perf: qcom: Add L3 cache PMU driver
Bug #1689856 reported by
dann frazier
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
High
|
dann frazier | ||
Zesty |
Fix Released
|
High
|
dann frazier |
Bug Description
[Impact]
Without this driver, users of Qualcomm QDF2400 servers will be unable to profile L3 cache events.
[Test case]
ubuntu@ubuntu:~$ sudo perf list | grep l3cache | wc -l
84
Without this driver, there are 0.
[Regression Risk]
This is a new driver that is only used on these servers, so the regression risk is pretty isolated to this platform. To mitigate the risk there, I ran perf_fuzzer on that system and verified that it survived. Note: I did this testing w/ a workaround for LP: #1689855 applied, to avoid hangs caused by a hardware issue.
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
Changed in linux (Ubuntu Zesty): | |
status: | New → Confirmed |
Changed in linux (Ubuntu): | |
assignee: | nobody → dann frazier (dannf) |
Changed in linux (Ubuntu Zesty): | |
assignee: | nobody → dann frazier (dannf) |
Changed in linux (Ubuntu): | |
importance: | Undecided → High |
Changed in linux (Ubuntu Zesty): | |
importance: | Undecided → High |
Changed in linux (Ubuntu): | |
status: | Confirmed → Fix Committed |
Changed in linux (Ubuntu Zesty): | |
status: | Confirmed → Fix Committed |
Changed in linux (Ubuntu Zesty): | |
status: | Fix Committed → Fix Released |
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This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification- needed- zesty' to 'verification- done-zesty' . If the problem still exists, change the tag 'verification- needed- zesty' to 'verification- failed- zesty'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.
See https:/ /wiki.ubuntu. com/Testing/ EnableProposed for documentation how to enable and use -proposed. Thank you!