diff options
| author | VSR Burru | 2017-03-10 02:03:24 +0100 |
|---|---|---|
| committer | David S. Miller | 2017-03-13 07:17:00 +0100 |
| commit | b3ca9af0fb65098dd2afecca6831c361a585f37f (patch) | |
| tree | e737e5e34e64ef0d9f428aeb14c7acf615cdf36f /drivers/net/ethernet/cavium/liquidio/request_manager.c | |
| parent | Merge branch 'netvsc-fix-module-removal-hangs' (diff) | |
| download | kernel-qcow2-linux-b3ca9af0fb65098dd2afecca6831c361a585f37f.tar.gz kernel-qcow2-linux-b3ca9af0fb65098dd2afecca6831c361a585f37f.tar.xz kernel-qcow2-linux-b3ca9af0fb65098dd2afecca6831c361a585f37f.zip | |
liquidio: optimize DMA in NUMA systems
Optimize DMA in NUMA systems by allocating memory from NUMA node that NIC
is plugged in to; DMA will no longer cross NUMA nodes. If NIC IRQs are
pinned to a local CPU, that CPU's access to the DMA'd data is also
optimized.
Signed-off-by: VSR Burru <veerasenareddy.burru@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com>
Signed-off-by: Satanand Burla <satananda.burla@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/cavium/liquidio/request_manager.c')
| -rw-r--r-- | drivers/net/ethernet/cavium/liquidio/request_manager.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/drivers/net/ethernet/cavium/liquidio/request_manager.c b/drivers/net/ethernet/cavium/liquidio/request_manager.c index 707bc15adec6..261f448f9de2 100644 --- a/drivers/net/ethernet/cavium/liquidio/request_manager.c +++ b/drivers/net/ethernet/cavium/liquidio/request_manager.c @@ -62,8 +62,7 @@ int octeon_init_instr_queue(struct octeon_device *oct, u32 iq_no = (u32)txpciq.s.q_no; u32 q_size; struct cavium_wq *db_wq; - int orig_node = dev_to_node(&oct->pci_dev->dev); - int numa_node = cpu_to_node(iq_no % num_online_cpus()); + int numa_node = dev_to_node(&oct->pci_dev->dev); if (OCTEON_CN6XXX(oct)) conf = &(CFG_GET_IQ_CFG(CHIP_CONF(oct, cn6xxx))); @@ -91,13 +90,7 @@ int octeon_init_instr_queue(struct octeon_device *oct, iq->oct_dev = oct; - set_dev_node(&oct->pci_dev->dev, numa_node); - iq->base_addr = lio_dma_alloc(oct, q_size, - (dma_addr_t *)&iq->base_addr_dma); - set_dev_node(&oct->pci_dev->dev, orig_node); - if (!iq->base_addr) - iq->base_addr = lio_dma_alloc(oct, q_size, - (dma_addr_t *)&iq->base_addr_dma); + iq->base_addr = lio_dma_alloc(oct, q_size, &iq->base_addr_dma); if (!iq->base_addr) { dev_err(&oct->pci_dev->dev, "Cannot allocate memory for instr queue %d\n", iq_no); @@ -211,7 +204,7 @@ int octeon_setup_iq(struct octeon_device *oct, void *app_ctx) { u32 iq_no = (u32)txpciq.s.q_no; - int numa_node = cpu_to_node(iq_no % num_online_cpus()); + int numa_node = dev_to_node(&oct->pci_dev->dev); if (oct->instr_queue[iq_no]) { dev_dbg(&oct->pci_dev->dev, "IQ is in use. Cannot create the IQ: %d again\n", |