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| author | Stefan Haberland <stefan.haberland@de.ibm.com> | 2010-08-09 20:13:00 +0400 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-08-09 20:12:54 +0400 |
| commit | 7c8faa86290c1a2607d6b768a0b874ec392a5c2a (patch) | |
| tree | 7cb94efdbd3ce3c5eb8fb7a2b7d8a5bedebcb1a2 /drivers/s390/block/dasd_int.h | |
| parent | f932bcea6b7317312ab38df12a84710fc6c67a81 (diff) | |
| download | linux-7c8faa86290c1a2607d6b768a0b874ec392a5c2a.tar.xz | |
[S390] dasd: tunable missing interrupt handler
This feature provides a user interface to specify the timeout for
missing interrupts for standard I/O operations.
Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/block/dasd_int.h')
| -rw-r--r-- | drivers/s390/block/dasd_int.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h index 49b431d135e0..500678d7116c 100644 --- a/drivers/s390/block/dasd_int.h +++ b/drivers/s390/block/dasd_int.h @@ -186,7 +186,7 @@ struct dasd_ccw_req { /* ... and how */ unsigned long starttime; /* jiffies time of request start */ - int expires; /* expiration period in jiffies */ + unsigned long expires; /* expiration period in jiffies */ char lpm; /* logical path mask */ void *data; /* pointer to data area */ @@ -224,6 +224,9 @@ struct dasd_ccw_req { #define DASD_CQR_CLEARED 0x84 /* request was cleared */ #define DASD_CQR_SUCCESS 0x85 /* request was successful */ +/* default expiration time*/ +#define DASD_EXPIRES 300 +#define DASD_EXPIRES_MAX 40000000 /* per dasd_ccw_req flags */ #define DASD_CQR_FLAGS_USE_ERP 0 /* use ERP for this request */ @@ -404,6 +407,9 @@ struct dasd_device { /* hook for alias management */ struct list_head alias_list; + + /* default expiration time in s */ + unsigned long default_expires; }; struct dasd_block { |