selftests/resctrl: Commonize the signal handler register/unregister for all tests

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After creating a child process with fork() in CAT test, if a signal such
as SIGINT is received, the parent process will be terminated immediately,
and therefore the child process will not be killed and also resctrlfs is
not unmounted.

There is a signal handler registered in CMT/MBM/MBA tests, which kills
child process, unmount resctrlfs, cleanups result files, etc., if a
signal such as SIGINT is received.

Commonize the signal handler registered for CMT/MBM/MBA tests and
reuse it in CAT.

To reuse the signal handler to kill child process use global bm_pid
instead of local bm_pid.

Also, since the MBA/MBA/CMT/CAT are run in order, unregister the signal
handler at the end of each test so that the signal handler cannot be
inherited by other tests.

Reviewed-by: Ilpo Jarvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

...

This commit is contained in:

Shaopeng Tan 2023-04-13 16:22:58 +09:00 • committed by Shuah Khan

parent 39e34ddc38

commit 73c55fa5ab

4 changed files with 58 additions and 33 deletions

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9

tools/testing/selftests/resctrl/cat_test.c

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14

tools/testing/selftests/resctrl/fill_buf.c

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2

tools/testing/selftests/resctrl/resctrl.h

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66

tools/testing/selftests/resctrl/resctrl_val.c

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