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scsi: megaraid_sas: reduce size of fusion_context and use vmalloc if kmalloc fails

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Currently fusion context has fixed array load_balance_info. Use dynamic
allocation.  In few places, driver do not want physically contigious
memory.  Attempt to use vmalloc if physical contiguous memory is not
available.

Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Shivasharan S
2017-02-10 00:59:17 -08:00
committed by Martin K. Petersen
parent b4a42213a7
commit 5fc499b612
5 changed files with 76 additions and 18 deletions
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3
drivers/scsi/megaraid/megaraid_sas_fusion.h
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@@ -1287,7 +1287,8 @@ struct fusion_context {
struct MR_PD_CFG_SEQ_NUM_SYNC *pd_seq_sync[JBOD_MAPS_COUNT];
dma_addr_t pd_seq_phys[JBOD_MAPS_COUNT];
u8 fast_path_io;
struct LD_LOAD_BALANCE_INFO load_balance_info[MAX_LOGICAL_DRIVES_EXT];
struct LD_LOAD_BALANCE_INFO *load_balance_info;
u32 load_balance_info_pages;
LD_SPAN_INFO log_to_span[MAX_LOGICAL_DRIVES_EXT];
u8 adapter_type;
struct LD_STREAM_DETECT **stream_detect_by_ld;