AK: Remove bitrotted Traits::dump() mechanism

This was only used by HashTable::dump() which I used when doing the
first HashTable implementation. Removing this allows us to also remove
most includes of <AK/kstdio.h>.

Kernel/Devices/FullDevice.cpp

@@ -26,7 +26,6 @@
 
 #include "FullDevice.h"
 #include <AK/StdLibExtras.h>
-#include <AK/kstdio.h>
 #include <LibC/errno_numbers.h>
 
 FullDevice::FullDevice()

Kernel/Devices/NullDevice.cpp

@@ -26,7 +26,6 @@
 
 #include "NullDevice.h"
 #include <AK/StdLibExtras.h>
-#include <AK/kstdio.h>
 
 static NullDevice* s_the;
 

Kernel/Devices/ZeroDevice.cpp

@@ -26,7 +26,6 @@
 
 #include "ZeroDevice.h"
 #include <AK/StdLibExtras.h>
-#include <AK/kstdio.h>
 
 ZeroDevice::ZeroDevice()
     : CharacterDevice(1, 5)

Kernel/FileSystem/FileSystem.h

@@ -34,7 +34,6 @@
 #include <AK/RefPtr.h>
 #include <AK/String.h>
 #include <AK/WeakPtr.h>
-#include <AK/kstdio.h>
 #include <Kernel/Devices/BlockDevice.h>
 #include <Kernel/FileSystem/InodeIdentifier.h>
 #include <Kernel/FileSystem/InodeMetadata.h>
@@ -128,7 +127,6 @@ namespace AK {
 template<>
 struct Traits<InodeIdentifier> : public GenericTraits<InodeIdentifier> {
     static unsigned hash(const InodeIdentifier& inode) { return pair_int_hash(inode.fsid(), inode.index()); }
-    static void dump(const InodeIdentifier& inode) { kprintf("%02u:%08u", inode.fsid(), inode.index()); }
 };
 
 }

Kernel/Net/IPv4SocketTuple.h

@@ -79,11 +79,6 @@ struct Traits<IPv4SocketTuple> : public GenericTraits<IPv4SocketTuple> {
         auto h2 = pair_int_hash(tuple.peer_address().to_u32(), tuple.peer_port());
         return pair_int_hash(h1, h2);
     }
-
-    static void dump(const IPv4SocketTuple& tuple)
-    {
-        kprintf("%s", tuple.to_string().characters());
-    }
 };
 
 }

Kernel/Net/MACAddress.h

@@ -82,7 +82,6 @@ namespace AK {
 template<>
 struct Traits<MACAddress> : public GenericTraits<MACAddress> {
     static unsigned hash(const MACAddress& address) { return string_hash((const char*)&address, sizeof(address)); }
-    static void dump(const MACAddress& address) { kprintf("%s", address.to_string().characters()); }
 };
 
 }

Kernel/ProcessTracer.cpp

@@ -24,7 +24,6 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <AK/kstdio.h>
 #include <Kernel/ProcessTracer.h>
 
 ProcessTracer::ProcessTracer(pid_t pid)

Kernel/SharedBuffer.cpp

@@ -100,6 +100,8 @@ void* SharedBuffer::ref_for_process_and_get_address(Process& process)
 void SharedBuffer::share_with(pid_t peer_pid)
 {
     LOCKER(shared_buffers().lock());
+    if (m_global)
+        return;
     for (auto& ref : m_refs) {
         if (ref.pid == peer_pid) {
             // don't increment the reference count yet; let them get_shared_buffer it first.

Kernel/TestModule.cpp

@@ -25,7 +25,6 @@
  */
 
 #include <Kernel/Process.h>
-#include <LibBareMetal/Output/kstdio.h>
 
 extern "C" const char module_name[] = "TestModule";
 

Kernel/VM/MemoryManager.cpp

@@ -27,7 +27,6 @@
 #include "CMOS.h"
 #include "Process.h"
 #include <AK/Assertions.h>
-#include <AK/kstdio.h>
 #include <Kernel/Arch/i386/CPU.h>
 #include <Kernel/FileSystem/Inode.h>
 #include <Kernel/Multiboot.h>

Kernel/init.cpp

@@ -70,7 +70,6 @@
 #include <Kernel/TTY/PTYMultiplexer.h>
 #include <Kernel/TTY/VirtualConsole.h>
 #include <Kernel/VM/MemoryManager.h>
-#include <LibBareMetal/Output/kstdio.h>
 
 [[noreturn]] static void init_stage2();
 static void setup_serial_debug();