On Wed, Apr 13, 2016 at 01:05:56PM +0200, Daniel Lezcano wrote: > The interrupt framework gives a lot of information about each interrupt. > > It does not keep track of when those interrupts occur though. > > This patch provides a mean to record the elapsed time between successive > interrupt occurrences in a per-IRQ per-CPU circular buffer to help with the > prediction of the next occurrence using a statistical model. > > A new function is added to browse the different interrupts and retrieve the > timing information stored in it. > > A static key is introduced so when the irq prediction is switched off at > runtime, we can reduce the overhead near to zero. The irq timings is > supposed to be potentially used by different sub-systems and for this reason > the static key is a ref counter, so when the last use releases the irq > timings that will result on the effective deactivation of the irq measurement. > > Signed-off-by: Daniel Lezcano <daniel.lezc...@linaro.org> > Acked-by: Nicolas Pitre <nicolas.pi...@linaro.org> > --- > V4: > - Added a static key > - Added more comments for irq_timings_get_next() > - Unified some function names to be prefixed by 'irq_timings_...' > - Fixed a rebase error
Hi Thomas, I believe all the comments were addressed. I can imagine you are very busy at the moment. Is there something else I should fix or is the patch ok for you ? Thanks. -- Daniel
