On Tue, 2008-04-22 at 09:57 +0200, Jens Axboe wrote: > Hi, > > While working on the more scalable and faster > smp_call_function_single(), the amount of arch duplicated code in there > botherered me. So I started adding a generic kernel/smp.c helper that > the archs could use instead. > > Arch code exports two helper functions: > > arch_send_call_function_single_ipi(cpu) > Send call function single ipi to given cpu > arch_send_call_function_ipi(cpumask) > Send call function ipi to cpus in cpumask > > and then use the generic ipi interrupt helpers to execute the code. I > converted most of the archs capable of SMP, I think only sparc and > sparc64 are still missing. Archs set CONFIG_GENERIC_SMP_HELPERS if they > wish to use the generic helpers for this. > > The end result is that we have unified code for handling ipi for > function calls. Even with adding special handling for the single cpu > function call, the diffstat is pretty nice (see below. Real nice work Jens! -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
