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(parent: 2e1a255) | patch
powerpc/eeh: atomic_dec_if_positive() to update passthru count
authorGavin Shan <gwshan@linux.vnet.ibm.com>
Thu, 27 Aug 2015 05:58:27 +0000 (15:58 +1000)
committerMichael Ellerman <mpe@ellerman.id.au>
Thu, 15 Oct 2015 09:31:58 +0000 (20:31 +1100)
commit54f9a64a36e4fc041721a954e674797c2686ea4e
tree1e2e5df84aa1ab4282db37c4fa653fb04e506756tree | snapshot (tar.gz zip)
parent2e1a2556ebbbe7b53a05b721ac0d3d8ca9873cdbcommit | diff
powerpc/eeh: atomic_dec_if_positive() to update passthru count

No need to have two atomic opertions (update and fetch/check) when
decreasing PE's number of passed devices as one atomic operation
is enough.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/kernel/eeh.c diff | blob | blame | history