init.cmd Start USB poller, list devices, list processes, Fix cpu_find_lightest () crashing bug

kernel/amd64/intr.h

@@ -31,31 +31,6 @@ struct saved_regs {
   uint64_t ss;
 } PACKED;
 
-struct ksaved_regs {
-  /* regs */
-  uint64_t r15;
-  uint64_t r14;
-  uint64_t r13;
-  uint64_t r12;
-  uint64_t r11;
-  uint64_t r10;
-  uint64_t r9;
-  uint64_t r8;
-  uint64_t rbx;
-  uint64_t rbp;
-  uint64_t rdi;
-  uint64_t rsi;
-  uint64_t rdx;
-  uint64_t rcx;
-  uint64_t rax;
-  /* interrupt stuff */
-  uint64_t trap;
-  uint64_t error;
-  uint64_t rip;
-  uint64_t cs;
-  uint64_t rflags;
-} PACKED;
-
 void idt_load (void);
 void intr_init (void);
 

kernel/amd64/sched1.c

@@ -14,6 +14,8 @@
 void do_sched (struct proc* proc, spin_lock_t* cpu_lock, uint64_t lockflags) {
   uint64_t fp;
 
+  __asm__ volatile ("cli");
+
   spin_lock (&proc->lock, &fp);
 
   thiscpu->tss.rsp0 = proc->pdata.kernel_stack;
@@ -28,9 +30,7 @@ void do_sched (struct proc* proc, spin_lock_t* cpu_lock, uint64_t lockflags) {
   fx_restore (proc->pdata.fx_env);
 
   spin_unlock (&proc->lock, fp);
-  spin_unlock (cpu_lock, lockflags);
-
-  __asm__ volatile ("cli");
+  spin_unlock (cpu_lock, 0);
 
   do_sched1 ((void*)&regs, cr3);
 }

kernel/amd64/smp.c

@@ -59,7 +59,7 @@ struct cpu* cpu_find_lightest (void) {
   uint64_t fc;
   struct limine_mp_response* mp = limine_mp_request.response;
 
-  int start = atomic_fetch_add (&last_cpu_index, 1) % mp->cpu_count;
+  int start = thiscpu->id;
 
   struct cpu* best_cpu = &cpus[start];
 
@@ -80,6 +80,9 @@ struct cpu* cpu_find_lightest (void) {
       best_load = l;
       best_cpu = cpu;
     }
+
+    if (best_load == 0)
+      break;
   }
 
   return best_cpu;