From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sun, 20 May 2007 09:08:09 -0700 From: Stephen Hemminger Subject: Re: signals logged / [RFC] log out-of-virtual-memory events Message-ID: <20070520090809.4f42d71d@freepuppy> In-Reply-To: <20070520112111.GN14578@vanheusden.com> References: <464C81B5.8070101@users.sourceforge.net> <464C9D82.60105@redhat.com> <200705181347.14256.ak@suse.de> <20070520001418.GJ14578@vanheusden.com> <464FC6AA.2060805@cosmosbay.com> <20070520112111.GN14578@vanheusden.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Folkert van Heusden Cc: Eric Dumazet , Jan Engelhardt , Andi Kleen , Rik van Riel , righiandr@users.sourceforge.net, LKML , linux-mm@kvack.org List-ID: On Sun, 20 May 2007 13:21:11 +0200 Folkert van Heusden wrote: > > >>>>I do not see such on i386, so why for x86_64? > > >>>So that you know that one of your programs crashed. That's a feature. > > >>This feature could be handy for i386 too. > > >Since 2.6.18.2 I use this patch. With 2.6.21.1 it still applies altough > > >with a small offsets. Works like a charm. > > > > > >Signed-off by: Folkert van Heusden > > >--- linux-2.6.18.2/kernel/signal.c 2006-11-04 02:33:58.000000000 +0100 > > >+++ linux-2.6.18.2.new/kernel/signal.c 2006-11-17 15:59:13.000000000 +0100 > ... > > >+ sig, t -> pid, t -> uid, t -> gid, t -> comm); > > > > Please check line 219 of Documentation/CodingStyle, Section 3.1: Spaces > > and no space around the '.' and "->" structure member operators. > > New version without the spaces around '->' and a nice 'unlikely' added. > > Signed-off by: Folkert van Heusden > > --- linux-2.6.18.2/kernel/signal.c 2006-11-04 02:33:58.000000000 +0100 > +++ linux-2.6.18.2.new/kernel/signal.c 2006-11-17 15:59:13.000000000 +0100 > @@ -706,6 +706,15 @@ > struct sigqueue * q = NULL; > int ret = 0; > > + if (unlikely(sig == SIGQUIT || sig == SIGILL || sig == SIGTRAP || > + sig == SIGABRT || sig == SIGBUS || sig == SIGFPE || > + sig == SIGSEGV || sig == SIGXCPU || sig == SIGXFSZ || > + sig == SIGSYS || sig == SIGSTKFLT)) > + { > + printk(KERN_WARNING "Sig %d send to %d owned by %d.%d (%s)\n", > + sig, t->pid, t->uid, t->gid, t->comm); > + } > + > /* > * fast-pathed signals for kernel-internal things like SIGSTOP > * or SIGKILL. > > > Folkert van Heusden > Would turning that into a switch() generate better code. -- Stephen Hemminger -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org