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

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 [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• Follow-Ups:
  • Re: sched_setscheduler() and usage issues ....please help
    • From: Steven Rostedt <[email protected]>

• References:
  • Re: help needed pls. scheduler(kernel 2.6) + hyperthreaded related questions?
    • From: Nick Piggin <[email protected]>

• Prev by Date: Re: Problems on Apple iBook with ALSA and snd-powermac [2.6.11.5]
• Next by Date: Re: Mac mini sound woes
• Previous by thread: Re: help needed pls. scheduler(kernel 2.6) + hyperthreaded related questions?
• Next by thread: Re: sched_setscheduler() and usage issues ....please help
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]