use __builtin_memcpy() instead of unrolled loop

also remove tab and unused import

Signed-off-by: Alexei Starovoitov <[email protected]>

tools/offwaketime.py

@@ -17,11 +17,11 @@
 # Copyright 2016 Netflix, Inc.
 # Licensed under the Apache License, Version 2.0 (the "License")
 #
-# 20-Jan-2016 Brendan Gregg Created this.
+# 20-Jan-2016 Brendan Gregg Created this.
 
 from __future__ import print_function
 from bcc import BPF
-from time import sleep, strftime
+from time import sleep
 import argparse
 import signal
 
@@ -184,37 +184,8 @@ def signal_ignore(signal, frame):
 out:
  woke = wokeby.lookup(&pid);
  if (woke) {
- // unrolled loop (MAXWDEPTH):
- depth = 0;
- key.wret[depth] = woke->ret[depth]; depth++;
- key.wret[depth] = woke->ret[depth]; depth++;
- key.wret[depth] = woke->ret[depth]; depth++;
- key.wret[depth] = woke->ret[depth]; depth++;
- key.wret[depth] = woke->ret[depth]; depth++;
- key.wret[depth] = woke->ret[depth]; depth++;
- key.wret[depth] = woke->ret[depth]; depth++;
- key.wret[depth] = woke->ret[depth]; depth++;
- key.wret[depth] = woke->ret[depth]; depth++;
- key.wret[depth] = woke->ret[depth];
-
- // unrolled loop (TASK_COMM_LEN):
- depth = 0;
- key.waker[depth] = woke->name[depth]; depth++;
- key.waker[depth] = woke->name[depth]; depth++;
- key.waker[depth] = woke->name[depth]; depth++;
- key.waker[depth] = woke->name[depth]; depth++;
- key.waker[depth] = woke->name[depth]; depth++;
- key.waker[depth] = woke->name[depth]; depth++;
- key.waker[depth] = woke->name[depth]; depth++;
- key.waker[depth] = woke->name[depth]; depth++;
- key.waker[depth] = woke->name[depth]; depth++;
- key.waker[depth] = woke->name[depth]; depth++;
- key.waker[depth] = woke->name[depth]; depth++;
- key.waker[depth] = woke->name[depth]; depth++;
- key.waker[depth] = woke->name[depth]; depth++;
- key.waker[depth] = woke->name[depth]; depth++;
- key.waker[depth] = woke->name[depth]; depth++;
- key.waker[depth] = woke->name[depth];
+ __builtin_memcpy(&key.wret, woke->ret, sizeof(key.wret));
+ __builtin_memcpy(&key.waker, woke->name, TASK_COMM_LEN);
  wokeby.delete(&pid);
  }