[Feature] Use NPEBS CPU_CLK_UNHALTED event for precise cycles on Goldmont

Bug #1591825 reported by XiongZhang
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
intel
Fix Released
Undecided
Unassigned
linux (Ubuntu)
Fix Released
Undecided
Unassigned

Bug Description

CPU architects are recommending to use CPU_CLK_UNHALTED .THREAD+ NPEBS for the cycles / :pp events on Goldmont (and not implement the :ppp variant we added for big core)

HW: Harrisonvile

Upstream status:
v4.7 kernel support this with:
8b92c3a perf/x86/intel: Add Goldmont CPU support

Revision history for this message
Leann Ogasawara (leannogasawara) wrote :

The v4.8 based kernel has been uploaded to the Yakkety 16.10 archive. I'm setting this to Fix Released.

$ git describe --contains 8b92c3a
v4.7-rc1~191^2~30

$ git show 8b92c3a
commit 8b92c3a78d40fb220dc5ab122e3274d1b126bfbb
Author: Kan Liang <email address hidden>
Date: Fri Apr 15 00:42:47 2016 -0700

    perf/x86/intel: Add Goldmont CPU support

information type: Proprietary → Public
Changed in linux (Ubuntu):
status: New → Fix Released
Changed in intel:
status: New → Fix Released
Revision history for this message
Leann Ogasawara (leannogasawara) wrote :

Hrm, actually, is this the right patch for this bug report?

Revision history for this message
Leann Ogasawara (leannogasawara) wrote :

disregard comment #2

Revision history for this message
XiongZhang (xiong-y-zhang) wrote :

Yes, it is. Please mark it as fix released.

To post a comment you must log in.
This report contains Public information  
Everyone can see this information.

Other bug subscribers

Remote bug watches

Bug watches keep track of this bug in other bug trackers.