On Mon, Mar 2, 2020 at 8:48 PM Kees Cook <keescook@xxxxxxxxxxxx> wrote: > > On Mon, Feb 24, 2020 at 09:16:17PM -0800, Kees Cook wrote: > > When CONFIG_DEBUG_INFO is enabled, the two kallsyms linking steps spend > > time collecting and writing the dwarf sections to the temporary output > > files. kallsyms does not need this information, and leaving it off > > halves their linking time. This is especially noticeable without > > CONFIG_DEBUG_INFO_REDUCED. The BTF linking stage, however, does still > > need those details. > > > > Refactor the BTF and kallsyms generation stages slightly for more > > regularized temporary names. Skip debug during kallsyms links. > > > > For a full debug info build with BTF, my link time goes from 1m06s to > > 0m54s, saving about 12 seconds, or 18%. > > > > Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx> > > Ping. Masahiro what do you think of this? It saves me a fair bit of time > on the link stage... I bet the BPF folks would be interested too. :) The build time improvement sound great. Could you please resubmit for bpf-next tree? So we can test and apply properly? Thanks!
