msm: tracing: Add ftrace support for LPM resources
Add trace event support to capture sleep value for
each of the lpm resources l2, pxo, vdd mem and vdd
dig during power collapse.
Change-Id: Ie0d7528ecd5a87631ff584953bfe0bd77043add9
Signed-off-by: Priyanka Mathur <pmathur@codeaurora.org>
diff --git a/Documentation/trace/events-msm-low-power.txt b/Documentation/trace/events-msm-low-power.txt
index 3e01558..5414146 100644
--- a/Documentation/trace/events-msm-low-power.txt
+++ b/Documentation/trace/events-msm-low-power.txt
@@ -43,3 +43,15 @@
The 'success' parameter shows the state of power collapse/standalone power
collapse. It will be set if power collapse/standalone power collapse were
successful. For the rest of the low power modes it is set to one.
+
+3) lpm_resources
+=================
+lpm_resources: name:%s sleep_value:%d
+
+This event captures parameters for each of the lpm resources.
+
+The 'name' parameter represents the name of the lpm resource and it can hold
+l2, pxo, vdd mem, vdd dig depending on the resource chosen during power
+collapse.
+
+The 'sleep_value' parameter corresponds to the sleep value set for the resource.
diff --git a/arch/arm/mach-msm/lpm_resources.c b/arch/arm/mach-msm/lpm_resources.c
index 255cd46..c21ea33 100644
--- a/arch/arm/mach-msm/lpm_resources.c
+++ b/arch/arm/mach-msm/lpm_resources.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2012, Code Aurora Forum. All rights reserved.
+/* Copyright (c) 2012, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@@ -27,6 +27,7 @@
#include "lpm_resources.h"
#include "rpm-notifier.h"
#include "idle.h"
+#include "trace_msm_low_power.h"
/*Debug Definitions*/
enum {
@@ -417,6 +418,7 @@
if (rs->valid)
rs->sleep_value = limits->l2_cache;
+ trace_lpm_resources(rs->sleep_value, rs->name);
}
static void msm_lpm_flush_l2(int notify_rpm)
@@ -497,6 +499,7 @@
else
rs->sleep_value = vdd_buf;
}
+ trace_lpm_resources(rs->sleep_value, rs->name);
}
static void msm_lpm_flush_vdd_dig(int notify_rpm)
@@ -551,6 +554,7 @@
else
rs->sleep_value = vdd_buf;
}
+ trace_lpm_resources(rs->sleep_value, rs->name);
}
static void msm_lpm_flush_vdd_mem(int notify_rpm)
@@ -608,6 +612,7 @@
pr_info("%s: pxo buf %d sleep value %d\n",
__func__, pxo_buf, rs->sleep_value);
}
+ trace_lpm_resources(rs->sleep_value, rs->name);
}
static void msm_lpm_flush_pxo(int notify_rpm)
diff --git a/arch/arm/mach-msm/trace_msm_low_power.h b/arch/arm/mach-msm/trace_msm_low_power.h
index aa0a744..4e9da85 100644
--- a/arch/arm/mach-msm/trace_msm_low_power.h
+++ b/arch/arm/mach-msm/trace_msm_low_power.h
@@ -126,6 +126,27 @@
TP_ARGS(cpu, success)
);
+
+TRACE_EVENT(lpm_resources,
+
+ TP_PROTO(uint32_t sleep_value , char *name),
+
+ TP_ARGS(sleep_value, name),
+
+ TP_STRUCT__entry(
+ __field(uint32_t , sleep_value)
+ __string(name, name)
+ ),
+
+ TP_fast_assign(
+ __entry->sleep_value = sleep_value;
+ __assign_str(name, name);
+ ),
+
+ TP_printk("name:%s sleep_value:%d",
+ __get_str(name),
+ __entry->sleep_value)
+);
#endif
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .