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authorSahara <keun-o.park@windriver.com>2013-06-21 11:12:29 +0900
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-06-24 13:09:03 +0200
commitae8822b842e229fa4459fca2d979b630d812311d (patch)
treeb95b7c91426f15617cc370c874858e2d25b6fd9c /kernel/power/qos.c
parent247e9ee034b0448a585afa16e292cbb9dc0aef68 (diff)
downloadlinux-ae8822b842e229fa4459fca2d979b630d812311d.tar.bz2
PM / QoS: Add pm_qos_request tracepoints
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> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'kernel/power/qos.c')
-rw-r--r--kernel/power/qos.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/power/qos.c b/kernel/power/qos.c
index 4fb8d1427938..06fe28589e9c 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);