Hi all,
I've been having some difficulty with 3.0pre6e. I'm running a K6/II
666MHz with the fsmlabs 2.4 kernel pre-patched with rtlinux3.0pre6d
patch. The patch has not changed between 6d and 6e versions.
Originally my box would freeze when calling rtlinux_sigprocmask.
This seemed to be fixed when I upgraded from gcc-2.91.66 to gcc-2.95.1.
rtlsigtimer_app.c in the regression directory needs updating for the
periodic mode to work. So I've been using the attached code which will
either crash the machine or print
current has no ->mm, not calling
after anytime from a minute to a couple of hours (painful!).
This is the same behaviour I was seeing in 3.0pre6d. No other modules
are installed aside from rtlinux stock modules - all the ones to depmod
psc.
As a precaution, I've since recompiled the kernel with -march=386 and
occasionally instead of crashing, I'll get a segmentation fault. I
don't see any core files though.
ulimit reports 'unlimited' so I was expecting to see a core file.
I'll get to the point...
o How do I enable core dumps to be saved?
o Has anyone else been using the the periodic timers
is rtl_sigaction(beside the example in ./regression/)?
Any problems?
o If someone has a chance, could they compile the
attached code on their 3.0pre6e box and run it
for a couple of hours?
thanks!
stuart warren
#include <sys/ioctl.h>
#include <linux/isdn.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <rtlinux_signal.h>
unsigned long Send_Data;
volatile unsigned long *pSend_Data;
void transmission_handler(int unused)
{
(*pSend_Data)++;
}
int main()
{
struct rtlinux_sigaction sig;
Send_Data = 0;
pSend_Data = &Send_Data;
sig.sa_flags = 0;
sig.sa_period = 10000000LL;
sig.sa_handler = transmission_handler;
if (rtlinux_sigaction(RTLINUX_SIGTIMER0, &sig, NULL)) {
printf("Coundn't get timer\n");
perror("rtlinux_sigaction");
return -1;
}
printf("\n");
while(1) {
printf("Send_Data = %ld\r", Send_Data);
fflush(stdout);
usleep(200000);
}
sig.sa_handler = RTLINUX_SIG_IGN;
rtlinux_sigaction(RTLINUX_SIGTIMER0, &sig, NULL);
return EXIT_SUCCESS;
}
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