On 01/29/2015 03:09 PM, Lijinyue wrote:
> Since kernel commit c4c27fbdda4e8ba87806c415b6d15266b07bce4b and
> 14a40ffccd6163bbcd1d6f32b28a88ffe6149fc6, disallow attaching kthreadd
> or threads with flag 0x04000000 to cgroups.
> (Thread flag 0x04000000 is representation of PF_THREAD_BOUND which
> had been replaced with PF_NO_SETAFFINITY on kernel 3.9 and later.)
>
> The following testcases in cgroup_fj_testcases.sh will encounter
> "echo: write error: Invalid argument" error while attaching tasks to the
> cgroup.
> function 1 1 1 1 1 3 1 1 1
> function 1 1 1 1 1 3 2 1 1
> function 1 1 1 1 1 3 4 1 1
>
> Error messages as follows:
> /opt/ltp/testcases/bin/cgroup_fj_utility.sh: line 295: echo: write error:
> Invalid argument
> /opt/ltp/testcases/bin/cgroup_fj_utility.sh: line 497: 10571 Killed
> $TESTROOT/cgroup_fj_proc
> /opt/ltp/testcases/bin/cgroup_fj_utility.sh: line 497: 10573 Killed
> $TESTROOT/cgroup_fj_proc
> cgroup_test_fj 1 TFAIL : ltpapicmd.c:190: case98(function 1 1 1 1 1 3 1
> 1 1) FAIL
> /opt/ltp/testcases/bin/cgroup_fj_utility.sh: line 295: echo: write error:
> Invalid argument
> /opt/ltp/testcases/bin/cgroup_fj_utility.sh: line 497: 10624 Killed
> $TESTROOT/cgroup_fj_proc
> /opt/ltp/testcases/bin/cgroup_fj_utility.sh: line 497: 10626 Killed
> $TESTROOT/cgroup_fj_proc
> cgroup_test_fj 1 TFAIL : ltpapicmd.c:190: case99(function 1 1 1 1 1 3 2
> 1 1) FAIL
> /opt/ltp/testcases/bin/cgroup_fj_utility.sh: line 295: echo: write error:
> Invalid argument
> /opt/ltp/testcases/bin/cgroup_fj_utility.sh: line 497: 10677 Killed
> $TESTROOT/cgroup_fj_proc
> /opt/ltp/testcases/bin/cgroup_fj_utility.sh: line 497: 10679 Killed
> $TESTROOT/cgroup_fj_proc
> cgroup_test_fj 1 TFAIL : ltpapicmd.c:190: case100(function 1 1 1
> 1 1 3 4 1 1) FAIL
>
> So, we kindly avoid to attach these threads in cgroup tests.
>
> Signed-off-by: Li Jinyue <lijin...@huawei.com>
Acked-by: Wanlong Gao <gaowanl...@cn.fujitsu.com>
> ---
> .../kernel/controllers/cgroup_fj/cgroup_fj_function.sh | 13
> +++++++++++++
> 1 file changed, 13 insertions(+)
>
> diff --git a/testcases/kernel/controllers/cgroup_fj/cgroup_fj_function.sh
> b/testcases/kernel/controllers/cgroup_fj/cgroup_fj_function.sh
> index 30476bd..9bfaeb7 100755
> --- a/testcases/kernel/controllers/cgroup_fj/cgroup_fj_function.sh
> +++ b/testcases/kernel/controllers/cgroup_fj/cgroup_fj_function.sh
> @@ -186,6 +186,19 @@ case $attach_operation in
> do
> cur_pid=`sed -n "$i""p" $TMPFILE`
> if [ -e /proc/$cur_pid/ ];then
> + #For kernel 3.4.0 and higher, kernel disallow attaching
> kthreadd or
> + #threads with flag 0x04000000 to cgroups.
> + #kernel commit:
> + #c4c27fbdda4e8ba87806c415b6d15266b07bce4b
> + #14a40ffccd6163bbcd1d6f32b28a88ffe6149fc6
> + tst_kvercmp 3 4 0
> + if [ $? -ne 0 ]; then
> + thread_flag=$(awk '{print $9}'
> /proc/$cur_pid/stat)
> + thread_name=$(awk '{print $2}'
> /proc/$cur_pid/status | head -1)
> + if [ "$thread_name" = "kthreadd" -o
> $((${thread_flag}&0x04000000)) -ne 0 ];then
> + continue
> + fi
> + fi
> do_echo 1 1 "$cur_pid" /dev/cgroup/subgroup_1/tasks
> fi
> done
> -- 1.8.2.2
>
>
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look and join the conversation now. http://goparallel.sourceforge.net/
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