11 files changed, 24 insertions, 27 deletions

diff --git a/src/core/hle/kernel/k_scheduler.cpp b/src/core/hle/kernel/k_scheduler.cpp
index faa12b4f0..75ce5a23c 100644
--- a/src/core/hle/kernel/k_scheduler.cpp
+++ b/src/core/hle/kernel/k_scheduler.cpp
@@ -184,7 +184,8 @@ u64 KScheduler::UpdateHighestPriorityThread(KThread* highest_thread) {
         prev_highest_thread != highest_thread) [[likely]] {
         if (prev_highest_thread != nullptr) [[likely]] {
             IncrementScheduledCount(prev_highest_thread);
-            prev_highest_thread->SetLastScheduledTick(m_kernel.System().CoreTiming().GetCPUTicks());
+            prev_highest_thread->SetLastScheduledTick(
+                m_kernel.System().CoreTiming().GetClockTicks());
         }
         if (m_state.should_count_idle) {
             if (highest_thread != nullptr) [[likely]] {
@@ -351,7 +352,7 @@ void KScheduler::SwitchThread(KThread* next_thread) {
 
     // Update the CPU time tracking variables.
     const s64 prev_tick = m_last_context_switch_time;
-    const s64 cur_tick = m_kernel.System().CoreTiming().GetCPUTicks();
+    const s64 cur_tick = m_kernel.System().CoreTiming().GetClockTicks();
     const s64 tick_diff = cur_tick - prev_tick;
     cur_thread->AddCpuTime(m_core_id, tick_diff);
     if (cur_process != nullptr) {
diff --git a/src/core/hle/kernel/svc/svc_info.cpp b/src/core/hle/kernel/svc/svc_info.cpp
index 2b2c878b5..445cdd87b 100644
--- a/src/core/hle/kernel/svc/svc_info.cpp
+++ b/src/core/hle/kernel/svc/svc_info.cpp
@@ -199,9 +199,9 @@ Result GetInfo(Core::System& system, u64* result, InfoType info_id_type, Handle
         if (same_thread && info_sub_id == 0xFFFFFFFFFFFFFFFF) {
             const u64 thread_ticks = current_thread->GetCpuTime();
 
-            out_ticks = thread_ticks + (core_timing.GetCPUTicks() - prev_ctx_ticks);
+            out_ticks = thread_ticks + (core_timing.GetClockTicks() - prev_ctx_ticks);
         } else if (same_thread && info_sub_id == system.Kernel().CurrentPhysicalCoreIndex()) {
-            out_ticks = core_timing.GetCPUTicks() - prev_ctx_ticks;
+            out_ticks = core_timing.GetClockTicks() - prev_ctx_ticks;
         }
 
         *result = out_ticks;
diff --git a/src/core/hle/kernel/svc/svc_tick.cpp b/src/core/hle/kernel/svc/svc_tick.cpp
index 561336482..7dd7c6e51 100644
--- a/src/core/hle/kernel/svc/svc_tick.cpp
+++ b/src/core/hle/kernel/svc/svc_tick.cpp
@@ -12,16 +12,8 @@ namespace Kernel::Svc {
 int64_t GetSystemTick(Core::System& system) {
     LOG_TRACE(Kernel_SVC, "called");
 
-    auto& core_timing = system.CoreTiming();
-
     // Returns the value of cntpct_el0 (https://switchbrew.org/wiki/SVC#svcGetSystemTick)
-    const u64 result{core_timing.GetClockTicks()};
-
-    if (!system.Kernel().IsMulticore()) {
-        core_timing.AddTicks(400U);
-    }
-
-    return static_cast<int64_t>(result);
+    return static_cast<int64_t>(system.CoreTiming().GetClockTicks());
 }
 
 int64_t GetSystemTick64(Core::System& system) {
diff --git a/src/core/hle/service/hid/hidbus.cpp b/src/core/hle/service/hid/hidbus.cpp
index 5604a6fda..80aac221b 100644
--- a/src/core/hle/service/hid/hidbus.cpp
+++ b/src/core/hle/service/hid/hidbus.cpp
@@ -5,7 +5,6 @@
 #include "common/settings.h"
 #include "core/core.h"
 #include "core/core_timing.h"
-#include "core/core_timing_util.h"
 #include "core/hid/hid_types.h"
 #include "core/hle/kernel/k_event.h"
 #include "core/hle/kernel/k_readable_event.h"
diff --git a/src/core/hle/service/nvdrv/devices/nvdisp_disp0.cpp b/src/core/hle/service/nvdrv/devices/nvdisp_disp0.cpp
index 5a5b2e305..0fe242e9d 100644
--- a/src/core/hle/service/nvdrv/devices/nvdisp_disp0.cpp
+++ b/src/core/hle/service/nvdrv/devices/nvdisp_disp0.cpp
@@ -51,8 +51,8 @@ void nvdisp_disp0::flip(u32 buffer_handle, u32 offset, android::PixelFormat form
                                                stride, format, transform, crop_rect};
 
     system.GPU().RequestSwapBuffers(&framebuffer, fences, num_fences);
-    system.GetPerfStats().EndSystemFrame();
     system.SpeedLimiter().DoSpeedLimiting(system.CoreTiming().GetGlobalTimeUs());
+    system.GetPerfStats().EndSystemFrame();
     system.GetPerfStats().BeginSystemFrame();
 }
 
diff --git a/src/core/hle/service/nvnflinger/nvnflinger.cpp b/src/core/hle/service/nvnflinger/nvnflinger.cpp
index da2d5890f..b41c6240c 100644
--- a/src/core/hle/service/nvnflinger/nvnflinger.cpp
+++ b/src/core/hle/service/nvnflinger/nvnflinger.cpp
@@ -70,7 +70,8 @@ Nvnflinger::Nvnflinger(Core::System& system_, HosBinderDriverServer& hos_binder_
         [this](std::uintptr_t, s64 time,
                std::chrono::nanoseconds ns_late) -> std::optional<std::chrono::nanoseconds> {
             vsync_signal.store(true);
-            vsync_signal.notify_all();
+            { const auto lock_guard = Lock(); }
+            vsync_signal.notify_one();
             return std::chrono::nanoseconds(GetNextTicks());
         });
 
diff --git a/src/core/hle/service/time/clock_types.h b/src/core/hle/service/time/clock_types.h
index e6293ffb9..9fc01ea90 100644
--- a/src/core/hle/service/time/clock_types.h
+++ b/src/core/hle/service/time/clock_types.h
@@ -3,6 +3,8 @@
 
 #pragma once
 
+#include <ratio>
+
 #include "common/common_funcs.h"
 #include "common/common_types.h"
 #include "common/uuid.h"
@@ -74,18 +76,19 @@ static_assert(std::is_trivially_copyable_v<ContinuousAdjustmentTimePoint>,
 /// https://switchbrew.org/wiki/Glue_services#TimeSpanType
 struct TimeSpanType {
     s64 nanoseconds{};
-    static constexpr s64 ns_per_second{1000000000ULL};
 
     s64 ToSeconds() const {
-        return nanoseconds / ns_per_second;
+        return nanoseconds / std::nano::den;
     }
 
     static TimeSpanType FromSeconds(s64 seconds) {
-        return {seconds * ns_per_second};
+        return {seconds * std::nano::den};
     }
 
-    static TimeSpanType FromTicks(u64 ticks, u64 frequency) {
-        return FromSeconds(static_cast<s64>(ticks) / static_cast<s64>(frequency));
+    template <u64 Frequency>
+    static TimeSpanType FromTicks(u64 ticks) {
+        using TicksToNSRatio = std::ratio<std::nano::den, Frequency>;
+        return {static_cast<s64>(ticks * TicksToNSRatio::num / TicksToNSRatio::den)};
     }
 };
 static_assert(sizeof(TimeSpanType) == 8, "TimeSpanType is incorrect size");
diff --git a/src/core/hle/service/time/standard_steady_clock_core.cpp b/src/core/hle/service/time/standard_steady_clock_core.cpp
index 3dbbb9850..5627b7003 100644
--- a/src/core/hle/service/time/standard_steady_clock_core.cpp
+++ b/src/core/hle/service/time/standard_steady_clock_core.cpp
@@ -10,7 +10,7 @@ namespace Service::Time::Clock {
 
 TimeSpanType StandardSteadyClockCore::GetCurrentRawTimePoint(Core::System& system) {
     const TimeSpanType ticks_time_span{
-        TimeSpanType::FromTicks(system.CoreTiming().GetClockTicks(), Core::Hardware::CNTFREQ)};
+        TimeSpanType::FromTicks<Core::Hardware::CNTFREQ>(system.CoreTiming().GetClockTicks())};
     TimeSpanType raw_time_point{setup_value.nanoseconds + ticks_time_span.nanoseconds};
 
     if (raw_time_point.nanoseconds < cached_raw_time_point.nanoseconds) {
diff --git a/src/core/hle/service/time/tick_based_steady_clock_core.cpp b/src/core/hle/service/time/tick_based_steady_clock_core.cpp
index 27600413e..0d9fb3143 100644
--- a/src/core/hle/service/time/tick_based_steady_clock_core.cpp
+++ b/src/core/hle/service/time/tick_based_steady_clock_core.cpp
@@ -10,7 +10,7 @@ namespace Service::Time::Clock {
 
 SteadyClockTimePoint TickBasedSteadyClockCore::GetTimePoint(Core::System& system) {
     const TimeSpanType ticks_time_span{
-        TimeSpanType::FromTicks(system.CoreTiming().GetClockTicks(), Core::Hardware::CNTFREQ)};
+        TimeSpanType::FromTicks<Core::Hardware::CNTFREQ>(system.CoreTiming().GetClockTicks())};
 
     return {ticks_time_span.ToSeconds(), GetClockSourceId()};
 }
diff --git a/src/core/hle/service/time/time.cpp b/src/core/hle/service/time/time.cpp
index 868be60c5..7197ca30f 100644
--- a/src/core/hle/service/time/time.cpp
+++ b/src/core/hle/service/time/time.cpp
@@ -240,8 +240,8 @@ void Module::Interface::CalculateMonotonicSystemClockBaseTimePoint(HLERequestCon
     const auto current_time_point{steady_clock_core.GetCurrentTimePoint(system)};
 
     if (current_time_point.clock_source_id == context.steady_time_point.clock_source_id) {
-        const auto ticks{Clock::TimeSpanType::FromTicks(system.CoreTiming().GetClockTicks(),
-                                                        Core::Hardware::CNTFREQ)};
+        const auto ticks{Clock::TimeSpanType::FromTicks<Core::Hardware::CNTFREQ>(
+            system.CoreTiming().GetClockTicks())};
         const s64 base_time_point{context.offset + current_time_point.time_point -
                                   ticks.ToSeconds()};
         IPC::ResponseBuilder rb{ctx, (sizeof(s64) / 4) + 2};
diff --git a/src/core/hle/service/time/time_sharedmemory.cpp b/src/core/hle/service/time/time_sharedmemory.cpp
index ce1c85bcc..a00676669 100644
--- a/src/core/hle/service/time/time_sharedmemory.cpp
+++ b/src/core/hle/service/time/time_sharedmemory.cpp
@@ -21,8 +21,9 @@ SharedMemory::~SharedMemory() = default;
 
 void SharedMemory::SetupStandardSteadyClock(const Common::UUID& clock_source_id,
                                             Clock::TimeSpanType current_time_point) {
-    const Clock::TimeSpanType ticks_time_span{Clock::TimeSpanType::FromTicks(
-        system.CoreTiming().GetClockTicks(), Core::Hardware::CNTFREQ)};
+    const Clock::TimeSpanType ticks_time_span{
+        Clock::TimeSpanType::FromTicks<Core::Hardware::CNTFREQ>(
+            system.CoreTiming().GetClockTicks())};
     const Clock::SteadyClockContext context{
         static_cast<u64>(current_time_point.nanoseconds - ticks_time_span.nanoseconds),
         clock_source_id};