RDMA/efa: Count mmap failures (eca5757f) · Commits · 戴 / test

drivers/infiniband/hw/efa/efa.h

+2 −1

Original line number	Diff line number	Diff line
		/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
		/*
		* Copyright 2018-2019 Amazon.com, Inc. or its affiliates. All rights reserved.
		* Copyright 2018-2020 Amazon.com, Inc. or its affiliates. All rights reserved.
		*/

		#ifndef _EFA_H_
		@@ -40,6 +40,7 @@ struct efa_sw_stats {
		atomic64_t reg_mr_err;
		atomic64_t alloc_ucontext_err;
		atomic64_t create_ah_err;
		atomic64_t mmap_err;
		};

		/* Don't use anything other than atomic64 */

+7 −2

Original line number	Diff line number	Diff line
		@@ -44,7 +44,8 @@ struct efa_user_mmap_entry {
		op(EFA_CREATE_CQ_ERR, "create_cq_err") \
		op(EFA_REG_MR_ERR, "reg_mr_err") \
		op(EFA_ALLOC_UCONTEXT_ERR, "alloc_ucontext_err") \
		op(EFA_CREATE_AH_ERR, "create_ah_err")
		op(EFA_CREATE_AH_ERR, "create_ah_err") \
		op(EFA_MMAP_ERR, "mmap_err")

		#define EFA_STATS_ENUM(ename, name) ename,
		#define EFA_STATS_STR(ename, name) [ename] = name,
		@@ -1569,6 +1570,7 @@ static int __efa_mmap(struct efa_dev dev, struct efa_ucontext ucontext,
		ibdev_dbg(&dev->ibdev,
		"pgoff[%#lx] does not have valid entry\n",
		vma->vm_pgoff);
		atomic64_inc(&dev->stats.sw_stats.mmap_err);
		return -EINVAL;
		}
		entry = to_emmap(rdma_entry);
		@@ -1604,12 +1606,14 @@ static int __efa_mmap(struct efa_dev dev, struct efa_ucontext ucontext,
		err = -EINVAL;
		}

		if (err)
		if (err) {
		ibdev_dbg(
		&dev->ibdev,
		"Couldn't mmap address[%#llx] length[%#zx] mmap_flag[%d] err[%d]\n",
		entry->address, rdma_entry->npages * PAGE_SIZE,
		entry->mmap_flag, err);
		atomic64_inc(&dev->stats.sw_stats.mmap_err);
		}

		rdma_user_mmap_entry_put(rdma_entry);
		return err;
		@@ -1758,6 +1762,7 @@ int efa_get_hw_stats(struct ib_device ibdev, struct rdma_hw_stats stats,
		stats->value[EFA_REG_MR_ERR] = atomic64_read(&s->sw_stats.reg_mr_err);
		stats->value[EFA_ALLOC_UCONTEXT_ERR] = atomic64_read(&s->sw_stats.alloc_ucontext_err);
		stats->value[EFA_CREATE_AH_ERR] = atomic64_read(&s->sw_stats.create_ah_err);
		stats->value[EFA_MMAP_ERR] = atomic64_read(&s->sw_stats.mmap_err);

		return ARRAY_SIZE(efa_stats_names);
		}