On Wed, 02 May 2012 12:20:40 +0200, Peter Zijlstra <pet...@infradead.org> wrote:
> On Wed, 2012-05-02 at 14:21 +0530, Nikunj A Dadhania wrote:
> > [root@krm1 linux]# grep HAVE_RCU_TABLE .config
> > CONFIG_HAVE_RCU_TABLE_FREE=y
> > [root@krm1 linux]# make -j32 -s
> > mm/memory.c: In function ‘tlb_remove_table_one’:
> > mm/memory.c:315: error: implicit declaration of function
> > ‘__tlb_remove_table’
> >
> > I suppose we need to have __tlb_remove_table. Trying to understand what
> > needs to be done there.
>
> Argh, I really should get back to unifying all mmu-gather
> implementations :/
>
> I think something like the below ought to sort it.
>
Thanks a lot.
> Completely untested though..
>
Tested-by: Nikunj A Dadhania <nik...@linux.vnet.ibm.com>
Here is the comparison with the other version.
Gang pv_spin_flush pv_spin_flush_rcu
1VM 1.01 0.49 0.49
2VMs 7.07 4.04 4.06
4VMs 9.07 5.27 5.19
8VMs 9.99 7.65 7.80
Will test other use cases as well and report back.
Regards
Nikunj
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