2015-03-17 11:33 GMT-04:00 Dario Faggioli <dario.faggi...@citrix.com>:
> In fact, printing the cpupool's CPU online mask
> for each vCPU is just redundant, as that is the
> same for all the vCPUs of all the domains in the
> same cpupool, while hard affinity is already part
> of the output of dumping domains info.
>
> Instead, print the intersection between hard
> affinity and online CPUs, which is --in case of this
> scheduler-- the effective affinity always used for
> the vCPUs.
>
> This change also takes the chance to add a scratch
> cpumask area, to avoid having to either put one
> (more) cpumask_t on the stack, or dynamically
> allocate it within the dumping routine. (The former
> being bad because hypervisor stack size is limited,
> the latter because dynamic allocations can fail, if
> the hypervisor was built for a large enough number
> of CPUs.)
>
> Such scratch area can be used to kill most of the
> cpumasks{_var}_t local variables in other functions
> in the file, but that is *NOT* done in this chage.
>
> Finally, convert the file to use keyhandler scratch,
> instead of open coded string buffers.
>
> Signed-off-by: Dario Faggioli <dario.faggi...@citrix.com>
> Cc: George Dunlap <george.dun...@eu.citrix.com>
> Cc: Meng Xu <xumengpa...@gmail.com>
> Cc: Jan Beulich <jbeul...@suse.com>
> Cc: Keir Fraser <k...@xen.org>
> ---
> Changes from v1:
> * improved changelog;
> * made a local variable to point to the correct
> scratch mask, as suggested during review.
> ---
Reviewed-by: Meng Xu <men...@cis.upenn.edu>
Thanks,
Best,
Meng
-----------
Meng Xu
PhD Student in Computer and Information Science
University of Pennsylvania
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