Kernel

mprotect and vmas
Quite some time there was a discussion around mprotect and why it creates vmas. The issue never got resolved IIRC but the urgency is more pressing than ever. We have today commodity machines with 8 sockets and 512G of RAM with single processes using all these resources. From what I remember the idea was that a... 14 Apr 2010 21:10

[PATCH] memcg: update documentation v8
On Wed, 14 Apr 2010 11:11:46 -0700 Randy Dunlap <randy.dunlap(a)oracle.com> wrote: #echo 1 > memory.oom_control BTW: it would be a lot easier [for reviewing] if you could freeze (or merge) this version and then apply fixes on top of it with a different (and shorter) patch. Reviewed-by: Ran... 14 Apr 2010 21:10

2.6.34-rc3 Disable R_OK (Early ACK) on SII 3726/4726 PMP
Hello, On 04/14/2010 09:46 AM, Grant Grundler wrote: In 2009, While running "cache read" performance test of drives behind SII PMP we encountered a "all 5 drives" timeout on more than 30% of the machines under test. This patch reduces the rate by a factor of about 70. Low enough that we didn't care to f... 14 Apr 2010 21:10

menuconfig: add support to show hidden options which have prompts
On Wed, 14 Apr 2010 11:46:02 +0800 Li Zefan wrote: Usage: Press <Z> to show all config symbols which have prompts. to show or unshow (toggle) all config symbols which have prompts. Nice and helpful, yes, thanks. diff --git a/scripts/kconfig/mconf.c b/scripts/kconfig/mconf.c index 8413cf3..33f3... 14 Apr 2010 20:04

[tip:perf/core] perf: Fix hlist related build error
Commit-ID: 95476b64ab11d528de2557366ec584977c215b9e Gitweb: http://git.kernel.org/tip/95476b64ab11d528de2557366ec584977c215b9e Author: Frederic Weisbecker <fweisbec(a)gmail.com> AuthorDate: Wed, 14 Apr 2010 23:42:18 +0200 Committer: Ingo Molnar <mingo(a)elte.hu> CommitDate: Thu, 15 Apr 2010 01:34:46 +0200 ... 14 Apr 2010 20:04

gconfig: add support to show hidden options that have prompts
On Wed, 14 Apr 2010 11:46:24 +0800 Li Zefan wrote: There's a button in gconfig to "Show all options", but I think normally we are not interested in those configs which have no prompt and thus can't be changed, so here I add a new button to show hidden options which have prompts. (The new option is call... 15 Apr 2010 04:49

[tip:perf/core] perf: Fix dynamic field detection
Commit-ID: a1e2f60e3efc812bf66a2be0d8530ee175003f6d Gitweb: http://git.kernel.org/tip/a1e2f60e3efc812bf66a2be0d8530ee175003f6d Author: Thomas Gleixner <tglx(a)linutronix.de> AuthorDate: Wed, 14 Apr 2010 23:58:03 +0200 Committer: Ingo Molnar <mingo(a)elte.hu> CommitDate: Thu, 15 Apr 2010 01:34:46 +0200 per... 14 Apr 2010 20:04

rmap: add exclusively owned pages to the newest anon_vma
On Wed, Apr 14, 2010 at 05:59:28PM -0400, Rik van Riel wrote: The recent anon_vma fixes cause many anonymous pages to end up in the parent process anon_vma, even when the page is exclusively owned by the current process. Adding exclusively owned anonymous pages to the top anon_vma reduces rmap scanni... 15 Apr 2010 12:31

[PATCH] staging/dt3155: fix 50Hz configuration
According to the header file, dt3155_io.h, the 50/60 Hz configuration is controlled by a bit in the I2C CSR2 register (bit 2). The function dt3155_init_isr actually reads the I2C CONFIG register into the global I2C_CSR union variable then modifies the bit. It then does a write to the I2C CONFIG register with the ... 14 Apr 2010 20:03

cfq-iosched: Keep track of average think time for the sync-noidle workload.
Vivek Goyal <vgoyal(a)redhat.com> writes: On Wed, Apr 14, 2010 at 05:17:03PM -0400, Jeff Moyer wrote: @@ -3678,11 +3710,14 @@ static void *cfq_init_queue(struct request_queue *q) /* Init root service tree */ cfqd->grp_service_tree = CFQ_RB_ROOT; + cfqd->grp_service_tree.last_end_request =... 14 Apr 2010 20:03