feat: Add SLAB allocator, Ramdisk, Kernel Namespaces, Event Tracing, NetFilter Firewall, 8-Bit Melodies, and Shell Scripting (sh)

kernel/trace.c

@@ -0,0 +1,61 @@
+#include <kernel/trace.h>
+#include <kernel/task.h>
+#include <arch/x86_64/pit.h>
+#include <lib/string.h>
+#include <kernel/printk.h>
+
+static trace_entry_t trace_buffer[TRACE_BUFFER_SIZE];
+static size_t trace_head = 0;
+static size_t trace_total = 0;
+static bool trace_enabled = true;
+
+void trace_init(void) {
+    memset(trace_buffer, 0, sizeof(trace_buffer));
+    trace_head = 0;
+    trace_total = 0;
+    trace_enabled = true;
+
+    trace_record(TRACE_CAT_SYS, "Kernel Tracing Ringbuffer initialized");
+    printk(KERN_INFO "TRACE: High-performance Kernel Event & Latency Tracer active\n");
+}
+
+void trace_record(trace_category_t cat, const char* msg) {
+    if (!trace_enabled || !msg) return;
+
+    trace_entry_t* entry = &trace_buffer[trace_head];
+    entry->timestamp = pit_get_ticks();
+    entry->cpu_id = 0;
+    entry->pid = (uint32_t)task_get_pid();
+    entry->category = cat;
+    strncpy(entry->message, msg, TRACE_MSG_LEN - 1);
+    entry->message[TRACE_MSG_LEN - 1] = '\0';
+
+    trace_head = (trace_head + 1) % TRACE_BUFFER_SIZE;
+    if (trace_total < TRACE_BUFFER_SIZE) {
+        trace_total++;
+    }
+}
+
+void trace_enable(bool enable) {
+    trace_enabled = enable;
+}
+
+bool trace_is_enabled(void) {
+    return trace_enabled;
+}
+
+void trace_clear(void) {
+    memset(trace_buffer, 0, sizeof(trace_buffer));
+    trace_head = 0;
+    trace_total = 0;
+}
+
+size_t trace_get_count(void) {
+    return trace_total;
+}
+
+const trace_entry_t* trace_get_entry(size_t index) {
+    if (index >= trace_total) return NULL;
+    size_t actual_idx = (trace_head - trace_total + index + TRACE_BUFFER_SIZE) % TRACE_BUFFER_SIZE;
+    return &trace_buffer[actual_idx];
+}