34-rc1-git3 build failure with CGROUP_MEM_RES_CTLR_SWAP=y
Michael Ellerman
michael at ellerman.id.au
Mon Mar 15 12:04:13 EST 2010
On Sun, 2010-03-14 at 16:18 +0530, Sachin Sant wrote:
> On a PowerPC box, latest 34-rc1 git(d89b218b8...) fails to build
> with CGROUPS_MEM_RES_CTRL_SWAP=y.
>
> LD init/built-in.o
> LD .tmp_vmlinux1
> mm/built-in.o: In function __xchg:
> arch/powerpc/include/asm/system.h:331: undefined reference to .__xchg_called_with_bad_pointer
> mm/built-in.o: In function __cmpxchg:
> arch/powerpc/include/asm/system.h:474: undefined reference to .__cmpxchg_called_with_bad_pointer
> make: *** [.tmp_vmlinux1] Error 1
>
> The code in question was added via commit 024914477e...
>
> memcg: move charges of anonymous swap
struct swap_cgroup
{
unsigned short id;
};
+unsigned short swap_cgroup_cmpxchg(swp_entry_t ent,
+ unsigned short old, unsigned short new)
+{
...
+ struct swap_cgroup *sc;
...
+ if (cmpxchg(&sc->id, old, new) == old)
On powerpc cmpxchg() currently only handles u32 & u64.
cheers
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 197 bytes
Desc: This is a digitally signed message part
URL: <http://lists.ozlabs.org/pipermail/linuxppc-dev/attachments/20100315/8e537396/attachment.pgp>
More information about the Linuxppc-dev
mailing list