Addresses BenH comments with one exception: I've left the
IOMMU_POOL_HASH as is, so that powerpc can tailor it to their
convenience.
I've not heard back from the IB folks, but I'm going to make
a judgement call here and go with the spin_lock. *If* they
report some significant benefit from the trylock, probably
need to revisit this (and then probably start by re-exmaining
the hash function to avoid collisions, before resorting to
trylock).
Sowmini Varadhan (3):
Break up monolithic iommu table/lock into finer graularity pools and
lock
Make sparc64 use scalable lib/iommu-common.c functions
Make LDC use common iommu poll management functions
arch/sparc/include/asm/iommu_64.h | 7 +-
arch/sparc/kernel/iommu.c | 171 +++++++--------------------
arch/sparc/kernel/iommu_common.h | 8 --
arch/sparc/kernel/ldc.c | 153 ++++++++++--------------
arch/sparc/kernel/pci_sun4v.c | 181 +++++++++++++----------------
include/linux/iommu-common.h | 48 ++++++++
lib/Makefile | 2 +-
lib/iommu-common.c | 233 +++++++++++++++++++++++++++++++++++++
8 files changed, 472 insertions(+), 331 deletions(-)
create mode 100644 include/linux/iommu-common.h
create mode 100644 lib/iommu-common.c
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