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authorMichael Ellerman <mpe@ellerman.id.au>2016-04-29 23:25:27 +1000
committerMichael Ellerman <mpe@ellerman.id.au>2016-05-01 18:32:16 +1000
commit3910a7f485e1222de2176ef5bf3a1d8de3152920 (patch)
tree66de016468eb80717dbe0fc4a3d9b0081031b98c /arch/powerpc/mm/pgtable_64.c
parent4bece39b503c2340de154c82bf6d928e72d74d4e (diff)
downloadlinux-3910a7f485e1222de2176ef5bf3a1d8de3152920.tar.gz
powerpc/mm: Add pte_xchg() helper
We have five locations in 64-bit hash MMU code that do a cmpxchg() of a PTE. Currently doing it inline OK, but in a future patch we will be converting the PTEs to __be64 in some configs. In that case we will need casts at every cmpxchg() site in order to keep sparse happy. So move the logic into a helper, this is a reasonably nice cleanup on its own. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm/pgtable_64.c')
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