go/src/runtime/mpagealloc_64bit.go

const summaryLevels …

const pageAlloc32Bit …

const pageAlloc64Bit …

const pallocChunksL1Bits …

var levelBits …

var levelShift …

var levelLogPages …

// sysInit performs architecture-dependent initialization of fields
// in pageAlloc. pageAlloc should be uninitialized except for sysStat
// if any runtime statistic should be updated.
func (p *pageAlloc) sysInit(test bool) { … }

// sysGrow performs architecture-dependent operations on heap
// growth for the page allocator, such as mapping in new memory
// for summaries. It also updates the length of the slices in
// p.summary.
//
// base is the base of the newly-added heap memory and limit is
// the first address past the end of the newly-added heap memory.
// Both must be aligned to pallocChunkBytes.
//
// The caller must update p.start and p.end after calling sysGrow.
func (p *pageAlloc) sysGrow(base, limit uintptr) { … }

// sysGrow increases the index's backing store in response to a heap growth.
//
// Returns the amount of memory added to sysStat.
func (s *scavengeIndex) sysGrow(base, limit uintptr, sysStat *sysMemStat) uintptr { … }

// sysInit initializes the scavengeIndex' chunks array.
//
// Returns the amount of memory added to sysStat.
func (s *scavengeIndex) sysInit(test bool, sysStat *sysMemStat) uintptr { … }