Migrated to bugzilla: https://bugs.linaro.org/show_bug.cgi?id=559
** Bug watch added: Linaro Bug Tracking System #559
https://bugs.linaro.org/show_bug.cgi?id=559
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the history of oprofile/arm in Ubuntu is a bit weird:
in Precise it was removed since it was unmantained
(https://launchpad.net/ubuntu/precise/+source/oprofile/0.9.6-1.3ubuntu1)
in Quantal it was reintroduced but there's no armhf version of the
package (only i386/amd64 and armel -
** Changed in: linux-linaro-omap (Ubuntu)
Status: Confirmed = Fix Committed
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https://bugs.launchpad.net/bugs/702999
Title:
oprofile failure on panda (omap4)
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Hi Avik Sil,
I have tried the patches in
http://lists.infradead.org/pipermail/linux-arm-kernel/2011-March/045283.html
plus the patch in http://marc.info/?t=13056861411r=1w=2.
On natty over my A1 pandaboard, perf can work well, seems no need to remove
some read operations in
cti.h.
thanks,
Since this is a kernel bug, the fix will need to be applied separately
to each of the kernel trees for omap4. I'm told that this has been
staged for inclusion in linux-linaro-omap already.
** Package changed: oprofile (Ubuntu) = linux-linaro-omap (Ubuntu)
** Also affects: linux-ti-omap4
** Changed in: linux-linaro-omap (Ubuntu)
Assignee: Avik Sil (aviksil) = John Rigby (jcrigby)
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https://bugs.launchpad.net/bugs/702999
Title:
oprofile failure on panda (omap4)
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It seems that the patch in http://lists.infradead.org/pipermail/linux-
arm-kernel/2011-March/045283.html is going to fix the issue by enabling
pmu events for omap4, which are routed from CTI. The patch attached is a
version of the above with removal of some CTI register reads that cause
hang in
** Tags added: patch
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Title:
oprofile failure on panda (omap4)
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This appears in dmesg which points to a kernel issue.
hw perfevents: unable to reserve pmu
This discussion seems to imply CONFIG_PM related code not being active in the
kernel they test with, may be related to what we need to do in natty.
I could reproduce the bug on panda running Linaro natty with 2.6.37
kernel. It seems the profile data are not getting written to
$SESSION_DIR/samples directory.
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Changing back to oprofile as this test works correctly when running the
current natty kernel for panda on a maverick image.
** Package changed: linux-ti-omap4 (Ubuntu) = oprofile (Ubuntu)
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** Changed in: oprofile (Ubuntu)
Status: New = Confirmed
** Changed in: oprofile (Ubuntu)
Assignee: (unassigned) = Avik Sil (aviksil)
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** Summary changed:
- oprofile failure on armel
+ oprofile failure on panda (omap4)
** Tags removed: ubuntu-une
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https://bugs.launchpad.net/bugs/702999
Title:
oprofile failure on
Also retested on panda running Maverick, and passed there. This is a
regression on natty for panda only.
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Title:
oprofile failure on panda
The panda image currently uses 2.6.35-1101-omap4 kernel.
Seems to work fine with the Linaro 2.6.37 kernel, so looks like a bug in
the panda BSP kernel. Reassigning.
** Package changed: oprofile (Ubuntu) = linux-ti-omap4 (Ubuntu)
** Changed in: linux-ti-omap4 (Ubuntu)
Assignee: Avik Sil
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