Kernel

vmalloc performance
Hi, I've noticed that vmalloc seems to be rather slow. I wrote a test kernel module to track down what was going wrong. The kernel module does one million vmalloc/touch mem/vfree in a loop and prints out how long it takes. The source of the test kernel module can be found as an attachment to this bz: https://... 30 Apr 2010 15:08

KVM: remove unused code in kvm_coalesced_mmio_init()
On 04/12/2010 12:34 PM, wzt.wzt(a)gmail.com wrote: ret is already set as ENOMEM before, so the second ret = -ENOMEM; can be removed. diff --git a/virt/kvm/coalesced_mmio.c b/virt/kvm/coalesced_mmio.c index 5169736..c0dcfb7 100644 --- a/virt/kvm/coalesced_mmio.c +++ b/virt/kvm/coalesced_mmio.c @@ -... 12 Apr 2010 12:32

rmap: make anon_vma_prepare link in all the anon_vmas of a mergeable VMA
On Tue, 2010-04-13 at 00:17 +0900, Minchan Kim wrote: Concurrent reclaim/gup/whatever could still have a count out on the page delaying the actual free beyond the tlb gather RCU section. anon_vma lock is just valid in case of page_mapped. if reclaim/gup/whatever want to use anon_vma, it should check... 12 Apr 2010 12:32

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[GIT PULL] nilfs2 fixes for 2.6.34
Hi Linus, please pull from: git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2.git for-linus to grab the following fixes, only containing trivial ones. Thanks! Ryusuke Konishi -- The following changes since commit 2eaa9cfdf33b8d7fb7aff27792192e0019ae8fc6: Linus Torvalds (1): Lin... 12 Apr 2010 11:25

blkio: Changes to more io-controller stats patches to address
On Fri, Apr 09, 2010 at 07:35:35PM -0700, Divyesh Shah wrote: review comments. Changelog: (in response to Vivek Goyal's comments) o group blkiocg_update_blkio_group_dequeue_stats() with other DEBUG functions o rename blkiocg_update_set_active_queue_stats() to blkiocg_update_avg_queue_size_stats() ... 12 Apr 2010 11:25

Socket Direct Protocol: help (2)
On Apr 12, 2010 10:14 AM, Andrea Gozzelino <Andrea.Gozzelino(a)lnl.infn.it> wrote: Good morning, I'm testing some Neteffect cards (Intel code E10G81GP - Neteffect NE020.LP.1.SSR). PC has Linux| (kernel version) 2.6.18-164.15.1.el5 | x86_64 x86_64 x86_64 GNU/Linux. In this phase, I measure the... 23 Apr 2010 21:13

ide: add drive->dma_mode field
Bartlomiej Zolnierkiewicz wrote: From: Bartlomiej Zolnierkiewicz <bzolnier(a)gmail.com> Subject: [PATCH] ide: add drive->dma_mode field Add dma_mode field to ide_drive_t matching dma_mode field used in struct ata_device. The validity of the field is restricted to ->dma_pio_mode method only current... 12 Apr 2010 11:24

alim15x3: fix handling of UDMA enable bit
Bartlomiej Zolnierkiewicz wrote: From: Bartlomiej Zolnierkiewicz <bzolnier(a)gmail.com> Subject: [PATCH] alim15x3: fix handling of UDMA enable bit Clear UDMA enable bit also for PIO modes. Sorry for late mail but I fail to understand why this was done and what this patch fixes. Based on lib... 13 Apr 2010 11:41

hwmon: Switch applesmc maintainer
On 04/12/2010 09:27 PM, Henrik Rydberg wrote: Nicolas has expressed a wish to be relieved from the maintenance of applesmc, so we simply switch maintainer with this patch. Thank you. Signed-off-by: Henrik Rydberg<rydberg(a)euromail.se> Signed-off-by: Nicolas Boichat <nicolas(a)boichat.ch> --- MAI... 12 Apr 2010 11:24