On 9/9/23 9:11 AM, Jens Axboe wrote: > Hi, > > This adds support for IORING_OP_WAITID, which is an async variant of > the waitid(2) syscall. Rather than have a parent need to block waiting > on a child task state change, it can now simply get an async notication > when the requested state change has occured. > > Patches 1..4 are purely prep patches, and should not have functional > changes. They split out parts of do_wait() into __do_wait(), so that > the prepare-to-wait and sleep parts are contained within do_wait(). > > Patch 5 adds io_uring support. > > I wrote a few basic tests for this, which can be found in the > 'waitid' branch of liburing: > > https://git.kernel.dk/cgit/liburing/log/?h=waitid > > Also spun a custom kernel for someone to test it, and no issues reported > so far. Forget to mention that I also ran all the ltp testcases for any wait* syscall test, and everything still passes just fine. -- Jens Axboe
