linux/net/smc/smc_tracepoint.c

// SPDX-License-Identifier: GPL-2.0-only

#define CREATE_TRACE_POINTS
#include "smc_tracepoint.h"

EXPORT_TRACEPOINT_SYMBOL(smc_switch_to_fallback);
EXPORT_TRACEPOINT_SYMBOL(smc_tx_sendmsg);
EXPORT_TRACEPOINT_SYMBOL(smc_rx_recvmsg);
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);`