Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756754Ab3C2TNM (ORCPT ); Fri, 29 Mar 2013 15:13:12 -0400 Received: from mail-vc0-f170.google.com ([209.85.220.170]:33483 "EHLO mail-vc0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756255Ab3C2TNL (ORCPT ); Fri, 29 Mar 2013 15:13:11 -0400 MIME-Version: 1.0 In-Reply-To: <20130329190642.GC23893@redhat.com> References: <1363809337-29718-1-git-send-email-riel@surriel.com> <20130321141058.76e028e492f98f6ee6e60353@linux-foundation.org> <20130326192852.GA25899@redhat.com> <20130326124309.077e21a9f59aaa3f3355e09b@linux-foundation.org> <20130329161746.GA8391@redhat.com> <20130329190642.GC23893@redhat.com> Date: Fri, 29 Mar 2013 12:13:10 -0700 X-Google-Sender-Auth: AC0Kq99DzNO2RBJX5ABrNz9idC4 Message-ID: Subject: Re: ipc,sem: sysv semaphore scalability From: Linus Torvalds To: Dave Jones , Linus Torvalds , Andrew Morton , Rik van Riel , Davidlohr Bueso , Linux Kernel Mailing List , hhuang@redhat.com, "Low, Jason" , Michel Lespinasse , Larry Woodman , "Vinod, Chegu" , Peter Hurley , Stanislav Kinsbursky Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1013 Lines: 25 On Fri, Mar 29, 2013 at 12:06 PM, Dave Jones wrote: > > Btw, something that's really bothering me is just how much bogus > 'follow-on' spew we have lately. I'm not sure what changed, but it > seems to have gotten worse. .. we have many more sanity checks, and they tend to trigger in the case of us killing somebody holding locks etc. > Related: is there any value in printing out all the ? symbols on > kernels with frame pointers enabled ? I've found them useful. You can often see what happened just before. Of course, I'd still prefer gcc not generate unnecessarily big stack frames (which is one of the bigger reasons for old stuff shining through) but as things are, they often give hints about what happened just before. Linus -- 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/