- Feb 05, 2009
-
-
Suresh Siddha authored
Christian Borntraeger reports: > After a logical cpu offline, even on a complete idle system, there > is one cpu with full ticks. It turns out that nohz.cpu_mask has the > the offlined cpu still set. > > In select_nohz_load_balancer() we check if the system is completely > idle to turn of load balancing. We compare cpu_online_map with > nohz.cpu_mask. Since cpu_online_map is updated on cpu unplug, > but nohz.cpu_mask is not, the check fails and the scheduler believes > that we need an "idle load balancer" even on a fully idle system. > Since the ilb cpu does not deactivate the timer tick this breaks NOHZ. Fix the select_nohz_load_balancer() to not set the nohz.cpu_mask while a cpu is going offline. Reported-by:
Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by:
Suresh Siddha <suresh.b.siddha@intel.com> Tested-by:
Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
-
- Feb 03, 2009
-
-
Randy Dunlap authored
Add kernel-doc notation for @lock: include/linux/sched.h:457: No description found for parameter 'lock' Signed-off-by:
Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
-
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: PCI hotplug: Change link order of pciehp & acpiphp PCI hotplug: fakephp: Allocate PCI resources before adding the device PCI MSI: Fix undefined shift by 32 PCI PM: Do not wait for buses in B2 or B3 during resume PCI PM: Power up devices before restoring their state PCI PM: Fix hibernation breakage on EeePC 701 PCI: irq and pci_ids patch for Intel Tigerpoint DeviceIDs PCI PM: Fix suspend error paths and testing facility breakage
-
git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6: slub: fix per cpu kmem_cache_cpu array memory leak kmalloc: return NULL instead of link failure
-
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpcLinus Torvalds authored
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: fbdev/atyfb: Fix DSP config on some PowerMacs & PowerBooks powerpc: Fix oops on some machines due to incorrect pr_debug() powerpc/ps3: Printing fixups for l64 to ll64 convserion drivers/net powerpc/5200: update device tree binding documentation powerpc/5200: Bugfix for PCI mapping of memory and IMMR powerpc/5200: update defconfigs
-
Linus Torvalds authored
Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched_rt: don't use first_cpu on cpumask created with cpumask_and sched: fix buddie group latency sched: clear buddies more aggressively sched: symmetric sync vs avg_overlap sched: fix sync wakeups cpuset: fix possible deadlock in async_rebuild_sched_domains
-
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6Linus Torvalds authored
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (45 commits) V4L/DVB (10411): s5h1409: Perform s5h1409 soft reset after tuning V4L/DVB (10403): saa7134-alsa: saa7130 doesn't support digital audio V4L/DVB (10229): ivtv: fix memory leak V4L/DVB (10385): gspca - main: Fix memory leak when USB disconnection while streaming. V4L/DVB (10325): em28xx: Fix for fail to submit URB with IRQs and Pre-emption Disabled V4L/DVB (10317): radio-mr800: fix radio->muted and radio->stereo V4L/DVB (10314): cx25840: ignore TUNER_SET_CONFIG in the command callback. V4L/DVB (10288): af9015: bug fix: stick does not work always when plugged V4L/DVB (10287): af9015: fix second FE V4L/DVB (10270): saa7146: fix unbalanced mutex_lock/unlock V4L/DVB (10265): budget.c driver: Kernel oops: "BUG: unable to handle kernel paging request at ffffffff V4L/DVB (10261): em28xx: fix kernel panic on audio shutdown V4L/DVB (10257): em28xx: Fix for KWorld 330U Board V4L/DVB (10256): em28xx: Fix for KWorld 330U AC97 V4L/DVB (10254): em28xx: Fix audio URB transfer buffer race condition V4L/DVB (10250): cx25840: fix regression: fw not loaded on first use V4L/DVB (10248): v4l-dvb: fix a bunch of compile warnings. V4L/DVB (10243): em28xx: fix compile warning V4L/DVB (10240): Fix obvious swapped names in v4l2_subdev logic V4L/DVB (10233): [PATCH] Terratec Cinergy DT XS Diversity new USB ID (0ccd:0081) ...
-
git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmcLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc: pxamci: enable DMA for write ops after CMD/RESP pxamci: replace #ifdef CONFIG_PXA27x with if (cpu_is_pxa27x()) ricoh_mmc: Use suspend_late/resume_early mmci: Add support for ST Micro derivate mmc: Add a MX2/MX3 specific SDHC driver
-
git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: icside: fix PCB version 6 support (v2) tx4939ide: typo fix and minor cleanup ide: add CS5536 host driver (v3) ide: Force VIA IDE legacy interrupts for AmigaOne boards IDE: Unregister and disable devices if initialization fails. ide: fix ide_register_port() failure handling ide: struct device - replace bus_id with dev_name(), dev_set_name() ide-cd: fix DMA for non bio-backed requests
-
git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwbLinus Torvalds authored
* 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb: uwb: lock rc->rsvs_lock with spin_lock_bh() wusb: timeout when waiting for ASL/PZL updates in whci-hcd uwb: remove unused #include <version.h>'s wusb: return -ENOTCONN when resetting a port with no connected device uwb: safely remove all reservations
-
git://git.kernel.dk/linux-2.6-blockLinus Torvalds authored
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: add text file detailing queue/ sysfs files bio.h: If they MUST be inlined, then use __always_inline Fix misleading comment in bio.h block: fix inconsistent parenthesisation of QUEUE_FLAG_DEFAULT block: fix oops in blk_queue_io_stat()
-
Mark McLoughlin authored
The host really shouldn't be notifying us of config changes before the device status is VIRTIO_CONFIG_S_DRIVER or VIRTIO_CONFIG_S_DRIVER_OK. However, if we do happen to be interrupted while we're not attached to a driver, we really shouldn't oops. Prevent this simply by checking that device->driver is non-NULL before trying to notify the driver of config changes. Problem observed by doing a "set_link virtio.0 down" with QEMU before the net driver had been loaded. Signed-off-by:
Mark McLoughlin <markmc@redhat.com> Signed-off-by:
Rusty Russell <rusty@rustcorp.com.au> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
-
Eric Dumazet authored
Current refcounting for modules (done if CONFIG_MODULE_UNLOAD=y) is using a lot of memory. Each 'struct module' contains an [NR_CPUS] array of full cache lines. This patch uses existing infrastructure (percpu_modalloc() & percpu_modfree()) to allocate percpu space for the refcount storage. Instead of wasting NR_CPUS*128 bytes (on i386), we now use nr_cpu_ids*sizeof(local_t) bytes. On a typical distro, where NR_CPUS=8, shiping 2000 modules, we reduce size of module files by about 2 Mbytes. (1Kb per module) Instead of having all refcounters in the same memory node - with TLB misses because of vmalloc() - this new implementation permits to have better NUMA properties, since each CPU will use storage on its preferred node, thanks to percpu storage. Signed-off-by:
Eric Dumazet <dada1@cosmosbay.com> Signed-off-by:
Rusty Russell <rusty@rustcorp.com.au> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
-
Cliff Brake authored
With the PXA270 MMC hardware, there seems to be an issue of data corruption on writes where a 4KB data block is offset by one byte. If we delay enabling the DMA for writes until after the CMD/RESP has finished, the problem seems to be fixed. related to PXA270 Erratum #91 Tested-by:
Vernon Sauder <VernonInHand@gmail.com> Signed-off-by:
Cliff Brake <cbrake@bec-systems.com> Acked-by:
Eric Miao <eric.miao@marvell.com> Signed-off-by:
Pierre Ossman <drzeus@drzeus.cx>
-
Cliff Brake authored
Signed-off-by:
Cliff Brake <cbrake@bec-systems.com> Acked-by:
Eric Miao <eric.miao@marvell.com> Signed-off-by:
Pierre Ossman <drzeus@drzeus.cx>
-
philipl@overt.org authored
If ricoh_mmc suspends before sdhci_pci, it will pull the card out from under the controller, which could leave the system in a very confused state. Using suspend_late/resume_early ensures that sdhci_pci suspends first and resumes second. Signed-off-by:
Philip Langdale <philipl@overt.org> Signed-off-by:
Pierre Ossman <drzeus@drzeus.cx>
-
Linus Walleij authored
This patch adds support for the ST Microelectronics version of the PL180 PrimeCell. They use designer ID 0x80 and have a few alterations/bugfixes related to open drain and HW flow control. They also add some SDIO registers, I am unsure if these are in ST HW only or if this is things also added in later ARM revisions, but they are included in the mmci.h file for completeness. Signed-off-by:
Linus Walleij <linus.walleij@ericsson.com> Signed-off-by:
Pierre Ossman <drzeus@drzeus.cx>
-
Sascha Hauer authored
This patch adds a MX2/MX3 specific SDHC driver. The hardware is basically the same as in the MX1, but unlike the MX1 controller the MX2 controller just works as expected. Since the MX1 driver has more workarounds for bugs than anything else I had no success with supporting MX1 and MX2 in a sane way in one driver. Signed-off-by:
Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by:
Pierre Ossman <drzeus@drzeus.cx>
-
Bartlomiej Zolnierkiewicz authored
We need to pass struct ide_port_info also to ide_host_register(). v2: Fix v5/v6 mismatch noticed by Russell. Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by:
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
-
Atsushi Nemoto authored
The bcount is greater than 0 and less than or equal to 0x10000. Thus '(bcount & 0xffff) == 0x0000' can be simplified as 'bcount == 0x10000'. Suggested-by:
Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by:
Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by:
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
-
Bartlomiej Zolnierkiewicz authored
This is a port of libata's pata_cs5536.c (written by Martin K. Petersen) to IDE subsystem. Changes done while at it: * Reprogram PIO/MWDMA timings if needed before and after DMA transfer (chipset uses shared PIO/MWDMA timings). * Fix cable detection to report 80-wires cable if BIOS set it for any device on a port (IDE core will do drive-side cable detection later). * Don't disable UDMA while programming PIO timings. * Simplify PCI/MSR support. Pros of having IDE host driver in addition to libata's one: * IDE is much lighter than SCSI+libata, the host driver itself is also a bit smaller: text data bss dec hex filename 1261 496 4 1761 6e1 drivers/ata/pata_cs5536.o 1242 128 4 1374 55e drivers/ide/cs5536.o * This allows use of IDE features which are unavailable under libata. v2: * Fixes per review from Sergei: - simplify dependency check in Kconfig - use IDE_DRV_MASK also for ->drive_data - disable UDMA when programming MWDMA - program new DTC timings only when necessary - fix printk() level in cs5536_init_one() * Fix patch description according to comments from Alan and Sergei. v3: * Smarter masking of UDMA bits per Sergei's suggestion. Cc: Martin K. Petersen <mkp@mkp.net> Cc: Karl Auerbach <karl@iwl.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Acked-by:
Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by:
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
-
Gerhard Pircher authored
The AmigaOne uses the onboard VIA IDE controller in legacy mode (like the Pegasos). Signed-off-by:
Gerhard Pircher <gerhard_pircher@gmx.net> Cc: "Grant Likely" <grant.likely@secretlab.ca> Signed-off-by:
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
-
Ian Campbell authored
On reboot the loop in device_shutdown gets confused by these partially initialized devices and goes into an infinite loop. Therefore unregister and disable these devices. Signed-off-by:
Ian Campbell <ian.campbell@citrix.com> [bart: remove leftover hwif->present clearing + update patch description] Signed-off-by:
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
-
Bartlomiej Zolnierkiewicz authored
* Factor out port freeing from ide_host_free() to ide_free_port(). * Add ide_disable_port() and use it on ide_register_port() failure. Cc: Ian Campbell <Ian.Campbell@citrix.com> Signed-off-by:
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
-
Kay Sievers authored
Signed-off-by:
Kay Sievers <kay.sievers@vrfy.org> Cc: linux-ide@vger.kernel.org Acked-by:
Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by:
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
-
Borislav Petkov authored
This one fixes http://bugzilla.kernel.org/show_bug.cgi?id=12320. Signed-off-by:
Borislav Petkov <petkovbb@gmail.com> Signed-off-by:
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
-
David Vrabel authored
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-upstream
-
- Feb 02, 2009
-
-
Jens Axboe authored
Signed-off-by:
Jens Axboe <jens.axboe@oracle.com>
-
Alberto Bertogli authored
bvec_kmap_irq() and bvec_kunmap_irq() comments say they MUST be inlined, so mark them as __always_inline. Signed-off-by:
Alberto Bertogli <albertito@blitiri.com.ar> Signed-off-by:
Jens Axboe <jens.axboe@oracle.com>
-
Alberto Bertogli authored
The comment says "remember to add offset!", but the function already adds it. Signed-off-by:
Alberto Bertogli <albertito@blitiri.com.ar> Signed-off-by:
Jens Axboe <jens.axboe@oracle.com>
-
Pekka Enberg authored
-
Jens Axboe authored
Signed-off-by:
Jens Axboe <jens.axboe@oracle.com>
-
Jens Axboe authored
Some initial probe requests don't have disk->queue mapped yet, so we can't rely on a non-NULL queue in blk_queue_io_stat(). Wrap it in blk_do_io_stat(). Signed-off-by:
Jens Axboe <jens.axboe@oracle.com>
-
Risto Suominen authored
Since the complete re-write in 2.6.10, some PowerMacs (At least PowerMac 5500 and PowerMac G3 Beige rev A) with ATI Mach64 chip have suffered from unstable columns in their framebuffer image. This seems to depend on a value (4) read from PLL_EXT_CNTL register, which leads to incorrect DSP config parameters to be written to the chip. This patch uses a value calculated by aty_init_pll_ct instead, as a starting point. There are questions as to whether this should be extended to other platforms or maybe made dependent on specific chip types, but in the meantime, this has been tested on various powermacs and works for them so let's commit it. Signed-off-by:
Risto Suominen <Risto.Suominen@gmail.com> Tested-by:
Michael Pettersson <mike@it.uu.se> Cc: <stable@kernel.org> Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org>
-
Benjamin Herrenschmidt authored
Recently, a patch left DEBUG enabled in the powerpc common PCI code, resulting in an old bug in a pr_debug() statement to show up and cause a NULL dereference on some machines. This fixes the pr_debug() statement and reverts to DEBUG not being force-enabled in that file. Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org>
-
Stephen Rothwell authored
Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Acked-by:
Geoff Levand <geoffrey.levand@am.sony.com> Acked-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org>
-
Linus Torvalds authored
This essentially reverts commit 8edb08ca . It downgraded our mmap semaphore to a read-lock while mlocking pages, in order to allow other threads (and external accesses like "ps" et al) to walk the vma lists and take page faults etc. Which is a nice idea, but the implementation does not work. Because we cannot upgrade the lock back to a write lock without releasing the mmap semaphore, the code had to release the lock entirely and then re-take it as a writelock. However, that meant that the caller possibly lost the vma chain that it was following, since now another thread could come in and mmap/munmap the range. The code tried to work around that by just looking up the vma again and erroring out if that happened, but quite frankly, that was just a buggy hack that doesn't actually protect against anything (the other thread could just have replaced the vma with another one instead of totally unmapping it). The only way to downgrade to a read map _reliably_ is to do it at the end, which is likely the right thing to do: do all the 'vma' operations with the write-lock held, then downgrade to a read after completing them all, and then do the "populate the newly mlocked regions" while holding just the read lock. And then just drop the read-lock and return to user space. The (perhaps somewhat simpler) alternative is to just make all the callers of mlock_vma_pages_range() know that the mmap lock got dropped, and just re-grab the mmap semaphore if it needs to mlock more than one vma region. So we can do this "downgrade mmap sem while populating mlocked regions" thing right, but the way it was done here was absolutely not correct. Thus the revert, in the expectation that we will do it all correctly some day. Cc: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: Rik van Riel <riel@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: stable@kernel.org Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
-
- Feb 01, 2009
-
-
Devin Heitmueller authored
Just like with the s5h1411, the s5h1409 needs a soft-reset in order for it to know that the tuner has been told to change frequencies. This change changes the behavior from "random tuning times between 500ms to complete tuning lock failures" to "tuning lock consistently within 700ms". Thanks to Robert Krakora <rob.krakora@messagenetsystems.com> for doing initial testing of the patch on the KWorld 330U. Thanks to Andy Walls <awalls@radix.net> for doing testing of the patch on the HVR-1600. Thanks to Michael Krufky <mkrufky@linuxtv.org> for doing additional testing. Signed-off-by:
Devin Heitmueller <dheitmueller@linuxtv.org> Signed-off-by:
Michael Krufky <mkrufky@linuxtv.org> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
-
Mauro Carvalho Chehab authored
According with saa7130 public datasheet, saa7130 doesn't support digital audio. This is also confirmed by experimental tests. So, it doesn't make sense to let saa7134-alsa register for those chipsets. Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
-
Rusty Russell authored
cpumask_and() only initializes nr_cpu_ids bits, so the (deprecated) first_cpu() might find one of those uninitialized bits if nr_cpu_ids is less than NR_CPUS (as it can be for CONFIG_CPUMASK_OFFSTACK). Signed-off-by:
Rusty Russell <rusty@rustcorp.com.au> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
-