no need to check state == RUNNING in timer interrupt because

interrupts are always off (i.e. a lock is held) any time the current process is not in RUNNING state.
mit-pdos · Oct 14, 2023 · 2b55250 · 2b55250
1 parent 0c32c04
commit 2b55250
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/kernel/trap.c b/kernel/trap.c
@@ -151,7 +151,7 @@ kerneltrap()
   }
 
   // give up the CPU if this is a timer interrupt.
-  if(which_dev == 2 && myproc() != 0 && myproc()->state == RUNNING)
+  if(which_dev == 2 && myproc() != 0)
     yield();
 
   // the yield() may have caused some traps to occur,