Re: compile error on linus git with ppc64

From: Benjamin Herrenschmidt
Date: Wed Jan 29 2014 - 03:47:03 EST


On Tue, 2014-01-28 at 19:59 -0800, David Rientjes wrote:
> On Tue, 28 Jan 2014, Jesse Brandeburg wrote:


I have a fix queued up in next, I'll ask Linus to pull tomorrow.

Ben.

> > fresh pull, commit d891ea23d5203e5c47439b2a174f86a00b356a6c - merge
> > ceph-client.
> >
> > I get a compile error:
> > jbrandeb@jbrandeb-pseries:~/git/linux> make -j12
> > scripts/kconfig/conf --silentoldconfig Kconfig
> > CHK include/config/kernel.release
> > WRAP arch/powerpc/include/generated/asm/clkdev.h
> > WRAP arch/powerpc/include/generated/asm/rwsem.h
> > WRAP arch/powerpc/include/generated/asm/trace_clock.h
> > WRAP arch/powerpc/include/generated/asm/preempt.h
> > WRAP arch/powerpc/include/generated/asm/hash.h
> > WRAP arch/powerpc/include/generated/asm/vtime.h
> > CHK include/generated/uapi/linux/version.h
> > UPD include/generated/uapi/linux/version.h
> > HOSTCC scripts/dtc/checks.o
> > HOSTCC scripts/dtc/data.o
> > SHIPPED scripts/dtc/dtc-lexer.lex.c
> > SHIPPED scripts/dtc/dtc-parser.tab.h
> > HOSTCC scripts/kallsyms
> > HOSTCC scripts/genksyms/genksyms.o
> > CC scripts/mod/empty.o
> > HOSTCC scripts/mod/mk_elfconfig
> > CC scripts/mod/devicetable-offsets.s
> > SHIPPED scripts/dtc/dtc-parser.tab.c
> > HOSTCC scripts/dtc/dtc.o
> > SHIPPED scripts/genksyms/lex.lex.c
> > SHIPPED scripts/genksyms/keywords.hash.c
> > HOSTCC scripts/pnmtologo
> > SHIPPED scripts/genksyms/parse.tab.h
> > SHIPPED scripts/genksyms/parse.tab.c
> > HOSTCC scripts/dtc/flattree.o
> > HOSTCC scripts/dtc/fstree.o
> > HOSTCC scripts/genksyms/lex.lex.o
> > HOSTCC scripts/genksyms/parse.tab.o
> > HOSTCC scripts/dtc/livetree.o
> > HOSTCC scripts/dtc/srcpos.o
> > HOSTCC scripts/dtc/treesource.o
> > HOSTCC scripts/conmakehash
> > HOSTCC scripts/bin2c
> > MKELF scripts/mod/elfconfig.h
> > HOSTCC scripts/dtc/util.o
> > HOSTCC scripts/mod/modpost.o
> > HOSTCC scripts/mod/sumversion.o
> > HOSTCC scripts/dtc/dtc-lexer.lex.o
> > HOSTLD scripts/genksyms/genksyms
> > HOSTCC scripts/dtc/dtc-parser.tab.o
> > GEN scripts/mod/devicetable-offsets.h
> > HOSTCC scripts/mod/file2alias.o
> > HOSTLD scripts/dtc/dtc
> > HOSTLD scripts/mod/modpost
> > UPD include/config/kernel.release
> > CHK include/generated/utsrelease.h
> > UPD include/generated/utsrelease.h
> > CC kernel/bounds.s
> > GEN include/generated/bounds.h
> > CC arch/powerpc/kernel/asm-offsets.s
> > In file included from include/linux/spinlock.h:81,
> > from include/linux/seqlock.h:35,
> > from include/linux/time.h:5,
> > from include/uapi/linux/timex.h:56,
> > from include/linux/timex.h:56,
> > from include/linux/sched.h:17,
> > from arch/powerpc/kernel/asm-offsets.c:17:
> > include/linux/spinlock_types.h:76: error: redefinition of typedef
> > âspinlock_tâ /home/jbrandeb/git/linux/arch/powerpc/include/asm/pgtable-ppc64.h:563:
> > error: previous declaration of âspinlock_tâ was here
>
> Confirmed, I saw this with ppc64_defconfig. It's due to b3084f4db3ae
> ("powerpc/thp: Fix crash on mremap").
>
>
> powerpc, spinlock: fix build error
>
> Build fails with
>
> include/linux/spinlock_types.h:76: error: redefinition of typedef âspinlock_tâ
> arch/powerpc/include/asm/pgtable-ppc64.h:563: error: previous declaration of âspinlock_tâ was here
>
> due to commit b3084f4db3ae ("powerpc/thp: Fix crash on mremap"). Remove
> the bogus typedef and include spinlock_types.h.
>
> Reported-by: Jesse Brandeburg <jesse.brandeburg@xxxxxxxxx>
> Signed-off-by: David Rientjes <rientjes@xxxxxxxxxx>
> ---
> arch/powerpc/include/asm/pgtable-ppc64.h | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/include/asm/pgtable-ppc64.h b/arch/powerpc/include/asm/pgtable-ppc64.h
> --- a/arch/powerpc/include/asm/pgtable-ppc64.h
> +++ b/arch/powerpc/include/asm/pgtable-ppc64.h
> @@ -365,6 +365,8 @@ void pgtable_cache_init(void);
> _PAGE_THP_HUGE)
>
> #ifndef __ASSEMBLY__
> +#include <linux/spinlock_types.h>
> +
> /*
> * The linux hugepage PMD now include the pmd entries followed by the address
> * to the stashed pgtable_t. The stashed pgtable_t contains the hpte bits.
> @@ -560,7 +562,6 @@ extern void pmdp_invalidate(struct vm_area_struct *vma, unsigned long address,
> pmd_t *pmdp);
>
> #define pmd_move_must_withdraw pmd_move_must_withdraw
> -typedef struct spinlock spinlock_t;
> static inline int pmd_move_must_withdraw(spinlock_t *new_pmd_ptl,
> spinlock_t *old_pmd_ptl)
> {


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