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authorMorten Rasmussen <Morten.Rasmussen@arm.com>2012-09-14 14:38:15 +0100
committerViresh Kumar <viresh.kumar@linaro.org>2013-03-12 14:54:39 +0530
commit34504af6e20c12ce4db26a26417a360e7e149888 (patch)
treebf196abfceeb0e9b3862d5fcede5c2970f55bfca /include/trace/events/sched.h
parent053663e6bc778b946ee7f70505ccf86f371c0180 (diff)
downloadvexpress-lsk-34504af6e20c12ce4db26a26417a360e7e149888.tar.gz
sched: Add ftrace events for entity load-tracking
Adds ftrace events for key variables related to the entity load-tracking to help debugging scheduler behaviour. Allows tracing of load contribution and runqueue residency ratio for both entities and runqueues as well as entity CPU usage ratio. Signed-off-by: Morten Rasmussen <Morten.Rasmussen@arm.com>
Diffstat (limited to 'include/trace/events/sched.h')
-rw-r--r--include/trace/events/sched.h125
1 files changed, 125 insertions, 0 deletions
diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h
index 5a8671e8a67..847eb76fc80 100644
--- a/include/trace/events/sched.h
+++ b/include/trace/events/sched.h
@@ -430,6 +430,131 @@ TRACE_EVENT(sched_pi_setprio,
__entry->oldprio, __entry->newprio)
);
+/*
+ * Tracepoint for showing tracked load contribution.
+ */
+TRACE_EVENT(sched_task_load_contrib,
+
+ TP_PROTO(struct task_struct *tsk, unsigned long load_contrib),
+
+ TP_ARGS(tsk, load_contrib),
+
+ TP_STRUCT__entry(
+ __array(char, comm, TASK_COMM_LEN)
+ __field(pid_t, pid)
+ __field(unsigned long, load_contrib)
+ ),
+
+ TP_fast_assign(
+ memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
+ __entry->pid = tsk->pid;
+ __entry->load_contrib = load_contrib;
+ ),
+
+ TP_printk("comm=%s pid=%d load_contrib=%lu",
+ __entry->comm, __entry->pid,
+ __entry->load_contrib)
+);
+
+/*
+ * Tracepoint for showing tracked task runnable ratio [0..1023].
+ */
+TRACE_EVENT(sched_task_runnable_ratio,
+
+ TP_PROTO(struct task_struct *tsk, unsigned long ratio),
+
+ TP_ARGS(tsk, ratio),
+
+ TP_STRUCT__entry(
+ __array(char, comm, TASK_COMM_LEN)
+ __field(pid_t, pid)
+ __field(unsigned long, ratio)
+ ),
+
+ TP_fast_assign(
+ memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
+ __entry->pid = tsk->pid;
+ __entry->ratio = ratio;
+ ),
+
+ TP_printk("comm=%s pid=%d ratio=%lu",
+ __entry->comm, __entry->pid,
+ __entry->ratio)
+);
+
+/*
+ * Tracepoint for showing tracked rq runnable ratio [0..1023].
+ */
+TRACE_EVENT(sched_rq_runnable_ratio,
+
+ TP_PROTO(int cpu, unsigned long ratio),
+
+ TP_ARGS(cpu, ratio),
+
+ TP_STRUCT__entry(
+ __field(int, cpu)
+ __field(unsigned long, ratio)
+ ),
+
+ TP_fast_assign(
+ __entry->cpu = cpu;
+ __entry->ratio = ratio;
+ ),
+
+ TP_printk("cpu=%d ratio=%lu",
+ __entry->cpu,
+ __entry->ratio)
+);
+
+/*
+ * Tracepoint for showing tracked rq runnable load.
+ */
+TRACE_EVENT(sched_rq_runnable_load,
+
+ TP_PROTO(int cpu, u64 load),
+
+ TP_ARGS(cpu, load),
+
+ TP_STRUCT__entry(
+ __field(int, cpu)
+ __field(u64, load)
+ ),
+
+ TP_fast_assign(
+ __entry->cpu = cpu;
+ __entry->load = load;
+ ),
+
+ TP_printk("cpu=%d load=%llu",
+ __entry->cpu,
+ __entry->load)
+);
+
+/*
+ * Tracepoint for showing tracked task cpu usage ratio [0..1023].
+ */
+TRACE_EVENT(sched_task_usage_ratio,
+
+ TP_PROTO(struct task_struct *tsk, unsigned long ratio),
+
+ TP_ARGS(tsk, ratio),
+
+ TP_STRUCT__entry(
+ __array(char, comm, TASK_COMM_LEN)
+ __field(pid_t, pid)
+ __field(unsigned long, ratio)
+ ),
+
+ TP_fast_assign(
+ memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
+ __entry->pid = tsk->pid;
+ __entry->ratio = ratio;
+ ),
+
+ TP_printk("comm=%s pid=%d ratio=%lu",
+ __entry->comm, __entry->pid,
+ __entry->ratio)
+);
#endif /* _TRACE_SCHED_H */
/* This part must be outside protection */