From: kpark3469@gmail.com
To: linux-pm@vger.kernel.org
Cc: keun-o.park@windriver.com, len.brown@intel.com, rjw@sisk.pl,
rostedt@goodmis.org
Subject: [PATCH 2/4] PM / tracing: Add pm_qos_request tracepoints
Date: Thu, 20 Jun 2013 13:56:58 +0900 [thread overview]
Message-ID: <1371704220-7008-2-git-send-email-kpark3469@gmail.com> (raw)
In-Reply-To: <1371704220-7008-1-git-send-email-kpark3469@gmail.com>
From: Sahara <keun-o.park@windriver.com>
Adds tracepoints to pm_qos_add_request, pm_qos_update_request,
pm_qos_remove_request, and pm_qos_update_request_timeout.
It's useful for checking pm_qos_class, value, and timeout_us.
Signed-off-by: Sahara <keun-o.park@windriver.com>
---
include/trace/events/power.h | 75 ++++++++++++++++++++++++++++++++++++++++++
kernel/power/qos.c | 5 +++
2 files changed, 80 insertions(+), 0 deletions(-)
diff --git a/include/trace/events/power.h b/include/trace/events/power.h
index 27a714c..28b6645 100644
--- a/include/trace/events/power.h
+++ b/include/trace/events/power.h
@@ -182,6 +182,81 @@ DEFINE_EVENT(power_domain, power_domain_target,
/*
* The pm qos events are used for pm qos update
*/
+DECLARE_EVENT_CLASS(pm_qos_request,
+
+ TP_PROTO(int pm_qos_class, s32 value),
+
+ TP_ARGS(pm_qos_class, value),
+
+ TP_STRUCT__entry(
+ __field( int, pm_qos_class )
+ __field( s32, value )
+ ),
+
+ TP_fast_assign(
+ __entry->pm_qos_class = pm_qos_class;
+ __entry->value = value;
+ ),
+
+ TP_printk("pm_qos_class=%s value=%d",
+ (__entry->pm_qos_class == PM_QOS_CPU_DMA_LATENCY) ?
+ "CPU_DMA_LATENCY" :
+ (__entry->pm_qos_class == PM_QOS_NETWORK_LATENCY) ?
+ "NETWORK_LATENCY" :
+ (__entry->pm_qos_class == PM_QOS_NETWORK_THROUGHPUT) ?
+ "NETWORK_THROUGHPUT" : "??",
+ __entry->value)
+);
+
+DEFINE_EVENT(pm_qos_request, pm_qos_add_request,
+
+ TP_PROTO(int pm_qos_class, s32 value),
+
+ TP_ARGS(pm_qos_class, value)
+);
+
+DEFINE_EVENT(pm_qos_request, pm_qos_update_request,
+
+ TP_PROTO(int pm_qos_class, s32 value),
+
+ TP_ARGS(pm_qos_class, value)
+);
+
+DEFINE_EVENT(pm_qos_request, pm_qos_remove_request,
+
+ TP_PROTO(int pm_qos_class, s32 value),
+
+ TP_ARGS(pm_qos_class, value)
+);
+
+TRACE_EVENT(pm_qos_update_request_timeout,
+
+ TP_PROTO(int pm_qos_class, s32 value, unsigned long timeout_us),
+
+ TP_ARGS(pm_qos_class, value, timeout_us),
+
+ TP_STRUCT__entry(
+ __field( int, pm_qos_class )
+ __field( s32, value )
+ __field( unsigned long, timeout_us )
+ ),
+
+ TP_fast_assign(
+ __entry->pm_qos_class = pm_qos_class;
+ __entry->value = value;
+ __entry->timeout_us = timeout_us;
+ ),
+
+ TP_printk("pm_qos_class=%s value=%d, timeout_us=%ld",
+ (__entry->pm_qos_class == PM_QOS_CPU_DMA_LATENCY) ?
+ "CPU_DMA_LATENCY" :
+ (__entry->pm_qos_class == PM_QOS_NETWORK_LATENCY) ?
+ "NETWORK_LATENCY" :
+ (__entry->pm_qos_class == PM_QOS_NETWORK_THROUGHPUT) ?
+ "NETWORK_THROUGHPUT" : "??",
+ __entry->value, __entry->timeout_us)
+);
+
DECLARE_EVENT_CLASS(pm_qos_update,
TP_PROTO(enum pm_qos_req_action action, int prev_value, int curr_value),
diff --git a/kernel/power/qos.c b/kernel/power/qos.c
index 4fb8d14..06fe285 100644
--- a/kernel/power/qos.c
+++ b/kernel/power/qos.c
@@ -336,6 +336,7 @@ void pm_qos_add_request(struct pm_qos_request *req,
}
req->pm_qos_class = pm_qos_class;
INIT_DELAYED_WORK(&req->work, pm_qos_work_fn);
+ trace_pm_qos_add_request(pm_qos_class, value);
pm_qos_update_target(pm_qos_array[pm_qos_class]->constraints,
&req->node, PM_QOS_ADD_REQ, value);
}
@@ -364,6 +365,7 @@ void pm_qos_update_request(struct pm_qos_request *req,
cancel_delayed_work_sync(&req->work);
+ trace_pm_qos_update_request(req->pm_qos_class, new_value);
if (new_value != req->node.prio)
pm_qos_update_target(
pm_qos_array[req->pm_qos_class]->constraints,
@@ -390,6 +392,8 @@ void pm_qos_update_request_timeout(struct pm_qos_request *req, s32 new_value,
cancel_delayed_work_sync(&req->work);
+ trace_pm_qos_update_request_timeout(req->pm_qos_class,
+ new_value, timeout_us);
if (new_value != req->node.prio)
pm_qos_update_target(
pm_qos_array[req->pm_qos_class]->constraints,
@@ -419,6 +423,7 @@ void pm_qos_remove_request(struct pm_qos_request *req)
cancel_delayed_work_sync(&req->work);
+ trace_pm_qos_remove_request(req->pm_qos_class, PM_QOS_DEFAULT_VALUE);
pm_qos_update_target(pm_qos_array[req->pm_qos_class]->constraints,
&req->node, PM_QOS_REMOVE_REQ,
PM_QOS_DEFAULT_VALUE);
--
1.7.1
next prev parent reply other threads:[~2013-06-20 4:57 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-20 4:56 [PATCH 1/4] PM / tracing: Add pm_qos_update_target/flags tracepoints kpark3469
2013-06-20 4:56 ` kpark3469 [this message]
2013-06-20 4:56 ` [PATCH 3/4] PM / tracing: Add dev_pm_qos_request tracepoints kpark3469
2013-06-20 4:57 ` [PATCH 4/4] Documentation: Add pm_qos and dev_pm_qos to events-power.txt kpark3469
2013-06-20 12:35 ` [PATCH 1/4] PM / tracing: Add pm_qos_update_target/flags tracepoints Steven Rostedt
2013-06-21 2:16 ` Keun-O Park
2013-06-20 12:36 ` Steven Rostedt
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