Re: [PATCH, repost] ARM: VIPT cache coherency fix

["Mikko Rapeli" <mikko.rapeli%teleca.com@localhost>]

On Mon, Jan 12, 2009 at 12:34:56AM -0800, Matt Thomas wrote:
> Is your kernel built with PMAPCOUNTERS?  What's the output of "vmstat - 
> e | grep pmap" ?

pmap prefer nochange                         318471        1 misc
pmap prefer change                           427533        1 misc
pmap activations                          146776830      592 misc
pmap collects                                  1945        0 misc
pmap updates                               73633642      297 misc
pmap exec pages discarded (DG)                   48        0 misc
pmap exec pages discarded (PP)                67007        0 misc
pmap exec pages discarded (UM)               163919        0 misc
pmap exec pages synced (KU)                      15        0 misc
pmap exec pages synced (DG)                   20081        0 misc
pmap exec pages synced (RM)                  342684        1 misc
pmap exec pages synced (UM)                     563        0 misc
pmap exec pages synced (MP)                  202396        0 misc
pmap exec pages synced                       565733        2 misc
pmap exec pages mapped                     24296376       98 misc
pmap page table pages mapped                      9        0 misc
pmap kenter pages unmapped                 16105878       65 misc
pmap kenter pages mapped                   25056806      101 misc
pmap kernel pages unmapped                 28159955      113 misc
pmap kernel pages mapped                   28162079      113 misc
pmap pages remapped                         4714467       19 misc
pmap pages unmapped                        81782112      330 misc
pmap pages mapped                          81784963      330 misc
pmap restore page color                       21625        0 misc
pmap erase page color                         21625        0 misc
pmap change page color                     17579410       71 misc
pmap blind page color                       9719845       39 misc
pmap ok page color                         59169434      238 misc
pmap new page color                           13933        0 misc
pmap flush page (2+ colors, kmpage)              1715        0 misc
pmap flush page (2+ colors)                 4337446       17 misc
pmap flush page (1 color)                  15473133       62 misc
pmap clean page (1 color)                  18901687       76 misc

> We aren't seeing any corruption problem with the latest pmap fixes.
> How quickly did your corruption manifest?

Builds started around 2009-01-09 15:00, failed build log file time stamps:

2009-01-09 18:23
2009-01-09 22:07
2009-01-10 04:41
2009-01-11 05:51
2009-01-11 09:33
2009-01-12 07:58

> Anything else in the kernel?

Nope. To build the userspace I had to use a MKRUMP=no patch since rump
stuff wasn't compiling once again.

-Mikko

 
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