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f45c40a92d
This patch adds the following: 1) Compiler hinting in the fast path. 2) A prefetch of port->flags to eliminate moderate cpu stalling later in mtip_hw_submit_io(). 3) Eliminate a redundant rq_data_dir(). 4) Reorder members of driver_data to eliminate false cacheline sharing between irq_workers_active and unal_qdepth. With some workload and topology configurations, I'm seeing ~1.5% throughput improvement in small block random read benchmarks as well as improved latency std. dev. Signed-off-by: Sam Bradshaw <sbradshaw@micron.com> Add include of <linux/prefetch.h> Signed-off-by: Jens Axboe <axboe@fb.com> |
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| Kconfig | ||
| Makefile | ||
| mtip32xx.c | ||
| mtip32xx.h | ||