1. 18 Jul, 2010 1 commit
    • Linus Torvalds's avatar
      drm/i915: add 'reclaimable' to i915 self-reclaimable page allocations · cd9f040d
      Linus Torvalds authored
      The hibernate issues that got fixed in commit 985b823b ("drm/i915:
      fix hibernation since i915 self-reclaim fixes") turn out to have been
      incomplete.  Vefa Bicakci tested lots of hibernate cycles, and without
      the __GFP_RECLAIMABLE flag the system eventually fails to resume.
      
      With the flag added, Vefa can apparently hibernate forever (or until he
      gets bored running his automated scripts, whichever comes first).
      
      The reclaimable flag was there originally, and was one of the flags that
      were dropped (unintentionally) by commit 4bdadb97 ("drm/i915:
      Selectively enable self-reclaim") that introduced all these problems,
      but I didn't want to just blindly add back all the flags in commit
      985b823b
      
      , and it looked like __GFP_RECLAIM wasn't necessary.  It
      clearly was.
      
      I still suspect that there is some subtle reason we're missing that
      causes the problems, but __GFP_RECLAIMABLE is certainly not wrong to use
      in this context, and is what the code historically used.  And we have no
      idea what the causes the corruption without it.
      Reported-and-tested-by: default avatarM. Vefa Bicakci <bicave@superonline.com>
      Cc: Dave Airlie <airlied@gmail.com>
      Cc: Chris Wilson <chris@chris-wilson.co.uk>
      Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
      Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
      Cc: stable@kernel.org
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      cd9f040d
  2. 02 Jul, 2010 1 commit
  3. 28 May, 2010 9 commits
  4. 26 May, 2010 6 commits
  5. 10 May, 2010 1 commit
  6. 07 May, 2010 1 commit
  7. 23 Apr, 2010 1 commit
  8. 22 Apr, 2010 1 commit
  9. 20 Apr, 2010 5 commits
  10. 19 Apr, 2010 1 commit
    • Daniel Vetter's avatar
      drm/i915: fix tiling limits for i915 class hw v2 · c36a2a6d
      Daniel Vetter authored and Emma Anholt's avatar Emma Anholt committed
      
      
      Current code is definitely crap: Largest pitch allowed spills into
      the TILING_Y bit of the fence registers ... :(
      
      I've rewritten the limits check under the assumption that 3rd gen hw
      has a 3d pitch limit of 8kb (like 2nd gen). This is supported by an
      otherwise totally misleading XXX comment.
      
      This bug mostly resulted in tiling-corrupted pixmaps because the kernel
      allowed too wide buffers to be tiled. Bug brought to the light by the
      xf86-video-intel 2.11 release because that unconditionally enabled
      tiling for pixmaps, relying on the kernel to check things. Tiling for
      the framebuffer was not affected because the ddx does some additional
      checks there ensure the buffer is within hw-limits.
      
      v2: Instead of computing the value that would be written into the
      hw fence registers and then checking the limits simply check whether
      the stride is above the 8kb limit. To better document the hw, add
      some WARN_ONs in i915_write_fence_reg like I've done for the i830
      case (using the right limits).
      Signed-off-by: Daniel Vetter's avatarDaniel Vetter <daniel.vetter@ffwll.ch>
      Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=27449
      
      Tested-by: default avatarAlexander Lam <lambchop468@gmail.com>
      Cc: stable@kernel.org
      Signed-off-by: Emma Anholt's avatarEric Anholt <eric@anholt.net>
      c36a2a6d
  11. 30 Mar, 2010 1 commit
    • Tejun Heo's avatar
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo authored
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
      
      percpu.h is included by sched.h and module.h and thus ends up being
      included when building most .c files.  percpu.h includes slab.h which
      in turn includes gfp.h making everything defined by the two files
      universally available and complicating inclusion dependencies.
      
      percpu.h -> slab.h dependency is about to be removed.  Prepare for
      this change by updating users of gfp and slab facilities include those
      headers directly instead of assuming availability.  As this conversion
      needs to touch large number of source files, the following script is
      used as the basis of conversion.
      
        http://userweb.kernel.org/~tj/misc/slabh-sweep.py
      
      The script does the followings.
      
      * Scan files for gfp and slab usages and update includes such that
        only the necessary includes are there.  ie. if only gfp is used,
        gfp.h, if slab is used, slab.h.
      
      * When the script inserts a new include, it looks at the include
        blocks and try to put the new include such that its order conforms
        to its surrounding.  It's put in the include block which contains
        core kernel includes, in the same order that the rest are ordered -
        alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
        doesn't seem to be any matching order.
      
      * If the script can't find a place to put a new include (mostly
        because the file doesn't have fitting include block), it prints out
        an error message indicating which .h file needs to be added to the
        file.
      
      The conversion was done in the following steps.
      
      1. The initial automatic conversion of all .c files updated slightly
         over 4000 files, deleting around 700 includes and adding ~480 gfp.h
         and ~3000 slab.h inclusions.  The script emitted errors for ~400
         files.
      
      2. Each error was manually checked.  Some didn't need the inclusion,
         some needed manual addition while adding it to implementation .h or
         embedding .c file was more appropriate for others.  This step added
         inclusions to around 150 files.
      
      3. The script was run again and the output was compared to the edits
         from #2
      
       to make sure no file was left behind.
      
      4. Several build tests were done and a couple of problems were fixed.
         e.g. lib/decompress_*.c used malloc/free() wrappers around slab
         APIs requiring slab.h to be added manually.
      
      5. The script was run on all .h files but without automatically
         editing them as sprinkling gfp.h and slab.h inclusions around .h
         files could easily lead to inclusion dependency hell.  Most gfp.h
         inclusion directives were ignored as stuff from gfp.h was usually
         wildly available and often used in preprocessor macros.  Each
         slab.h inclusion directive was examined and added manually as
         necessary.
      
      6. percpu.h was updated not to include slab.h.
      
      7. Build test were done on the following configurations and failures
         were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
         distributed build env didn't work with gcov compiles) and a few
         more options had to be turned off depending on archs to make things
         build (like ipr on powerpc/64 which failed due to missing writeq).
      
         * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
         * powerpc and powerpc64 SMP allmodconfig
         * sparc and sparc64 SMP allmodconfig
         * ia64 SMP allmodconfig
         * s390 SMP allmodconfig
         * alpha SMP allmodconfig
         * um on x86_64 SMP allmodconfig
      
      8. percpu.h modifications were reverted so that it could be applied as
         a separate patch and serve as bisection point.
      
      Given the fact that I had only a couple of failures from tests on step
      6, I'm fairly confident about the coverage of this conversion patch.
      If there is a breakage, it's likely to be something in one of the arch
      headers which should be easily discoverable easily on most builds of
      the specific arch.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Guess-its-ok-by: default avatarChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  12. 25 Mar, 2010 1 commit
  13. 17 Mar, 2010 3 commits
  14. 26 Feb, 2010 8 commits