Hi Shubham, On 03/28/2017 10:49 PM, Shubham Bansal wrote: [...]
Do you have any document to understand the working of tail calls? I looked at your presentations but it seemed confusing to me. Anything simple would be great, just about the tail calls. I don't think I need examples, I can get them from your presentations. I just need a very general idea. May be you know the code in kernel where it is implemented.
Sure, it's in __bpf_prog_run(), see the JMP_TAIL_CALL (kernel/bpf/core.c +1019). That's effectively what JITs implement. [1] page 3 has a high-level description as well, hope that helps. Thanks, Daniel [1] http://www.netdevconf.org/1.1/proceedings/papers/On-getting-tc-classifier-fully-programmable-with-cls-bpf.pdf
