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Date: Mon, 13 Nov 2017 15:51:40 -0800 From: Andi Kleen <ak@...ux.intel.com> To: Linus Torvalds <torvalds@...ux-foundation.org> Cc: Fengguang Wu <fengguang.wu@...el.com>, Jeff Kirsher <jeffrey.t.kirsher@...el.com>, Network Development <netdev@...r.kernel.org>, "David S. Miller" <davem@...emloft.net>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, intel-wired-lan@...ts.osuosl.org, Michal Marek <mmarek@...e.cz>, Sam Ravnborg <sam@...nborg.org>, Dirk Gouders <dirk@...ders.net>, Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>, kbuild test robot <lkp@...el.com>, "Zhang, Rui" <rui.zhang@...el.com>, "Lu, Aaron" <aaron.lu@...el.com>, "H.J. Lu" <hjl.tools@...il.com> Subject: Re: CONFIG_DEBUG_INFO_SPLIT impacts on faddr2line > I wonder if there is some way to use the split format for the > intermediate files, but then for the very final link bring them all in > and make the end result be a traditional single binary. I'm not > talking the separate "dwp" package that packs multiple dwo files into > one, but to actually link them all in at the one. > > Sure, it would lose some of the advantage, but I think a large portion > of the -gsplit-dwarf advantage is about the intermediate state. No? Not sure it's worth to do complicated workarounds. I assume it will be not that difficult to fix binutils (after all gdb works), and disabling the option is a reasonable workaround. > > I tried to google for it, but couldn't find anything. But apparently > elfutils doesn't support dwo files either. It seems mainly the linker > and gdb itself that supports it. The original design document is https://gcc.gnu.org/wiki/DebugFission -Andi
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