Displaying 8 results from an estimated 8 matches for "mm_cpumask".
2019 Jul 02
0
[PATCH v2 4/9] x86/mm/tlb: Flush remote and local TLBs concurrently
...tion calls and the indirect branch introduce some overhead, and
might make local TLB flushes slower than they were before the recent
changes.
Before calling the SMP infrastructure, check if only a local TLB flush
is needed to restore the lost performance in this common case. This
requires to check mm_cpumask() one more time, but unless this mask is
updated very frequently, this should impact performance negatively.
Cc: "K. Y. Srinivasan" <kys at microsoft.com>
Cc: Haiyang Zhang <haiyangz at microsoft.com>
Cc: Stephen Hemminger <sthemmin at microsoft.com>
Cc: Sasha Levin <...
2019 Jul 02
2
[PATCH v2 0/9] x86: Concurrent TLB flushes
Currently, local and remote TLB flushes are not performed concurrently,
which introduces unnecessary overhead - each INVLPG can take 100s of
cycles. This patch-set allows TLB flushes to be run concurrently: first
request the remote CPUs to initiate the flush, then run it locally, and
finally wait for the remote CPUs to finish their work.
In addition, there are various small optimizations to avoid
2019 Jul 19
0
[PATCH v3 4/9] x86/mm/tlb: Flush remote and local TLBs concurrently
...tion calls and the indirect branch introduce some overhead, and
might make local TLB flushes slower than they were before the recent
changes.
Before calling the SMP infrastructure, check if only a local TLB flush
is needed to restore the lost performance in this common case. This
requires to check mm_cpumask() one more time, but unless this mask is
updated very frequently, this should impact performance negatively.
Cc: "K. Y. Srinivasan" <kys at microsoft.com>
Cc: Haiyang Zhang <haiyangz at microsoft.com>
Cc: Stephen Hemminger <sthemmin at microsoft.com>
Cc: Sasha Levin <...
2019 Jul 19
5
[PATCH v3 0/9] x86: Concurrent TLB flushes
[ Cover-letter is identical to v2, including benchmark results,
excluding the change log. ]
Currently, local and remote TLB flushes are not performed concurrently,
which introduces unnecessary overhead - each INVLPG can take 100s of
cycles. This patch-set allows TLB flushes to be run concurrently: first
request the remote CPUs to initiate the flush, then run it locally, and
finally wait for
2019 Jul 03
2
[PATCH v2 4/9] x86/mm/tlb: Flush remote and local TLBs concurrently
...anch introduce some overhead, and
> might make local TLB flushes slower than they were before the recent
> changes.
>
> Before calling the SMP infrastructure, check if only a local TLB flush
> is needed to restore the lost performance in this common case. This
> requires to check mm_cpumask() one more time, but unless this mask is
> updated very frequently, this should impact performance negatively.
>
> Cc: "K. Y. Srinivasan" <kys at microsoft.com>
> Cc: Haiyang Zhang <haiyangz at microsoft.com>
> Cc: Stephen Hemminger <sthemmin at microsoft.co...
2019 Jul 03
2
[PATCH v2 4/9] x86/mm/tlb: Flush remote and local TLBs concurrently
...anch introduce some overhead, and
> might make local TLB flushes slower than they were before the recent
> changes.
>
> Before calling the SMP infrastructure, check if only a local TLB flush
> is needed to restore the lost performance in this common case. This
> requires to check mm_cpumask() one more time, but unless this mask is
> updated very frequently, this should impact performance negatively.
>
> Cc: "K. Y. Srinivasan" <kys at microsoft.com>
> Cc: Haiyang Zhang <haiyangz at microsoft.com>
> Cc: Stephen Hemminger <sthemmin at microsoft.co...
2019 Jul 03
1
[Xen-devel] [PATCH v2 4/9] x86/mm/tlb: Flush remote and local TLBs concurrently
...>>> might make local TLB flushes slower than they were before the recent
>>> changes.
>>> Before calling the SMP infrastructure, check if only a local TLB flush
>>> is needed to restore the lost performance in this common case. This
>>> requires to check mm_cpumask() one more time, but unless this mask is
>>> updated very frequently, this should impact performance negatively.
>>> Cc: "K. Y. Srinivasan" <kys at microsoft.com>
>>> Cc: Haiyang Zhang <haiyangz at microsoft.com>
>>> Cc: Stephen Hemminger &l...
2019 Jul 03
0
[PATCH v2 4/9] x86/mm/tlb: Flush remote and local TLBs concurrently
...some overhead, and
>> might make local TLB flushes slower than they were before the recent
>> changes.
>> Before calling the SMP infrastructure, check if only a local TLB flush
>> is needed to restore the lost performance in this common case. This
>> requires to check mm_cpumask() one more time, but unless this mask is
>> updated very frequently, this should impact performance negatively.
>> Cc: "K. Y. Srinivasan" <kys at microsoft.com>
>> Cc: Haiyang Zhang <haiyangz at microsoft.com>
>> Cc: Stephen Hemminger <sthemmin at mi...