From: Jérôme Glisse
The event information will be usefull for new user of mmu_notifier API.
The event argument differentiate between a vma disappearing, a page
being write protected or simply a page being unmaped. This allow new
user to take different path for different event for instance on unmap
the resource used to track a vma are still valid and should stay around.
While if the event is saying that a vma is being destroy it means that any
resources used to track this vma can be free.
Changed since v1:
- renamed action into event (updated commit message too).
- simplified the event names and clarified their intented usage
also documenting what exceptation the listener can have in
respect to each event.
Changed since v2:
- Avoid crazy name.
- Do not move code that do not need to move.
Changed since v3:
- Separate hugue page split from mlock/munlock and softdirty.
Changed since v4:
- Rebase (no other changes).
Signed-off-by: Jérôme Glisse
---
drivers/gpu/drm/i915/i915_gem_userptr.c | 3 +-
drivers/iommu/amd_iommu_v2.c| 11 ++-
drivers/misc/sgi-gru/grutlbpurge.c | 9 ++-
drivers/xen/gntdev.c| 9 ++-
fs/proc/task_mmu.c | 6 +-
include/linux/mmu_notifier.h| 131 ++--
kernel/events/uprobes.c | 10 ++-
mm/filemap_xip.c| 2 +-
mm/huge_memory.c| 39 ++
mm/hugetlb.c| 23 +++---
mm/ksm.c| 18 +++--
mm/memory.c | 27 ---
mm/migrate.c| 9 ++-
mm/mmu_notifier.c | 28 ---
mm/mprotect.c | 5 +-
mm/mremap.c | 6 +-
mm/rmap.c | 24 --
virt/kvm/kvm_main.c | 12 ++-
18 files changed, 269 insertions(+), 103 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem_userptr.c
b/drivers/gpu/drm/i915/i915_gem_userptr.c
index d182058..20dbd26 100644
--- a/drivers/gpu/drm/i915/i915_gem_userptr.c
+++ b/drivers/gpu/drm/i915/i915_gem_userptr.c
@@ -129,7 +129,8 @@ restart:
static void i915_gem_userptr_mn_invalidate_range_start(struct mmu_notifier
*_mn,
struct mm_struct *mm,
unsigned long start,
- unsigned long end)
+ unsigned long end,
+ enum mmu_event event)
{
struct i915_mmu_notifier *mn = container_of(_mn, struct
i915_mmu_notifier, mn);
struct interval_tree_node *it = NULL;
diff --git a/drivers/iommu/amd_iommu_v2.c b/drivers/iommu/amd_iommu_v2.c
index 90d734b..57d2acf 100644
--- a/drivers/iommu/amd_iommu_v2.c
+++ b/drivers/iommu/amd_iommu_v2.c
@@ -413,14 +413,17 @@ static int mn_clear_flush_young(struct mmu_notifier *mn,
static void mn_invalidate_page(struct mmu_notifier *mn,
struct mm_struct *mm,
- unsigned long address)
+ unsigned long address,
+ enum mmu_event event)
{
__mn_flush_page(mn, address);
}
static void mn_invalidate_range_start(struct mmu_notifier *mn,
struct mm_struct *mm,
- unsigned long start, unsigned long end)
+ unsigned long start,
+ unsigned long end,
+ enum mmu_event event)
{
struct pasid_state *pasid_state;
struct device_state *dev_state;
@@ -441,7 +444,9 @@ static void mn_invalidate_range_start(struct mmu_notifier
*mn,
static void mn_invalidate_range_end(struct mmu_notifier *mn,
struct mm_struct *mm,
- unsigned long start, unsigned long end)
+ unsigned long start,
+ unsigned long end,
+ enum mmu_event event)
{
struct pasid_state *pasid_state;
struct device_state *dev_state;
diff --git a/drivers/misc/sgi-gru/grutlbpurge.c
b/drivers/misc/sgi-gru/grutlbpurge.c
index 2129274..e67fed1 100644
--- a/drivers/misc/sgi-gru/grutlbpurge.c
+++ b/drivers/misc/sgi-gru/grutlbpurge.c
@@ -221,7 +221,8 @@ void gru_flush_all_tlb(struct gru_state *gru)
*/
static void gru_invalidate_range_start(struct mmu_notifier *mn,
struct mm_struct *mm,
- unsigned long start, unsigned long end)
+ unsigned long start, unsigned long end,
+
