You should have CC'd the ION maintainers/lists per ./scripts/get_maintainer.pl - CCing now.
On 3/14/19 12:06 PM, Zhaoyang Huang wrote: > From: Zhaoyang Huang <zhaoyang.hu...@unisoc.com> > > Two action for this patch: > 1. set a batch size for system heap's shrinker, which can have it buffer > reasonable page blocks in pool for future allocation. > 2. reverse the order sequence when free page blocks, the purpose is also > to have system heap keep as more big blocks as it can. > > By testing on an android system with 2G RAM, the changes with setting > batch = 48MB can help reduce the fragmentation obviously and improve > big block allocation speed for 15%. > > Signed-off-by: Zhaoyang Huang <zhaoyang.hu...@unisoc.com> > --- > drivers/staging/android/ion/ion_heap.c | 12 +++++++++++- > drivers/staging/android/ion/ion_system_heap.c | 2 +- > 2 files changed, 12 insertions(+), 2 deletions(-) > > diff --git a/drivers/staging/android/ion/ion_heap.c > b/drivers/staging/android/ion/ion_heap.c > index 31db510..9e9caf2 100644 > --- a/drivers/staging/android/ion/ion_heap.c > +++ b/drivers/staging/android/ion/ion_heap.c > @@ -16,6 +16,8 @@ > #include <linux/vmalloc.h> > #include "ion.h" > > +unsigned long ion_heap_batch = 0; > + > void *ion_heap_map_kernel(struct ion_heap *heap, > struct ion_buffer *buffer) > { > @@ -303,7 +305,15 @@ int ion_heap_init_shrinker(struct ion_heap *heap) > heap->shrinker.count_objects = ion_heap_shrink_count; > heap->shrinker.scan_objects = ion_heap_shrink_scan; > heap->shrinker.seeks = DEFAULT_SEEKS; > - heap->shrinker.batch = 0; > + heap->shrinker.batch = ion_heap_batch; > > return register_shrinker(&heap->shrinker); > } > + > +static int __init ion_system_heap_batch_init(char *arg) > +{ > + ion_heap_batch = memparse(arg, NULL); > + > + return 0; > +} > +early_param("ion_batch", ion_system_heap_batch_init); > diff --git a/drivers/staging/android/ion/ion_system_heap.c > b/drivers/staging/android/ion/ion_system_heap.c > index 701eb9f..d249f8d 100644 > --- a/drivers/staging/android/ion/ion_system_heap.c > +++ b/drivers/staging/android/ion/ion_system_heap.c > @@ -182,7 +182,7 @@ static int ion_system_heap_shrink(struct ion_heap *heap, > gfp_t gfp_mask, > if (!nr_to_scan) > only_scan = 1; > > - for (i = 0; i < NUM_ORDERS; i++) { > + for (i = NUM_ORDERS - 1; i >= 0; i--) { > pool = sys_heap->pools[i]; > > if (only_scan) { > _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel