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Added 1GB hugepages support for Linux

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This commit is contained in:
SChernykh 2019-12-05 19:39:47 +01:00
parent caa2da8bb3
commit 1fbbae1e4a
28 changed files with 156 additions and 50 deletions
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42
src/crypto/common/VirtualMemory_unix.cpp
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@ -58,24 +58,33 @@ void *xmrig::VirtualMemory::allocateExecutableMemory(size_t size)
void *xmrig::VirtualMemory::allocateLargePagesMemory(size_t size)
{
int flag_1gb = 0;
# if defined(__APPLE__)
void *mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, VM_FLAGS_SUPERPAGE_SIZE_2MB, 0);
# elif defined(__FreeBSD__)
void *mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_ALIGNED_SUPER | MAP_PREFAULT_READ, -1, 0);
# else
void *mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB | MAP_POPULATE, 0, 0);
# endif
return mem == MAP_FAILED ? nullptr : mem;
}
void *xmrig::VirtualMemory::allocateOneGbPagesMemory(size_t size)
{
# if defined(__APPLE__)
void *mem = MAP_FAILED;
# elif defined(__FreeBSD__)
void *mem = MAP_FAILED;
# else
# if defined(MAP_HUGE_1GB)
flag_1gb = (size > (1UL << 30)) ? MAP_HUGE_1GB : 0;
constexpr int flag_1gb = MAP_HUGE_1GB;
# elif defined(MAP_HUGE_SHIFT)
flag_1gb = (size > (1UL << 30)) ? (30 << MAP_HUGE_SHIFT) : 0;
constexpr int flag_1gb = (30 << MAP_HUGE_SHIFT);
# endif
void *mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB | MAP_POPULATE | flag_1gb, 0, 0);
if (mem == MAP_FAILED) {
mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB | MAP_POPULATE, 0, 0);
}
# endif
return mem == MAP_FAILED ? nullptr : mem;
@ -132,6 +141,25 @@ bool xmrig::VirtualMemory::allocateLargePagesMemory()
}
bool xmrig::VirtualMemory::allocateOneGbPagesMemory()
{
m_scratchpad = static_cast<uint8_t*>(allocateOneGbPagesMemory(m_size));
if (m_scratchpad) {
m_flags.set(FLAG_HUGEPAGES, true);
madvise(m_scratchpad, m_size, MADV_RANDOM | MADV_WILLNEED);
if (mlock(m_scratchpad, m_size) == 0) {
m_flags.set(FLAG_LOCK, true);
}
return true;
}
return false;
}
void xmrig::VirtualMemory::freeLargePagesMemory()
{
if (m_flags.test(FLAG_LOCK)) {