** Changed in: linaro-ubuntu
Status: Confirmed => Won't Fix
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Title:
Perf test fails on Pandaboard (3.4 TILT)
To manage notifications abou
I found the magic sauce for getting the PMU event counters working in
recent upstream code. On the 4460 the EMU clock has to be forced on. A
patch for this, and for missing PMU/CTI interrupt mods is being applied
to our 3.4 branch now. With this it will be possible to build a kernel
with hardware
I am wondering the same thing as Joseph (joemp) in the #10 comment. On
my Pandaboard, I see that my kernel is configured correctly, and hw perf
events come up in dmesg, like so...
$ uname -a
Linux pandaboard01 3.2.0-1419-omap4 #26-Ubuntu SMP PREEMPT Wed Sep 12 14:32:40
UTC 2012 armv7l armv7l armv
I mean, I can't find how they were disabled. Looking at the kernel
config, profiling and hw perf monitors seems to be enabled. Was some
bit of code commented out somewhere in the kernel/drivers?
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I'm afraid we don't use DS-5 on our side... if you know a Lukas Snetler
in ARM it might be worth having a chat though.
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Title:
Perf test fails on
I understand why the performance counters are disabled, but I would like
to re-enable them for use with DS-5 streamline. How can I enable them?
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T
What Andy said. We chose timer mode in lieu of enabling hardware
counters, since the hardware is broken.
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Title:
Perf test fails on Pandaboard (
Well perf should work itself OK using the fallback timer-based method,
it's specifically this -e mode.
The hardware counters are in there and do stuff, the problem is (IIRC
overflow) interrupts are prone to get lost, distorting the numbers to
uselessness, and that problem is in the ARM core and la
any way to workaround it?
or shall we just say "it's broken" and mark it as "won't fix"?
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Title:
Perf test fails on Pandaboard (3.4 TILT)
To ma
Dave said that because we disable hw counters due to errata in the hw,
perf -e will fail.
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Title:
Perf test fails on Pandaboard (3.4 TILT)
To ma
affects ubuntu ti-omap4 too
** Also affects: linux-ti-omap4 (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux-ti-omap4 (Ubuntu)
Status: New => Confirmed
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h
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