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kern: greatly improve codegen for atomics, scheduler

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This commit is contained in:
Michael Scire 2021-01-08 02:13:36 -08:00
parent f051f707ed
commit 4aa18b06e8
19 changed files with 67 additions and 46 deletions
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15
libraries/libmesosphere/source/arch/arm64/kern_cpu.cpp
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@ -109,7 +109,7 @@ namespace ams::kern::arch::arm64::cpu {
/* Wait for a request to come in. */
{
KScopedLightLock lk(m_cv_lock);
while ((m_target_cores & (1ul << core_id)) == 0) {
while ((m_target_cores.load() & (1ul << core_id)) == 0) {
m_cv.Wait(std::addressof(m_cv_lock));
}
}
@ -120,7 +120,7 @@ namespace ams::kern::arch::arm64::cpu {
/* Broadcast, if there's nothing pending. */
{
KScopedLightLock lk(m_cv_lock);
if (m_target_cores == 0) {
if (m_target_cores.load() == 0) {
m_cv.Broadcast();
}
}
@ -163,7 +163,7 @@ namespace ams::kern::arch::arm64::cpu {
if ((op == Operation::InstructionMemoryBarrier) || (Kernel::GetState() == Kernel::State::Initializing)) {
/* Check that there's no on-going operation. */
MESOSPHERE_ABORT_UNLESS(m_operation == Operation::Idle);
MESOSPHERE_ABORT_UNLESS(m_target_cores == 0);
MESOSPHERE_ABORT_UNLESS(m_target_cores.load() == 0);
/* Set operation. */
m_operation = op;
@ -171,12 +171,13 @@ namespace ams::kern::arch::arm64::cpu {
/* For certain operations, we want to send an interrupt. */
m_target_cores = other_cores_mask;
const u64 target_mask = m_target_cores;
const u64 target_mask = m_target_cores.load();
DataSynchronizationBarrier();
Kernel::GetInterruptManager().SendInterProcessorInterrupt(KInterruptName_CacheOperation, target_mask);
this->ProcessOperation();
while (m_target_cores != 0) {
while (m_target_cores.load() != 0) {
cpu::Yield();
}
@ -188,7 +189,7 @@ namespace ams::kern::arch::arm64::cpu {
/* Check that there's no on-going operation. */
MESOSPHERE_ABORT_UNLESS(m_operation == Operation::Idle);
MESOSPHERE_ABORT_UNLESS(m_target_cores == 0);
MESOSPHERE_ABORT_UNLESS(m_target_cores.load() == 0);
/* Set operation. */
m_operation = op;
@ -198,7 +199,7 @@ namespace ams::kern::arch::arm64::cpu {
/* Use the condvar. */
m_cv.Broadcast();
while (m_target_cores != 0) {
while (m_target_cores.load() != 0) {
m_cv.Wait(std::addressof(m_cv_lock));
}