[LTP] controllers/memcg_stress: Does not work correctly?

[TAKAHASHI Tetsuya]

Hello.

About testcase "controllers/memcg_stress", I have a question.

This test calculates a memory size to use on a test as follows.
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- testcases/kernel/controllers/memcg/stress/memcg_stress_test.sh

  mem_free=`cat /proc/meminfo | grep MemFree | awk '{ print $2 }'`
  swap_free=`cat /proc/meminfo | grep SwapFree | awk '{ print $2 }'`

  mem=$(( $mem_free + $swap_free / 2 ))
  mem=$(( mem / 1024 ))
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In the case of this calculation, Lack of memory occurs when this test runs in "swap off" systems.

As for the calculation of the memory size to use for a test, may the following be right?
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- testcases/kernel/controllers/memcg/stress/memcg_stress_test.sh

  mem_free=`cat /proc/meminfo | grep MemFree | awk '{ print $2 }'`
  swap_free=`cat /proc/meminfo | grep SwapFree | awk '{ print $2 }'`

  mem=$(( ($mem_free + $swap_free) / 2 ))
  mem=$(( mem / 1024 ))
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Best regards.