From: Alexei Starovoitov <a...@fb.com> Date: Tue, 30 May 2017 13:31:26 -0700
> Introduce tracking of bpf program stack depth in the verifier and use that > info to reduce bpf program stack consumption in the interpreter and x64 JIT. > Other JITs can take advantage of it as well in the future. > Most of the programs consume very little stack, so it's good optimization > in general and it's the first step toward bpf to bpf function calls. > > Also use internal opcode for bpf_tail_call() marking to make clear > that jmp|call|x opcode is not uapi and may be used for actual > indirect call opcode in the future. Series applied, thanks Alexei.
