IB/hif1: Remove static tracing from SDMA hot path

The hfi1_cdbg() macro can be instantiated in the hot path even when it
is not in use.  This shows up on perf profiles.

Rework the macros (for SDMA and MMU), to use the trace interface directly
to eliminate this performance hit.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

1 files changed, 95 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/hfi1/trace_mmu.h b/drivers/infiniband/hw/hfi1/trace_mmu.h
new file mode 100644
index 000000000000..3b7abbc382c2
--- /dev/null
+++ b/drivers/infiniband/hw/hfi1/trace_mmu.h
@@ -0,0 +1,95 @@
+/*
+ * Copyright(c) 2017 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.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * BSD LICENSE
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *  - Neither the name of Intel Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#if !defined(__HFI1_TRACE_MMU_H) || defined(TRACE_HEADER_MULTI_READ)
+#define __HFI1_TRACE_MMU_H
+
+#include <linux/tracepoint.h>
+#include <linux/trace_seq.h>
+
+#include "hfi.h"
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM hfi1_mmu
+
+DECLARE_EVENT_CLASS(hfi1_mmu_rb_template,
+		    TP_PROTO(unsigned long addr, unsigned long len),
+		    TP_ARGS(addr, len),
+		    TP_STRUCT__entry(__field(unsigned long, addr)
+				     __field(unsigned long, len)
+			    ),
+		    TP_fast_assign(__entry->addr = addr;
+				   __entry->len = len;
+			    ),
+		    TP_printk("MMU node addr 0x%lx, len %lu",
+			      __entry->addr,
+			      __entry->len
+			    )
+);
+
+DEFINE_EVENT(hfi1_mmu_rb_template, hfi1_mmu_rb_insert,
+	     TP_PROTO(unsigned long addr, unsigned long len),
+	     TP_ARGS(addr, len));
+
+DEFINE_EVENT(hfi1_mmu_rb_template, hfi1_mmu_rb_search,
+	     TP_PROTO(unsigned long addr, unsigned long len),
+	     TP_ARGS(addr, len));
+
+DEFINE_EVENT(hfi1_mmu_rb_template, hfi1_mmu_rb_remove,
+	     TP_PROTO(unsigned long addr, unsigned long len),
+	     TP_ARGS(addr, len));
+
+DEFINE_EVENT(hfi1_mmu_rb_template, hfi1_mmu_mem_invalidate,
+	     TP_PROTO(unsigned long addr, unsigned long len),
+	     TP_ARGS(addr, len));
+
+#endif /* __HFI1_TRACE_RC_H */
+
+#undef TRACE_INCLUDE_PATH
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_PATH .
+#define TRACE_INCLUDE_FILE trace_mmu
+#include <trace/define_trace.h>