From: Borislav Petkov <bp@alien8.de>
To: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: linux-acpi@vger.kernel.org, Huang Ying <ying.huang@intel.com>,
Tony Luck <tony.luck@intel.com>,
Linux Edac Mailing List <linux-edac@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH EDAC 07/13] edac: add support for raw error reports
Date: Fri, 15 Feb 2013 17:02:57 +0100 [thread overview]
Message-ID: <20130215160257.GK14387@pd.tnic> (raw)
In-Reply-To: <20130215134929.3909cfa2@redhat.com>
On Fri, Feb 15, 2013 at 01:49:29PM -0200, Mauro Carvalho Chehab wrote:
> Sure, but calling kmalloc while handling a memory error doesn't seem
> a very good idea, IMHO. So, better to either use an already allocated
> space (or the stack).
Either that, or prealloc a buffer on EDAC initialization. You probably
won't need more than one in 99% of the cases so if you keep it simple
with a single static buffer for starters, that would probably be the
cleanest solution.
> Yes, I know, but, on the other hand, there's the additional cost of
> copying almost all data into the structure.
That's very easily paralelizable on out-of-order CPUs (I'd say, all of
them which need to run EDAC, can do that :-)) so it wouldn't hurt.
Also, you could allocate the struct in the callers and work directly
with its members before sending it down to edac_raw_mc_handle_error() -
that would probably simplify the code a bit more.
> Ok, I'll keep this patch on my git. I'll likely fold it with the
> previous one on the final patchset.
Yep.
Thanks.
--
Regards/Gruss,
Boris.
Sent from a fat crate under my desk. Formatting is fine.
--
next prev parent reply other threads:[~2013-02-15 16:03 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-15 12:44 [PATCH EDAC 00/13] Add a driver to report Firmware first errors (via GHES) Mauro Carvalho Chehab
2013-02-15 12:44 ` [PATCH EDAC 01/13] edac: lock module owner to avoid error report conflicts Mauro Carvalho Chehab
2013-02-15 12:44 ` [PATCH EDAC 02/13] ghes: move structures/enum to a header file Mauro Carvalho Chehab
2013-02-15 12:44 ` [PATCH EDAC 03/13] ghes: add the needed hooks for EDAC error report Mauro Carvalho Chehab
2013-02-21 1:26 ` Huang Ying
2013-02-21 12:04 ` Mauro Carvalho Chehab
2013-02-22 0:45 ` Huang Ying
2013-02-22 8:50 ` Mauro Carvalho Chehab
2013-02-22 8:57 ` Mauro Carvalho Chehab
2013-02-25 0:25 ` Huang Ying
2013-02-15 12:44 ` [PATCH EDAC 04/13] edac: add a new memory layer type Mauro Carvalho Chehab
2013-02-15 12:44 ` [PATCH EDAC 05/13] ghes_edac: Register at EDAC core the BIOS report Mauro Carvalho Chehab
2013-02-15 12:44 ` [PATCH EDAC 06/13] ghes_edac: Allow registering more than once Mauro Carvalho Chehab
2013-02-15 12:44 ` [PATCH EDAC 07/13] edac: add support for raw error reports Mauro Carvalho Chehab
2013-02-15 14:13 ` Borislav Petkov
2013-02-15 15:25 ` Mauro Carvalho Chehab
2013-02-15 15:41 ` Borislav Petkov
2013-02-15 15:49 ` Mauro Carvalho Chehab
2013-02-15 16:02 ` Borislav Petkov [this message]
2013-02-15 18:20 ` Mauro Carvalho Chehab
2013-02-16 16:57 ` Borislav Petkov
2013-02-17 10:44 ` Mauro Carvalho Chehab
2013-02-18 13:52 ` Borislav Petkov
2013-02-18 15:24 ` Mauro Carvalho Chehab
2013-02-19 11:56 ` Mauro Carvalho Chehab
2013-02-15 12:44 ` [PATCH EDAC 08/13] ghes_edac: add support for reporting errors via EDAC Mauro Carvalho Chehab
2013-02-15 12:44 ` [PATCH EDAC 09/13] ghes_edac: do a better job of filling EDAC DIMM info Mauro Carvalho Chehab
2013-02-15 12:44 ` [PATCH EDAC 10/13] edac: better report error conditions in debug mode Mauro Carvalho Chehab
2013-02-15 12:44 ` [PATCH EDAC 11/13] edac: initialize the core earlier Mauro Carvalho Chehab
2013-02-15 12:45 ` [PATCH EDAC 12/13] ghes_edac.c: Don't credit the same memory dimm twice Mauro Carvalho Chehab
2013-02-15 12:45 ` [PATCH EDAC 13/13] ghes_edac: Improve driver's printk messages Mauro Carvalho Chehab
2013-02-15 16:38 ` Joe Perches
2013-02-15 17:33 ` Mauro Carvalho Chehab
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