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    Subject[net-next][PATCH 10/13] RDS: IB: add mr reused stats
    Date
    Add MR reuse statistics to RDS IB transport.

    Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>
    Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
    ---
    net/rds/ib.h | 2 ++
    net/rds/ib_rdma.c | 7 ++++++-
    net/rds/ib_stats.c | 2 ++
    3 files changed, 10 insertions(+), 1 deletion(-)

    diff --git a/net/rds/ib.h b/net/rds/ib.h
    index c88cb22..62fe7d5 100644
    --- a/net/rds/ib.h
    +++ b/net/rds/ib.h
    @@ -259,6 +259,8 @@ struct rds_ib_statistics {
    uint64_t s_ib_rdma_mr_1m_pool_flush;
    uint64_t s_ib_rdma_mr_1m_pool_wait;
    uint64_t s_ib_rdma_mr_1m_pool_depleted;
    + uint64_t s_ib_rdma_mr_8k_reused;
    + uint64_t s_ib_rdma_mr_1m_reused;
    uint64_t s_ib_atomic_cswp;
    uint64_t s_ib_atomic_fadd;
    };
    diff --git a/net/rds/ib_rdma.c b/net/rds/ib_rdma.c
    index 20ff191..00e9064 100644
    --- a/net/rds/ib_rdma.c
    +++ b/net/rds/ib_rdma.c
    @@ -188,8 +188,13 @@ struct rds_ib_mr *rds_ib_reuse_mr(struct rds_ib_mr_pool *pool)
    flag = this_cpu_ptr(&clean_list_grace);
    set_bit(CLEAN_LIST_BUSY_BIT, flag);
    ret = llist_del_first(&pool->clean_list);
    - if (ret)
    + if (ret) {
    ibmr = llist_entry(ret, struct rds_ib_mr, llnode);
    + if (pool->pool_type == RDS_IB_MR_8K_POOL)
    + rds_ib_stats_inc(s_ib_rdma_mr_8k_reused);
    + else
    + rds_ib_stats_inc(s_ib_rdma_mr_1m_reused);
    + }

    clear_bit(CLEAN_LIST_BUSY_BIT, flag);
    preempt_enable();
    diff --git a/net/rds/ib_stats.c b/net/rds/ib_stats.c
    index d77e044..7e78dca 100644
    --- a/net/rds/ib_stats.c
    +++ b/net/rds/ib_stats.c
    @@ -73,6 +73,8 @@ static const char *const rds_ib_stat_names[] = {
    "ib_rdma_mr_1m_pool_flush",
    "ib_rdma_mr_1m_pool_wait",
    "ib_rdma_mr_1m_pool_depleted",
    + "ib_rdma_mr_8k_reused",
    + "ib_rdma_mr_1m_reused",
    "ib_atomic_cswp",
    "ib_atomic_fadd",
    };
    --
    1.9.1
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