From 89009fbb7d2df37536c8dc932fdead4189783f92 Mon Sep 17 00:00:00 2001 From: "Kashyap, Desai" Date: Wed, 17 Mar 2010 16:22:52 +0530 Subject: [PATCH] [SCSI] mpt2sas: Use of get_free_pages for huge memorary allocation. use the get_free_pages API for larger contigious physical memory chunk. Also, the ioc->chain_depth need to be changed from a 16bit to 32bit variable because the number of chains will exceed 64k when the queue depth is large. Signed-off-by: Kashyap Desai Signed-off-by: James Bottomley --- drivers/scsi/mpt2sas/mpt2sas_base.c | 12 +++++++----- drivers/scsi/mpt2sas/mpt2sas_base.h | 5 +++-- 2 files changed, 10 insertions(+), 7 deletions(-) diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.c b/drivers/scsi/mpt2sas/mpt2sas_base.c index 2e6e45a2803f..9ad4b48a9b62 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_base.c +++ b/drivers/scsi/mpt2sas/mpt2sas_base.c @@ -1901,7 +1901,7 @@ _base_release_memory_pools(struct MPT2SAS_ADAPTER *ioc) ioc->config_page, ioc->config_page_dma); } - kfree(ioc->scsi_lookup); + free_pages((ulong)ioc->scsi_lookup, ioc->scsi_lookup_pages); kfree(ioc->hpr_lookup); kfree(ioc->internal_lookup); } @@ -2113,11 +2113,13 @@ _base_allocate_memory_pools(struct MPT2SAS_ADAPTER *ioc, int sleep_flag) ioc->name, (unsigned long long) ioc->request_dma)); total_sz += sz; - ioc->scsi_lookup = kcalloc(ioc->scsiio_depth, - sizeof(struct request_tracker), GFP_KERNEL); + sz = ioc->scsiio_depth * sizeof(struct request_tracker); + ioc->scsi_lookup_pages = get_order(sz); + ioc->scsi_lookup = (struct request_tracker *)__get_free_pages( + GFP_KERNEL, ioc->scsi_lookup_pages); if (!ioc->scsi_lookup) { - printk(MPT2SAS_ERR_FMT "scsi_lookup: kcalloc failed\n", - ioc->name); + printk(MPT2SAS_ERR_FMT "scsi_lookup: get_free_pages failed, " + "sz(%d)\n", ioc->name, (int)sz); goto out; } diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.h b/drivers/scsi/mpt2sas/mpt2sas_base.h index 142b694c9de5..cdedfcbb8ca7 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_base.h +++ b/drivers/scsi/mpt2sas/mpt2sas_base.h @@ -676,7 +676,8 @@ struct MPT2SAS_ADAPTER { dma_addr_t request_dma; u32 request_dma_sz; struct request_tracker *scsi_lookup; - spinlock_t scsi_lookup_lock; + ulong scsi_lookup_pages; + spinlock_t scsi_lookup_lock; struct list_head free_list; int pending_io_count; wait_queue_head_t reset_wq; @@ -688,7 +689,7 @@ struct MPT2SAS_ADAPTER { u16 max_sges_in_chain_message; u16 chains_needed_per_io; u16 chain_offset_value_for_main_message; - u16 chain_depth; + u32 chain_depth; /* hi-priority queue */ u16 hi_priority_smid; -- 2.34.1