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| author | Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> | 2017-02-02 15:53:20 -0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-02-03 10:35:03 -0500 |
| commit | c4e2fbca374b9797276061840dc95708adf512ed (patch) | |
| tree | c505b37bea140aa937ba9a596ecfaa82cbd72968 /tools/perf/scripts/python/bin/stackcollapse-report | |
| parent | scsi: aacraid: Retrieve and update the device types (diff) | |
| download | linux-c4e2fbca374b9797276061840dc95708adf512ed.tar.gz linux-c4e2fbca374b9797276061840dc95708adf512ed.zip | |
scsi: aacraid: Reworked scsi command submission path
Moved the READ and WRITE switch cases to the top. Added a default
case to the switch case and replaced duplicate scsi result value with a
macro.
The idea is that since most of scsi commands we care about performance
wise are read or write, we need to process them first.
Internally the compiler (GCC) converts a switch case into either a jump
table or a bunch of if else conditions, so placing the often used read,
write cases at the top is an effort in optimization.
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Dave Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-report')
0 files changed, 0 insertions, 0 deletions