mirror of https://gitee.com/openkylin/linux.git
RDMA/cm: Replace pr_debug() call sites with tracepoints
In the interest of converging on a common instrumentation infrastructure,
modernize the pr_debug() call sites added by commit 119bf81793 ("IB/cm:
Add debug prints to ib_cm"). The new tracepoints appear in a new "ib_cma"
subsystem.
The conversion is somewhat mechanical. Someone more familiar with the
semantics of the recorded information might suggest additional data
capture.
Some benefits include:
- Tracepoints enable "always on" reporting of these errors
- The error records are structured and compact
- Tracepoints provide hooks for eBPF scripts
Sample output:
nfsd-1954 [003] 62.017901: icm_dreq_skipped: local_id=1998890974 remote_id=1129750393 state=DREQ_RCVD lap_state=LAP_UNINIT
Link: https://lore.kernel.org/r/159767239665.2968.10613294222688696646.stgit@klimt.1015granger.net
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Chuck Lever
Jason Gunthorpe
parent
b3d03daa7c
commit
75874b3d50
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@ -17,7 +17,7 @@ ib_core-y := packer.o ud_header.o verbs.o cq.o rw.o sysfs.o \
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ib_core-$(CONFIG_SECURITY_INFINIBAND) += security.o
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ib_core-$(CONFIG_CGROUP_RDMA) += cgroup.o
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ib_cm-y := cm.o
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ib_cm-y := cm.o cm_trace.o
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iw_cm-y := iwcm.o iwpm_util.o iwpm_msg.o
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@ -27,6 +27,7 @@
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#include <rdma/ib_cm.h>
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#include "cm_msgs.h"
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#include "core_priv.h"
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#include "cm_trace.h"
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MODULE_AUTHOR("Sean Hefty");
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MODULE_DESCRIPTION("InfiniBand CM");
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@ -2123,8 +2124,7 @@ static int cm_req_handler(struct cm_work *work)
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listen_cm_id_priv = cm_match_req(work, cm_id_priv);
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if (!listen_cm_id_priv) {
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pr_debug("%s: local_id %d, no listen_cm_id_priv\n", __func__,
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be32_to_cpu(cm_id_priv->id.local_id));
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trace_icm_no_listener_err(&cm_id_priv->id);
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cm_id_priv->id.state = IB_CM_IDLE;
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ret = -EINVAL;
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goto destroy;
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@ -2273,8 +2273,7 @@ int ib_send_cm_rep(struct ib_cm_id *cm_id,
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spin_lock_irqsave(&cm_id_priv->lock, flags);
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if (cm_id->state != IB_CM_REQ_RCVD &&
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cm_id->state != IB_CM_MRA_REQ_SENT) {
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pr_debug("%s: local_comm_id %d, cm_id->state: %d\n", __func__,
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be32_to_cpu(cm_id_priv->id.local_id), cm_id->state);
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trace_icm_send_rep_err(cm_id_priv->id.local_id, cm_id->state);
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ret = -EINVAL;
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goto out;
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}
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@ -2347,8 +2346,7 @@ int ib_send_cm_rtu(struct ib_cm_id *cm_id,
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spin_lock_irqsave(&cm_id_priv->lock, flags);
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if (cm_id->state != IB_CM_REP_RCVD &&
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cm_id->state != IB_CM_MRA_REP_SENT) {
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pr_debug("%s: local_id %d, cm_id->state %d\n", __func__,
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be32_to_cpu(cm_id->local_id), cm_id->state);
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trace_icm_send_cm_rtu_err(cm_id);
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ret = -EINVAL;
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goto error;
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}
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@ -2464,7 +2462,7 @@ static int cm_rep_handler(struct cm_work *work)
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cpu_to_be32(IBA_GET(CM_REP_REMOTE_COMM_ID, rep_msg)), 0);
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if (!cm_id_priv) {
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cm_dup_rep_handler(work);
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pr_debug("%s: remote_comm_id %d, no cm_id_priv\n", __func__,
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trace_icm_remote_no_priv_err(
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IBA_GET(CM_REP_REMOTE_COMM_ID, rep_msg));
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return -EINVAL;
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}
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@ -2478,11 +2476,10 @@ static int cm_rep_handler(struct cm_work *work)
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break;
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default:
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ret = -EINVAL;
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pr_debug(
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"%s: cm_id_priv->id.state: %d, local_comm_id %d, remote_comm_id %d\n",
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__func__, cm_id_priv->id.state,
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trace_icm_rep_unknown_err(
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IBA_GET(CM_REP_LOCAL_COMM_ID, rep_msg),
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IBA_GET(CM_REP_REMOTE_COMM_ID, rep_msg));
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IBA_GET(CM_REP_REMOTE_COMM_ID, rep_msg),
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cm_id_priv->id.state);
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spin_unlock_irq(&cm_id_priv->lock);
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goto error;
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}
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@ -2499,7 +2496,7 @@ static int cm_rep_handler(struct cm_work *work)
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spin_unlock(&cm.lock);
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spin_unlock_irq(&cm_id_priv->lock);
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ret = -EINVAL;
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pr_debug("%s: Failed to insert remote id %d\n", __func__,
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trace_icm_insert_failed_err(
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IBA_GET(CM_REP_REMOTE_COMM_ID, rep_msg));
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goto error;
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}
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@ -2516,9 +2513,8 @@ static int cm_rep_handler(struct cm_work *work)
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IB_CM_REJ_STALE_CONN, CM_MSG_RESPONSE_REP,
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NULL, 0);
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ret = -EINVAL;
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pr_debug(
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"%s: Stale connection. local_comm_id %d, remote_comm_id %d\n",
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__func__, IBA_GET(CM_REP_LOCAL_COMM_ID, rep_msg),
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trace_icm_staleconn_err(
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IBA_GET(CM_REP_LOCAL_COMM_ID, rep_msg),
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IBA_GET(CM_REP_REMOTE_COMM_ID, rep_msg));
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if (cur_cm_id_priv) {
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@ -2645,9 +2641,7 @@ static int cm_send_dreq_locked(struct cm_id_private *cm_id_priv,
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return -EINVAL;
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if (cm_id_priv->id.state != IB_CM_ESTABLISHED) {
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pr_debug("%s: local_id %d, cm_id->state: %d\n", __func__,
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be32_to_cpu(cm_id_priv->id.local_id),
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cm_id_priv->id.state);
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trace_icm_dreq_skipped(&cm_id_priv->id);
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return -EINVAL;
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}
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@ -2721,10 +2715,7 @@ static int cm_send_drep_locked(struct cm_id_private *cm_id_priv,
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return -EINVAL;
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if (cm_id_priv->id.state != IB_CM_DREQ_RCVD) {
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pr_debug(
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"%s: local_id %d, cm_idcm_id->state(%d) != IB_CM_DREQ_RCVD\n",
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__func__, be32_to_cpu(cm_id_priv->id.local_id),
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cm_id_priv->id.state);
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trace_icm_send_drep_err(&cm_id_priv->id);
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kfree(private_data);
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return -EINVAL;
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}
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@ -2809,9 +2800,8 @@ static int cm_dreq_handler(struct cm_work *work)
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atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
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counter[CM_DREQ_COUNTER]);
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cm_issue_drep(work->port, work->mad_recv_wc);
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pr_debug(
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"%s: no cm_id_priv, local_comm_id %d, remote_comm_id %d\n",
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__func__, IBA_GET(CM_DREQ_LOCAL_COMM_ID, dreq_msg),
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trace_icm_no_priv_err(
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IBA_GET(CM_DREQ_LOCAL_COMM_ID, dreq_msg),
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IBA_GET(CM_DREQ_REMOTE_COMM_ID, dreq_msg));
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return -EINVAL;
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}
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@ -2857,9 +2847,7 @@ static int cm_dreq_handler(struct cm_work *work)
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counter[CM_DREQ_COUNTER]);
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goto unlock;
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default:
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pr_debug("%s: local_id %d, cm_id_priv->id.state: %d\n",
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__func__, be32_to_cpu(cm_id_priv->id.local_id),
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cm_id_priv->id.state);
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trace_icm_dreq_unknown_err(&cm_id_priv->id);
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goto unlock;
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}
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cm_id_priv->id.state = IB_CM_DREQ_RCVD;
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@ -2944,9 +2932,7 @@ static int cm_send_rej_locked(struct cm_id_private *cm_id_priv,
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state);
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break;
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default:
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pr_debug("%s: local_id %d, cm_id->state: %d\n", __func__,
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be32_to_cpu(cm_id_priv->id.local_id),
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cm_id_priv->id.state);
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trace_icm_send_unknown_rej_err(&cm_id_priv->id);
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return -EINVAL;
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}
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@ -3059,9 +3045,7 @@ static int cm_rej_handler(struct cm_work *work)
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}
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/* fall through */
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default:
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pr_debug("%s: local_id %d, cm_id_priv->id.state: %d\n",
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__func__, be32_to_cpu(cm_id_priv->id.local_id),
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cm_id_priv->id.state);
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trace_icm_rej_unknown_err(&cm_id_priv->id);
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spin_unlock_irq(&cm_id_priv->lock);
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goto out;
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}
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@ -3117,9 +3101,7 @@ int ib_send_cm_mra(struct ib_cm_id *cm_id,
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}
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/* fall through */
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default:
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pr_debug("%s: local_id %d, cm_id_priv->id.state: %d\n",
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__func__, be32_to_cpu(cm_id_priv->id.local_id),
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cm_id_priv->id.state);
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trace_icm_send_mra_unknown_err(&cm_id_priv->id);
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ret = -EINVAL;
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goto error1;
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}
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@ -3228,9 +3210,7 @@ static int cm_mra_handler(struct cm_work *work)
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counter[CM_MRA_COUNTER]);
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/* fall through */
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default:
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pr_debug("%s local_id %d, cm_id_priv->id.state: %d\n",
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__func__, be32_to_cpu(cm_id_priv->id.local_id),
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cm_id_priv->id.state);
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trace_icm_mra_unknown_err(&cm_id_priv->id);
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goto out;
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}
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@ -3766,8 +3746,7 @@ static void cm_process_send_error(struct ib_mad_send_buf *msg,
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if (msg != cm_id_priv->msg || state != cm_id_priv->id.state)
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goto discard;
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pr_debug_ratelimited("CM: failed sending MAD in state %d. (%s)\n",
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state, ib_wc_status_msg(wc_status));
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trace_icm_mad_send_err(state, wc_status);
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switch (state) {
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case IB_CM_REQ_SENT:
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case IB_CM_MRA_REQ_RCVD:
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@ -3890,7 +3869,7 @@ static void cm_work_handler(struct work_struct *_work)
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ret = cm_timewait_handler(work);
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break;
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default:
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pr_debug("cm_event.event: 0x%x\n", work->cm_event.event);
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trace_icm_handler_err(work->cm_event.event);
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ret = -EINVAL;
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break;
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}
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@ -3926,8 +3905,7 @@ static int cm_establish(struct ib_cm_id *cm_id)
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ret = -EISCONN;
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break;
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default:
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pr_debug("%s: local_id %d, cm_id->state: %d\n", __func__,
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be32_to_cpu(cm_id->local_id), cm_id->state);
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trace_icm_establish_err(cm_id);
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ret = -EINVAL;
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break;
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}
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@ -4124,9 +4102,7 @@ static int cm_init_qp_init_attr(struct cm_id_private *cm_id_priv,
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ret = 0;
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break;
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default:
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pr_debug("%s: local_id %d, cm_id_priv->id.state: %d\n",
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__func__, be32_to_cpu(cm_id_priv->id.local_id),
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cm_id_priv->id.state);
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trace_icm_qp_init_err(&cm_id_priv->id);
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ret = -EINVAL;
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break;
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}
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@ -4174,9 +4150,7 @@ static int cm_init_qp_rtr_attr(struct cm_id_private *cm_id_priv,
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ret = 0;
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break;
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default:
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pr_debug("%s: local_id %d, cm_id_priv->id.state: %d\n",
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__func__, be32_to_cpu(cm_id_priv->id.local_id),
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cm_id_priv->id.state);
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trace_icm_qp_rtr_err(&cm_id_priv->id);
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ret = -EINVAL;
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break;
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}
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@ -4236,9 +4210,7 @@ static int cm_init_qp_rts_attr(struct cm_id_private *cm_id_priv,
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ret = 0;
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break;
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default:
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pr_debug("%s: local_id %d, cm_id_priv->id.state: %d\n",
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__func__, be32_to_cpu(cm_id_priv->id.local_id),
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cm_id_priv->id.state);
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trace_icm_qp_rts_err(&cm_id_priv->id);
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ret = -EINVAL;
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break;
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}
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@ -0,0 +1,15 @@
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Trace points for the IB Connection Manager.
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*
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* Author: Chuck Lever <chuck.lever@oracle.com>
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*
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* Copyright (c) 2020, Oracle and/or its affiliates.
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*/
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#include <rdma/rdma_cm.h>
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#include "cma_priv.h"
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#define CREATE_TRACE_POINTS
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#include "cm_trace.h"
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@ -0,0 +1,309 @@
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Trace point definitions for the RDMA Connect Manager.
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*
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* Author: Chuck Lever <chuck.lever@oracle.com>
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*
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* Copyright (c) 2020 Oracle and/or its affiliates.
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*/
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM ib_cma
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#if !defined(_TRACE_IB_CMA_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_IB_CMA_H
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#include <linux/tracepoint.h>
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#include <rdma/ib_cm.h>
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#include <trace/events/rdma.h>
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/*
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* enum ib_cm_state, from include/rdma/ib_cm.h
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*/
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#define IB_CM_STATE_LIST \
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ib_cm_state(IDLE) \
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ib_cm_state(LISTEN) \
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ib_cm_state(REQ_SENT) \
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ib_cm_state(REQ_RCVD) \
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ib_cm_state(MRA_REQ_SENT) \
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ib_cm_state(MRA_REQ_RCVD) \
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ib_cm_state(REP_SENT) \
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ib_cm_state(REP_RCVD) \
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ib_cm_state(MRA_REP_SENT) \
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ib_cm_state(MRA_REP_RCVD) \
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ib_cm_state(ESTABLISHED) \
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ib_cm_state(DREQ_SENT) \
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ib_cm_state(DREQ_RCVD) \
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ib_cm_state(TIMEWAIT) \
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ib_cm_state(SIDR_REQ_SENT) \
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ib_cm_state_end(SIDR_REQ_RCVD)
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#undef ib_cm_state
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#undef ib_cm_state_end
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#define ib_cm_state(x) TRACE_DEFINE_ENUM(IB_CM_##x);
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#define ib_cm_state_end(x) TRACE_DEFINE_ENUM(IB_CM_##x);
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IB_CM_STATE_LIST
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#undef ib_cm_state
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#undef ib_cm_state_end
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#define ib_cm_state(x) { IB_CM_##x, #x },
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#define ib_cm_state_end(x) { IB_CM_##x, #x }
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#define show_ib_cm_state(x) \
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__print_symbolic(x, IB_CM_STATE_LIST)
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/*
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* enum ib_cm_lap_state, from include/rdma/ib_cm.h
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*/
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#define IB_CM_LAP_STATE_LIST \
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ib_cm_lap_state(LAP_UNINIT) \
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ib_cm_lap_state(LAP_IDLE) \
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ib_cm_lap_state(LAP_SENT) \
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ib_cm_lap_state(LAP_RCVD) \
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ib_cm_lap_state(MRA_LAP_SENT) \
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ib_cm_lap_state_end(MRA_LAP_RCVD)
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#undef ib_cm_lap_state
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#undef ib_cm_lap_state_end
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#define ib_cm_lap_state(x) TRACE_DEFINE_ENUM(IB_CM_##x);
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#define ib_cm_lap_state_end(x) TRACE_DEFINE_ENUM(IB_CM_##x);
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IB_CM_LAP_STATE_LIST
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#undef ib_cm_lap_state
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#undef ib_cm_lap_state_end
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#define ib_cm_lap_state(x) { IB_CM_##x, #x },
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#define ib_cm_lap_state_end(x) { IB_CM_##x, #x }
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#define show_ib_cm_lap_state(x) \
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__print_symbolic(x, IB_CM_LAP_STATE_LIST)
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DECLARE_EVENT_CLASS(icm_id_class,
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TP_PROTO(
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const struct ib_cm_id *cm_id
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),
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TP_ARGS(cm_id),
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TP_STRUCT__entry(
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__field(const void *, cm_id) /* for eBPF scripts */
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__field(unsigned int, local_id)
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__field(unsigned int, remote_id)
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__field(unsigned long, state)
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__field(unsigned long, lap_state)
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),
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TP_fast_assign(
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__entry->cm_id = cm_id;
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__entry->local_id = be32_to_cpu(cm_id->local_id);
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__entry->remote_id = be32_to_cpu(cm_id->remote_id);
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__entry->state = cm_id->state;
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__entry->lap_state = cm_id->lap_state;
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),
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|
||||
TP_printk("local_id=%u remote_id=%u state=%s lap_state=%s",
|
||||
__entry->local_id, __entry->remote_id,
|
||||
show_ib_cm_state(__entry->state),
|
||||
show_ib_cm_lap_state(__entry->lap_state)
|
||||
)
|
||||
);
|
||||
|
||||
#define DEFINE_CM_ERR_EVENT(name) \
|
||||
DEFINE_EVENT(icm_id_class, \
|
||||
icm_##name##_err, \
|
||||
TP_PROTO( \
|
||||
const struct ib_cm_id *cm_id \
|
||||
), \
|
||||
TP_ARGS(cm_id))
|
||||
|
||||
DEFINE_CM_ERR_EVENT(send_cm_rtu);
|
||||
DEFINE_CM_ERR_EVENT(establish);
|
||||
DEFINE_CM_ERR_EVENT(no_listener);
|
||||
DEFINE_CM_ERR_EVENT(send_drep);
|
||||
DEFINE_CM_ERR_EVENT(dreq_unknown);
|
||||
DEFINE_CM_ERR_EVENT(send_unknown_rej);
|
||||
DEFINE_CM_ERR_EVENT(rej_unknown);
|
||||
DEFINE_CM_ERR_EVENT(send_mra_unknown);
|
||||
DEFINE_CM_ERR_EVENT(mra_unknown);
|
||||
DEFINE_CM_ERR_EVENT(qp_init);
|
||||
DEFINE_CM_ERR_EVENT(qp_rtr);
|
||||
DEFINE_CM_ERR_EVENT(qp_rts);
|
||||
|
||||
DEFINE_EVENT(icm_id_class, \
|
||||
icm_dreq_skipped, \
|
||||
TP_PROTO( \
|
||||
const struct ib_cm_id *cm_id \
|
||||
), \
|
||||
TP_ARGS(cm_id) \
|
||||
);
|
||||
|
||||
DECLARE_EVENT_CLASS(icm_local_class,
|
||||
TP_PROTO(
|
||||
unsigned int local_id,
|
||||
unsigned int remote_id
|
||||
),
|
||||
|
||||
TP_ARGS(local_id, remote_id),
|
||||
|
||||
TP_STRUCT__entry(
|
||||
__field(unsigned int, local_id)
|
||||
__field(unsigned int, remote_id)
|
||||
),
|
||||
|
||||
TP_fast_assign(
|
||||
__entry->local_id = local_id;
|
||||
__entry->remote_id = remote_id;
|
||||
),
|
||||
|
||||
TP_printk("local_id=%u remote_id=%u",
|
||||
__entry->local_id, __entry->remote_id
|
||||
)
|
||||
);
|
||||
|
||||
#define DEFINE_CM_LOCAL_EVENT(name) \
|
||||
DEFINE_EVENT(icm_local_class, \
|
||||
icm_##name, \
|
||||
TP_PROTO( \
|
||||
unsigned int local_id, \
|
||||
unsigned int remote_id \
|
||||
), \
|
||||
TP_ARGS(local_id, remote_id))
|
||||
|
||||
DEFINE_CM_LOCAL_EVENT(staleconn_err);
|
||||
DEFINE_CM_LOCAL_EVENT(no_priv_err);
|
||||
|
||||
DECLARE_EVENT_CLASS(icm_remote_class,
|
||||
TP_PROTO(
|
||||
u32 remote_id
|
||||
),
|
||||
|
||||
TP_ARGS(remote_id),
|
||||
|
||||
TP_STRUCT__entry(
|
||||
__field(u32, remote_id)
|
||||
),
|
||||
|
||||
TP_fast_assign(
|
||||
__entry->remote_id = remote_id;
|
||||
),
|
||||
|
||||
TP_printk("remote_id=%u",
|
||||
__entry->remote_id
|
||||
)
|
||||
);
|
||||
|
||||
#define DEFINE_CM_REMOTE_EVENT(name) \
|
||||
DEFINE_EVENT(icm_remote_class, \
|
||||
icm_##name, \
|
||||
TP_PROTO( \
|
||||
u32 remote_id \
|
||||
), \
|
||||
TP_ARGS(remote_id))
|
||||
|
||||
DEFINE_CM_REMOTE_EVENT(remote_no_priv_err);
|
||||
DEFINE_CM_REMOTE_EVENT(insert_failed_err);
|
||||
|
||||
TRACE_EVENT(icm_send_rep_err,
|
||||
TP_PROTO(
|
||||
__be32 local_id,
|
||||
enum ib_cm_state state
|
||||
),
|
||||
|
||||
TP_ARGS(local_id, state),
|
||||
|
||||
TP_STRUCT__entry(
|
||||
__field(unsigned int, local_id)
|
||||
__field(unsigned long, state)
|
||||
),
|
||||
|
||||
TP_fast_assign(
|
||||
__entry->local_id = be32_to_cpu(local_id);
|
||||
__entry->state = state;
|
||||
),
|
||||
|
||||
TP_printk("local_id=%u state=%s",
|
||||
__entry->local_id, show_ib_cm_state(__entry->state)
|
||||
)
|
||||
);
|
||||
|
||||
TRACE_EVENT(icm_rep_unknown_err,
|
||||
TP_PROTO(
|
||||
unsigned int local_id,
|
||||
unsigned int remote_id,
|
||||
enum ib_cm_state state
|
||||
),
|
||||
|
||||
TP_ARGS(local_id, remote_id, state),
|
||||
|
||||
TP_STRUCT__entry(
|
||||
__field(unsigned int, local_id)
|
||||
__field(unsigned int, remote_id)
|
||||
__field(unsigned long, state)
|
||||
),
|
||||
|
||||
TP_fast_assign(
|
||||
__entry->local_id = local_id;
|
||||
__entry->remote_id = remote_id;
|
||||
__entry->state = state;
|
||||
),
|
||||
|
||||
TP_printk("local_id=%u remote_id=%u state=%s",
|
||||
__entry->local_id, __entry->remote_id,
|
||||
show_ib_cm_state(__entry->state)
|
||||
)
|
||||
);
|
||||
|
||||
TRACE_EVENT(icm_handler_err,
|
||||
TP_PROTO(
|
||||
enum ib_cm_event_type event
|
||||
),
|
||||
|
||||
TP_ARGS(event),
|
||||
|
||||
TP_STRUCT__entry(
|
||||
__field(unsigned long, event)
|
||||
),
|
||||
|
||||
TP_fast_assign(
|
||||
__entry->event = event;
|
||||
),
|
||||
|
||||
TP_printk("unhandled event=%s",
|
||||
rdma_show_ib_cm_event(__entry->event)
|
||||
)
|
||||
);
|
||||
|
||||
TRACE_EVENT(icm_mad_send_err,
|
||||
TP_PROTO(
|
||||
enum ib_cm_state state,
|
||||
enum ib_wc_status wc_status
|
||||
),
|
||||
|
||||
TP_ARGS(state, wc_status),
|
||||
|
||||
TP_STRUCT__entry(
|
||||
__field(unsigned long, state)
|
||||
__field(unsigned long, wc_status)
|
||||
),
|
||||
|
||||
TP_fast_assign(
|
||||
__entry->state = state;
|
||||
__entry->wc_status = wc_status;
|
||||
),
|
||||
|
||||
TP_printk("state=%s completion status=%s",
|
||||
show_ib_cm_state(__entry->state),
|
||||
rdma_show_wc_status(__entry->wc_status)
|
||||
)
|
||||
);
|
||||
|
||||
#endif /* _TRACE_IB_CMA_H */
|
||||
|
||||
#undef TRACE_INCLUDE_PATH
|
||||
#define TRACE_INCLUDE_PATH ../../drivers/infiniband/core
|
||||
#define TRACE_INCLUDE_FILE cm_trace
|
||||
|
||||
#include <trace/define_trace.h>
|
||||
Loading…
Reference in New Issue