Commit a056a5be authored Jun 04, 2019 by Qais Yousef Committed by Ingo Molnar Jun 24, 2019

sched/debug: Export the newly added tracepoints



So that external modules can hook into them and extract the info they
need. Since these new tracepoints have no events associated with them
exporting these tracepoints make them useful for external modules to
perform testing and debugging. There's no other way otherwise to access
them.

BPF doesn't have infrastructure to access these bare tracepoints either.

Signed-off-by: Qais Yousef <qais.yousef@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Pavankumar Kondeti <pkondeti@codeaurora.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Quentin Perret <quentin.perret@arm.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Uwe Kleine-Konig <u.kleine-koenig@pengutronix.de>
Link: https://lkml.kernel.org/r/20190604111459.2862-7-qais.yousef@arm.com


Signed-off-by: Ingo Molnar <mingo@kernel.org>

parent f9f240f9

kernel/sched/core.c

+11 −0

Original line number	Diff line number	Diff line
		@@ -23,6 +23,17 @@
		#define CREATE_TRACE_POINTS
		#include <trace/events/sched.h>

		/*
		* Export tracepoints that act as a bare tracehook (ie: have no trace event
		* associated with them) to allow external modules to probe them.
		*/
		EXPORT_TRACEPOINT_SYMBOL_GPL(pelt_cfs_tp);
		EXPORT_TRACEPOINT_SYMBOL_GPL(pelt_rt_tp);
		EXPORT_TRACEPOINT_SYMBOL_GPL(pelt_dl_tp);
		EXPORT_TRACEPOINT_SYMBOL_GPL(pelt_irq_tp);
		EXPORT_TRACEPOINT_SYMBOL_GPL(pelt_se_tp);
		EXPORT_TRACEPOINT_SYMBOL_GPL(sched_overutilized_tp);

		DEFINE_PER_CPU_SHARED_ALIGNED(struct rq, runqueues);

		#if defined(CONFIG_SCHED_DEBUG) && defined(CONFIG_JUMP_LABEL)

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