On Thu, 2011-12-08 at 17:11 +1100, Anton Blanchard wrote:
> Implement a POWER7 optimised copy_to_user/copy_from_user using VMX.
> For large aligned copies this new loop is over 10% faster, and for
> large unaligned copies it is over 200% faster.
Breaks !CONFIG_ALTIVEC build an pops some WARN's wit
On Mon, 2011-12-19 at 14:00 +1100, Benjamin Herrenschmidt wrote:
> On Thu, 2011-12-08 at 17:11 +1100, Anton Blanchard wrote:
> > Implement a POWER7 optimised copy_to_user/copy_from_user using VMX.
> > For large aligned copies this new loop is over 10% faster, and for
> > large unaligned copies it i
Hello, all
I am a new user of the board TWR-MPC5125 made by freescale. Now I am trying to
porting the new kernel, i.e. the version 3.0.4, to this board. I have porting
the serial driver and the nand flash driver successfully. And I can also mount
the root file system. But I can not use the ethe
Unpaired calling of probe_hcall_entry and probe_hcall_exit might happen
as following, which could cause incorrect preempt count.
__trace_hcall_entry => trace_hcall_entry -> probe_hcall_entry =>
get_cpu_var => preempt_disable
__trace_hcall_exit => trace_hcall_exit -> probe_hcall_exit =>
put_cpu_v
Unpaired calling of __trace_hcall_entry and __trace_hcall_exit could
cause incorrect preempt count. And it might happen as the global
variable hcall_tracepoint_refcount is checked separately before calling
them.
I don't know much about the powerpc arch. But the idea here is to store
the hcall_tra
Hi,
Is there RapidIO Direct Memory I/O Support in the latest kernel?
I've seen these patches from Freescale, but it seems they were never
integrated-
http://kerneltrap.org/mailarchive/linux-netdev/2009/5/12/5686954
Does anyone know why these weren't integrated?
What is the latest state of these
