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8e3fba55d3
A specific request from the firmware people is the ability to back-off from sending more asynchronous operations once a specific number of operations are in-flight. This patch adds that ability - with a new sysfs parameter 'outstanding_operations_max' which controls the maximum number of operations that can be outstanding/in-flight at any time. When outstanding_operations_max contains a non-zero value and asynchronous operations are being used - we will back-off until the completion counter is < outstanding_operations_max. Tested in both synchronous and asynchronous mode and with gb_loopback_connection_exit() interrupting in-flight operations. Suggested-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> Reviewed-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> |
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