** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1636647
Title:
perf stat interval display broken on 4.4.x
Status in l
** Attachment added: "lspci-vvnn.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1636647/+attachment/4768418/+files/lspci-vvnn.log
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** Attachment added: "dmesg.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1636647/+attachment/4768417/+files/dmesg.log
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** Attachment added: "version.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1636647/+attachment/4768409/+files/version.log
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https://bugs.launchpad.net/bugs/163
** Attachment added: "uname-a.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1636647/+attachment/4768408/+files/uname-a.log
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Public bug reported:
perf stat with interval display (-I flag) gives incorrect results
because the following perf/urgent patch has not been applied. (It's not
in upstream longterm 4.4 either.)
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-
stable.git/commit/tools/perf/util/stat.c?id=
Installed kernel and ran perf top -z while filtered on symbols
containing "crc32". I see the symbol crc32c_arm64_le_hw instead of
__crc32_le on hardware with CRC32 instruction support, so the change to
the kernel is working. Thank you.
** Tags removed: verification-needed-xenial
** Tags added: v
** Attachment added: "from ubuntu-bug --save=bug-report-logs linux"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1594455/+attachment/4687421/+files/bug-report-logs
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Public bug reported:
The following kernel config options are disabled in linux-
image-4.4.0-25-generic_4.4.0-25.44_arm64.deb and earlier. I ask that
these config options to be turned on or set to use as module so that a
kernel running on hardware that supports the instructions will use them.
These
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