| Message ID | 20190219200430.11130-4-jglisse@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | mmu notifier provide context informations | expand |
On 2/19/19 12:04 PM, jglisse@redhat.com wrote: > From: Jérôme Glisse <jglisse@redhat.com> > > Use an unsigned field for flags other than blockable and convert > the blockable field to be one of those flags. > > Signed-off-by: Jérôme Glisse <jglisse@redhat.com> > Cc: Christian König <christian.koenig@amd.com> > Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> > Cc: Jani Nikula <jani.nikula@linux.intel.com> > Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> > Cc: Jan Kara <jack@suse.cz> > Cc: Andrea Arcangeli <aarcange@redhat.com> > Cc: Peter Xu <peterx@redhat.com> > Cc: Felix Kuehling <Felix.Kuehling@amd.com> > Cc: Jason Gunthorpe <jgg@mellanox.com> > Cc: Andrew Morton <akpm@linux-foundation.org> > Cc: Ross Zwisler <zwisler@kernel.org> > Cc: Dan Williams <dan.j.williams@intel.com> > Cc: Paolo Bonzini <pbonzini@redhat.com> > Cc: Radim Krčmář <rkrcmar@redhat.com> > Cc: Michal Hocko <mhocko@kernel.org> > Cc: Christian Koenig <christian.koenig@amd.com> > Cc: Ralph Campbell <rcampbell@nvidia.com> > Cc: John Hubbard <jhubbard@nvidia.com> > Cc: kvm@vger.kernel.org > Cc: dri-devel@lists.freedesktop.org > Cc: linux-rdma@vger.kernel.org > Cc: Arnd Bergmann <arnd@arndb.de> > --- > include/linux/mmu_notifier.h | 11 +++++++---- > 1 file changed, 7 insertions(+), 4 deletions(-) > > diff --git a/include/linux/mmu_notifier.h b/include/linux/mmu_notifier.h > index e630def131ce..c8672c366f67 100644 > --- a/include/linux/mmu_notifier.h > +++ b/include/linux/mmu_notifier.h > @@ -25,11 +25,13 @@ struct mmu_notifier_mm { > spinlock_t lock; > }; > > +#define MMU_NOTIFIER_RANGE_BLOCKABLE (1 << 0) > + > struct mmu_notifier_range { > struct mm_struct *mm; > unsigned long start; > unsigned long end; > - bool blockable; > + unsigned flags; > }; > > struct mmu_notifier_ops { > @@ -229,7 +231,7 @@ extern void __mmu_notifier_invalidate_range(struct mm_struct *mm, > static inline bool > mmu_notifier_range_blockable(const struct mmu_notifier_range *range) > { > - return range->blockable; > + return (range->flags & MMU_NOTIFIER_RANGE_BLOCKABLE); > } > > static inline void mmu_notifier_release(struct mm_struct *mm) > @@ -275,7 +277,7 @@ static inline void > mmu_notifier_invalidate_range_start(struct mmu_notifier_range *range) > { > if (mm_has_notifiers(range->mm)) { > - range->blockable = true; > + range->flags |= MMU_NOTIFIER_RANGE_BLOCKABLE; > __mmu_notifier_invalidate_range_start(range); > } > } > @@ -284,7 +286,7 @@ static inline int > mmu_notifier_invalidate_range_start_nonblock(struct mmu_notifier_range *range) > { > if (mm_has_notifiers(range->mm)) { > - range->blockable = false; > + range->flags &= ~MMU_NOTIFIER_RANGE_BLOCKABLE; > return __mmu_notifier_invalidate_range_start(range); > } > return 0; > @@ -331,6 +333,7 @@ static inline void mmu_notifier_range_init(struct mmu_notifier_range *range, > range->mm = mm; > range->start = start; > range->end = end; > + range->flags = 0; > } > > #define ptep_clear_flush_young_notify(__vma, __address, __ptep) \ > Reviewed-by: Ralph Campbell <rcampbell@nvidia.com>
diff --git a/include/linux/mmu_notifier.h b/include/linux/mmu_notifier.h index e630def131ce..c8672c366f67 100644 --- a/include/linux/mmu_notifier.h +++ b/include/linux/mmu_notifier.h @@ -25,11 +25,13 @@ struct mmu_notifier_mm { spinlock_t lock; }; +#define MMU_NOTIFIER_RANGE_BLOCKABLE (1 << 0) + struct mmu_notifier_range { struct mm_struct *mm; unsigned long start; unsigned long end; - bool blockable; + unsigned flags; }; struct mmu_notifier_ops { @@ -229,7 +231,7 @@ extern void __mmu_notifier_invalidate_range(struct mm_struct *mm, static inline bool mmu_notifier_range_blockable(const struct mmu_notifier_range *range) { - return range->blockable; + return (range->flags & MMU_NOTIFIER_RANGE_BLOCKABLE); } static inline void mmu_notifier_release(struct mm_struct *mm) @@ -275,7 +277,7 @@ static inline void mmu_notifier_invalidate_range_start(struct mmu_notifier_range *range) { if (mm_has_notifiers(range->mm)) { - range->blockable = true; + range->flags |= MMU_NOTIFIER_RANGE_BLOCKABLE; __mmu_notifier_invalidate_range_start(range); } } @@ -284,7 +286,7 @@ static inline int mmu_notifier_invalidate_range_start_nonblock(struct mmu_notifier_range *range) { if (mm_has_notifiers(range->mm)) { - range->blockable = false; + range->flags &= ~MMU_NOTIFIER_RANGE_BLOCKABLE; return __mmu_notifier_invalidate_range_start(range); } return 0; @@ -331,6 +333,7 @@ static inline void mmu_notifier_range_init(struct mmu_notifier_range *range, range->mm = mm; range->start = start; range->end = end; + range->flags = 0; } #define ptep_clear_flush_young_notify(__vma, __address, __ptep) \