On 5/9/20 10:52 AM, Dmitry Yakunin wrote: > This patch prepares infrastructure for matching sockets by cgroups. > Two helper functions are added for transformation between cgroup v2 ID > and pathname. Cgroup v2 cache is implemented as hash table indexed by ID. > This cache is needed for faster lookups of socket cgroup. > > v2: > - style fixes (David Ahern) > you missed my other comment about this set. Running this new command on a kernel without support should give the user a better error message than a string of Invalid arguments: $ uname -r 5.3.0-51-generic $ ss -a cgroup /sys/fs/cgroup/unified RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument
