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| author |   Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com> | 2016-10-14 14:34:51 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-12-14 16:33:39 +0100 |
| commit | e47de21dd35bad6d1e71482a66699cd04e83ea40 (patch) | |
| tree | 1089dd285e8cde50690b546db76285efa198b8cc /drivers/s390/crypto/ap_bus.h | |
| parent | s390/zcrypt: Introduce new zcrypt device status API (diff) | |
| download | linux-dev-e47de21dd35bad6d1e71482a66699cd04e83ea40.tar.xz linux-dev-e47de21dd35bad6d1e71482a66699cd04e83ea40.zip | |
s390/zcrypt: Fixed attrition of AP adapters and domains
Currently the first eligible AP adapter respectively domain will be
selected to service requests. In case of sequential workload, the
very same adapter/domain will be used.
The adapter/domain selection algorithm now considers the completed
transactions per adaper/domain and therefore ensures a homogeneous
utilization.
Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/crypto/ap_bus.h')
| -rw-r--r-- | drivers/s390/crypto/ap_bus.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/s390/crypto/ap_bus.h b/drivers/s390/crypto/ap_bus.h index 54b17e142792..4dc7c88fb054 100644 --- a/drivers/s390/crypto/ap_bus.h +++ b/drivers/s390/crypto/ap_bus.h @@ -195,6 +195,7 @@ struct ap_card { unsigned int functions; /* AP device function bitfield. */ int queue_depth; /* AP queue depth.*/ int id; /* AP card number. */ + atomic_t total_request_count; /* # requests ever for this AP device.*/ }; #define to_ap_card(x) container_of((x), struct ap_card, ap_dev.device) @@ -211,7 +212,7 @@ struct ap_queue { enum ap_state state; /* State of the AP device. */ int pendingq_count; /* # requests on pendingq list. */ int requestq_count; /* # requests on requestq list. */ - int total_request_count; /* # requests ever for this AP device. */ + int total_request_count; /* # requests ever for this AP device.*/ int request_timeout; /* Request timout in jiffies. */ struct timer_list timeout; /* Timer for request timeouts. */ struct list_head pendingq; /* List of message sent to AP queue. */ |