diff options
| author | Tejun Heo <htejun@gmail.com> | 2006-05-15 20:58:19 +0900 |
|---|---|---|
| committer | Tejun Heo <htejun@gmail.com> | 2006-05-15 20:58:19 +0900 |
| commit | 0c247c559cd70f85ba9f0764ce13ae00e20fcad8 (patch) | |
| tree | 9b0d00b300ad9178438b9c7feba95ed62f540c1a /include/linux/libata.h | |
| parent | 9be1e979f2e1e57a091a658fa88dac266f9fd6fe (diff) | |
[PATCH] libata-eh: implement dev->ering
This patch implements ata_ering and uses it to define dev->ering.
ata_ering is a ring buffer which records libata errors - whether a
command was for normar IO request, err_mask and timestamp. Errors are
recorded per-device in dev->ering. This will be used by EH to
determine recovery actions.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Diffstat (limited to 'include/linux/libata.h')
| -rw-r--r-- | include/linux/libata.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h index 6fe5ed8eabf..f5cea13599c 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -226,6 +226,9 @@ enum { ATA_PORT_PRIMARY = (1 << 0), ATA_PORT_SECONDARY = (1 << 1), + /* ering size */ + ATA_ERING_SIZE = 32, + /* reset / recovery action types */ ATA_EH_REVALIDATE = (1 << 0), ATA_EH_SOFTRESET = (1 << 1), @@ -375,6 +378,17 @@ struct ata_host_stats { unsigned long rw_reqbuf; }; +struct ata_ering_entry { + int is_io; + unsigned int err_mask; + u64 timestamp; +}; + +struct ata_ering { + int cursor; + struct ata_ering_entry ring[ATA_ERING_SIZE]; +}; + struct ata_device { struct ata_port *ap; u64 n_sectors; /* size of device, if ATA */ @@ -401,6 +415,9 @@ struct ata_device { u16 cylinders; /* Number of cylinders */ u16 heads; /* Number of heads */ u16 sectors; /* Number of sectors per track */ + + /* error history */ + struct ata_ering ering; }; struct ata_port { |