perf.c

   1 #include <errno.h>
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <string.h>
   5 #include <unistd.h>
   6 //#include <sys/syscall.h>   /* For SYS_xxx definitions */
   7 #include <asm/unistd.h>
   8
   9 #include "perf.h"
  10 #include "shm.h"
  11 #include "log.h"
  12 #include "sanitise.h"
  13
  14 void open_perf_fds(void)
  15 {
  16         unsigned int i = 0;
  17
  18         while (i < MAX_PERF_FDS) {
  19                 int fd;
  20
  21                 sanitise_perf_event_open(0);
  22                 fd = syscall(__NR_perf_event_open, shm->syscall[0].a1, shm->syscall[0].a2, shm->syscall[0].a3, shm->syscall[0].a4, shm->syscall[0].a5);
  23                 if (fd != -1) {
  24                         shm->perf_fds[i] = fd;
  25                         output(2, "fd[%d] = perf\n", shm->perf_fds[i]);
  26                         i++;
  27                 } else {
  28                         if (errno == ENOSYS)
  29                                 return;
  30                 }
  31         }
  32 }