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authorsantosh.shilimkar@oracle.com <santosh.shilimkar@oracle.com>2016-03-02 02:20:51 +0300
committerDavid S. Miller <davem@davemloft.net>2016-03-02 22:13:19 +0300
commitdb42753adb638b63572583162bb08ea193947309 (patch)
treecd47d96a3bde3e6872a9c847b8af3a8de79db3e4
parent37ea401e9ccc44453da6785514bb64ad6e9c181f (diff)
downloadlinux-db42753adb638b63572583162bb08ea193947309.tar.xz
RDS: IB: add mr reused stats
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> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/rds/ib.h2
-rw-r--r--net/rds/ib_rdma.c7
-rw-r--r--net/rds/ib_stats.c2
3 files changed, 10 insertions, 1 deletions
diff --git a/net/rds/ib.h b/net/rds/ib.h
index c88cb229db16..62fe7d5330ad 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 0e848433597f..ec7ea32265c0 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 d77e04473056..7e78dca1f252 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",
};