openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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>
This commit is contained in:
Mike Marciniszyn 2016-10-17 04:19:13 -07:00 committed by Doug Ledford
parent be5d740bdc
commit 99c7abfb62
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/infiniband/hw/hfi1/pio.h
View File

@ -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 */
};