On Thu, Sep 16, 2021 at 04:20:44PM -0500, Mike Christie wrote: > The vhost layer has similar requirements as io_uring where its worker > threads need to access the userspace thread's memory, want to inherit the > parents's cgroups and namespaces, and be checked against the parent's > RLIMITs. Right now, the vhost layer uses the kthread API which has > kthread_use_mm for mem access, and those threads can use > cgroup_attach_task_all for v1 cgroups, but there are no helpers for the > other items. > > This adds a helper to clone a process so we can inherit everything we > want in one call. It's a more generic version of create_io_thread which > will be used by the vhost layer and io_uring in later patches in this set. > > This patch also exports __set_task_comm and wake_up_new_task which is > needed by modules to use the new helper. io_uring calls these functions > already but its always built into the kernel so was not needed before. Can you build proper APIs please? e.g. the set_task_comm users generally want a printf-like varargs caling conventions. I'd also much prefer to hide as much as possible in the actual helper. That is build a helper that gets the name, a flag to ignore the singals etc instead of exporting all these random low-level helpers. _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
