From: jglisse@redhat.com
To: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org,
"Jérôme Glisse" <jglisse@redhat.com>,
"Christian König" <christian.koenig@amd.com>,
"Joonas Lahtinen" <joonas.lahtinen@linux.intel.com>,
"Jani Nikula" <jani.nikula@linux.intel.com>,
"Rodrigo Vivi" <rodrigo.vivi@intel.com>,
"Jan Kara" <jack@suse.cz>,
"Andrea Arcangeli" <aarcange@redhat.com>,
"Peter Xu" <peterx@redhat.com>,
"Felix Kuehling" <Felix.Kuehling@amd.com>,
"Jason Gunthorpe" <jgg@mellanox.com>,
"Ross Zwisler" <zwisler@kernel.org>,
"Dan Williams" <dan.j.williams@intel.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Radim Krčmář" <rkrcmar@redhat.com>,
"Michal Hocko" <mhocko@kernel.org>,
"Ralph Campbell" <rcampbell@nvidia.com>,
"John Hubbard" <jhubbard@nvidia.com>,
kvm@vger.kernel.org, dri-devel@lists.freedesktop.org,
linux-rdma@vger.kernel.org, "Arnd Bergmann" <arnd@arndb.de>
Subject: [PATCH v5 3/9] mm/mmu_notifier: convert mmu_notifier_range->blockable to a flags
Date: Tue, 19 Feb 2019 15:04:24 -0500 [thread overview]
Message-ID: <20190219200430.11130-4-jglisse@redhat.com> (raw)
In-Reply-To: <20190219200430.11130-1-jglisse@redhat.com>
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) \
--
2.17.2
next prev parent reply other threads:[~2019-02-19 20:05 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-19 20:04 [PATCH v5 0/9] mmu notifier provide context informations jglisse
2019-02-19 20:04 ` [PATCH v5 1/9] mm/mmu_notifier: helper to test if a range invalidation is blockable jglisse
2019-02-22 19:01 ` Ralph Campbell
2019-02-19 20:04 ` [PATCH v5 2/9] mm/mmu_notifier: convert user range->blockable to helper function jglisse
2019-02-22 19:02 ` Ralph Campbell
2019-02-19 20:04 ` jglisse [this message]
2019-02-22 19:04 ` [PATCH v5 3/9] mm/mmu_notifier: convert mmu_notifier_range->blockable to a flags Ralph Campbell
2019-02-19 20:04 ` [PATCH v5 4/9] mm/mmu_notifier: contextual information for event enums jglisse
2019-02-22 19:26 ` Ralph Campbell
2019-02-19 20:04 ` [PATCH v5 5/9] mm/mmu_notifier: contextual information for event triggering invalidation v2 jglisse
2019-02-22 21:25 ` Ralph Campbell
2019-02-19 20:04 ` [PATCH v5 6/9] mm/mmu_notifier: use correct mmu_notifier events for each invalidation jglisse
2019-02-22 22:07 ` Ralph Campbell
2019-02-19 20:04 ` [PATCH v5 7/9] mm/mmu_notifier: pass down vma and reasons why mmu notifier is happening v2 jglisse
2019-02-22 22:08 ` Ralph Campbell
2019-02-19 20:04 ` [PATCH v5 8/9] mm/mmu_notifier: mmu_notifier_range_update_to_read_only() helper jglisse
2019-02-22 22:42 ` Ralph Campbell
2019-02-19 20:04 ` [PATCH v5 9/9] mm/mmu_notifier: set MMU_NOTIFIER_USE_CHANGE_PTE flag where appropriate v2 jglisse
2019-02-22 23:01 ` Ralph Campbell
2019-02-19 20:15 ` [PATCH v5 0/9] mmu notifier provide context informations Dan Williams
2019-02-19 20:30 ` Jerome Glisse
2019-02-19 20:40 ` Jason Gunthorpe
2019-02-19 20:49 ` Dan Williams
2019-02-19 20:40 ` Dan Williams
2019-02-19 20:57 ` Jerome Glisse
2019-02-19 21:19 ` Dan Williams
2019-02-19 21:30 ` Jerome Glisse
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