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author | Balbir Singh <bsingharora@gmail.com> | 2017-05-02 15:17:04 +1000 |
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committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-06-05 19:03:10 +1000 |
commit | de3b87611dd1f3c00f4e42fe298457260ea781e0 (patch) | |
tree | 77fc83dc2b9ac76f71600757674d959c4a6a33fe /net/bridge/br_stp_if.c | |
parent | c5cee6421cd651446b93c231f0ab8ff2530ba25d (diff) |
powerpc/mm/book(e)(3s)/64: Add page table accounting
Introduce a helper pgtable_gfp_flags() which
just returns the current gfp flags and adds
__GFP_ACCOUNT to account for page table allocation.
The generic helper is added to include/asm/pgalloc.h
and has two variants - WARNING ugly bits ahead
1. If the header is included from a module, no check
for mm == &init_mm is done, since init_mm is not
exported
2. For kernel includes, the check is done and required
see (3e79ec7 arch: x86: charge page tables to kmemcg)
The fundamental assumption is that no module should be
doing pgd/pud/pmd and pte alloc's on behalf of init_mm
directly.
NOTE: This adds an overhead to pmd/pud/pgd allocations
similar to x86. The other alternative was to implement
pmd_alloc_kernel/pud_alloc_kernel and pgd_alloc_kernel
with their offset variants.
For 4k page size, pte_alloc_one no longer calls
pte_alloc_one_kernel.
Signed-off-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'net/bridge/br_stp_if.c')
0 files changed, 0 insertions, 0 deletions