From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Morton Date: Wed, 20 Dec 2006 09:53:59 +0000 Subject: Re: [patch 1/3] ia64: enable CONFIG_DEBUG_SPINLOCK_SLEEP Message-Id: <20061220015359.5fd56742.akpm@osdl.org> List-Id: References: <200612192104.kBJL4gfn010370@shell0.pdx.osdl.net> In-Reply-To: <200612192104.kBJL4gfn010370@shell0.pdx.osdl.net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org On Wed, 20 Dec 2006 10:46:40 +0100 Jes Sorensen wrote: > Andrew Morton wrote: > >> Please don't do this in the sn2 defconfig! Spin lock debugging totally > >> kills scalability. I'll end up with a ton of internal complaints over > >> the kernel not performing if this goes in :-( > > > > Well you tell me how to stop ia64 developers from submitting stuff which > > has stupid bugs which instamanifest for everyone else? It is not uncommon. > > Beat them with a stick? Make it a pointy stick and I can improve on that. I've been thinking that we could do with a CONFIG_RC_KERNEL or something which gets turned on up until -rc4 or so, then gets turned off. So we can make the devel kernels more debugging-friendly. The main problem would be remembering to turn the dang thing off and on at the right times.