nsg_get_nsgs - Returns a list NUMA Scheduling Groups (libnuma
int numnsgs );
Points to an array that receives the NUMA Scheduling Group
(NSG) identifiers. Specifies the maximum number of
nsgid_t entries in nsgidlist.
The nsg_get_nsgs() function returns a list of NSGs that
are active on the system in the buffer pointed to by
nsgidlist. The argument numnsgs specifies the number of
nsgid_t entries that can be accommodated in the buffer.
The list is terminated by a NULL entry.
The required size of the buffer can be obtained by first
calling nsg_get_nsgs() with a numnsgs set to zero. In
this case, the number of NSGs active on the system will be
reported in nsgidlist. As always, on a dynamically
changing system, the number of entries may be different by
the time it is used for the numnsgs argument to the second
The effective user ID of the calling process must be equal
to the value of nsg_perm.cuid or nsg_perm.uid in the associated
nsgid_ds structure; or the calling process must
have read permissions to each NSG. If the caller does not
have the proper permission, that NSG will not be reported
Success. However, if the errno is set to E2BIG, more NSGs
than numnsgs were available. Failure. In this case, errno
is set to indicate the error.
If the nsg_get_nsgs() function fails, it sets errno to the
following value for the specified condition: The nsgidlist
argument points to an invalid address.
Functions: nsg_attach_pid(3), nsg_get(3), nsg_get_pids(3),
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