From 84d3428ab34ef79b82c643f704bd8de720298b37 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Tue, 27 Jul 2021 14:38:04 +0200
Subject: [PATCH] Kernel: Remove a handful of unused member functions in
 Processor

---
 Kernel/Arch/x86/Processor.h          | 27 ---------------------------
 Kernel/Arch/x86/common/Processor.cpp | 23 -----------------------
 2 files changed, 50 deletions(-)

diff --git a/Kernel/Arch/x86/Processor.h b/Kernel/Arch/x86/Processor.h
index 1a27e071c7..7a11445649 100644
--- a/Kernel/Arch/x86/Processor.h
+++ b/Kernel/Arch/x86/Processor.h
@@ -217,8 +217,6 @@ public:
     void flush_gdt();
     const DescriptorTablePointer& get_gdtr();
 
-    static Processor& by_id(u32 cpu);
-
     static size_t processor_count() { return processors().size(); }
 
     template<IteratorFunction<Processor&> Callback>
@@ -323,30 +321,6 @@ public:
         return Processor::id() == 0;
     }
 
-    ALWAYS_INLINE u32 raise_irq()
-    {
-        return m_in_irq++;
-    }
-
-    ALWAYS_INLINE void restore_irq(u32 prev_irq)
-    {
-        VERIFY(prev_irq <= m_in_irq);
-        if (!prev_irq) {
-            u32 prev_critical = 0;
-            if (m_in_critical.compare_exchange_strong(prev_critical, 1)) {
-                m_in_irq = prev_irq;
-                deferred_call_execute_pending();
-                auto prev_raised = m_in_critical.exchange(prev_critical);
-                VERIFY(prev_raised == prev_critical + 1);
-                check_invoke_scheduler();
-            } else if (prev_critical == 0) {
-                check_invoke_scheduler();
-            }
-        } else {
-            m_in_irq = prev_irq;
-        }
-    }
-
     ALWAYS_INLINE u32& in_irq()
     {
         return m_in_irq;
@@ -416,7 +390,6 @@ public:
     static void smp_enable();
     bool smp_process_pending_messages();
 
-    static void smp_broadcast(Function<void()>, bool async);
     static void smp_unicast(u32 cpu, Function<void()>, bool async);
     static void smp_broadcast_flush_tlb(const PageDirectory*, VirtualAddress, size_t);
     static u32 smp_wake_n_idle_processors(u32 wake_count);
diff --git a/Kernel/Arch/x86/common/Processor.cpp b/Kernel/Arch/x86/common/Processor.cpp
index 29eed55ae4..8f59b97dbb 100644
--- a/Kernel/Arch/x86/common/Processor.cpp
+++ b/Kernel/Arch/x86/common/Processor.cpp
@@ -576,18 +576,6 @@ ProcessorContainer& Processor::processors()
     return s_processors;
 }
 
-Processor& Processor::by_id(u32 cpu)
-{
-    // s_processors does not need to be protected by a lock of any kind.
-    // It is populated early in the boot process, and the BSP is waiting
-    // for all APs to finish, after which this array never gets modified
-    // again, so it's safe to not protect access to it here
-    auto& procs = processors();
-    VERIFY(procs[cpu] != nullptr);
-    VERIFY(procs.size() > cpu);
-    return *procs[cpu];
-}
-
 void Processor::enter_trap(TrapFrame& trap, bool raise_irq)
 {
     VERIFY_INTERRUPTS_DISABLED();
@@ -922,17 +910,6 @@ void Processor::smp_broadcast_wait_sync(ProcessorMessage& msg)
     smp_return_to_pool(msg);
 }
 
-void Processor::smp_broadcast(Function<void()> callback, bool async)
-{
-    auto& msg = smp_get_from_pool();
-    msg.async = async;
-    msg.type = ProcessorMessage::Callback;
-    new (msg.callback_storage) ProcessorMessage::CallbackFunction(move(callback));
-    smp_broadcast_message(msg);
-    if (!async)
-        smp_broadcast_wait_sync(msg);
-}
-
 void Processor::smp_unicast_message(u32 cpu, ProcessorMessage& msg, bool async)
 {
     auto& cur_proc = Processor::current();