On Sun, Feb 28, 2016 at 02:32:28PM +0000, Mathieu Desnoyers wrote: > The part of ABI I'm trying to express here is for discoverability > of available features by user-space. For instance, a kernel > could be configured with "CONFIG_RSEQ=n", and userspace should > not rely on the rseq fields of the thread-local ABI in that case. Per the just proposed interface; discoverability would end with: thread_local_abi_register(NULL, TLA_ENABLE_RSEQ, 0); failing. This would indicate your kernel does not support (or your glibc failed to register, depending on error code I suppose). Then your program can either fall back to full atomics or just bail. -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
