UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity
OpenCloudOS-Kernel/net/smc/smc_tracepoint.c

10 lines
275 B
C
Raw Normal View History

net/smc: Introduce tracepoint for fallback This introduces tracepoint for smc fallback to TCP, so that we can track which connection and why it fallbacks, and map the clcsocks' pointer with /proc/net/tcp to find more details about TCP connections. Compared with kprobe or other dynamic tracing, tracepoints are stable and easy to use. Signed-off-by: Tony Lu <tonylu@linux.alibaba.com> Reviewed-by: Wen Gu <guwen@linux.alibaba.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-11-01 15:39:12 +08:00
// SPDX-License-Identifier: GPL-2.0-only
#define CREATE_TRACE_POINTS
#include "smc_tracepoint.h"
EXPORT_TRACEPOINT_SYMBOL(smc_switch_to_fallback);
net/smc: Introduce tracepoints for tx and rx msg This introduce two tracepoints for smc tx and rx msg to help us diagnosis issues of data path. These two tracepoitns don't cover the path of CORK or MSG_MORE in tx, just the top half of data path. Signed-off-by: Tony Lu <tonylu@linux.alibaba.com> Reviewed-by: Wen Gu <guwen@linux.alibaba.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-11-01 15:39:14 +08:00
EXPORT_TRACEPOINT_SYMBOL(smc_tx_sendmsg);
EXPORT_TRACEPOINT_SYMBOL(smc_rx_recvmsg);
net/smc: Introduce tracepoint for smcr link down SMC-R link down event is important to help us find links' issues, we should track this event, especially in the single nic mode, which means upper layer connection would be shut down. Then find out the direct link-down reason in time, not only increased the counter, also the location of the code who triggered this event. Signed-off-by: Tony Lu <tonylu@linux.alibaba.com> Reviewed-by: Wen Gu <guwen@linux.alibaba.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-11-01 15:39:16 +08:00
EXPORT_TRACEPOINT_SYMBOL(smcr_link_down);