** Description changed:
+ == SRU Justification ==
+ Ubuntu 16.04.03: perf tool does not count pm_run_inst_cmpl with rcode on
POWER9 DD2.0.
+
+ This is a regression introduced by mainline commit 8d911904f3ce. This
regression
+ is resolved by commit 8c218578fcbbbdb10416c8614658bf32e3bf1655.
+
+ Commit 8c218578fc is available in mailine as of 4.12-rc5.
+
+
+
---Problem Description---
Unable to count pm_run_inst_cmpl using perf tool on boston dd2.0
root@isvbos3:~# perf stat -e r500fa,r600f4 -a sleep 1
- Performance counter stats for 'system wide':
+ Performance counter stats for 'system wide':
- <not supported> r500fa
- 8,162,912 r600f4
+ <not supported> r500fa
+ 8,162,912 r600f4
- 1.001562716 seconds time elapsed
-
+ 1.001562716 seconds time elapsed
+
---uname output---
Linux isvbos3 4.10.0-29-generic #33~16.04.1-Ubuntu SMP Tue Jul 25 18:17:06
UTC 2017 ppc64le ppc64le ppc64le GNU/Linux
-
- Machine Type = p9 dd2.0
-
+
+ Machine Type = p9 dd2.0
+
---Steps to Reproduce---
- root@isvbos3:~# perf stat -e r500fa,r600f4 -a sleep 1
+ root@isvbos3:~# perf stat -e r500fa,r600f4 -a sleep 1
- Performance counter stats for 'system wide':
+ Performance counter stats for 'system wide':
- <not supported> r500fa
- 8,162,912 r600f4
+ <not supported> r500fa
+ 8,162,912 r600f4
- 1.001562716 seconds time elapsed
+ 1.001562716 seconds time elapsed
-
> Also we need this upstream fix 8c218578fcbbbdb10416c8614658bf32e3bf1655 in
> the distro.
$ git log 8c218578fcbbbdb10416c8614658 -1
commit 8c218578fcbbbdb10416c8614658bf32e3bf1655
Author: Madhavan Srinivasan <[email protected]>
Date: Fri May 26 13:38:27 2017 +0530
- powerpc/perf: Fix Power9 test_adder fields
-
- Commit 8d911904f3ce4 ('powerpc/perf: Add restrictions to PMC5 in power9
DD1')
- was added to restrict the use of PMC5 in Power9 DD1. Intention was to
disable
- the use of PMC5 using raw event code. But instead of updating the
- power9_isa207_pmu structure (used on DD1), the commit incorrectly updated
the
- power9_pmu structure. Fix it.
-
- Fixes: 8d911904f3ce ("powerpc/perf: Add restrictions to PMC5 in power9
DD1")
- Reported-by: Shriya <[email protected]>
- Signed-off-by: Madhavan Srinivasan <[email protected]>
- Tested-by: Shriya <[email protected]>
- Signed-off-by: Michael Ellerman <[email protected]>
+ powerpc/perf: Fix Power9 test_adder fields
+
+ Commit 8d911904f3ce4 ('powerpc/perf: Add restrictions to PMC5 in power9
DD1')
+ was added to restrict the use of PMC5 in Power9 DD1. Intention was to
disable
+ the use of PMC5 using raw event code. But instead of updating the
+ power9_isa207_pmu structure (used on DD1), the commit incorrectly updated
the
+ power9_pmu structure. Fix it.
+
+ Fixes: 8d911904f3ce ("powerpc/perf: Add restrictions to PMC5 in power9
DD1")
+ Reported-by: Shriya <[email protected]>
+ Signed-off-by: Madhavan Srinivasan <[email protected]>
+ Tested-by: Shriya <[email protected]>
+ Signed-off-by: Michael Ellerman <[email protected]>
$ git describe --contains 8c218578fcbbbdb
v4.12-rc7~9^2~13
- $
+ $
Commit 8c218578fc is available with kernel 4.12-rc7 afterwards.
I don't see this fix in the Ubuntu 16.04.3 Zesty tree (the P9 hwe
kernel, 4.10 based).
Need to mirror to Canonical to request they pull in:
8c218578fcbbbdb10416c8614658bf32e3bf1655
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https://bugs.launchpad.net/bugs/1709964
Title:
Ubuntu 16.04.03: perf tool does not count pm_run_inst_cmpl with rcode
on POWER9 DD2.0
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