> > I use perfmon2 with linux-2.6.30, libpfm-3.9 on intel
> xeon x5482.
> >
> > I am trying to get asynchronous overflow notification
> (instrn retired) in my controlling process, (for child
> process ls) by doing fcntl on perfmon2 context fd. (sampling
> period = 1000)
> >
> > I do standard signal handler installation for SIGIO
> (tried with SIGPOLL also)
> >
> > I do following after creating the perfmon2 context.
> >
> > fcntl(fd, F_SETFL, O_ASYNC);
> > fcntl(fd, F_SETOWN, getpid());
> > fcntl(fd, F_SETSIG, SIGPOLL); //have tried with
> commenting this i.e. with
> > //default
> SIGIO also
> > fcntl(fd, F_SETFD, FD_CLOEXEC);
> >
> > In my signal handler I perform read, but get unknown
> message type: 10.
> >
> Where do you get the fd from in the handler?
I collect fd from siginfo->si_fd in the signal handler.
>
> Are you doing self-monitoring or monitoring of another
> process?
I am monitoring the child from parent.
Regards,
Jitendra
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