Messages in this thread | | | From | Seiji Aguchi <> | Subject | RE: [RFC][PATCH] pstore: Skip spinlock when just one cpu is online | Date | Mon, 10 Dec 2012 23:55:48 +0000 |
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> > If we can fix it with a small patch in adance, it is really helpful for us. > > As I said in my email I just sent, it may not help you without testing it. > As there are probably other problems in that un-tested theoretical scenario.
OK. I understood.
> > > > 2) > > In the long term, I plan to add a kmsg_dump to a kexec path because kdump may fail in the real world. > > In that case, we need another troubleshooting material like pstore to detect a root cause of failure. > > But you are assuming that kmsg_dump is perfect and it isn't, in which case by putting kmsg_dump in the kdump path, you actually may > be blocking kdump from working.
That is why I'm trying to fix problems of pstore in panic path right now. If kmsg_dump/pstore/platform drivers work well in panic path, they work in kdump path as well.
Seiji
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