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| author | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2018-09-26 09:03:53 +0100 |
|---|---|---|
| committer | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2018-09-27 11:26:52 +0100 |
| commit | f8e57863f81f962a1837d6a17825752de5bc23f7 (patch) | |
| tree | 6f46e340dbc3fc58e3db5dfb3834ad6c82e0d2db /drivers/gpu/drm/i915/i915_drv.h | |
| parent | dee4a0f8e70db36105e43dba5652737df5812190 (diff) | |
| download | linux-f8e57863f81f962a1837d6a17825752de5bc23f7.tar.bz2 | |
drm/i915: Trim partial view sg lists
Partial views are small but there can be many of them, and since the sg
list space for them is allocated pessimistically, we can save some slab by
trimming the unused tail entries.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180926080353.20867-1-tvrtko.ursulin@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 9e185f0a822a..ab52657cc3d0 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2325,6 +2325,8 @@ static inline struct scatterlist *__sg_next(struct scatterlist *sg) (((__iter).curr += PAGE_SIZE) >= (__iter).max) ? \ (__iter) = __sgt_iter(__sg_next((__iter).sgp), false), 0 : 0) +bool i915_sg_trim(struct sg_table *orig_st); + static inline unsigned int i915_sg_page_sizes(struct scatterlist *sg) { unsigned int page_sizes; |