Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965146AbVI0X1H (ORCPT ); Tue, 27 Sep 2005 19:27:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751162AbVI0X1H (ORCPT ); Tue, 27 Sep 2005 19:27:07 -0400 Received: from h80ad2583.async.vt.edu ([128.173.37.131]:43694 "EHLO h80ad2583.async.vt.edu") by vger.kernel.org with ESMTP id S1751160AbVI0X1G (ORCPT ); Tue, 27 Sep 2005 19:27:06 -0400 Message-Id: <200509272326.j8RNQqHM031916@turing-police.cc.vt.edu> X-Mailer: exmh version 2.7.2 01/07/2005 with nmh-1.1-RC3 To: "Davda, Bhavesh P (Bhavesh)" Cc: Daniel Jacobowitz , linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH] New SA_NOPRNOTIF sigaction flag In-Reply-To: Your message of "Tue, 27 Sep 2005 08:45:07 MDT." <21FFE0795C0F654FAD783094A9AE1DFC086EFADA@cof110avexu4.global.avaya.com> From: Valdis.Kletnieks@vt.edu References: <21FFE0795C0F654FAD783094A9AE1DFC086EFADA@cof110avexu4.global.avaya.com> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_1127863610_31960P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Date: Tue, 27 Sep 2005 19:26:51 -0400 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1374 Lines: 34 --==_Exmh_1127863610_31960P Content-Type: text/plain; charset=us-ascii On Tue, 27 Sep 2005 08:45:07 MDT, "Davda, Bhavesh P (Bhavesh)" said: > Then propose an alternative way where a real-time (SCHED_FIFO/SCHED_RR) > CPU bound application getting lots of SEGVs for normal operation doesn't If it's RT, *and* CPU-bound, *and* tossing enough SEGV's to matter, it's a train wreck waiting to happen. If something attaches to that locomotive with a ptrace(), making sure that a SEGV doesn't cause a priority inversion merely delays the wreck until the *next* thing the debugger is interested in. What's *next*, prohibit the overhead of whatever "stop at" or "trace value" command the debugger has? By the time you clean all of that stuff up, you're basically left with "why bother allowing a ptrace()?". --==_Exmh_1127863610_31960P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (GNU/Linux) Comment: Exmh version 2.5 07/13/2001 iD8DBQFDOdU6cC3lWbTT17ARAklGAKDhC6mgyFF/q7zqoUpTb/G+ahk8eQCfTJiR AzuDvvwDGP295exvQb96/30= =ZpUF -----END PGP SIGNATURE----- --==_Exmh_1127863610_31960P-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/