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| author | Kashyap.Desai@avagotech.com <Kashyap.Desai@avagotech.com> | 2014-08-20 19:24:33 +0530 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-09-15 16:01:58 -0700 |
| commit | 64bdcbc449105377dd60c8da97cfc1663b39562c (patch) | |
| tree | be79dd9fe4dfd101dc68ed5ee6d0d53ce2efad09 /drivers/usb/storage/usb.c | |
| parent | 2eefd57b97609949ae40952da2dea338e7d9a125 (diff) | |
| download | blackbird-op-linux-64bdcbc449105377dd60c8da97cfc1663b39562c.tar.gz blackbird-op-linux-64bdcbc449105377dd60c8da97cfc1663b39562c.zip | |
scsi: add use_cmd_list flag
Add a use_cmd_list flag in struct Scsi_Host to request keeping track of
all outstanding commands per device.
Default behaviour is not to keep track of cmd_list per sdev, as this may
introduce lock contention. (overhead is more on multi-node NUMA.), and
only enable it on the two drivers that need it.
Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/usb/storage/usb.c')
0 files changed, 0 insertions, 0 deletions
