drm/i915: Replace a calloc followed by copying data over it with malloc.

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Execbufs involve quite a bit of payload, to the extent that cache misses
show up in the profiles here, and a suspicion that some of those cachelines
may get evicted and then reloaded in the subsequent copy.

This is still abstracted like drm_calloc_large since we want to check for
size overflow, and because we want to choose between kmalloc and vmalloc
on the fly.  cairo's interface for malloc-with-calloc's-args was used as
the model.

Signed-off-by: Eric Anholt <eric@anholt.net>

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This commit is contained in:

Eric Anholt 2009-11-22 03:49:37 +01:00

parent 5b8f0be0dc

commit c8e0f93a38

2 changed files with 16 additions and 3 deletions

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4

drivers/gpu/drm/i915/i915_gem.c

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19

include/drm/drmP.h

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