Re: [microblaze-uclinux] 10 msec number of ticks bug..

[Prasad <ndprasad@xxxxxxxxx>]

John,
The sigaction seems to have problem with optimisation "0". The system
reboots/hangs for signal14 and other signals (if we send signal couple
of times). I used the modified test code send by bret sometime back.
This is with the latest IRQ patch you posted.
BTW, this works ok for optimisation 1 and 2 and s.

I have attached the code and the makefile i used to compile. Please
let me know if you can repeat this.

Thanx
- Prasad

On 9/5/06, John Williams <jwilliams@xxxxxxxxxxxxxx> wrote:
> Hi Prasad,
>
> Prasad wrote:
>
> > From the priliminary test i did today, the patch that you posted for
> > the "stability under heavy load"  seems to be solving my problem.
>
> OK, that's good news.
>
> > John, i also get the following error sometimes. I posted this in
> > uclinux-dev and did  google-ing and i didn't get any convincing
> > answer/reasons for the occurance.  Most of the message points as a
> > harmless problem although i am not sure on this. Do u have any idea on
> > this/usual suspects.
> > =======================================
> > <4>Aug 28 22:53:41 kernel: ksize on unknown page type (index=34)!
> > <4>Aug 28 23:00:25 last message repeated 755 time(s)
> > <4>Aug 28 23:00:25 kernel: ksize on unknown page type (index=32)!
> > <4>Aug 28 23:02:06 last message repeated 188 time(s)
> > <4>Aug 28 23:02:06 kernel: ksize on unknown page type (index=34)!
> > ================================================
>
> It doesn't look right.  I'd be putting a breakpoint in the ksize() function
> where it generates that error, then run the system until it traps.  Look at the
> stack and see where it's being called from.
>
> Cheers,
>
> John
>
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#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <signal.h>


void
test_sig_usr1_hdlr(int signal, siginfo_t *info, void *unused)
{
	printf ("in test sig usr1 hdlr\n");
}

int main (int argc, char * argv[] )
{

	int sock;
	struct sockaddr_in myaddr, cliaddr;
	char msgbuf [1000];
	socklen_t clilen;
	int msglen;
	int count;

#if 1
	struct sigaction tstSignalActions;
	sigset_t tstSignals;
#else
	__sighandler_t tstSignalActions;
#endif

    	int err;
    	extern int errno;

#if 1
	sigemptyset(&tstSignals);
	tstSignalActions.sa_mask      = tstSignals;
//	tstSignalActions.sa_flags     = SA_RESTART | SA_SIGINFO;
//	tstSignalActions.sa_flags     = SA_RESTART;
	tstSignalActions.sa_flags     = 0;
	tstSignalActions.sa_sigaction   = test_sig_usr1_hdlr;
//	err = sigaction(SIGUSR1, &tstSignalActions, NULL);
	for (count = 0; count < 32; count++)
		err = sigaction(count, &tstSignalActions, NULL);
#else
	err = signal (SIGUSR1, &tstSignalActions);
#endif


        memset (&myaddr, 0, sizeof (myaddr));
	sock = socket (PF_INET, SOCK_DGRAM, 0);
        myaddr.sin_family = AF_INET;
	myaddr.sin_port = htons (11111);
	myaddr.sin_addr.s_addr = htonl (INADDR_ANY);

	bind (sock, (struct sockaddr *) &myaddr, sizeof (myaddr));

        // blocked on Listening on udp port 11111

	while (1) {
		clilen=sizeof(cliaddr);
		msglen=recvfrom(sock,msgbuf,1000,0, ( struct sockaddr *)  &cliaddr,&clilen);
		printf ("msg received\n");
		continue;
	}
}

Attachment: Makefile
Description: Binary data