【WALT】任务负载 util 的计算路径代码片段

wg_cpu->util = waltgov_get_util(wg_cpu);

static unsigned long waltgov_get_util(struct waltgov_cpu *wg_cpu)
{
   
   
	struct rq *rq = cpu_rq(wg_cpu->cpu);
	unsigned long max = arch_scale_cpu_capacity(wg_cpu->cpu);
	unsigned long util;

	wg_cpu->max = max;
	wg_cpu->reasons = 0;
	util = cpu_util_freq_walt(wg_cpu->cpu, &wg_cpu->walt_load, &wg_cpu->reasons);
	return uclamp_rq_util_with(rq, util, NULL);
}

#define ADJUSTED_ASYM_CAP_CPU_UTIL(orig, other, x)	\
			(max(orig, mult_frac(other, x, 100)))

unsigned long
cpu_util_freq_walt(int cpu, struct walt_cpu_load *walt_load, unsigned int *reason)
{
   
   
	struct walt_cpu_load wl_other = {
   
   0};
	unsigned long util = 0, util_other = 0;
	unsigned long capacity = capacity_orig_of(cpu)