pan xinhui 10d8b1480e powerpc: Use BUILD_BUG_ON_MSG() for unsupported {cmp}xchg sizes ...

__xchg_called_with_bad_pointer() can't tell us which code uses {cmp}xchg
with an unsupported size, and no error is reported until the link stage.

To make such problems easier to debug, use BUILD_BUG_ON_MSG() instead.

Signed-off-by: pan xinhui <xinhui.pan@linux.vnet.ibm.com>
[mpe: Tweak change log wording & add relaxed/acquire]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

fixup

2016-02-24 20:08:48 +11:00

9.3 KiB

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