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RDMA/restrack: Add general infrastructure to track RDMA resources

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The RDMA subsystem has very strict set of objects to work with, but it
completely lacks tracking facilities and has no visibility of resource
utilization.

The following patch adds such infrastructure to keep track of RDMA
resources to help with debugging of user space applications. The primary
user of this infrastructure is RDMA nldev netlink (following patches), to
be exposed to userspace via rdmatool, but it is not limited too that.

At this stage, the main three objects (PD, CQ and QP) are added, and more
will be added later.

Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Leon Romanovsky
2018-01-28 11:17:20 +02:00
committed by Jason Gunthorpe
parent f66c8ba4c9
commit 02d8883f52
6 changed files with 346 additions and 1 deletions
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19
include/rdma/ib_verbs.h
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@@ -63,6 +63,7 @@
#include <linux/uaccess.h>
#include <linux/cgroup_rdma.h>
#include <uapi/rdma/ib_user_verbs.h>
#include <rdma/restrack.h>
#define IB_FW_VERSION_NAME_MAX ETHTOOL_FWVERS_LEN
@@ -1525,6 +1526,7 @@ struct ib_pd {
* Implementation details of the RDMA core, don't use in drivers:
*/
struct ib_mr *__internal_mr;
struct rdma_restrack_entry res;
};
struct ib_xrcd {
@@ -1534,6 +1536,10 @@ struct ib_xrcd {
struct mutex tgt_qp_mutex;
struct list_head tgt_qp_list;
/*
* Implementation details of the RDMA core, don't use in drivers:
*/
struct rdma_restrack_entry res;
};
struct ib_ah {
@@ -1565,6 +1571,10 @@ struct ib_cq {
struct irq_poll iop;
struct work_struct work;
};
/*
* Implementation details of the RDMA core, don't use in drivers:
*/
struct rdma_restrack_entry res;
};
struct ib_srq {
@@ -1741,6 +1751,11 @@ struct ib_qp {
struct ib_rwq_ind_table *rwq_ind_tbl;
struct ib_qp_security *qp_sec;
u8 port;
/*
* Implementation details of the RDMA core, don't use in drivers:
*/
struct rdma_restrack_entry res;
};
struct ib_mr {
@@ -2347,6 +2362,10 @@ struct ib_device {
#endif
u32 index;
/*
* Implementation details of the RDMA core, don't use in drivers
*/
struct rdma_restrack_root res;
/**
* The following mandatory functions are used only at device