AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

agp/intel-gtt: Remove get/put_pages

Browse Source 
If a page isn't allocated as __GFP_MOVEABLE it won't move around, so
no need to grab a reference to lock it into place.

Discovered while reviewing page allocation handling in i915 gem.

Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
This commit is contained in:
Daniel Vetter 2014-09-12 15:20:24 +02:00
parent c04d016124
commit f77c44b902
1 changed files with 0 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/char/agp/intel-gtt.c
View File

@ -153,7 +153,6 @@ static struct page *i8xx_alloc_pages(void)
__free_pages(page, 2);
return NULL;
}
get_page(page);
atomic_inc(&agp_bridge->current_memory_agp);
return page;
}
@ -164,7 +163,6 @@ static void i8xx_destroy_pages(struct page *page)
return;
set_pages_wb(page, 4);
put_page(page);
__free_pages(page, 2);
atomic_dec(&agp_bridge->current_memory_agp);
}
@ -300,7 +298,6 @@ static int intel_gtt_setup_scratch_page(void)
page = alloc_page(GFP_KERNEL | GFP_DMA32 | __GFP_ZERO);
if (page == NULL)
return -ENOMEM;
get_page(page);
set_pages_uc(page, 1);
if (intel_private.needs_dmar) {
@ -560,7 +557,6 @@ static void intel_gtt_teardown_scratch_page(void)
set_pages_wb(intel_private.scratch_page, 1);
pci_unmap_page(intel_private.pcidev, intel_private.scratch_page_dma,
PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
put_page(intel_private.scratch_page);
__free_page(intel_private.scratch_page);
}