> cpumask: avoid playing with cpus_allowed in powernow-k8.c > > It's generally a very bad idea to mug some process's cpumask: it could > legitimately and reasonably be changed by root, which could break us > (if done before our code) or them (if we restore the wrong value). > > I did not replace powernowk8_target; it needs fixing, but it grabs a > mutex (so no smp_call_function_single here) but Mark points out it can > be called multiple times per second, so work_on_cpu is too heavy. > > Signed-off-by: Rusty Russell <rusty@xxxxxxxxxxxxxxx> > To: davej@xxxxxxxxxx > To: cpufreq@xxxxxxxxxxxxxxx > Cc: mark.langsdorf@xxxxxxx I ran this over the weekend on a 24 core box without any issues. Please commit. Acked-by: Mark Langsdorf <mark.langsdorf@xxxxxxx> Tested-by: Mark Langsdorf <mark.langsdorf@xxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
