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linux-2.6
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linux-2.6/arch/um/kernel/syscall.c

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C

/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include "kern_util.h"
#include "syscall.h"
#include "os.h"
struct {
int syscall;
int pid;
long result;
unsigned long long start;
unsigned long long end;
} syscall_record[1024];
int record_syscall_start(int syscall)
{
int max, index;
max = sizeof(syscall_record)/sizeof(syscall_record[0]);
index = next_syscall_index(max);
syscall_record[index].syscall = syscall;
syscall_record[index].pid = current_pid();
syscall_record[index].result = 0xdeadbeef;
syscall_record[index].start = os_nsecs();
return(index);
}
void record_syscall_end(int index, long result)
{
syscall_record[index].result = result;
syscall_record[index].end = os_nsecs();
}