Messages in this thread | | | Date | Tue, 6 Jan 2009 14:34:42 +0100 | From | Sam Ravnborg <> | Subject | Re: ftrace breaks sparc64 build |
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On Tue, Jan 06, 2009 at 11:35:43AM +0000, Al Viro wrote: > On Tue, Jan 06, 2009 at 07:53:04AM +0000, Jan Beulich wrote: > > > The __crc_... reference is definitely bogus - none should survive with the > > new .c->.o rule. Could you find out what object file they originate from? > > So can you, by use of arcane tool known as "grep"... It's in kernel/softirq.c > and that's genksyms parser being fucked in head. Look for TYPEOF_KEYW > in parse.y and you'll see. Especially amusing part is a kludge from > commit a89a0a2354ae666612968e254d650bfd04f11eb6...
Any feedback on what to do to make it better? Never used typeof myself so I do not know the exact syntax.
> > > The others look like a tools side behavioral difference, as I never saw any > > such. Is this problem sparc32-specific (I tested x86 and ia64 only)? What's > > the binutils version used? > > 2.18.50.0.6. > > And no, it's not tools side. What it is, AFAICT, is that sparc32 has > LDFLAGS_vmlinux = -r, which leaves a metric arseload of relocs that > wouldn't have survived into vmlinux otherwise. Look at .rela__ksymtab > in .tmp_vmlinux1, for example...
The use of -r is to support the btfixup magic. I have been thinking of moving the btfixup phase so it happens _before_ the final link of vmlinux. This should help us here.
But I never managed to really understand what the btfixup thing is all about and has then been sidetracked by funnier stuff.
Sam
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