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10 Commits

Author SHA1 Message Date
David Goldblatt
d93eef2f40 HPA: Introduce a redesigned hpa_central_t. 
For now, this only handles allocating virtual address space to shards, with no
reuse.  This is framework, though; it will change over time.
 2021-07-23 21:59:59 -07:00
David Goldblatt
6630c59896 HPA: Hugification hysteresis. 
We wait a while after deciding a huge extent should get hugified to see if it
gets purged before long.  This avoids hugifying extents that might shortly get
dehugified for purging.

Rename and use the hpa_dehugification_threshold option support code for this,
since it's now ignored.
 2021-07-12 17:59:18 -07:00
David Goldblatt
113938b6f4 HPA: Pull out a hooks type. 
For now, this is a no-op change.  In a subsequent commit, it will be useful for
testing.
 2021-07-12 17:59:18 -07:00
David Goldblatt
ce9386370a HPA: Implement batch allocation. 2021-02-19 15:10:54 -08:00
David Goldblatt
b3df80bc79 Pull HPA options into a containing struct. 
Currently that just means max_alloc, but we're about to add more.  While we're
touching these lines anyways, tweak things to be more in line with testing.
 2021-02-04 20:58:31 -08:00
David Goldblatt
ca30b5db2b Introduce hpdata_t. 
Using an edata_t both for hugepages and the allocations within those hugepages
was convenient at first, but has outlived its usefulness.  Representing
hugepages explicitly, with their own data structure, will make future
development easier.
 2020-12-07 06:21:08 -08:00
David Goldblatt
4a15008cfb HPA unit test: skip if unsupported. 
Previously, we replicated the logic in hpa_supported in the test as well.
 2020-12-07 06:21:08 -08:00
David Goldblatt
43af63fff4 HPA: Manage whole hugepages at a time. 
This redesigns the HPA implementation to allow us to manage hugepages all at
once, locally, without relying on a global fallback.
 2020-12-07 06:21:08 -08:00
David Goldblatt
534504d4a7 HPA: add size-exclusion functionality. 
I.e. only allowing allocations under or over certain sizes.
 2020-10-23 11:14:34 -07:00
David Goldblatt
1c7da33317 HPA: Tie components into a PAI implementation. 2020-10-23 11:14:34 -07:00