IB/hfi1: Add packet histogram trace event (7638c0e9) · Commits · 戴 / test

drivers/infiniband/hw/hfi1/driver.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1706,6 +1706,7 @@ static void hfi1_ipoib_ib_rcv(struct hfi1_packet *packet)
		goto drop_no_nd;

		trace_input_ibhdr(rcd->dd, packet, !!(rhf_dc_info(packet->rhf)));
		trace_ctxt_rsm_hist(rcd->ctxt);

		/* handle congestion notifications */
		do_work = hfi1_may_ecn(packet);

+32 −0

Original line number	Diff line number	Diff line
		@@ -520,6 +520,38 @@ u16 hfi1_trace_get_tid_idx(u32 ent)
		return EXP_TID_GET(ent, IDX);
		}

		struct hfi1_ctxt_hist {
		atomic_t count;
		atomic_t data[255];
		};

		struct hfi1_ctxt_hist hist = {
		.count = ATOMIC_INIT(0)
		};

		const char hfi1_trace_print_rsm_hist(struct trace_seq p, unsigned int ctxt)
		{
		int i, len = ARRAY_SIZE(hist.data);
		const char *ret = trace_seq_buffer_ptr(p);
		unsigned long packet_count = atomic_fetch_inc(&hist.count);

		trace_seq_printf(p, "packet[%lu]", packet_count);
		for (i = 0; i < len; ++i) {
		unsigned long val;
		atomic_t *count = &hist.data[i];

		if (ctxt == i)
		val = atomic_fetch_inc(count);
		else
		val = atomic_read(count);

		if (val)
		trace_seq_printf(p, "(%d:%lu)", i, val);
		}
		trace_seq_putc(p, 0);
		return ret;
		}

		__hfi1_trace_fn(AFFINITY);
		__hfi1_trace_fn(PKT);
		__hfi1_trace_fn(PROC);

+10 −1

Original line number	Diff line number	Diff line
		/*
		* Copyright(c) 2015, 2016 Intel Corporation.
		* Copyright(c) 2015 - 2020 Intel Corporation.
		*
		* This file is provided under a dual BSD/GPLv2 license. When using or
		* redistributing this file, you may do so under either license.
		@@ -138,6 +138,15 @@ TRACE_EVENT(hfi1_ctxt_info,
		)
		);

		const char hfi1_trace_print_rsm_hist(struct trace_seq p, unsigned int ctxt);
		TRACE_EVENT(ctxt_rsm_hist,
		TP_PROTO(unsigned int ctxt),
		TP_ARGS(ctxt),
		TP_STRUCT__entry(__field(unsigned int, ctxt)),
		TP_fast_assign(__entry->ctxt = ctxt;),
		TP_printk("%s", hfi1_trace_print_rsm_hist(p, __entry->ctxt))
		);

		#endif /* __HFI1_TRACE_CTXTS_H */

		#undef TRACE_INCLUDE_PATH