RFR: 8241423: NUMA APIs fail to work in dockers due to dependent syscalls are disabled by default

[Jie Fu]

Hi all,

NUMA APIs fail to work in dockers due to dependent syscalls are disabled by default.

NUMA APIs depend on several syscalls.
E.g., `get_mempolicy` is required for `numa_get_membind` and `numa_get_interleave_mask`.
But these dependent syscalls can be unsupported for various reasons.
Especially in dockers, `get_mempolicy` is not allowed with the default configuration [1].
So it's necessary to check whether the syscalls are available.

In theory, all NUMA-related syscalls should be checked.
But it seems hard to do so because some of them like `mbind` would cause unexpected side effects.
So only `get_mempolicy` is checked in the fix, which is already enough for all the default dockers.
And this can be refined in the future if it turns out to be a problem.

Thanks.
Best regards,
Jie

[1] https://docs.docker.com/engine/security/seccomp/

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Commit messages:
 - 8241423: NUMA APIs fail to work in dockers due to dependent syscalls are disabled by default

Changes: https://git.openjdk.java.net/jdk/pull/4205/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4205&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8241423
  Stats: 18 lines in 2 files changed: 17 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4205.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4205/head:pull/4205

PR: https://git.openjdk.java.net/jdk/pull/4205