On Thu, 30 Jan 2025 20:40:25 +0000 Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx> wrote: > If you wish to utilise a pidfd interface to refer to the current process or > thread it is rather cumbersome, requiring something like: > > int pidfd = pidfd_open(getpid(), 0 or PIDFD_THREAD); > > ... > > close(pidfd); > > Or the equivalent call opening /proc/self. It is more convenient to use a > sentinel value to indicate to an interface that accepts a pidfd that we > simply wish to refer to the current process thread. > The above code sequence doesn't seem at all onerous. I'm not understanding why it's worth altering the kernel to permit this little shortcut?
