Kernel

Why PAGEOUT_IO_SYNC stalls for a long time
In this week, I've tested some IO congested workload for a while. and probably I did reproduced Andreas's issue. So, I would like to explain current lumpy reclaim how works and why so much sucks. 1. Now isolate_lru_pages() have following pfn neighber grabbing logic. for (; pfn < end_pfn; pfn... 5 Aug 2010 04:48

ftrace: record command lines at more appropriate moment
Excerpts from Li Zefan's message of Wed Jul 28 12:55:54 +1000 2010: @@ -1112,6 +1110,7 @@ tracing_generic_entry_update(struct trace_entry *entry, unsigned long flags, { struct task_struct *tsk = current; + tracing_record_cmdline(tsk); Now this function is called everytime a tr... 29 Jul 2010 07:29

vmscan: tracing: Update post-processing script to distinguish between anon and file IO from page reclaim
On Wed, Jul 28, 2010 at 07:05:07AM -0400, Christoph Hellwig wrote: Just wondering if you ever looked into the perf perl scripting support? Making this a directly accesible command in perf would be quite nice. I'm aware of the possibility and have a long-standing TODO item to convert both post-processing s... 28 Jul 2010 08:32

[RFC][PATCH] PCI / PCIe: Ask BIOS for control of all native services at once (v3)
On Wednesday, July 28, 2010, Rafael J. Wysocki wrote: On Tuesday, July 27, 2010, Matthew Garrett wrote: On Tue, Jul 27, 2010 at 08:42:39PM +0200, Rafael J. Wysocki wrote: On Tuesday, July 27, 2010, Matthew Garrett wrote: I've done some more testing of this and found that my intial belief ... 28 Jul 2010 07:26

writeback: Prioritise dirty inodes encountered by reclaim for background flushing
On Wed, Jul 28, 2010 at 11:27:23AM +0100, Mel Gorman wrote: It is preferable that as few dirty pages are dispatched for cleaning from the page reclaim path. When dirty pages are encountered by page reclaim, this patch marks the inodes that they should be dispatched immediately. When the background flusher r... 28 Jul 2010 07:26

[GIT/PATCH 0/4] Do not use IRQF_TIMER for non timer interrupts
Hi Thomas, A small number of users of IRQF_TIMER are using it for the implied no suspend behaviour on interrupts which are not timer interrupts. Therefore the following series renames the IRQF_TIMER flag to IRQF_NO_SUSPEND and updates the users which are not timer interrupts to use the new name. IRQF_TIMER is ... 28 Jul 2010 07:26

[PATCH 3/4] powerpc: Use IRQF_NO_SUSPEND not IRQF_TIMER for non-timer interrupts
kw_i2c_irq and via_pmu_interrupt are not timer interrupts and therefore should not use IRQF_TIMER. Use the recently introduced IRQF_NO_SUSPEND instead since that is the actual desired behaviour. Signed-off-by: Ian Campbell <ian.campbell(a)citrix.com> Cc: Thomas Gleixner <tglx(a)linutronix.de> Cc: Benjamin Herrenschm... 28 Jul 2010 07:26

[PATCH 1/4] irq: rename IRQF_TIMER to IRQF_NO_SUSPEND
Continue to provide IRQF_TIMER as an alias to IRQF_NO_SUSPEND since I think it is worth preserving the nice self-documenting name (where it is used appropriately). It also avoid needing to patch all the many users who are using the flag for an actual timer interrupt. Signed-off-by: Ian Campbell <ian.campbell(a)citr... 28 Jul 2010 07:26

[PATCH 2/4] ixp4xx-beeper: Use IRQF_NO_SUSPEND not IRQF_TIMER for non-timer interrupt
ixp4xx_spkr_interrupt is not a timer interrupt and therefore should not use IRQF_TIMER. Use the recently introduced IRQF_NO_SUSPEND instead since that is the actual desired behaviour. Signed-off-by: Ian Campbell <ian.campbell(a)citrix.com> Cc: Thomas Gleixner <tglx(a)linutronix.de> Cc: Dmitry Torokhov <dmitry.torokh... 28 Jul 2010 07:26

[PATCH 3/9] vmscan: tracing: Update post-processing script to distinguish between anon and file IO from page reclaim
It is useful to distinguish between IO for anon and file pages. This patch updates vmscan-tracing-add-a-postprocessing-script-for-reclaim-related-ftrace-events.patch so the post-processing script can handle the additional information. Signed-off-by: Mel Gorman <mel(a)csn.ul.ie> --- .../trace/postprocess/trace-vm... 28 Jul 2010 07:26