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RDS: add stat for socket recv memory usage
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Tracks the receive side memory added to scokets and removed from sockets.

Signed-off-by: Venkat Venkatsubra <venkat.x.venkatsubra@oracle.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
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Venkat Venkatsubra authored and Santosh Shilimkar committed Jan 2, 2017
1 parent cf65726 commit 192a798
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Showing 2 changed files with 7 additions and 0 deletions.
3 changes: 3 additions & 0 deletions net/rds/rds.h
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Original file line number Diff line number Diff line change
Expand Up @@ -631,6 +631,9 @@ struct rds_statistics {
uint64_t s_cong_update_received;
uint64_t s_cong_send_error;
uint64_t s_cong_send_blocked;
uint64_t s_recv_bytes_added_to_socket;
uint64_t s_recv_bytes_removed_from_socket;

};

/* af_rds.c */
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4 changes: 4 additions & 0 deletions net/rds/recv.c
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Expand Up @@ -94,6 +94,10 @@ static void rds_recv_rcvbuf_delta(struct rds_sock *rs, struct sock *sk,
return;

rs->rs_rcv_bytes += delta;
if (delta > 0)
rds_stats_add(s_recv_bytes_added_to_socket, delta);
else
rds_stats_add(s_recv_bytes_removed_from_socket, -delta);
now_congested = rs->rs_rcv_bytes > rds_sk_rcvbuf(rs);

rdsdebug("rs %p (%pI4:%u) recv bytes %d buf %d "
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