On Sun, Dec 19, 2010 at 6:47 PM, Huang Ying <ying.huang@xxxxxxxxx> wrote: > 8KB is about 100-200 lines message, sometimes it may be not enough for > all necessary information. But in fact, we can use multiple ERST > records to save one kernel message dumping. So the real limitation is > just total storage capacity. We can - but it will be a bit messy within my pstore + platform driver framework (I'd have to have erst tell pstore that it could handle some larger size, 2x or 3x the actual record size and then break a write into pieces. Presumably re-assemble on the read side too). It would be good to get some data from real users to see whether this is required, or whether ~8K actually is adequate in enough situations to allow us to keep the code simple. If anyone with a fairly new X86 server system (up to a couple of years old ... check to see whether it has ERST support in BIOS with: "dmesg | grep ERST") wants to test this, the latest code is in today's linux-next tree, tagged as "next-20101220". (I have some hope that we might get this together for the 2.6.38 merge window ... but if not, then 2.6.39 would be fine too). -Tony -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
