On 31 July 2012 18:33, Igor Mitsyanko <i.mitsya...@samsung.com> wrote: > On 07/31/2012 07:43 PM, Peter Maydell wrote: >> Anthony claims that SD_GET_CLASS should be cheap enough that we don't >> need to hoist it out of loops like this. Do you have profiling data >> or similar that caused you to write this patch?
> Well, I've tested it by measuring an execution time of a 4Kb write to SD > card, results showed that arithmetic mean of time for one 4k write was less > by ~300us in sequence with SD_GET_CLASS extracted from the loop. How much is that as a % of the total time for the write ? -- PMM
