iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

sched/numa: Document vma_numab_state fields

Browse Source 
Document the intended usage of the fields.

[ mingo: Reformatted to take less vertical space & tidied it up. ]

Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20231010083143.19593-2-mgorman@techsingularity.net
This commit is contained in:
Mel Gorman 2023-10-10 09:31:38 +01:00 committed by Ingo Molnar
parent f2273f4e19
commit 9ae5c00ea2
1 changed files with 21 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
include/linux/mm_types.h
View File

@ -551,8 +551,29 @@ struct vma_lock {
};
struct vma_numab_state {
/*
* Initialised as time in 'jiffies' after which VMA
* should be scanned. Delays first scan of new VMA by at
* least sysctl_numa_balancing_scan_delay:
*/
unsigned long next_scan;
/*
* Time in jiffies when access_pids[] is reset to
* detect phase change behaviour:
*/
unsigned long next_pid_reset;
/*
* Approximate tracking of PIDs that trapped a NUMA hinting
* fault. May produce false positives due to hash collisions.
*
* [0] Previous PID tracking
* [1] Current PID tracking
*
* Window moves after next_pid_reset has expired approximately
* every VMA_PID_RESET_PERIOD jiffies:
*/
unsigned long access_pids[2];
};