evie/android_kernel_oneplus_msm8998
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Revert "msm: kgsl: Do not memset pages to zero while adding to pool"

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This reverts commit 90d6246fca5f288606551c5d02af920bfeb05b9b.

To address the launch latency issue seen because of increase in
memory allocation time.

Change-Id: I147ca8607337541b7a29056b4bd1b46aa374c6e3
Signed-off-by: Deepak Kumar <dkumar@codeaurora.org>
This commit is contained in:
Deepak Kumar 2017-09-12 10:35:49 +05:30 • committed by Timi
parent 84526e8406
commit e06f77fa89
1 changed files with 16 additions and 6 deletions
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22
drivers/gpu/msm/kgsl_pool.c
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@ -65,19 +65,26 @@ _kgsl_get_pool_from_order(unsigned int order)
/* Map the page into kernel and zero it out */ /* Map the page into kernel and zero it out */
static void static void
_kgsl_pool_zero_page(struct page *p) _kgsl_pool_zero_page(struct page *p, unsigned int pool_order)
{ {
void *addr = kmap_atomic(p); int i;
memset(addr, 0, PAGE_SIZE); for (i = 0; i < (1 << pool_order); i++) {
dmac_flush_range(addr, addr + PAGE_SIZE); struct page *page = nth_page(p, i);
kunmap_atomic(addr); void *addr = kmap_atomic(page);
memset(addr, 0, PAGE_SIZE);
dmac_flush_range(addr, addr + PAGE_SIZE);
kunmap_atomic(addr);
}
} }
/* Add a page to specified pool */ /* Add a page to specified pool */
static void static void
_kgsl_pool_add_page(struct kgsl_page_pool *pool, struct page *p) _kgsl_pool_add_page(struct kgsl_page_pool *pool, struct page *p)
{ {
_kgsl_pool_zero_page(p, pool->pool_order);
spin_lock(&pool->list_lock); spin_lock(&pool->list_lock);
list_add_tail(&p->lru, &pool->page_list); list_add_tail(&p->lru, &pool->page_list);
pool->page_count++; pool->page_count++;
@ -322,6 +329,7 @@ int kgsl_pool_alloc_page(int *page_size, struct page **pages,
} else } else
return -ENOMEM; return -ENOMEM;
} }
_kgsl_pool_zero_page(page, order);
goto done; goto done;
} }
@ -341,6 +349,7 @@ int kgsl_pool_alloc_page(int *page_size, struct page **pages,
page = alloc_pages(gfp_mask, order); page = alloc_pages(gfp_mask, order);
if (page == NULL) if (page == NULL)
return -ENOMEM; return -ENOMEM;
_kgsl_pool_zero_page(page, order);
goto done; goto done;
} }
} }
@ -370,12 +379,13 @@ int kgsl_pool_alloc_page(int *page_size, struct page **pages,
} else } else
return -ENOMEM; return -ENOMEM;
} }
_kgsl_pool_zero_page(page, order);
} }
done: done:
for (j = 0; j < (*page_size >> PAGE_SHIFT); j++) { for (j = 0; j < (*page_size >> PAGE_SHIFT); j++) {
p = nth_page(page, j); p = nth_page(page, j);
_kgsl_pool_zero_page(p);
pages[pcount] = p; pages[pcount] = p;
pcount++; pcount++;
} }