Re: oprofile can cause an NMI to schedule (was: [RT] scheduling and oprofile)

On Tue, 24 Oct 2006, John Levon wrote:

> On Mon, Oct 23, 2006 at 10:24:34PM -0400, Steven Rostedt wrote:
>
>
> in_atomic() is supposed to be true in this context, so the test in
> do_page_fault() catches it.
>


	/*
	 * If we're in an interrupt, have no user context or are running in an
	 * atomic region then we must not take the fault..
	 */
	if (in_atomic() || !mm)
		goto bad_area_nosemaphore;


Ahh, missed that one.  So this is an issue that _only_ rt needs to fix.
OK, thanks for pointing that out.

-- Steve

-
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: oprofile can cause an NMI to schedule (was: [RT] scheduling and oprofile)
    • From: Mike Kravetz <[email protected]>

• References:
  • [RT] scheduling and oprofile
    • From: Mike Kravetz <[email protected]>
  • oprofile can cause an NMI to schedule (was: [RT] scheduling and oprofile)
    • From: Steven Rostedt <[email protected]>
  • Re: oprofile can cause an NMI to schedule (was: [RT] scheduling and oprofile)
    • From: John Levon <[email protected]>

• Prev by Date: Re: [KJ][PATCH] Correct misc_register return code handling in several drivers
• Next by Date: Re: [PATCH 1/13] KVM: userspace interface
• Previous by thread: Re: oprofile can cause an NMI to schedule (was: [RT] scheduling and oprofile)
• Next by thread: Re: oprofile can cause an NMI to schedule (was: [RT] scheduling and oprofile)
• 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]