linux/tools/testing/selftests/mm/write_hugetlb_memory.sh

#!/bin/sh
# SPDX-License-Identifier: GPL-2.0

set -e

size=$1
populate=$2
write=$3
cgroup=$4
path=$5
method=$6
private=$7
want_sleep=$8
reserve=$9

echo "Putting task in cgroup '$cgroup'"
echo $$ > ${cgroup_path:-/dev/cgroup/memory}/"$cgroup"/cgroup.procs

echo "Method is $method"

set +e
./write_to_hugetlbfs -p "$path" -s "$size" "$write" "$populate" -m "$method" \
      "$private" "$want_sleep" "$reserve"
hugetlb_cgroup: add hugetlb_cgroup reservation tests The tests use both shared and private mapped hugetlb memory, and monitors the hugetlb usage counter as well as the hugetlb reservation counter. They test different configurations such as hugetlb memory usage via hugetlbfs, or MAP_HUGETLB, or shmget/shmat, and with and without MAP_POPULATE. Also add test for hugetlb reservation reparenting, since this is a subtle issue. Signed-off-by: Mina Almasry <almasrymina@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Tested-by: Sandipan Das <sandipan@linux.ibm.com> [powerpc64] Acked-by: Mike Kravetz <mike.kravetz@oracle.com> Cc: Sandipan Das <sandipan@linux.ibm.com> Cc: David Rientjes <rientjes@google.com> Cc: Greg Thelen <gthelen@google.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/20200211213128.73302-8-almasrymina@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 2020-04-02 12:11:38 +08:00			`#!/bin/sh`
			`# SPDX-License-Identifier: GPL-2.0`

			`set -e`

			`size=$1`
			`populate=$2`
			`write=$3`
			`cgroup=$4`
			`path=$5`
			`method=$6`
			`private=$7`
			`want_sleep=$8`
			`reserve=$9`

			`echo "Putting task in cgroup '$cgroup'"`
selftests/vm: make charge_reserved_hugetlb.sh work with existing cgroup setting The hugetlb cgroup reservation test charge_reserved_hugetlb.sh assume that no cgroup filesystems are mounted before running the test. That is not true in many cases. As a result, the test fails to run. Fix that by querying the current cgroup mount setting and using the existing cgroup setup instead before attempting to freshly mount a cgroup filesystem. Similar change is also made for hugetlb_reparenting_test.sh as well, though it still has problem if cgroup v2 isn't used. The patched test scripts were run on a centos 8 based system to verify that they ran properly. Link: https://lkml.kernel.org/r/20220106201359.1646575-1-longman@redhat.com Fixes: 29750f71a9b4 ("hugetlb_cgroup: add hugetlb_cgroup reservation tests") Signed-off-by: Waiman Long <longman@redhat.com> Acked-by: Mina Almasry <almasrymina@google.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Mike Kravetz <mike.kravetz@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 2022-01-15 06:07:58 +08:00			`echo $$ > ${cgroup_path:-/dev/cgroup/memory}/"$cgroup"/cgroup.procs`
hugetlb_cgroup: add hugetlb_cgroup reservation tests The tests use both shared and private mapped hugetlb memory, and monitors the hugetlb usage counter as well as the hugetlb reservation counter. They test different configurations such as hugetlb memory usage via hugetlbfs, or MAP_HUGETLB, or shmget/shmat, and with and without MAP_POPULATE. Also add test for hugetlb reservation reparenting, since this is a subtle issue. Signed-off-by: Mina Almasry <almasrymina@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Tested-by: Sandipan Das <sandipan@linux.ibm.com> [powerpc64] Acked-by: Mike Kravetz <mike.kravetz@oracle.com> Cc: Sandipan Das <sandipan@linux.ibm.com> Cc: David Rientjes <rientjes@google.com> Cc: Greg Thelen <gthelen@google.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/20200211213128.73302-8-almasrymina@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 2020-04-02 12:11:38 +08:00
			`echo "Method is $method"`

			`set +e`
			`./write_to_hugetlbfs -p "$path" -s "$size" "$write" "$populate" -m "$method" \`
			`"$private" "$want_sleep" "$reserve"`