Kernel

[Bug 15618] New: 2.6.18->2.6.32->2.6.33 huge regression in performance
On Tue, 23 Mar 2010, Andrew Morton wrote: You should be able to simply set CONFIG_RWSEM_GENERIC_SPINLOCK=n, CONFIG_RWSEM_XCHGADD_ALGORITHM=y by hand, as I mentioned earlier? No. Doesn't work. The XADD code simply never worked on x86-64, which is why those three commits I pointed at are required. O... 24 Mar 2010 00:01

[PATCH 21/21] Staging: comedi: fix indent coding style issue in adq12b.c
This is a patch to the adq12b.c file that fixes up an indent warning found by the checkpatch.pl tool Signed-off-by: Maurice Dawson <mauricedawson2699(a)googlemail.com> --- drivers/staging/comedi/drivers/adq12b.c | 28 ++++++++++++++-------------- 1 files changed, 14 insertions(+), 14 deletions(-) diff --git a... 23 Mar 2010 15:57

[PATCH] sched: prevent compiler from optimising sched_avg_update loop
GCC 4.4.1 on ARM has been observed to replace the while loop in sched_avg_update with a call to uldivmod, resulting in the following build failure at link-time: kernel/built-in.o: In function `sched_avg_update': /linux-2.6/kernel/sched.c:1261: undefined reference to `__aeabi_uldivmod' /linux-2.6/kernel/sched.c:1... 23 Mar 2010 15:57

Do not compact within a preferred zone after a compaction failure
On Tue, 23 Mar 2010, Mel Gorman wrote: The fragmentation index may indicate that a failure it due to external s/it/is/ fragmentation, a compaction run complete and an allocation failure still ??? fail. There are two obvious reasons as to why o Page migration cannot move all pages so fragmen... 6 Apr 2010 22:03

[RFC PATCH] lib/random32: export pseudo-random number generator for modules
This patch moves the definition of struct rnd_state to linux/random.h and adds the functions prandom32() and prandom32_seed(). The former just calls the static __random32() which returns the next pseudo-random value given a state structure. The latter seeds a private state structure from a u64. For FCoE FC-BB... 23 Mar 2010 14:48

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Get Your Loan @3% Offer, Interested Please Contact Us -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ ... 23 Mar 2010 14:48

[Bug 15618] New: 2.6.18->2.6.32->2.6.33 huge regression in performance
On Mar 23, 2010, at 7:00 PM, Ingo Molnar wrote: NOTE! None of those are in 2.6.33 - they were merged afterwards. But they are in 2.6.34-rc1 (and obviously current -git). So Anton would have to compile his own kernel to test his load. another option is to run the rawhide kernel via something like:... 26 Mar 2010 00:19

ixgbe: Set IXGBE_RSC_CB(skb)->DMA field to zero after unmapping the address
On Mon, Mar 22, 2010 at 8:57 PM, Benjamin Herrenschmidt <benh(a)kernel.crashing.org> wrote: On Mon, 2010-03-22 at 17:59 +0000, Linux Kernel Mailing List wrote: Gitweb: � � http://git.kernel.org/linus/fd3686a842717b890fbe3024b83a616c54d5dba0 Commit: � � fd3686a842717b890fbe3024b83a616c54d5dba0 Parent: � � ... 23 Mar 2010 14:47

[PATCH 1/1] perf archive: Explain how to use the generated tarball
From: Arnaldo Carvalho de Melo <acme(a)redhat.com> [root(a)doppio ~]# perf archive Now please run: $ tar xvf perf.data.tar.bz2 -C ~/.debug wherever you need to run 'perf report' on. [root(a)doppio ~]# Cc: Frédéric Weisbecker <fweisbec(a)gmail.com> Cc: Mike Galbraith <efault(a)gmx.de> Cc: Peter Zijlstra <a.p.zijls... 23 Mar 2010 14:47

Export fragmentation index via /proc/extfrag_index
Reviewed-by: Christoph Lameter <cl(a)linux-foundation.org> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ ... 6 Apr 2010 20:58