[$] Improving C-library scalability with restartable sequences

The Linux kernel has supported restartablesequences (sometimes referred to as "RSEQ") since 2018, but it remainsa bit of a niche feature, mostly useful to performance-oriented developerswho do not mind writing assembly code. According to Mathieu Desnoyers, the developerbehind the kernel's implementation of restartable sequences, this featurecan be applicable to a much wider range of performance-sensitive code withproper library support. He came to the 2023 GNU Tools Cauldron topresent the case for use of restartable sequences within the GNU C Library(glibc).