From f977bb4937857994312fff4f9c2cad336a36a932 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Sun, 13 Sep 2009 18:15:54 +0200 Subject: perf_counter, sched: Add sched_stat_runtime tracepoint This allows more precise tracking of how the scheduler accounts (and acts upon) a task having spent N nanoseconds of CPU time. Cc: Peter Zijlstra Cc: Mike Galbraith Cc: Paul Mackerras Cc: Arnaldo Carvalho de Melo Cc: Frederic Weisbecker LKML-Reference: Signed-off-by: Ingo Molnar --- include/trace/events/sched.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) (limited to 'include/trace') diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h index b48f1ad7c946..4069c43f4187 100644 --- a/include/trace/events/sched.h +++ b/include/trace/events/sched.h @@ -379,6 +379,39 @@ TRACE_EVENT(sched_stat_wait, (unsigned long long)__entry->delay) ); +/* + * Tracepoint for accounting runtime (time the task is executing + * on a CPU). + */ +TRACE_EVENT(sched_stat_runtime, + + TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime), + + TP_ARGS(tsk, runtime, vruntime), + + TP_STRUCT__entry( + __array( char, comm, TASK_COMM_LEN ) + __field( pid_t, pid ) + __field( u64, runtime ) + __field( u64, vruntime ) + ), + + TP_fast_assign( + memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN); + __entry->pid = tsk->pid; + __entry->runtime = runtime; + __entry->vruntime = vruntime; + ) + TP_perf_assign( + __perf_count(runtime); + ), + + TP_printk("task: %s:%d runtime: %Lu [ns], vruntime: %Lu [ns]", + __entry->comm, __entry->pid, + (unsigned long long)__entry->runtime, + (unsigned long long)__entry->vruntime) +); + /* * Tracepoint for accounting sleep time (time the task is not runnable, * including iowait, see below). -- cgit v1.2.1 From 6161352142d5fed4cd753b32e5ccde66e705b14e Mon Sep 17 00:00:00 2001 From: Arjan van de Ven Date: Thu, 17 Sep 2009 16:11:28 +0200 Subject: tracing, perf: Convert the power tracer into an event tracer This patch converts the existing power tracer into an event tracer, so that power events (C states and frequency changes) can be tracked via "perf". This also removes the perl script that was used to demo the tracer; its functionality is being replaced entirely with timechart. Signed-off-by: Arjan van de Ven Acked-by: Peter Zijlstra Cc: Paul Mackerras Cc: Frederic Weisbecker LKML-Reference: <20090912130542.6d314860@infradead.org> Signed-off-by: Ingo Molnar --- include/trace/events/power.h | 81 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 include/trace/events/power.h (limited to 'include/trace') diff --git a/include/trace/events/power.h b/include/trace/events/power.h new file mode 100644 index 000000000000..ea6d579261ad --- /dev/null +++ b/include/trace/events/power.h @@ -0,0 +1,81 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM power + +#if !defined(_TRACE_POWER_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_POWER_H + +#include +#include + +#ifndef _TRACE_POWER_ENUM_ +#define _TRACE_POWER_ENUM_ +enum { + POWER_NONE = 0, + POWER_CSTATE = 1, + POWER_PSTATE = 2, +}; +#endif + + + +TRACE_EVENT(power_start, + + TP_PROTO(unsigned int type, unsigned int state), + + TP_ARGS(type, state), + + TP_STRUCT__entry( + __field( u64, type ) + __field( u64, state ) + ), + + TP_fast_assign( + __entry->type = type; + __entry->state = state; + ), + + TP_printk("type=%lu state=%lu", (unsigned long)__entry->type, (unsigned long)__entry->state) +); + +TRACE_EVENT(power_end, + + TP_PROTO(int dummy), + + TP_ARGS(dummy), + + TP_STRUCT__entry( + __field( u64, dummy ) + ), + + TP_fast_assign( + __entry->dummy = 0xffff; + ), + + TP_printk("dummy=%lu", (unsigned long)__entry->dummy) + +); + + +TRACE_EVENT(power_frequency, + + TP_PROTO(unsigned int type, unsigned int state), + + TP_ARGS(type, state), + + TP_STRUCT__entry( + __field( u64, type ) + __field( u64, state ) + ), + + TP_fast_assign( + __entry->type = type; + __entry->state = state; + ), + + TP_printk("type=%lu state=%lu", (unsigned long)__entry->type, (unsigned long) __entry->state) +); + +#endif /* _TRACE_POWER_H */ + +/* This part must be outside protection */ +#include -- cgit v1.2.1