Kernel

[PATCH] perf: timechart: handle pthreads correctly
pthreads applications have multiple processes with the same "pid" but different "tid" values. This confuses timechart, because it's using the "pid" value to track processes. Switch to using "tid" to avoid this confusion. For non-pthreads applications tid == pid so there's no downside. Signed-off-by: Andy Isa... 1 Apr 2010 16:53

drivers/char/amiserial.c: Add missing local_irq_restore
On Mon, 29 Mar 2010 17:34:11 +0200 (CEST) Julia Lawall <julia(a)diku.dk> wrote: From: Julia Lawall <julia(a)diku.dk> Add local_irq_restore after the labels that can be reached after a local_irq_save. A simplified version of the semantic patch that finds this problem is as follows: (http://coccinel... 1 Apr 2010 16:53

jbd2: tag journal writes as metadata I/O
Hi, In running iozone for writes to small files, we noticed a pretty big discrepency between the performance of the deadline and cfq I/O schedulers. Investigation showed that I/O was being issued from 2 different contexts: the iozone process itself, and the jbd2/sdh-8 thread (as expected). Because ... 6 Apr 2010 15:19

oom: fix the unsafe usage of badness() in proc_oom_score()
On Thu, 1 Apr 2010, Oleg Nesterov wrote: proc_oom_score(task) have a reference to task_struct, but that is all. If this task was already released before we take tasklist_lock - we can't use task->group_leader, it points to nowhere - it is not safe to call badness() even if this task is ->g... 1 Apr 2010 15:45

[PATCH] readahead even for FMODE_RANDOM
Hi, I got a problem report with fio where larger block size random reads where markedly slower with buffered IO than with O_DIRECT, and the initial thought was that perhaps this was some fio oddity. The reporter eventually discovered that turning off the fadvise hint made it work fine. So I took a look, and it s... 1 Apr 2010 15:45

regulator: add support for Dallas DS1803 dual digital potentiometer
On Thu, Apr 01, 2010 at 01:23:32PM +0200, Rodolfo Giometti wrote: This looks good, a few nitpicky things below. +config REGULATOR_DS1803 + tristate "Dallas Maxim DS1803 addressable dual digital potentiometer" + depends on I2C + help + Say Y here to support the dual digital potentiometer on + ... 1 Apr 2010 15:45

Commit a5ee4eb7541 breaks OpenGL on RS780
Linus Torvalds wrote: On Thu, 1 Apr 2010, Alex Deucher wrote: Clemems' "PCI quirk: RS780/RS880: disable MSI completely" patch is the right approach I think. Note that it's only devices hung off the int gfx pci to pci bridge that have broken MSI (gfx and audio). MSI works fine on the PCIE slots.... 1 Apr 2010 14:38

2.6.33.1-rt11 - BUG?
I'm testing 2.6.33.1 on ppc 834x with rt11 patch. After system is up I keep seeing this same message from dmesg: BUG: sleeping function called from invalid context at kernel/rtmutex.c:684 pcnt: 0 0 in_atomic(): 0, irqs_disabled(): 1, pid: 16, name: events/0 Call Trace: [cf85be80] [c00096cc] show_stack+0x... 1 Apr 2010 19:07

Commit a5ee4eb7541 breaks OpenGL on RS780 (was: Re: Linux 2.6.34-rc3)
On Thu, 1 Apr 2010, Alex Deucher wrote: Clemems' "PCI quirk: RS780/RS880: disable MSI completely" patch is the right approach I think. Note that it's only devices hung off the int gfx pci to pci bridge that have broken MSI (gfx and audio). MSI works fine on the PCIE slots. I have a similar patch ... 1 Apr 2010 16:53

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