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kernel/linux-rt-4.4.41/scripts/coccinelle/free/clk_put.cocci 1.23 KB
5113f6f70   김현기   kernel add
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  /// Find missing clk_puts.
  ///
  //# This only signals a missing clk_put when there is a clk_put later
  //# in the same function.
  //# False positives can be due to loops.
  //
  // Confidence: Moderate
  // Copyright: (C) 2012 Julia Lawall, INRIA/LIP6.  GPLv2.
  // Copyright: (C) 2012 Gilles Muller, INRIA/LiP6.  GPLv2.
  // URL: http://coccinelle.lip6.fr/
  // Comments:
  // Options:
  
  virtual context
  virtual org
  virtual report
  
  @clk@
  expression e;
  statement S,S1;
  int ret;
  position p1,p2,p3;
  @@
  
  e = clk_get@p1(...)
  ... when != clk_put(e)
  if (<+...e...+>) S
  ... when any
      when != clk_put(e)
      when != if (...) { ... clk_put(e); ... }
  (
   if (ret == 0) S1
  |
  if (...)
     { ...
       return 0; }
  |
  if (...)
     { ...
       return <+...e...+>; }
  |
  *if@p2 (...)
     { ... when != clk_put(e)
           when forall
       return@p3 ...; }
  )
  ... when any
  clk_put(e);
  
  @script:python depends on org@
  p1 << clk.p1;
  p2 << clk.p2;
  p3 << clk.p3;
  @@
  
  cocci.print_main("clk_get",p1)
  cocci.print_secs("if",p2)
  cocci.print_secs("needed clk_put",p3)
  
  @script:python depends on report@
  p1 << clk.p1;
  p2 << clk.p2;
  p3 << clk.p3;
  @@
  
  msg = "ERROR: missing clk_put; clk_get on line %s and execution via conditional on line %s" % (p1[0].line,p2[0].line)
  coccilib.report.print_report(p3[0],msg)