summaryrefslogtreecommitdiff
AgeCommit message (Collapse)AuthorFilesLines
2006-09-21[CIFS] New POSIX locking code not setting rc properly to zero on successfulSteve French1-1/+2
unlock in case where server does not support POSIX locks and nobrl is not specified. Signed-off-by: Steve French <sfrench@us.ibm.com>
2006-09-21[CIFS] Support deep tree mounts (e.g. mounts to //server/share/path)Steve French7-11/+74
Samba bugzilla #4040 Signed-off-by: Steve French <sfrench@us.ibm.com>
2006-09-06[CIFS] Fix CIFS readdir access denied when SE Linux enabledSteve French1-4/+7
CIFS had one path in which dentry was instantiated before the corresponding inode metadata was filled in. Fixes Redhat bugzilla bug #163493 Signed-off-by: Steve French <sfrench@us.ibm.com> Acked-by: Eric Paris <eparis@redhat.com> Acked-by: Dave Kleikamp <shaggy@austin.ibm.com>
2006-09-06Merge branch 'upstream-linus' of ↵Linus Torvalds1-1/+1
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: [PATCH] myri10ge: update the firmware download URL in Kconfig
2006-09-06[PATCH] FRV: Use the generic time stuff for FRVjohn stultz2-81/+4
Use the generic time stuff for FRV. Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-06[PATCH] Remove unneeded asm-i386/cpufeature.h from user visibility.David Woodhouse1-1/+1
Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-06[PATCH] Move linux/device.h include in linux/atmdev.h to #ifdef __KERNEL__ ↵Ismail Donmez1-1/+1
section linux/device.h header is not included in the David Woodhouse's kernel-headers git tree which is used for userspace kernel headers. Which results in compile errors when building iproute2. Attached patch moves linux/device.h include under the #ifdef __KERNEL__ section. Signed-off-by: Ismail Donmez <ismail@pardus.org.tr> Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-06[PATCH] lockdep: do not touch console state when tainting the kernelIngo Molnar1-1/+1
Remove an unintended console_verbose() side-effect from add_taint(). Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-06[PATCH] prevent swsusp with PAEPavel Machek1-1/+5
PAE + swsusp results in hard-to-debug crash about 50% of time during resume. Cause is known, fix needs to be ported from x86-64 (but we can't make it to 2.6.18, and I'd like this to be worked around in 2.6.18). Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-06[PATCH] prevent timespec/timeval to ktime_t overflowThomas Gleixner1-1/+6
Frank v. Waveren pointed out that on 64bit machines the timespec to ktime_t conversion might overflow. This is also true for timeval to ktime_t conversions. This breaks a "sleep inf" on 64bit machines. While a timespec/timeval with tx.sec = MAX_LONG is valid by specification the internal representation of ktime_t is based on nanoseconds. The conversion of seconds to nanoseconds overflows for seconds values >= (MAX_LONG / NSEC_PER_SEC). Check the seconds argument to the conversion and limit it to the maximum time which can be represented by ktime_t. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Frank v Waveren <fvw@var.cx> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-06[PATCH] add missing desctiption in super.cHenrik Kretzschmar1-0/+1
Adds kernel-doc for alloc_super() type in fs/super.c. Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-06[PATCH] Documentation for lock_key in struct hrtimer_baseHenrik Kretzschmar1-0/+1
Fixes an error message on make xmldocs. Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-06[PATCH] lockdep ifdef fixJarek Poplawski1-1/+1
With CONFIG_SMP=y CONFIG_PREEMPT=y CONFIG_LOCKDEP=y CONFIG_DEBUG_LOCK_ALLOC=y # CONFIG_PROVE_LOCKING is not set spin_unlock_irqrestore() goes through lockdep but spin_lock_irqsave() doesn't. Apparently, bad things happen. Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-06[PATCH] myri10ge: update the firmware download URL in KconfigBrice Goglin1-1/+1
Update the firmware download URL in Kconfig to match the header in drivers/net/myri10ge/myri10ge.c. Signed-off-by: Brice Goglin <brice@myri.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-03Linux 2.6.18-rc6Linus Torvalds1-1/+1
2006-09-03[PATCH] powerpc: Fix typo in powermac platform functionsBenjamin Herrenschmidt1-1/+1
New sparse caught that typo which could have caused erratic hardware behaviour on some machines if the platform functions are used by the firmware to change bits in some FCR registers. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-02Merge master.kernel.org:/home/rmk/linux-2.6-serialLinus Torvalds2-9/+11
* master.kernel.org:/home/rmk/linux-2.6-serial: [SERIAL] 8250: constify some serial structs [SERIAL] Make uart_match_port() work with all memory mapped UARTs
2006-09-02Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds10-167/+228
* master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 3762/1: Fix ptrace cache coherency bug for ARM1136 VIPT nonaliasing Harvard caches [ARM] 3765/1: S3C24XX: cleanup include/asm-arm/arch-s3c2410/dma.h [ARM] 3764/1: S3C24XX: change type naming to kernel style [ARM] 3763/1: add both rtcs to csb337 defconfig [ARM] Fix ARM __raw_read_trylock() implementation [ARM] 3750/3: Fix double VFP emulation for EABI kernels
2006-09-02[PATCH] eligible_child: remove an obsolete ->tgid checkOleg Nesterov1-1/+1
It is not possible to find a sub-thread in ->children/->ptrace_children lists, ptrace_attach() does not allow to attach to sub-threads. Even if it was possible to ptrace the task from the same thread group, we can't allow to release ->group_leader while there are others (ptracer) threads in the same group. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-02[ARM] 3762/1: Fix ptrace cache coherency bug for ARM1136 VIPT nonaliasing ↵George G. Davis2-3/+41
Harvard caches Patch from George G. Davis Resolve ARM1136 VIPT non-aliasing cache coherency issues observed when using ptrace to set breakpoints and cleanup copy_{to,from}_user_page() while we're here as requested by Russell King because "it's also far too heavy on non-v6 CPUs". NOTES: 1. Only access_process_vm() calls copy_{to,from}_user_page(). 2. access_process_vm() calls get_user_pages() to pin down the "page". 3. get_user_pages() calls flush_dcache_page(page) which ensures cache coherency between kernel and userspace mappings of "page". However flush_dcache_page(page) may not invalidate I-Cache over this range for all cases, specifically, I-Cache is not invalidated for the VIPT non-aliasing case. So memory is consistent between kernel and user space mappings of "page" but I-Cache may still be hot over this range. IOW, we don't have to worry about flush_cache_page() before memcpy(). 4. Now, for the copy_to_user_page() case, after memcpy(), we must flush the caches so memory is consistent with kernel cache entries and invalidate the I-Cache if this mm region is executable. We don't need to do anything after memcpy() for the copy_from_user_page() case since kernel cache entries will be invalidated via the same process above if we access "page" again. The flush_ptrace_access() function (borrowed from SPARC64 implementation) is added to handle cache flushing after memcpy() for the copy_to_user_page() case. Signed-off-by: George G. Davis <gdavis@mvista.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-01Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6Linus Torvalds8-79/+149
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6: uhci-hcd: fix list access bug USB: Support for ELECOM LD-USB20 in pegasus USB: Add VIA quirk fixup for VT8235 usb2 USB: rtl8150_disconnect() needs tasklet_kill() USB Storage: unusual_devs.h for Sony Ericsson M600i USB Storage: Remove the finecam3 unusual_devs entry UHCI: don't stop at an Iso error usb gadget: g_ether spinlock recursion fix USB: add all wacom device to hid-core.c blacklist hid-core.c: Adds all GTCO CalComp Digitizers and InterWrite School Products to blacklist USB floppy drive SAMSUNG SFD-321U/EP detected 8 times
2006-09-01[PATCH] backlight last round of fixesBenjamin Herrenschmidt6-39/+44
Fix some more problems (inverted use of semaphores in some places). He also moved my checks into within the protected section which is better. Signed-off-by: Michael Hanselmann <linux-kernel@hansmi.ch> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01[PATCH] manage-jbd-its-own-slab fixBadari Pulavarty1-1/+1
Missed a place where I forgot to convert kfree() to kmem_cache_free() as part of jbd-manage-its-own-slab changes. Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01[PATCH] fix NUMA interleaving for huge pagesNishanth Aravamudan1-1/+9
Since vma->vm_pgoff is in units of smallpages, VMAs for huge pages have the lower HPAGE_SHIFT - PAGE_SHIFT bits always cleared, which results in badd offsets to the interleave functions. Take this difference from small pages into account when calculating the offset. This does add a 0-bit shift into the small-page path (via alloc_page_vma()), but I think that is negligible. Also add a BUG_ON to prevent the offset from growing due to a negative right-shift, which probably shouldn't be allowed anyways. Tested on an 8-memory node ppc64 NUMA box and got the interleaving I expected. Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Signed-off-by: Adam Litke <agl@us.ibm.com> Cc: Andi Kleen <ak@muc.de> Acked-by: Christoph Lameter <clameter@engr.sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01[PATCH] sgiioc4: fixup use of mmio opsJohn Keller1-18/+42
Fix some bugs in the patch that converted the IOC4 driver from port IO ops to memio ops. http://marc.theaimsgroup.com/?l=linux-ide&m=114895892231438&w=2 Problems fixed are: - Call to default_hwif_mmiops() was not being done until _after_ first IO operation, resulting in the first IO operation being done as a port IO op, instead of memio. - request_region() calls needed to be request_mem_region() - Incomplete error case handling. - Non-usage of ioremap() and __iomem. Signed-off-by: John Keller <jpk@sgi.com> Signed-off-by: Jeremy Higdon <jeremy@sgi.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01[PATCH] ALSA: ac97: correct some Mic mixer elementsTakashi Iwai1-2/+2
Revert the mixer element names of some Mic controls to the state of 2.6.17. This should fix the name mismatch in alsactl. Signed-off-by: Takashi Iwai <tiwai@suse.de> Cc: Jaroslav Kysela <perex@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01[PATCH] powerpc: Fix PowerMac IRQ handling bugBenjamin Herrenschmidt1-3/+3
The port to genirq & the new powerpc interrupt model in 2.6.18 introduced a bug in the legacy PowerMac PIC code (used on older machines) because of a typo potentially causing hangs due to interrupt storms. This fixes it, along with a performance issue causing us to do spurrious retriggers after masking an interrupt. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01[PATCH] powerpc: More via-pmu backlight fixesBenjamin Herrenschmidt2-50/+57
The via-pmu backlight code (introduced in 2.6.18) has various design issues causing crashes on machines using it like the old Wallstreet powerbook (Michael, the author, never managed to test on these and I just got my hand on one of those old beasts). This fixes them by no longer trying to hijack the backlight device of the frontmost framebuffer (causing that framebuffer to crash) but having it's own local bits instead. Might look weird but it's better that way on those old machines, at least as a last-minute fix for 2.6.18. We might rework the whole thing later. This patch also changes the way it gets notified of sleep and wakeup in order to properly shut the backlight down on sleep and bring it back on wakeup. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01[PATCH] dm: work around mempool_alloc, bio_alloc_bioset deadlocksPavel Mironchik1-2/+7
This patch works around a complex dm-related deadlock/livelock down in the mempool allocator. Alasdair said: Several dm targets suffer from this. Mempools are not yet used correctly everywhere in device-mapper: they can get shared when devices are stacked, and some targets share them across multiple instances. I made fixing this one of the prerequisites for this patch: md-dm-reduce-stack-usage-with-stacked-block-devices.patch which in some cases makes people more likely to hit the problem. There's been some progress on this recently with (unfinished) dm-crypt patches at: http://www.kernel.org/pub/linux/kernel/people/agk/patches/2.6/editing/ (dm-crypt-move-io-to-workqueue.patch plus dependencies) and: I've no problems with a temporary workaround like that, but Milan Broz (a new Redhat developer in the Czech Republic) has started reviewing all the mempool usage in device-mapper so I'm expecting we'll soon have a proper fix for this associated problems. [He's back from holiday at the start of next week.] For now, this sad-but-safe little patch will allow the machine to recover. [akpm@osdl.org: rewrote changelog] Cc: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01[PATCH] schedule obsolete OSS drivers for removal, 2nd roundAdrian Bunk2-8/+29
This patch schedules obsolete OSS drivers (with ALSA drivers that support the same hardware) for removal. A rationale of the patch is in http://lkml.org/lkml/2006/7/11/186 Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01[PATCH] IPMI: fix occasional oops on module unloadCorey Minyard1-0/+1
Olaf Kirch of SuSE tracked down a problem where module unloads of the IPMI driver would occasionally result in Oopses. He tracked that down to a variable that wasn't always initialized properly in some situations. This patch initializes that variable. Olaf sent a patch that kzalloc-ed the data, but this structure is large enough that I would perfer to not do that. Thanks Olaf! Signed-off-by: Corey Minyard <minyard@acm.org> Cc: Olaf Kirch <okir@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01[PATCH] kerneldoc for handle_bad_irq()Henrik Kretzschmar1-0/+5
Adds the description of the parameters from handle_bad_irq(). Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01[PATCH] SBC8360: module_param() permission fixesIan E. Morgan1-2/+2
The last argument of module_param is permissions, not default value. Acked-by: Wim Van Sebroeck <wim@iguana.be> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01[PATCH] exit early in floppy_init when no floppy existsOlaf Hering1-7/+5
modprobe -v floppy on a Apple G5 writes incorrect stuff to dmesg: Floppy drive(s): fd0 is 2.88M The reason is that the legacy io check happens very late, when part of the floppy stuff is already initialized. check_legacy_ioport() returns either -ENODEV right away, or it walks the device-tree looking for a floppy node. Signed-off-by: Olaf Hering <olaf@aepfle.de> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01[PATCH] x86: increase MAX_MP_BUSSES on default archAndrew Morton1-0/+4
Vitezslav Samel <samel@mail.cz> reports that an HP DL380 g4 fails using the default arch due to the ISA bus having an ID of 32. It would have worked OK with the generic arch - for some reason the default arch doesn't support as many busses. So bump that up to support 256 busses, but leave it at 32 if we're building a tiny system to save a bit of memory. Cc: Vitezslav Samel <samel@mail.cz> Acked-by: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01[PATCH] xtensa: ptrace: EXIT_ZOMBIE fixBill Huey (hui1-1/+1
We're testing the wrong task_struct field. Acked-by: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01[PATCH] task delay accounting fixesShailabh Nagar5-23/+11
Cleanup allocation and freeing of tsk->delays used by delay accounting. This solves two problems reported for delay accounting: 1. oops in __delayacct_blkio_ticks http://www.uwsg.indiana.edu/hypermail/linux/kernel/0608.2/1844.html Currently tsk->delays is getting freed too early in task exit which can cause a NULL tsk->delays to get accessed via reading of /proc/<tgid>/stats. The patch fixes this problem by freeing tsk->delays closer to when task_struct itself is freed up. As a result, it also eliminates the use of tsk->delays_lock which was only being used (inadequately) to safeguard access to tsk->delays while a task was exiting. 2. Possible memory leak in kernel/delayacct.c http://www.uwsg.indiana.edu/hypermail/linux/kernel/0608.2/1389.html The patch cleans up tsk->delays allocations after a bad fork which was missing earlier. The patch has been tested to fix the problems listed above and stress tested with rapid calls to delay accounting's taskstats command interface (which is the other path that can access the same data, besides the /proc interface causing the oops above). Signed-off-by: Shailabh Nagar <nagar@watson.ibm.com> Cc: Balbir Singh <balbir@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01[PATCH] Fix faulty HPET clocksource usage (fix for bug #7062)john stultz1-1/+1
Apparently some systems export valid HPET addresses, but hpet_enable() fails. Then when the HPET clocksource starts up, it only checks for a valid HPET address, and the result is a system where time does not advance. See http://bugme.osdl.org/show_bug.cgi?id=7062 for details. This patch just makes sure we better check that the HPET is functional before registering the HPET clocksource. Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01[PATCH] synclink_gt: fix receive tty error handlingPaul Fulghum1-7/+7
Fix receive tty error handling in synclink_gt driver. Adrian reported compiler warning for incorrect bit test against char variable. I determined these and other device specific error bits were incorrectly defined. Signed-off-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01[PATCH] md: Fix issues with referencing rdev in md/raid1NeilBrown1-22/+35
We need to be careful when referencing mirrors[i].rdev. It can disappear under us at various times. So: fix a couple of problem places. comment a couple of non-problem places move an 'atomic_add' which deferences rdev down a little way to some where where it is sure to not be NULL. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01[PATCH] ZVC: Scale thresholds depending on the size of the systemChristoph Lameter2-20/+120
The ZVC counter update threshold is currently set to a fixed value of 32. This patch sets up the threshold depending on the number of processors and the sizes of the zones in the system. With the current threshold of 32, I was able to observe slight contention when more than 130-140 processors concurrently updated the counters. The contention vanished when I either increased the threshold to 64 or used Andrew's idea of overstepping the interval (see ZVC overstep patch). However, we saw contention again at 220-230 processors. So we need higher values for larger systems. But the current default is already a bit of an overkill for smaller systems. Some systems have tiny zones where precision matters. For example i386 and x86_64 have 16M DMA zones and either 900M ZONE_NORMAL or ZONE_DMA32. These are even present on SMP and NUMA systems. The patch here sets up a threshold based on the number of processors in the system and the size of the zone that these counters are used for. The threshold should grow logarithmically, so we use fls() as an easy approximation. Results of tests on a system with 1024 processors (4TB RAM) The following output is from a test allocating 1GB of memory concurrently on each processor (Forking the process. So contention on mmap_sem and the pte locks is not a factor): X MIN TYPE: CPUS WALL WALL SYS USER TOTCPU fork 1 0.552 0.552 0.540 0.012 0.552 fork 4 0.552 0.548 2.164 0.036 2.200 fork 16 0.564 0.548 8.812 0.164 8.976 fork 128 0.580 0.572 72.204 1.208 73.412 fork 256 1.300 0.660 310.400 2.160 312.560 fork 512 3.512 0.696 1526.836 4.816 1531.652 fork 1020 20.024 0.700 17243.176 6.688 17249.863 So a threshold of 32 is fine up to 128 processors. At 256 processors contention becomes a factor. Overstepping the counter (earlier patch) improves the numbers a bit: fork 4 0.552 0.548 2.164 0.040 2.204 fork 16 0.552 0.548 8.640 0.148 8.788 fork 128 0.556 0.548 69.676 0.956 70.632 fork 256 0.876 0.636 212.468 2.108 214.576 fork 512 2.276 0.672 997.324 4.260 1001.584 fork 1020 13.564 0.680 11586.436 6.088 11592.523 Still contention at 512 and 1020. Contention at 1020 is down by a third. 256 still has a slight bit of contention. After this patch the counter threshold will be set to 125 which reduces contention significantly: fork 128 0.560 0.548 69.776 0.932 70.708 fork 256 0.636 0.556 143.460 2.036 145.496 fork 512 0.640 0.548 284.244 4.236 288.480 fork 1020 1.500 0.588 1326.152 8.892 1335.044 [akpm@osdl.org: !SMP build fix] Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01[PATCH] ZVC: Overstep countersChristoph Lameter1-15/+5
Increments and decrements are usually grouped rather than mixed. We can optimize the inc and dec functions for that case. Increment and decrement the counters by 50% more than the threshold in those cases and set the differential accordingly. This decreases the need to update the atomic counters. The idea came originally from Andrew Morton. The overstepping alone was sufficient to address the contention issue found when updating the global and the per zone counters from 160 processors. Also remove some code in dec_zone_page_state. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-31Merge branch 'for-linus' of ↵Linus Torvalds1-4/+11
git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: IB/mthca: Use IRQ safe locks to protect allocation bitmaps
2006-08-31uhci-hcd: fix list access bugAlan Stern1-1/+1
When skipping to the last TD of an URB, go to the _last_ entry in the list instead of the _first_ entry (as780). This fixes Bugzilla #6747 and possibly others. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-31USB: Support for ELECOM LD-USB20 in pegasusNobuhiro Iwamatsu1-0/+3
This patch is support LD-USB20 of the USB LAN device. http://www2.elecom.co.jp/products/LD-USB20.html ( Japanese only ) I am using this device. And, I confirmed work by using this patch. Signed-off-by: Nobuhiro Iwamatsu <hemamu@t-base.ne.jp> Acked-by: Petko Manolov <petkan@nucleusys.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-31USB: Add VIA quirk fixup for VT8235 usb2Mark Hindley2-0/+2
Patch to add VIA PCI quirk for Enhanced/Extended USB on VT8235 southbridge. It is needed in order to use EHCI/USB 2.0 with ACPI. Without it IRQs are not routed correctly, you get an "Unlink after no-IRQ?" error and the device is unusable. I belive this could also be a fix for Bugzilla Bug 5835. Signed-off-by: Mark Hindley <mark@hindley.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-31USB: rtl8150_disconnect() needs tasklet_kill()Andrew Morton1-0/+1
We need to wait until any currently-running handler has completed. Fixes an unplug-time oops reported by "Miles Lane" <miles.lane@gmail.com>. Cc: "Petko Manolov" <petkan@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-31USB Storage: unusual_devs.h for Sony Ericsson M600iPhil Dibowitz1-0/+7
This entry was sent in by Emmanuel Vasilakis <evas@forthnet.gr>, turned into a patch by yours truly. Signed-off-by: Phil Dibowitz <phil@ipom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-31USB Storage: Remove the finecam3 unusual_devs entryPhil Dibowitz1-10/+0
This patch removes the Kyocera Finecam L3 entry in unusual devices originally submitted by Michael Krauth <michael.krauth@web.de> and Alessandro Fracchetti <al.fracchetti@tin.it> given that Gerriet <ger.haw@gmx.de> finds he doesn't need it and Alessandro confirms it isn't needed anymore as well. Signed-off-by: Phil Dibowitz <phil@ipom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-31UHCI: don't stop at an Iso errorAlan Stern1-1/+1
Unlike other sorts of endpoint queues, Isochronous queues don't stop when an error is encountered. This patch (as772) fixes the scanning routine in uhci-hcd, to make it keep on going when it finds an Iso error. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 19:56:47 +0000