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| author | Stefan Roscher <ossrosch@linux.vnet.ibm.com> | 2009-05-13 16:52:43 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2009-05-13 16:52:43 -0700 |
| commit | 1988d1fa1a9d642c5714a6afc9775fba0627f3ed (patch) | |
| tree | 9eeca20f2831d8ebe32795838c1190f1ecc01017 /drivers/infiniband/hw/ehca/hcp_phyp.c | |
| parent | c94f156f63c835ffc02b686f9d4238b106f31a5d (diff) | |
| download | blackbird-op-linux-1988d1fa1a9d642c5714a6afc9775fba0627f3ed.tar.gz blackbird-op-linux-1988d1fa1a9d642c5714a6afc9775fba0627f3ed.zip | |
IB/ehca: Remove unnecessary memory operations for userspace queue pairs
The queue map for flush completion circumvention is only used for
kernel space queue pairs. This patch skips the allocation of the
queue maps in case the QP is created for userspace. In addition, this
patch does not iomap the galpas for kernel usage if the queue pair is
only used in userspace. These changes will improve the performance of
creation of userspace queue pairs.
Signed-off-by: Stefan Roscher <stefan.roscher@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ehca/hcp_phyp.c')
| -rw-r--r-- | drivers/infiniband/hw/ehca/hcp_phyp.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/infiniband/hw/ehca/hcp_phyp.c b/drivers/infiniband/hw/ehca/hcp_phyp.c index 214821095cb1..b3e0e72e8a73 100644 --- a/drivers/infiniband/hw/ehca/hcp_phyp.c +++ b/drivers/infiniband/hw/ehca/hcp_phyp.c @@ -54,12 +54,15 @@ int hcall_unmap_page(u64 mapaddr) return 0; } -int hcp_galpas_ctor(struct h_galpas *galpas, +int hcp_galpas_ctor(struct h_galpas *galpas, int is_user, u64 paddr_kernel, u64 paddr_user) { - int ret = hcall_map_page(paddr_kernel, &galpas->kernel.fw_handle); - if (ret) - return ret; + if (!is_user) { + int ret = hcall_map_page(paddr_kernel, &galpas->kernel.fw_handle); + if (ret) + return ret; + } else + galpas->kernel.fw_handle = 0; galpas->user.fw_handle = paddr_user; |
