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Kernel: List all CPUs in /proc/cpuinfo

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Tom 2020-06-27 17:06:33 -06:00 • committed by Andreas Kling
parent fb41d89384
commit d98edb3171
12 changed files with 229 additions and 64 deletions
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25
Kernel/Arch/i386/CPU.cpp
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@ -28,6 +28,7 @@
#include <AK/String.h>
#include <AK/Types.h>
#include <Kernel/Arch/i386/CPU.h>
#include <Kernel/Arch/i386/ProcessorInfo.h>
#include <Kernel/Arch/i386/ISRStubs.h>
#include <Kernel/Interrupts/APIC.h>
#include <Kernel/Interrupts/GenericInterruptHandler.h>
@ -795,6 +796,22 @@ u32 read_dr6()
FPUState Processor::s_clean_fpu_state;
static Vector<Processor*>* s_processors;
Vector<Processor*>& Processor::processors()
{
ASSERT(s_processors);
return *s_processors;
}
Processor& Processor::by_id(u32 cpu)
{
auto& procs = processors();
ASSERT(procs[cpu] != nullptr);
ASSERT(procs.size() > cpu);
return *procs[cpu];
}
void Processor::initialize(u32 cpu)
{
m_self = this;
@ -817,6 +834,14 @@ void Processor::initialize(u32 cpu)
: "=m"(s_clean_fpu_state));
}
m_info = new ProcessorInfo(*this);
if (!s_processors)
s_processors = new Vector<Processor*>();
if (cpu >= s_processors->size())
s_processors->resize(cpu + 1);
(*s_processors)[cpu] = this;
klog() << "CPU #" << cpu << " using Processor at " << VirtualAddress(FlatPtr(this));
}