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#include <l4/generic/preempt.h>

#include <l4/generic/debug.h>

#include INC_SUBARCH(perfmon.h)

#include INC_GLUE(debug.h)

#if defined (CONFIG_DEBUG_PERFMON_KERNEL)

#define CYCLES_PER_COUNTER_TICKS                                64

void system_measure_syscall_end(unsigned long swi_address)

{

        volatile u64 cnt = perfmon_read_cyccnt() * CYCLES_PER_COUNTER_TICKS;

        unsigned int call_offset = (swi_address & 0xFF) >> 2;

        /* Number of syscalls */

        u64 call_count =

                *(((u64 *)&system_accounting.syscalls) + call_offset);

        /* System call timing structure */

        struct syscall_timing *st =

                (struct syscall_timing *)

                        &system_accounting.syscall_timings + call_offset;

        /* Set min */

        if (st->min == 0)

               st->min = cnt;

        else if (st->min > cnt)

                st->min = cnt;

        /* Set max */

        if (st->max < cnt)

                st->max = cnt;

        st->total += cnt;

        /* Average = total timings / total calls */

        st->avg = st->total / call_count;

        /* Update total */

        system_accounting.syscall_timings.all_total += cnt;

}

#endif