https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111024
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Tobias Burnus <[email protected]>: https://gcc.gnu.org/g:8f3c4517b1fff965f2bdedcf376dcfd91cda422b commit r14-3287-g8f3c4517b1fff965f2bdedcf376dcfd91cda422b Author: Tobias Burnus <[email protected]> Date: Thu Aug 17 15:20:55 2023 +0200 libgomp: call numa_available first when using libnuma The documentation requires that numa_available() is called and only when successful, other libnuma function may be called. Internally, it does a syscall to get_mempolicy with flag=0 (which would return the default policy if mode were not NULL). If this returns -1 (and not 0) and errno == ENOSYS, the Linux kernel does not have the get_mempolicy syscall function; if so, numa_available() returns -1 (otherwise: 0). libgomp/ PR libgomp/111024 * allocator.c (gomp_init_libnuma): Call numa_available; if not available or not returning 0, disable libnuma usage.
