[20.10 FEAT] Consistent cpu topology masks
Bug #1884782 reported by
bugproxy
This bug affects 1 person
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| Ubuntu on IBM z Systems |
Fix Released
|
High
|
Skipper Bug Screeners | ||
| linux (Ubuntu) |
Fix Released
|
Undecided
|
Frank Heimes | ||
Bug Description
The cpu topology sibling masks on s390 contain also bits of cpus which are offline. This is different to other architectures, therefore change this to make sure s390 behaves like all other architectures.
Currently this is already a problem, since common code scheduler expects e.g. cpu_smt_mask(cpu) to reflect reality, which is not the case for s390.
Available with kernel 5.7
| tags: | added: architecture-s39064 bugnameltc-185132 severity-high targetmilestone-inin2010 |
| Changed in ubuntu: | |
| assignee: | nobody → Skipper Bug Screeners (skipper-screen-team) |
| affects: | ubuntu → linux (Ubuntu) |
Revision history for this message
| Frank Heimes (fheimes) wrote | #1 |
| Changed in ubuntu-z-systems: | |
| status: | New → Incomplete |
| assignee: | nobody → Skipper Bug Screeners (skipper-screen-team) |
| importance: | Undecided → High |
| Changed in linux (Ubuntu): | |
| assignee: | Skipper Bug Screeners (skipper-screen-team) → Frank Heimes (fheimes) |
| Changed in ubuntu-z-systems: | |
| status: | Incomplete → In Progress |
Revision history for this message
| Frank Heimes (fheimes) wrote | #2 |
| Changed in linux (Ubuntu): | |
| status: | New → Fix Released |
| Changed in ubuntu-z-systems: | |
| status: | In Progress → Fix Released |
Revision history for this message
| bugproxy (bugproxy) wrote Comment bridged from LTC Bugzilla | #3 |
| information type: | Private → Public |
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Can you please share the relevant commits?