diff options
| author | Finn Thain <fthain@telegraphics.com.au> | 2016-10-10 07:46:53 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-11-09 01:29:48 +0300 |
| commit | 25894d1f98aed363bf03e2509d0237c69ab0c8ec (patch) | |
| tree | 793082497d7ce41de12e345bf8c25fa37bc3ae9f /drivers/scsi/NCR5380.h | |
| parent | 4822827a69d7cd3bc5a07b7637484ebd2cf88db6 (diff) | |
| download | linux-25894d1f98aed363bf03e2509d0237c69ab0c8ec.tar.xz | |
scsi: ncr5380: Improve hostdata struct member alignment and cache-ability
Re-order struct members so that hot data lies at the beginning of the
struct and cold data at the end. Improve the comments while we're here.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ondrej Zary <linux@rainbow-software.org>
Tested-by: Michael Schmitz <schmitzmic@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/NCR5380.h')
| -rw-r--r-- | drivers/scsi/NCR5380.h | 40 |
1 files changed, 20 insertions, 20 deletions
diff --git a/drivers/scsi/NCR5380.h b/drivers/scsi/NCR5380.h index f0eea44107d2..ceafa0cd80be 100644 --- a/drivers/scsi/NCR5380.h +++ b/drivers/scsi/NCR5380.h @@ -219,27 +219,27 @@ #define FLAG_TOSHIBA_DELAY 128 /* Allow for borken CD-ROMs */ struct NCR5380_hostdata { - NCR5380_implementation_fields; /* implementation specific */ - struct Scsi_Host *host; /* Host backpointer */ - unsigned char id_mask, id_higher_mask; /* 1 << id, all bits greater */ - unsigned char busy[8]; /* index = target, bit = lun */ - int dma_len; /* requested length of DMA */ - unsigned char last_message; /* last message OUT */ - struct scsi_cmnd *connected; /* currently connected cmnd */ - struct scsi_cmnd *selecting; /* cmnd to be connected */ - struct list_head unissued; /* waiting to be issued */ - struct list_head autosense; /* priority issue queue */ - struct list_head disconnected; /* waiting for reconnect */ - spinlock_t lock; /* protects this struct */ - int flags; - struct scsi_eh_save ses; - struct scsi_cmnd *sensing; + NCR5380_implementation_fields; /* Board-specific data */ + unsigned long poll_loops; /* Register polling limit */ + spinlock_t lock; /* Protects this struct */ + struct scsi_cmnd *connected; /* Currently connected cmnd */ + struct list_head disconnected; /* Waiting for reconnect */ + struct Scsi_Host *host; /* SCSI host backpointer */ + struct workqueue_struct *work_q; /* SCSI host work queue */ + struct work_struct main_task; /* Work item for main loop */ + int flags; /* Board-specific quirks */ + int dma_len; /* Requested length of DMA */ + int read_overruns; /* Transfer size reduction for DMA erratum */ + struct list_head unissued; /* Waiting to be issued */ + struct scsi_cmnd *selecting; /* Cmnd to be connected */ + struct list_head autosense; /* Priority cmnd queue */ + struct scsi_cmnd *sensing; /* Cmnd needing autosense */ + struct scsi_eh_save ses; /* Cmnd state saved for EH */ + unsigned char busy[8]; /* Index = target, bit = lun */ + unsigned char id_mask; /* 1 << Host ID */ + unsigned char id_higher_mask; /* All bits above id_mask */ + unsigned char last_message; /* Last Message Out */ char info[256]; - int read_overruns; /* number of bytes to cut from a - * transfer to handle chip overruns */ - struct work_struct main_task; - struct workqueue_struct *work_q; - unsigned long poll_loops; /* register polling limit */ }; #ifdef __KERNEL__ |