From: Qais Yousef <qais.yousef@arm.com>
To: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Steven Rostedt <rostedt@goodmis.org>
Cc: linux-kernel@vger.kernel.org,
Pavankumar Kondeti <pkondeti@codeaurora.org>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Uwe Kleine-Konig <u.kleine-koenig@pengutronix.de>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
Quentin Perret <quentin.perret@arm.com>,
Qais Yousef <qais.yousef@arm.com>
Subject: [PATCH v2 7/7] sched: export the newly added tracepoints
Date: Fri, 10 May 2019 12:30:13 +0100 [thread overview]
Message-ID: <20190510113013.1193-8-qais.yousef@arm.com> (raw)
In-Reply-To: <20190510113013.1193-1-qais.yousef@arm.com>
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.
Signed-off-by: Qais Yousef <qais.yousef@arm.com>
---
kernel/sched/core.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 4778c48a7fda..0f16e445cca1 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -22,6 +22,14 @@
#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_rq);
+EXPORT_TRACEPOINT_SYMBOL_GPL(pelt_se);
+EXPORT_TRACEPOINT_SYMBOL_GPL(sched_overutilized);
+
DEFINE_PER_CPU_SHARED_ALIGNED(struct rq, runqueues);
#if defined(CONFIG_SCHED_DEBUG) && defined(CONFIG_JUMP_LABEL)
--
2.17.1
next prev parent reply other threads:[~2019-05-10 11:32 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-10 11:30 [PATCH v2 0/7] Add new tracepoints required for EAS testing Qais Yousef
2019-05-10 11:30 ` [PATCH v2 1/7] sched: autogroup: Make autogroup_path() always available Qais Yousef
2019-05-10 11:30 ` [PATCH v2 2/7] sched: fair: move helper functions into fair.h Qais Yousef
2019-05-10 11:30 ` [PATCH v2 3/7] sched: fair.h: add a new cfs_rq_tg_path() Qais Yousef
2019-05-10 11:30 ` [PATCH v2 4/7] sched: Add pelt_rq tracepoint Qais Yousef
2019-05-13 12:14 ` Peter Zijlstra
2019-05-13 12:48 ` Qais Yousef
2019-05-13 13:37 ` Dietmar Eggemann
2019-05-10 11:30 ` [PATCH v2 5/7] sched: Add pelt_se tracepoint Qais Yousef
2019-05-10 11:30 ` [PATCH v2 6/7] sched: Add sched_overutilized tracepoint Qais Yousef
2019-05-13 12:08 ` Peter Zijlstra
2019-05-13 12:42 ` Qais Yousef
2019-05-10 11:30 ` Qais Yousef [this message]
2019-05-13 12:28 ` [PATCH v2 0/7] Add new tracepoints required for EAS testing Peter Zijlstra
2019-05-13 13:42 ` Qais Yousef
2019-05-13 15:06 ` Peter Zijlstra
2019-05-13 15:18 ` Qais Yousef
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