[Bug 1922712] Re: add metric for new glibc hwcaps
Matthias Klose
1922712 at bugs.launchpad.net
Thu Apr 15 16:54:45 UTC 2021
** Changed in: ubuntu-report (Ubuntu)
Status: Triaged => Fix Committed
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https://bugs.launchpad.net/bugs/1922712
Title:
add metric for new glibc hwcaps
Status in ubuntu-report package in Ubuntu:
Fix Committed
Bug description:
FFe: We would like to collect that information with 21.04 to get a
better view of supported hardware for the new hwcaps. The risk should
be minimal, only adding an extra flag, and the server side collecting
the data can handle that, according to Didier.
pull request at https://github.com/ubuntu/ubuntu-report/pull/34
we want to collect information which most recent hwcap is supported by
a machine. The result should be a string like "x86-64-v2",
"x86-64-v3", "x86-64-v4", "z13", "z14", "p9", "p10" depending on "ld-
linux --help" output. The string should be empty for architectures
without glibc hwcaps (currently armhf, arm64, i386, riscv64). The
string should be empty if no specific hwcaps is supported (e.g. on a
power8 machine). The string should be "" (empty), when trying to run
ld-linux on a release with glibc (<< 2.33). The string should be "-"
(dash) when not having any hwcaps mentioned.
Note that lexical sorting won't work for "p9", "p10".
if test -x /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2; then
lddynload=/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
elif test -x /lib/powerpc64le-linux-gnu/ld64.so.2; then
lddynload=/lib/powerpc64le-linux-gnu/ld64.so.2
elif test -x /lib/s390x-linux-gnu/ld64.so.1; then
lddynload=/lib/s390x-linux-gnu/ld64.so.1
fi
supported=
if [ -n "$lddynload" ]; then
$lddynload --help 2>&1 | awk '/^Subdirectories/,/^$/'
supported=$($lddynload --help 2>&1 | awk '/^Subdirectories/,/^$/' | awk '/supported/ {print $1}')
fi
Here, $supported has listed all supported hwcaps, not just the best
supported one.
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