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26 Commits

Author SHA1 Message Date
Rafal Stefanowski
38e7e19290 Update copyright statements 
Signed-off-by: Rafal Stefanowski <rafal.stefanowski@intel.com>
 2020-04-28 13:37:54 +02:00
Jan Musial
d2fe82dc85 Add memory check before engaging promotion policy 
Signed-off-by: Jan Musial <jan.musial@intel.com>
 2020-03-16 09:09:42 +01:00
Jan Musial
4eb5612832 Reorder fields in nhit_hash map to improve memory efficiency 
Signed-off-by: Jan Musial <jan.musial@intel.com>
 2020-03-06 12:36:46 +01:00
Jan Musial
5eca548e22 Make sure NHIT won't attempt to take the same semaphore twice 
Signed-off-by: Jan Musial <jan.musial@intel.com>
 2019-12-31 14:16:18 +01:00
Jan Musial
4536a51f59 Fix init of nhit + code styling 
Signed-off-by: Jan Musial <jan.musial@intel.com>
 2019-12-31 14:16:18 +01:00
Adam Rutkowski
5113542c7f
Merge pull request #297 from mmichal10/pp-params-in-sb 
Store PP config params in cache superblock.
 2019-10-01 12:32:15 +02:00
Michal Mielewczyk
e16d4e6dda Initialize promotion policy on cache attach. 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2019-10-01 06:11:53 -04:00
Michal Rakowski
b78557a2cc Change env_spinlock_init to non-void function 
Signed-off-by: Michal Rakowski <michal.rakowski@intel.com>
 2019-09-30 17:15:27 +02:00
Michal Mielewczyk
dfc55538ce Store PP config params in cache superblock. 
It allows to modify and retrieve particular PP params event if it isn't active
and store values between cache stop and load.

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2019-09-27 10:55:58 -04:00
Michal Rakowski
5efa5ac414 nhit PP: Prevent setting nhit policy again if it was already set 2019-09-25 14:59:23 +02:00
Michal Rakowski
547306efea nhit PP: change trigger_threshold to percent value 
Signed-off-by: Michal Rakowski <michal.rakowski@intel.com>
 2019-09-25 14:59:23 +02:00
Michal Rakowski
23aba6a9f3 nhit PP: Added info about setting nhit params 
Signed-off-by: Michal Rakowski <michal.rakowski@intel.com>
 2019-09-25 11:04:51 +02:00
Rafal Stefanowski
9cb5c60c80 Accept max values of nhit PP as valid. 
Signed-off-by: Rafal Stefanowski <rafal.stefanowski@intel.com>
 2019-09-23 15:58:57 +02:00
Jan Musial
827273645c Use better function for calculating occupancy 2019-09-20 14:56:17 +02:00
Kamil Łepek
7131178e71
Merge pull request #272 from imjfckm/fix-pp-validation 
Add PP type validation
 2019-09-18 17:30:23 +02:00
Jan Musial
0c1ccddf8a Add PP type validation 
Signed-off-by: Jan Musial <jan.musial@intel.com>
 2019-09-18 15:12:23 +02:00
Jan Musial
0e85ebe4a3 Get PP params in line with rest of OCF 
Signed-off-by: Jan Musial <jan.musial@intel.com>
 2019-09-18 11:15:41 +02:00
Jan Musial
e8fc2c24f1 Add missing stuff from get_param in PP 
Signed-off-by: Jan Musial <jan.musial@intel.com>
 2019-09-17 15:05:29 +02:00
Michał Mielewczyk
0391fc17b7
Merge pull request #255 from imjfckm/pp-tests 
Add promotion policies functional tests
 2019-09-16 09:34:16 +02:00
Jan Musial
703a757db1 Fix minor bugs in promotion policy 
Signed-off-by: Jan Musial <jan.musial@intel.com>
 2019-09-11 10:31:14 +02:00
Jan Musial
633f31716e Make NHIT API naming convention similar to cleaning 
Signed-off-by: Jan Musial <jan.musial@intel.com>
 2019-09-11 07:31:50 +02:00
Adam Rutkowski
13cf871a13 Per-execution-context freelists 
Global free cacheline list is divided into a set of freelists, one
per execution context. When attempting to map addres to cache, first
the freelist for current execution context is considered (fast path).
If current execution context freelist is empty (fast path failure),
mapping function attempts to get freelist from other execution context
list (slow path).

The purpose of this change is improve concurrency in freelist access.
It is part of fine granularity metadata lock implementation.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2019-09-09 16:19:52 -04:00
Jan Musial
ee3fdb0506 Change nhit_hash names to avoid collision with kernel 
Signed-off-by: Jan Musial <jan.musial@intel.com>
 2019-08-29 13:24:54 +02:00
Jan Musial
a1d3cf0c4d Switching mechanism for promotion policies 
Signed-off-by: Jan Musial <jan.musial@intel.com>
 2019-08-29 13:24:26 +02:00
Jan Musial
62a0ccdd9f nhit promotion policy implementation 
Signed-off-by: Jan Musial <jan.musial@intel.com>
 2019-08-22 13:34:38 +02:00
Jan Musial
917cbd859a Add promotion policy API and use it in I/O path 
Promotion policy is supposed to perform ALRU noise filtering by
eliminating one-hit wonders being added to cache and polluting it.

Signed-off-by: Jan Musial <jan.musial@intel.com>
 2019-07-19 13:52:00 +02:00