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iommu/exynos: Tell kmemleak to ignore 2nd level page tables 

The pointers to the 2nd level page tables are converted to 1st level
page table entries, which means kmemleak can't find them and assumes
they have been leaked.  Call kmemleak_ignore on the 2nd level page
tables to prevent them from showing up in kmemleak reports.

Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
hifive-unleashed-5.1
Colin Cross 2015-05-08 17:05:44 -07:00 committed by Joerg Roedel
parent 030bbdbf4c
commit dc3814f404
1 changed files with 1 additions and 0 deletions
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drivers/iommu/exynos-iommu.c
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@ -862,6 +862,7 @@ static sysmmu_pte_t *alloc_lv2entry(struct exynos_iommu_domain *priv,
return ERR_PTR(-ENOMEM);
*sent = mk_lv1ent_page(virt_to_phys(pent));
kmemleak_ignore(pent);
*pgcounter = NUM_LV2ENTRIES;
pgtable_flush(pent, pent + NUM_LV2ENTRIES);
pgtable_flush(sent, sent + 1);