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| author | Chen Feng <puck.chen@hisilicon.com> | 2016-05-19 03:03:16 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-08-21 15:38:49 (GMT) |
| commit | e7f63771b60e7802c5a9b437c5ab1a8e33a0bb35 (patch) | |
| tree | ee9680ee49b4f37f801b83b5b5ec0ecba777259d /drivers/staging/android/ion/ion_priv.h | |
| parent | 1f0c9efe5627ed12b469dae7434795ed625936bf (diff) | |
| download | linux-e7f63771b60e7802c5a9b437c5ab1a8e33a0bb35.tar.xz | |
ION: Sys_heap: Add cached pool to spead up cached buffer alloc
Add ion cached pool in system heap. This patch add a cached pool
in system heap. It has a great improvement of alloc for cached
buffer.
With memory pressue alloc test 800MB in userspace used iontest.
The result avg is 577ms. Without patch it's avg is about 883ms.
v1: Makes the cached buffer zeroed before going to pool
v2: Add cached param in pool to distinguish wheather need to flush
cache at a fresh alloc.
Rework the shrink function.
Signed-off-by: Chen Feng <puck.chen@hisilicon.com>
Signed-off-by: Xia Qing <saberlily.xia@hisilicon.com>
Reviewed-by: Fu Jun <oliver.fu@hisilicon.com>
Acked-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/android/ion/ion_priv.h')
| -rw-r--r-- | drivers/staging/android/ion/ion_priv.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/staging/android/ion/ion_priv.h b/drivers/staging/android/ion/ion_priv.h index 25e4bb2..5eed5e2 100644 --- a/drivers/staging/android/ion/ion_priv.h +++ b/drivers/staging/android/ion/ion_priv.h @@ -332,6 +332,7 @@ void ion_cma_heap_destroy(struct ion_heap *); * @gfp_mask: gfp_mask to use from alloc * @order: order of pages in the pool * @list: plist node for list of pools + * @cached: it's cached pool or not * * Allows you to keep a pool of pre allocated pages to use from your heap. * Keeping a pool of pages that is ready for dma, ie any cached mapping have @@ -341,6 +342,7 @@ void ion_cma_heap_destroy(struct ion_heap *); struct ion_page_pool { int high_count; int low_count; + bool cached; struct list_head high_items; struct list_head low_items; struct mutex mutex; @@ -349,7 +351,8 @@ struct ion_page_pool { struct plist_node list; }; -struct ion_page_pool *ion_page_pool_create(gfp_t gfp_mask, unsigned int order); +struct ion_page_pool *ion_page_pool_create(gfp_t gfp_mask, unsigned int order, + bool cached); void ion_page_pool_destroy(struct ion_page_pool *); struct page *ion_page_pool_alloc(struct ion_page_pool *); void ion_page_pool_free(struct ion_page_pool *, struct page *); |