RFR: 8268014: Build failure on SUSE Linux Enterprise Server 11.4 (s390x) due to 'SYS_get_mempolicy' was not declared

[Matthias Baesken]

On Tue, 1 Jun 2021 08:11:44 GMT, Jie Fu <jiefu at openjdk.org> wrote:

> Hi all,
> 
> Please review the patch which fixes the build failure on SUSE Linux Enterprise Server 11.4 (s390x).
> 
> @dholmes-ora had reminded me of this bug in [1].
> But I missed the fact that ZGC is currently only built on x64 and aarch64.
> And I'm sorry for this breakage.
> 
> The sys_call numbers of get_mempolicy for different platforms are just copied from the libnuma source code [2].
> 
> Thanks.
> Best regards,
> Jie
> 
> 
> [1] https://github.com/openjdk/jdk/pull/4205#discussion_r639708293
> [2] https://github.com/numactl/numactl/blob/master/syscall.c

Hi, on newer s390x machines  (SLES15.2)  the value of  SYS_get_mempolicy  is  269 .
So a fix value per platform is not always correct.
However we have the define for SYS_get_mempolicy  on this SLES15.2 machine.

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PR: https://git.openjdk.java.net/jdk/pull/4277