diff options
| author | Mike Marciniszyn <mike.marciniszyn@intel.com> | 2012-05-07 22:02:31 +0400 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2012-05-14 23:43:34 +0400 |
| commit | 1c94283ddbe8a9945c4aaac8b0be90d47f97f2df (patch) | |
| tree | 37d46ea239d1e872007bd0dc93b2a3d40311afa8 /drivers/infiniband/hw/qib/qib.h | |
| parent | 3236b2d469dba42fde837b8cb06308f7f360dfed (diff) | |
| download | linux-1c94283ddbe8a9945c4aaac8b0be90d47f97f2df.tar.xz | |
IB/qib: Add cache line awareness to qib_qp and qib_devdata structures
This patch reorganizes the QP and devdata files to be more cache line aware.
qib_qp fields in particular are split into read-mostly, send, and receive fields.
qib_devdata fields are split into read-mostly and read/write fields
Testing has show that bidirectional tests improve by as much as 100%
with this patch.
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/hw/qib/qib.h')
| -rw-r--r-- | drivers/infiniband/hw/qib/qib.h | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/drivers/infiniband/hw/qib/qib.h b/drivers/infiniband/hw/qib/qib.h index 2d638877c4af..7e62f4137148 100644 --- a/drivers/infiniband/hw/qib/qib.h +++ b/drivers/infiniband/hw/qib/qib.h @@ -530,8 +530,6 @@ struct qib_pportdata { /* qib_lflags driver is waiting for */ u32 state_wanted; spinlock_t lflags_lock; - /* number of (port-specific) interrupts for this port -- saturates... */ - u32 int_counter; /* ref count for each pkey */ atomic_t pkeyrefs[4]; @@ -543,24 +541,26 @@ struct qib_pportdata { u64 *statusp; /* SendDMA related entries */ - spinlock_t sdma_lock; - struct qib_sdma_state sdma_state; - unsigned long sdma_buf_jiffies; + + /* read mostly */ struct qib_sdma_desc *sdma_descq; + struct qib_sdma_state sdma_state; + dma_addr_t sdma_descq_phys; + volatile __le64 *sdma_head_dma; /* DMA'ed by chip */ + dma_addr_t sdma_head_phys; + u16 sdma_descq_cnt; + + /* read/write using lock */ + spinlock_t sdma_lock ____cacheline_aligned_in_smp; + struct list_head sdma_activelist; u64 sdma_descq_added; u64 sdma_descq_removed; - u16 sdma_descq_cnt; u16 sdma_descq_tail; u16 sdma_descq_head; - u16 sdma_next_intr; - u16 sdma_reset_wait; u8 sdma_generation; - struct tasklet_struct sdma_sw_clean_up_task; - struct list_head sdma_activelist; - dma_addr_t sdma_descq_phys; - volatile __le64 *sdma_head_dma; /* DMA'ed by chip */ - dma_addr_t sdma_head_phys; + struct tasklet_struct sdma_sw_clean_up_task + ____cacheline_aligned_in_smp; wait_queue_head_t state_wait; /* for state_wanted */ |