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authorLinus Torvalds <torvalds@linux-foundation.org>2019-03-09 15:53:03 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-03-09 15:53:03 -0800
commita50243b1ddcdd766d0d17fbfeeb1a22e62fdc461 (patch)
tree3dbf847105558eaac3658a46c4934df503c866a2 /kernel
parent2901752c14b8e1b7dd898d2e5245c93e531aa624 (diff)
parentfca22e7e595f1799cfbfdfa13e16d48ece0d136c (diff)
downloadlinux-a50243b1ddcdd766d0d17fbfeeb1a22e62fdc461.tar.bz2
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe: "This has been a slightly more active cycle than normal with ongoing core changes and quite a lot of collected driver updates. - Various driver fixes for bnxt_re, cxgb4, hns, mlx5, pvrdma, rxe - A new data transfer mode for HFI1 giving higher performance - Significant functional and bug fix update to the mlx5 On-Demand-Paging MR feature - A chip hang reset recovery system for hns - Change mm->pinned_vm to an atomic64 - Update bnxt_re to support a new 57500 chip - A sane netlink 'rdma link add' method for creating rxe devices and fixing the various unregistration race conditions in rxe's unregister flow - Allow lookup up objects by an ID over netlink - Various reworking of the core to driver interface: - drivers should not assume umem SGLs are in PAGE_SIZE chunks - ucontext is accessed via udata not other means - start to make the core code responsible for object memory allocation - drivers should convert struct device to struct ib_device via a helper - drivers have more tools to avoid use after unregister problems" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (280 commits) net/mlx5: ODP support for XRC transport is not enabled by default in FW IB/hfi1: Close race condition on user context disable and close RDMA/umem: Revert broken 'off by one' fix RDMA/umem: minor bug fix in error handling path RDMA/hns: Use GFP_ATOMIC in hns_roce_v2_modify_qp cxgb4: kfree mhp after the debug print IB/rdmavt: Fix concurrency panics in QP post_send and modify to error IB/rdmavt: Fix loopback send with invalidate ordering IB/iser: Fix dma_nents type definition IB/mlx5: Set correct write permissions for implicit ODP MR bnxt_re: Clean cq for kernel consumers only RDMA/uverbs: Don't do double free of allocated PD RDMA: Handle ucontext allocations by IB/core RDMA/core: Fix a WARN() message bnxt_re: fix the regression due to changes in alloc_pbl IB/mlx4: Increase the timeout for CM cache IB/core: Abort page fault handler silently during owning process exit IB/mlx5: Validate correct PD before prefetch MR IB/mlx5: Protect against prefetch of invalid MR RDMA/uverbs: Store PR pointer before it is overwritten ...
Diffstat (limited to 'kernel')
-rw-r--r--kernel/cgroup/rdma.c5
-rw-r--r--kernel/events/core.c8
-rw-r--r--kernel/fork.c2
3 files changed, 6 insertions, 9 deletions
diff --git a/kernel/cgroup/rdma.c b/kernel/cgroup/rdma.c
index d3bbb757ee49..1d75ae7f1cb7 100644
--- a/kernel/cgroup/rdma.c
+++ b/kernel/cgroup/rdma.c
@@ -313,10 +313,8 @@ EXPORT_SYMBOL(rdmacg_try_charge);
* If IB stack wish a device to participate in rdma cgroup resource
* tracking, it must invoke this API to register with rdma cgroup before
* any user space application can start using the RDMA resources.
- * Returns 0 on success or EINVAL when table length given is beyond
- * supported size.
*/
-int rdmacg_register_device(struct rdmacg_device *device)
+void rdmacg_register_device(struct rdmacg_device *device)
{
INIT_LIST_HEAD(&device->dev_node);
INIT_LIST_HEAD(&device->rpools);
@@ -324,7 +322,6 @@ int rdmacg_register_device(struct rdmacg_device *device)
mutex_lock(&rdmacg_mutex);
list_add_tail(&device->dev_node, &rdmacg_devices);
mutex_unlock(&rdmacg_mutex);
- return 0;
}
EXPORT_SYMBOL(rdmacg_register_device);
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 5f59d848171e..f7086c388781 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -5473,7 +5473,7 @@ static void perf_mmap_close(struct vm_area_struct *vma)
/* now it's safe to free the pages */
atomic_long_sub(rb->aux_nr_pages, &mmap_user->locked_vm);
- vma->vm_mm->pinned_vm -= rb->aux_mmap_locked;
+ atomic64_sub(rb->aux_mmap_locked, &vma->vm_mm->pinned_vm);
/* this has to be the last one */
rb_free_aux(rb);
@@ -5546,7 +5546,7 @@ again:
*/
atomic_long_sub((size >> PAGE_SHIFT) + 1, &mmap_user->locked_vm);
- vma->vm_mm->pinned_vm -= mmap_locked;
+ atomic64_sub(mmap_locked, &vma->vm_mm->pinned_vm);
free_uid(mmap_user);
out_put:
@@ -5694,7 +5694,7 @@ accounting:
lock_limit = rlimit(RLIMIT_MEMLOCK);
lock_limit >>= PAGE_SHIFT;
- locked = vma->vm_mm->pinned_vm + extra;
+ locked = atomic64_read(&vma->vm_mm->pinned_vm) + extra;
if ((locked > lock_limit) && perf_paranoid_tracepoint_raw() &&
!capable(CAP_IPC_LOCK)) {
@@ -5735,7 +5735,7 @@ accounting:
unlock:
if (!ret) {
atomic_long_add(user_extra, &user->locked_vm);
- vma->vm_mm->pinned_vm += extra;
+ atomic64_add(extra, &vma->vm_mm->pinned_vm);
atomic_inc(&event->mmap_count);
} else if (rb) {
diff --git a/kernel/fork.c b/kernel/fork.c
index 874e48c410f8..9dcd18aa210b 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -980,7 +980,7 @@ static struct mm_struct *mm_init(struct mm_struct *mm, struct task_struct *p,
mm_pgtables_bytes_init(mm);
mm->map_count = 0;
mm->locked_vm = 0;
- mm->pinned_vm = 0;
+ atomic64_set(&mm->pinned_vm, 0);
memset(&mm->rss_stat, 0, sizeof(mm->rss_stat));
spin_lock_init(&mm->page_table_lock);
spin_lock_init(&mm->arg_lock);