On Fri, Mar 01, 2019 at 06:58:32PM +0300, Alexey Budankov wrote: SNIP
> > +static size_t record__process_comp_header(void *record, size_t increment) > +{ > + struct compressed_event *event = record; > + size_t size = sizeof(struct compressed_event); > + > + if (increment) { > + event->header.size += increment; > + return increment; > + } else { > + event->header.type = PERF_RECORD_COMPRESSED; > + event->header.size = size; > + return size; > + } > +} > + > +static size_t record__zstd_compress(void *data, void *dst, size_t dst_size, we use the <name>__ to mark 'struct' related function, which supposed to be the first argument.. IMO zstd_compress will be fine in here jirka