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  1. 01 Aug, 2003 5 commits
    • Andrew Morton's avatar
      [PATCH] update to speedstep-centrino.c · 1a14aeea
      Andrew Morton authored 
      From: Jeremy Fitzhardinge <jeremy@goop.org>

The 900MHz Pentium M has two spaces before the frequency:
"Intel(R) Pentium(R) M processor  900MHz"

This patch adds a 2nd CPU macro (_CPU) which also takes the
stringified speed so that extra spacing can be added.
      1a14aeea
    • Andrew Morton's avatar
      [PATCH] buffer.c debugging · e6238ac5
      Andrew Morton authored 
      We get a bug report about once per month wherein find_get_block_slow() spits
an error message.  For some reason we have buffers against a blockdev page
which have the incorrect b_size.

Probably, an earlier set_blcoksize() failed to invalidate all the apges for
some reason.  I just don't know.

The patch adds a bit of extra debug info to aid in diagnosing this.
      e6238ac5
    • Andrew Morton's avatar
      [PATCH] re-slabify i386 pgd's and pmd's · 6beadb3b
      Andrew Morton authored 
      From: William Lee Irwin III <wli@holomorphy.com>

The original pgd/pmd slabification patches had a critical bug on
non-PAE where both modifications of pgd entries to remove pagetables
attached for non-PSE mappings back to a PSE state and modifications of
pgd entries to attach pagetables to bring PSE mappings into a non-PSE
state were not propagated to cached pgd's. PAE was immune to it owing
to the shared kernel pmd.

The following patch vs. 2.5.69 restores the slabification done to cache
preconstructed pagetables with the proper propagation of conversions
to and from PSE mappings to cached pgd's for the non-PAE case.

This is an optimization to reduce the bitblitting overhead for spawning
small tasks (for larger ones, bottom-level pagetable copies dominate)
primarily on non-PAE; the PAE code change is largely to remove #ifdefs
and to treat the two cases uniformly, though some positive but small
performance improvement has been observed for PAE in one of mbligh's
posts. The non-PAE performance improvement has been observed on a box
running a script-heavy end-user workload as a large long-term profile
hit count reduction for pgd_alloc() and relatives thereof.

I would very much appreciate outside testers. Even though I've been
able to verify this boots and runs properly and survives several cycles
of restarting X on my non-PAE Thinkpad T21, that environment has never
been able to reproduce the bug. Those with the proper graphics hardware
to prod the affected codepaths into action are the ones best suited to
verify proper functionality. There is also some locking introduced; if
some performance verification on non-PAE SMP i386 targets (my SMP
targets unfortunately all require PAE due to arch code dependencies)
that also have the proper hardware could be done, that would help
determine whether alternative locking schemes that competed against
the one shown here are preferable (in particular, the ticket-based
scheme mentioned in the comments).
      6beadb3b
    • Andrew Morton's avatar
      [PATCH] selinux merge · 7bbf0e05
      Andrew Morton authored 
      From Stephen Smalley <sds@epoch.ncsc.mil>

This has been in -mm for a few weeks and James Morris has been
regression testing each release.
      7bbf0e05
    • Andrew Morton's avatar
      [PATCH] misc fixes · ad55c575
      Andrew Morton authored 
      - remove unneeded loglevel manipulation in journal_dirty_metadata()

- remove crud which was acidentally added to blkmtd.c

- remove unused vars in mxser.c (Vinay K Nallamothu <vinay-rc@naturesoft.net>)

- PF_LESS_THROTTLE was using the wrong bit (Joe Korty <joe.korty@ccur.com>)

- unused var in cyclades.c ("Krishnakumar. R" <krishnakumar@naturesoft.net>)
      ad55c575
  3. 31 Jul, 2003 35 commits
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