arch/um/kernel/syscall.c

   1 /*
   2  * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
   3  * Licensed under the GPL
   4  */
   5
   6 #include "kern_util.h"
   7 #include "syscall.h"
   8 #include "os.h"
   9
  10 struct {
  11         int syscall;
  12         int pid;
  13         long result;
  14         unsigned long long start;
  15         unsigned long long end;
  16 } syscall_record[1024];
  17
  18 int record_syscall_start(int syscall)
  19 {
  20         int max, index;
  21
  22         max = sizeof(syscall_record)/sizeof(syscall_record[0]);
  23         index = next_syscall_index(max);
  24
  25         syscall_record[index].syscall = syscall;
  26         syscall_record[index].pid = current_pid();
  27         syscall_record[index].result = 0xdeadbeef;
  28         syscall_record[index].start = os_nsecs();
  29         return(index);
  30 }
  31
  32 void record_syscall_end(int index, long result)
  33 {
  34         syscall_record[index].result = result;
  35         syscall_record[index].end = os_nsecs();
  36 }