Question

I may miss the obvious, but how/is it possible to retrieve interrupt counters for a specific interrupt without manually parsing /proc/interrupts from inside a C/C++ program?

Thanks in advance!

Best regards, Martin

Answer 1

/proc/interrupts and /proc/stat obtain their data by calling the kernel function kstat_irqs_cpu(). The only way to read it without opening the files in /proc is, I think, writing your own kernel driver which would call the same function and return the results via ioctl() or some other way.