100 lines
1.9 KiB
C
100 lines
1.9 KiB
C
#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <linux/perf_event.h>
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#include <asm/unistd.h>
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//#include "perftool.h"
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#define WORKSIZE (1024 * 1024 * 32)
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#define LOOPSIZE 1000000
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#define REP 1000
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long
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perf_event_open(struct perf_event_attr *hw_event, pid_t pid,
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int cpu, int group_fd, unsigned long flags)
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{
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int ret;
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ret = syscall(__NR_perf_event_open, hw_event, pid, cpu,
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group_fd, flags);
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return ret;
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}
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long
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pe_opener(long group_fd, int mode, int type, unsigned long config)
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{
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struct perf_event_attr pe;
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int fd;
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long long perf_hw_cache_id;
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long long perf_hw_cache_op_id;
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long long perf_hw_cache_op_result_id;
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memset(&pe, 0, sizeof(struct perf_event_attr));
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pe.type = type;
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pe.size = sizeof(struct perf_event_attr);
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pe.config = config;
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pe.disabled = 1;
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if (mode & 0x01) {
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pe.exclude_user = 1; // EXCLUDE EVENTS THAT HAPPEN IN USER-SPACE
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} else {
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pe.exclude_user = 0; // INCLUDE EVENTS THAT HAPPEN IN USER-SPACE
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}
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if (mode & 0x02) {
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pe.exclude_kernel = 1; // EXCUDE EVENTS THAT HAPPEN IN KERNEL-SPACE
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} else {
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pe.exclude_kernel = 0; // INCUDE EVENTS THAT HAPPEN IN KERNEL-SPACE
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}
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pe.exclude_hv = 1;
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if (group_fd > 0) {
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pe.read_format = PERF_FORMAT_GROUP;
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}
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fd = perf_event_open(&pe, 0, -1, group_fd, 0);
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return fd;
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}
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long long
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hw_cache_build(long long id, long long op_id, long long op_result_id)
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{
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return (id) | (op_id << 8) | (op_result_id << 16);
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}
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void
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memory_task()
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{
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char* work = malloc(WORKSIZE);
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char* fromaddr;
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char* toaddr;
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double r;
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int offset;
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int i;
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for (i = 0; i < LOOPSIZE; i++) {
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r = drand48();
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offset = (int)(r * (double)WORKSIZE);
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fromaddr = work + offset;
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r = drand48();
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offset = (int)(r * (double)WORKSIZE);
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toaddr = work + offset;
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*toaddr = *fromaddr;
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}
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}
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void
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calc_task()
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{
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int i, j;
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double tmp;
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for (i = 0; i < REP; i++) {
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for (j = 0; j < REP; j++) {
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tmp = drand48() * drand48();
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}
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}
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}
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