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[SCSI] ipr: Implement block iopoll

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This patch implements blk iopoll in ipr driver for performance improvement.

Signed-off-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
wenxiong@linux.vnet.ibm.com
2013-01-11 17:43:52 -06:00
committed by James Bottomley
parent 56d6aa33d3
commit b53d124a15
2 changed files with 178 additions and 49 deletions
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6
drivers/scsi/ipr.h
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@@ -32,6 +32,7 @@
#include <linux/libata.h>
#include <linux/list.h>
#include <linux/kref.h>
#include <linux/blk-iopoll.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
@@ -492,6 +493,8 @@ struct ipr_hrr_queue {
u8 allow_interrupts:1;
u8 ioa_is_dead:1;
u8 allow_cmds:1;
struct blk_iopoll iopoll;
};
/* Command packet structure */
@@ -1348,6 +1351,7 @@ struct ipr_chip_cfg_t {
u16 max_cmds;
u8 cache_line_size;
u8 clear_isr;
u32 iopoll_weight;
struct ipr_interrupt_offsets regs;
};
@@ -1534,6 +1538,8 @@ struct ipr_ioa_cfg {
char desc[22];
} vectors_info[IPR_MAX_MSIX_VECTORS];
u32 iopoll_weight;
}; /* struct ipr_ioa_cfg */
struct ipr_cmnd {