var runtime.mutexprofilerate

6 uses

	runtime (current package)
		mprof.go#L532: var mutexprofilerate uint64 // fraction sampled
		mprof.go#L543: 		return int(mutexprofilerate)
		mprof.go#L545: 	old := mutexprofilerate
		mprof.go#L546: 	atomic.Store64(&mutexprofilerate, uint64(rate))
		mprof.go#L555: 	rate := int64(atomic.Load64(&mutexprofilerate))
		sema.go#L141: 	if profile&semaMutexProfile != 0 && mutexprofilerate > 0 {

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