Re: [PATCH 0/3] spi: bcm2835: Interrupt-handling optimisations

2020-07-01 Thread Mark Brown
On Tue, 16 Jun 2020 01:09:26 +0100, Robin Murphy wrote: > Although Florian was concerned about a trivial inline check to deal with > shared IRQs adding overhead, the reality is that it would be so small as > to not be worth even thinking about unless the driver was already tuned > to squeeze out ev

[PATCH 0/3] spi: bcm2835: Interrupt-handling optimisations

2020-06-15 Thread Robin Murphy
Hi all, Although Florian was concerned about a trivial inline check to deal with shared IRQs adding overhead, the reality is that it would be so small as to not be worth even thinking about unless the driver was already tuned to squeeze out every last cycle. And a brief look over the code shows th