EDP: introduce revised system-EDP framework

This patch introduces a revised system-EDP software
framework. Framework consist of following components:
 * sysedp - central component handling of the book keeping of consumer
   power consumptions
 * sysedp_batmon - periodically monitors the state of battery and
   updates the available budget (in mW) to sysedp framework
 * sysedp_dynamic_capping - limits the CPU, GPU, and EMC frequencies
   to ensure that system will operate in the given budget.
 * sysedp_consumer - A device in the platform that has noticeable peak
   power consumption is called sysedp consumer. Consumers register
   themselves to the sysedp framework and inform sysedp when there is
   a change in their power state

Change-Id: I343d8f09082216744da41abe5e749b15cb20417a
Signed-off-by: Timo Alho <talho@nvidia.com>
Reviewed-on: http://git-master/r/304006
GVS: Gerrit_Virtual_Submit
Reviewed-by: Sivaram Nair <sivaramn@nvidia.com>
Reviewed-by: Juha Tukkinen <jtukkinen@nvidia.com>

1 files changed, 71 insertions, 0 deletions

diff --git a/include/trace/events/sysedp.h b/include/trace/events/sysedp.h
new file mode 100644
index 000000000000..511eea50ed02
--- /dev/null
+++ b/include/trace/events/sysedp.h
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2013, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM sysedp
+
+#if !defined(_TRACE_SYSEDP_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_SYSEDP_H
+
+#include <linux/string.h>
+#include <linux/sysedp.h>
+#include <linux/tracepoint.h>
+
+TRACE_EVENT(sysedp_change_state,
+
+	    TP_PROTO(const char *name, unsigned int old, unsigned int new),
+
+	    TP_ARGS(name, old, new),
+
+	    TP_STRUCT__entry(
+		    __array(char,     name,       SYSEDP_NAME_LEN)
+		    __field(unsigned int,       old)
+		    __field(unsigned int,       new)
+		    ),
+
+	    TP_fast_assign(
+		    memcpy(__entry->name, name, SYSEDP_NAME_LEN);
+		    __entry->old = old;
+		    __entry->new = new;
+		    ),
+
+	    TP_printk("%s: %u -> %u", __entry->name,
+		      __entry->old, __entry->new)
+	);
+
+TRACE_EVENT(sysedp_set_avail_budget,
+
+	    TP_PROTO(unsigned int old, unsigned int new),
+
+	    TP_ARGS(old, new),
+
+	    TP_STRUCT__entry(
+		    __field(unsigned int,       old)
+		    __field(unsigned int,       new)
+		    ),
+
+	    TP_fast_assign(
+		    __entry->old = old;
+		    __entry->new = new;
+		    ),
+
+	    TP_printk("%umW -> %umW", __entry->old, __entry->new)
+	);
+
+#endif /* _TRACE_SYSEDP_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>