Hi Andrew,
On Tue, Dec 22, 2015 at 03:32:19PM -0800, Andrew Pinski wrote:
> On Tue, Dec 21, 2015 at 5:43 AM, Arnd Bergmann wrote:
> > On Monday 21 December 2015, Will Deacon wrote:
> >> On Sat, Dec 19, 2015 at 04:11:18PM -0800, Andrew Pinski wrote:
> I think it is the prefetching. ThunderX T88
Hi Andrew,
On Tue, Dec 22, 2015 at 03:32:19PM -0800, Andrew Pinski wrote:
> On Tue, Dec 21, 2015 at 5:43 AM, Arnd Bergmann wrote:
> > On Monday 21 December 2015, Will Deacon wrote:
> >> On Sat, Dec 19, 2015 at 04:11:18PM -0800, Andrew Pinski wrote:
> I think it is the prefetching.
On Tue, Dec 21, 2015 at 5:43 AM, Arnd Bergmann wrote:
>
> On Monday 21 December 2015, Will Deacon wrote:
>> On Sat, Dec 19, 2015 at 04:11:18PM -0800, Andrew Pinski wrote:
>> > Adding a check for the cache line size is not much overhead.
>> > Special case 128 byte cache line size.
>> > This
On Tue, Dec 21, 2015 at 5:43 AM, Arnd Bergmann wrote:
>
> On Monday 21 December 2015, Will Deacon wrote:
>> On Sat, Dec 19, 2015 at 04:11:18PM -0800, Andrew Pinski wrote:
>> > Adding a check for the cache line size is not much overhead.
>> > Special case 128 byte cache line size.
On Monday 21 December 2015, Will Deacon wrote:
> On Sat, Dec 19, 2015 at 04:11:18PM -0800, Andrew Pinski wrote:
> > Adding a check for the cache line size is not much overhead.
> > Special case 128 byte cache line size.
> > This improves copy_page by 85% on ThunderX compared to the
> > original
On Sat, Dec 19, 2015 at 04:11:18PM -0800, Andrew Pinski wrote:
> Adding a check for the cache line size is not much overhead.
> Special case 128 byte cache line size.
> This improves copy_page by 85% on ThunderX compared to the
> original implementation.
So this patch seems to:
- Align the
On Monday 21 December 2015, Will Deacon wrote:
> On Sat, Dec 19, 2015 at 04:11:18PM -0800, Andrew Pinski wrote:
> > Adding a check for the cache line size is not much overhead.
> > Special case 128 byte cache line size.
> > This improves copy_page by 85% on ThunderX compared to the
> > original
On Sat, Dec 19, 2015 at 04:11:18PM -0800, Andrew Pinski wrote:
> Adding a check for the cache line size is not much overhead.
> Special case 128 byte cache line size.
> This improves copy_page by 85% on ThunderX compared to the
> original implementation.
So this patch seems to:
- Align the
Adding a check for the cache line size is not much overhead.
Special case 128 byte cache line size.
This improves copy_page by 85% on ThunderX compared to the
original implementation.
For LMBench, it improves between 4-10%.
Signed-off-by: Andrew Pinski
---
arch/arm64/lib/copy_page.S | 39
Adding a check for the cache line size is not much overhead.
Special case 128 byte cache line size.
This improves copy_page by 85% on ThunderX compared to the
original implementation.
For LMBench, it improves between 4-10%.
Signed-off-by: Andrew Pinski
---
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