| commit | 3910a7f485e1222de2176ef5bf3a1d8de3152920 | [log] [tgz] |
|---|---|---|
| author | Michael Ellerman <mpe@ellerman.id.au> | Fri Apr 29 23:25:27 2016 +1000 |
| committer | Michael Ellerman <mpe@ellerman.id.au> | Sun May 01 18:32:16 2016 +1000 |
| tree | 66de016468eb80717dbe0fc4a3d9b0081031b98c | |
| parent | 4bece39b503c2340de154c82bf6d928e72d74d4e [diff] |
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>