diff options
Diffstat (limited to 'drivers/scsi/hosts.c')
| -rw-r--r-- | drivers/scsi/hosts.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c index 55522b7162d3..1d669e47b692 100644 --- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -38,6 +38,7 @@ #include <scsi/scsi_device.h> #include <scsi/scsi_host.h> #include <scsi/scsi_transport.h> +#include <scsi/scsi_cmnd.h> #include "scsi_priv.h" #include "scsi_logging.h" @@ -554,13 +555,29 @@ struct Scsi_Host *scsi_host_get(struct Scsi_Host *shost) } EXPORT_SYMBOL(scsi_host_get); +static bool scsi_host_check_in_flight(struct request *rq, void *data, + bool reserved) +{ + int *count = data; + struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(rq); + + if (test_bit(SCMD_STATE_INFLIGHT, &cmd->state)) + (*count)++; + + return true; +} + /** * scsi_host_busy - Return the host busy counter * @shost: Pointer to Scsi_Host to inc. **/ int scsi_host_busy(struct Scsi_Host *shost) { - return atomic_read(&shost->host_busy); + int cnt = 0; + + blk_mq_tagset_busy_iter(&shost->tag_set, + scsi_host_check_in_flight, &cnt); + return cnt; } EXPORT_SYMBOL(scsi_host_busy); |