var runtime.mutexprofilerate

6 uses

	runtime (current package)
		mprof.go#L430: var mutexprofilerate uint64 // fraction sampled
		mprof.go#L441: 		return int(mutexprofilerate)
		mprof.go#L443: 	old := mutexprofilerate
		mprof.go#L444: 	atomic.Store64(&mutexprofilerate, uint64(rate))
		mprof.go#L453: 	rate := int64(atomic.Load64(&mutexprofilerate))
		sema.go#L125: 	if profile&semaMutexProfile != 0 && mutexprofilerate > 0 {

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