sched_setscheduler() and usage issues ....please help

[Arun Srinivas]

I am trying to set the SCHED_FIFO  policy for my process.I am using 
sched_setscheduler() function to do this.

I am following the correct syntax and running it as root process.I am using 
the given syntax i.e.,
int sched_setscheduler(pid_t pid, int policy, const struct sched_param *p);
(SCHED_FIFO for the policy and priority in the range of 1 to 99 for p).

But the function returns with an value of -1. I am trying to call this 
function from the user-space.

1) Is this usage correct?
2)How do I read the error code (i.e., text description of what kiind of 
error occurred like for eg., ESRCH,EPERM,EINVAL).

Please help.

thanks
Arun

_________________________________________________________________
Don't know where to look for your life partner? 
http://www.bharatmatrimony.com/cgi-bin/bmclicks1.cgi?74 Trust 
BharatMatrimony.com

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/