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Having the x86 specific interrupt statistics as a data structure with individual members instead of an array is just stupid as it requires endless copy and paste in arch_show_interrupts() and arch_irq_stat_cpu(), where the latter does not even take the latest interrupt additions into account. The resulting #ifdef orgy is just disgusting. Convert it to an array of counters, which does not make a difference in the actual interrupt hotpath increment as the array index is constant and therefore not any different than the member based access. But in arch_show_interrupts() and arch_irq_stat_cpu() this just turns into a loop, which reduces the text size by ~2k (~12%): text data bss dec hex filename 19643 15250 904 35797 8bd5 ../build/arch/x86/kernel/irq.o 17355 15250 904 33509 82e5 ../build/arch/x86/kernel/irq.o Adding a new vector or software counter only requires to update the table and everything just works. Using the core provided emit function which speeds up 0 outputs makes it significantly faster. Signed-off-by: Thomas Gleixner <tglx@kernel.org> Tested-by: Michael Kelley <mhklinux@outlook.com> Reviewed-by: Radu Rendec <radu@rendec.net> Link: https://patch.msgid.link/20260517194931.196070643@kernel.org