diff --git a/net/smc/Makefile b/net/smc/Makefile index 99a0186cba5b..196fb6f01b14 100644 --- a/net/smc/Makefile +++ b/net/smc/Makefile @@ -1,5 +1,7 @@ # SPDX-License-Identifier: GPL-2.0-only +ccflags-y += -I$(src) obj-$(CONFIG_SMC) += smc.o obj-$(CONFIG_SMC_DIAG) += smc_diag.o smc-y := af_smc.o smc_pnet.o smc_ib.o smc_clc.o smc_core.o smc_wr.o smc_llc.o smc-y += smc_cdc.o smc_tx.o smc_rx.o smc_close.o smc_ism.o smc_netlink.o smc_stats.o +smc-y += smc_tracepoint.o diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index 8dc34388b2c1..0cf7ed2f5d41 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -50,6 +50,7 @@ #include "smc_rx.h" #include "smc_close.h" #include "smc_stats.h" +#include "smc_tracepoint.h" static DEFINE_MUTEX(smc_server_lgr_pending); /* serialize link group * creation on server @@ -564,6 +565,7 @@ static void smc_switch_to_fallback(struct smc_sock *smc, int reason_code) smc->use_fallback = true; smc->fallback_rsn = reason_code; smc_stat_fallback(smc); + trace_smc_switch_to_fallback(smc, reason_code); if (smc->sk.sk_socket && smc->sk.sk_socket->file) { smc->clcsock->file = smc->sk.sk_socket->file; smc->clcsock->file->private_data = smc->clcsock; diff --git a/net/smc/smc_tracepoint.c b/net/smc/smc_tracepoint.c new file mode 100644 index 000000000000..861a41644971 --- /dev/null +++ b/net/smc/smc_tracepoint.c @@ -0,0 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#define CREATE_TRACE_POINTS +#include "smc_tracepoint.h" + +EXPORT_TRACEPOINT_SYMBOL(smc_switch_to_fallback); diff --git a/net/smc/smc_tracepoint.h b/net/smc/smc_tracepoint.h new file mode 100644 index 000000000000..3bc97f5f2134 --- /dev/null +++ b/net/smc/smc_tracepoint.h @@ -0,0 +1,49 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#undef TRACE_SYSTEM +#define TRACE_SYSTEM smc + +#if !defined(_TRACE_SMC_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_SMC_H + +#include +#include +#include +#include +#include "smc.h" +#include "smc_core.h" + +TRACE_EVENT(smc_switch_to_fallback, + + TP_PROTO(const struct smc_sock *smc, int fallback_rsn), + + TP_ARGS(smc, fallback_rsn), + + TP_STRUCT__entry( + __field(const void *, sk) + __field(const void *, clcsk) + __field(int, fallback_rsn) + ), + + TP_fast_assign( + const struct sock *sk = &smc->sk; + const struct sock *clcsk = smc->clcsock->sk; + + __entry->sk = sk; + __entry->clcsk = clcsk; + __entry->fallback_rsn = fallback_rsn; + ), + + TP_printk("sk=%p clcsk=%p fallback_rsn=%d", + __entry->sk, __entry->clcsk, __entry->fallback_rsn) +); + +#endif /* _TRACE_SMC_H */ + +#undef TRACE_INCLUDE_PATH +#define TRACE_INCLUDE_PATH . + +#undef TRACE_INCLUDE_FILE +#define TRACE_INCLUDE_FILE smc_tracepoint + +#include