minor clean

271a4248 · Silas Boyd-Wickizer · 9f5a62ce · 271a4248 · 271a4248 · 271a4248
--- a/kernel/idle.cc
+++ b/kernel/idle.cc
@@ -93,12 +93,10 @@ idleloop(void)
  mtstart(idleloop, myproc());

  sti();
-  sampidle(true);
  for (;;) {
    acquire(&myproc()->lock);
    myproc()->set_state(RUNNABLE);
    sched();
-    sampidle(true);

    finishzombies();


--- a/kernel/sampler.cc
+++ b/kernel/sampler.cc
@@ -26,7 +26,6 @@ struct pmu pmu;
 struct pmulog {
  u64 count;
  u64 capacity;
-  u8 idle:1;                    // Currently idle?
  struct pmuevent *event;
  __padout__;
 } __mpalign__;
@@ -72,12 +71,6 @@ sampdump(void)
 }

 void
-sampidle(bool b)
-{
-  pmulog[myid()].idle = b;
-}
-
-void
 sampconf(void)
 {
  pushcli();
@@ -112,7 +105,7 @@ samplog(struct trapframe *tf)

  e = &l->event[l->count];

-  e->idle = l->idle;
+  e->idle = (myproc() == idleproc());
  e->rip = tf->rip;
  getcallerpcs((void*)tf->rbp, e->trace, NELEM(e->trace));
  l->count++;

--- a/kernel/sched.cc
+++ b/kernel/sched.cc
@@ -74,8 +74,6 @@ sched(void)
      release(&myproc()->lock);
      return;
    }
-  } else {
-    sampidle(false);
  }

  if (next->get_state() != RUNNABLE)