Messages in this thread | | | Date | Sat, 4 Aug 2012 07:16:08 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH v2] printk: add option to print cpu id |
| |
On Fri, Aug 03, 2012 at 09:46:15AM -0700, Pandita, Vikram wrote: > I mostly work with ARM Soc - specifically on OMAP. SMP multi core > systems in ARM-v7 world started to show up only few years back - > unlike x86 world.
This is exactly the thing: other SMP vendors have made it so far without emitting which core is doing what in dmesg.
> ARM systems are a bit unique when it comes to security( read trust > zone ), and handling of FIQ's. Most of the ARM cortex-A series SoC's > out there have some kind of affinity to CPU0 being the master. One use > case has been, it has helped to know with this printk logging, if such > constraints are honored. > > Sometimes, tracking of some lockup cases between cpu's because of bad > code has also been helpful with this logging support. For now i will > post v3 of the patch and add arm-list and linux-omap list, and there > might be users there can benefit.
Right, so if arm people need this thing, why not make it arm-only? I still fail to see the need for this (... at all, actually).
Thanks.
-- Regards/Gruss, Boris.
| |