diff options
| author | Mike Marciniszyn <mike.marciniszyn@intel.com> | 2016-10-17 14:19:13 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-11-16 00:25:59 +0300 |
| commit | 99c7abfb626d0ce4e6e190dc7aeeb55eb21e335f (patch) | |
| tree | 2bd2fbe8280f1299cb35daf3ede4a11413ae0022 /drivers/infiniband/hw/hfi1/pio.h | |
| parent | be5d740bdc5448a8a542f8aa84d88d65fe88e486 (diff) | |
| download | linux-99c7abfb626d0ce4e6e190dc7aeeb55eb21e335f.tar.xz | |
IB/hfi1: Optimize pio cachelines
Move buffers_allocated pcpu pointer to allocator line.
Move hw_free pointer to releaser line.
Fill other holes revealed by pahole.
Reviewed-by: Sebastian Sanchez <sebastian.sanchez@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/hfi1/pio.h')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/pio.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/infiniband/hw/hfi1/pio.h b/drivers/infiniband/hw/hfi1/pio.h index e709eaf743b5..bd19507b6bb0 100644 --- a/drivers/infiniband/hw/hfi1/pio.h +++ b/drivers/infiniband/hw/hfi1/pio.h @@ -104,7 +104,6 @@ struct send_context { void __iomem *base_addr; /* start of PIO memory */ union pio_shadow_ring *sr; /* shadow ring */ - volatile __le64 *hw_free; /* HW free counter */ struct work_struct halt_work; /* halted context work queue entry */ unsigned long flags; /* flags */ int node; /* context home node */ @@ -116,19 +115,20 @@ struct send_context { u32 group; /* credit return group */ /* allocator fields */ spinlock_t alloc_lock ____cacheline_aligned_in_smp; + u32 sr_head; /* shadow ring head */ unsigned long fill; /* official alloc count */ unsigned long alloc_free; /* copy of free (less cache thrash) */ - u32 sr_head; /* shadow ring head */ + u32 __percpu *buffers_allocated;/* count of buffers allocated */ /* releaser fields */ spinlock_t release_lock ____cacheline_aligned_in_smp; - unsigned long free; /* official free count */ u32 sr_tail; /* shadow ring tail */ + unsigned long free; /* official free count */ + volatile __le64 *hw_free; /* HW free counter */ /* list for PIO waiters */ struct list_head piowait ____cacheline_aligned_in_smp; spinlock_t credit_ctrl_lock ____cacheline_aligned_in_smp; - u64 credit_ctrl; /* cache for credit control */ u32 credit_intr_count; /* count of credit intr users */ - u32 __percpu *buffers_allocated;/* count of buffers allocated */ + u64 credit_ctrl; /* cache for credit control */ wait_queue_head_t halt_wait; /* wait until kernel sees interrupt */ }; |