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authorPeter Oberparleiter <peter.oberparleiter@de.ibm.com>2008-01-26 14:10:48 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2008-01-26 14:11:03 +0100
commite82a1567e4b22eb035da2499d20ddd573c9acf75 (patch)
tree0cf697f96e734a846ee1cbc598beebcc7be10117 /Documentation/driver-model
parent4beee64685e116b01c47655daf6d88df87e053c8 (diff)
[S390] cio: reduce cpu utilization during device scan
Minimize calls to cpu intensive function get_subchannel_by_schid() by introducing function for_each_subchannel_staged() which temporarily caches the information about registered subchannels in a bitmap. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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