// profile the tests during execution:
//
//	-benchmem
//	    Print memory allocation statistics for benchmarks.
//	    Allocations made in C or using C.malloc are not counted.
//
//	-blockprofile block.out
//	    Write a goroutine blocking profile to the specified file
//	    when all tests are complete.
//	    Writes test binary as -c would.
//
//	-blockprofilerate n

// malloc and runtime locks for mLockProfile.
// TODO(mknyszek): Implement lazy allocation if this becomes a problem.
func mProfStackInit(mp *m) {
	if debug.profstackdepth == 0 {
		// debug.profstack is set to 0 by the user, or we're being called from
		// schedinit before parsedebugvars.
		return
	}
	mp.profStack = makeProfStackFP()
	mp.mLockProfile.stack = makeProfStackFP()
}