05a5f51ca5
Replace the lkml.org links with lore to better use a single source
that's more likely to stay available long-term.
Done by bash script:
cvt_lkml_to_lore ()
{
tmpfile=$(mktemp ./.cvt_links.XXXXXXX)
header=$(echo $1 | sed 's@/lkml/@/lkml/headers/@')
wget -qO - $header > $tmpfile
if [[ $? == 0 ]] ; then
link=$(grep -i '^Message-Id:' $tmpfile | head -1 | \
sed -r -e 's/^\s*Message-Id:\s*<\s*//' -e 's/\s*>\s*$//' -e 's@^@https://lore.kernel.org/r/@')
# echo "testlink: $link"
if [ -n "$link" ] ; then
wget -qO - $link > /dev/null
if [[ $? == 0 ]] ; then
echo $link
fi
fi
fi
rm -f $tmpfile
}
git grep -P -o "\bhttps?://(?:www.)?lkml.org/lkml[\/\w]+" $@ |
while read line ; do
echo $line
file=$(echo $line | cut -f1 -d':')
link=$(echo $line | cut -f2- -d':')
newlink=$(cvt_lkml_to_lore $link)
if [[ -n "$newlink" ]] ; then
sed -i -e "s#\b$link\b#$newlink#" $file
fi
done
Link: https://lore.kernel.org/patchwork/patch/1265849/#1462688
Signed-off-by: Joe Perches <joe@perches.com>
Link: https://lore.kernel.org/r/77cdb7f32cfb087955bfc3600b86c40bed5d4104.camel@perches.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
32 lines
1.4 KiB
ReStructuredText
32 lines
1.4 KiB
ReStructuredText
==================
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Control Groupstats
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==================
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Control Groupstats is inspired by the discussion at
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https://lore.kernel.org/r/461CF883.2030308@sw.ru and implements per cgroup statistics as
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suggested by Andrew Morton in https://lore.kernel.org/r/20070411114927.1277d7c9.akpm@linux-foundation.org.
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Per cgroup statistics infrastructure re-uses code from the taskstats
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interface. A new set of cgroup operations are registered with commands
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and attributes specific to cgroups. It should be very easy to
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extend per cgroup statistics, by adding members to the cgroupstats
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structure.
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The current model for cgroupstats is a pull, a push model (to post
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statistics on interesting events), should be very easy to add. Currently
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user space requests for statistics by passing the cgroup path.
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Statistics about the state of all the tasks in the cgroup is returned to
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user space.
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NOTE: We currently rely on delay accounting for extracting information
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about tasks blocked on I/O. If CONFIG_TASK_DELAY_ACCT is disabled, this
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information will not be available.
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To extract cgroup statistics a utility very similar to getdelays.c
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has been developed, the sample output of the utility is shown below::
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~/balbir/cgroupstats # ./getdelays -C "/sys/fs/cgroup/a"
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sleeping 1, blocked 0, running 1, stopped 0, uninterruptible 0
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~/balbir/cgroupstats # ./getdelays -C "/sys/fs/cgroup"
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sleeping 155, blocked 0, running 1, stopped 0, uninterruptible 2
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