-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 09/22/2014 05:24 PM, Steven Rostedt wrote: > On Mon, 22 Sep 2014 21:11:30 +0200 Oleg Nesterov <[email protected]> > wrote:
>> so this patch doesn't try to change the rules. >> >> But perhaps we can simply remove this preempt_disable/enable? >> >> Or. We can shift rcu_read_unlock() from lock_task_sighand() to >> unlock_task_sighand(). This way we can avoid preempt_disable too, >> but I'd prefer to not do this. > > I really thing the preempt_disable/enable is not needed. > > Paul, Thomas, care to comment? I suspect you are right. On normal kernels, rcu_read_lock() will ensure preemption is disabled. On -rt, the locks within are all sleepable mutexes. Either way, things should be ok. - -- All rights reversed -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAEBAgAGBQJUIV1SAAoJEM553pKExN6DXroIAIFFNLb1tDCHZCmW5q/so0U9 sd0MLhN/oRx9+tZuZw7RfIglTDEukMKuFI7lRvoIkH+uZ9ObRVqjGB35CWNVRaWy wzEyjIPO9OboHTCygBdxmLgC6I9Lg3qFQP2tuwLyEeWJMFylWuDDBtHCmVnbq78G AvUxyz9z+XuFSHLumD+DYMLkYSpMhzzCSSQ7uiOEYP+LA3a2DJuFgNxBvZWQAIu4 j7uWcWLlv3TJYkK7iTudJyXl4DqyhanILh5pHLXIv3w2I0tAycpPv73QH64Qog6S 3R5BoIrfFvfgldx1YaB26lk6jvg3jgi61fSaUx6ZoaMGBM+QBfxiNdI4G7Yn/8k= =EKgM -----END PGP SIGNATURE----- -- 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/
