind enough to provide the shim layer for this - thanks Stanislaw. This patch includes the shim layer and the Altix PCI ioc3 serial driver. The MIPS merged ioc3 ethernet and serial support is forthcoming. Signed-off-by:
Patrick Gefre <pfg@sgi.com> Signed-off-by:
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Neil Horman authored
A Christoph suggested that the /proc/devices file be converted to use the seq_file interface. This patch does that. I've obxerved one or two installation that had sufficiently large sans that they overran the 4k limit on /proc/devices. Signed-off-by:
Neil Horman <nhorman@redhat.com> Signed-off-by:
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Ian Kent authored
We forgot to initialise a couple of nameidata fields. Signed-off-by:
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- 14 Jan, 2006 13 commits
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Alexander Viro authored
Fixed the refcounting on failure exits in sys_mq_open() and cleaned the logics up. Rules are actually pretty simple - dentry_open() expects vfsmount and dentry to be pinned down and it either transfers them into created struct file or drops them. Old code had been very confused in that area - if dentry_open() had failed either in do_open() or do_create(), we ended up dentry and mqueue_mnt dropped twice, once by dentry_open() cleanup and then by sys_mq_open(). Fix consists of making the rules for do_create() and do_open() same as for dentry_open() and updating the sys_mq_open() accordingly; that actually leads to more straightforward code and less work on normal path. Signed-off-by:
Al Viro <aviro@redhat.com> Signed-off-by:
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Linus Torvalds authored
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Linus Torvalds authored
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Linus Torvalds authored
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Adrian Bunk authored
tmp_buf_sem sems to be a common name for something completely unused... Signed-off-by:
Adrian Bunk <bunk@stusta.de> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> ("usb portion") Signed-off-by:
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Xose Vazquez Perez authored
Based on comments from Randy Dunlap on my previous commit 5b0ed2c6Signed-off-by:
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Evgeniy authored
Here is update of ufs cleanup patch, brought on by the recently fixed ubh_get_usb_second() bug that made some ugly code rather painfully obvious. It also includes - fix compilation warnings which appears if debug mode turn on - remove unnecessary duplication of code to support UFS2 I tested it on ufs1 and ufs2 file-systems. Signed-off-by:
Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by:
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Linus Torvalds authored
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andrew.vasquez@qlogic.com authored
Signed-off-by:
Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by:
James Bottomley <James.Bottomley@SteelEye.com>
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andrew.vasquez@qlogic.com authored
Given the semantic changes in both the device-model and fc-transport APIs, the driver's handling of port-type RSCNs via a series of ADISCs and PLOGIs can cause series of badness ranging from unexpectedly device loss to devices not being discovered. In the interim, disable (via a module-parameter) this feature and allow RSCN management to continue to occur within the driver's DPC thread. Signed-off-by:
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andrew.vasquez@qlogic.com authored
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andrew.vasquez@qlogic.com authored
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