LKML Archive on lore.kernel.org
 help / color / Atom feed
From: tip-bot for Qais Yousef <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: u.kleine-koenig@pengutronix.de, bigeasy@linutronix.de,
	peterz@infradead.org, pkondeti@codeaurora.org,
	quentin.perret@arm.com, torvalds@linux-foundation.org,
	tglx@linutronix.de, hpa@zytor.com, dietmar.eggemann@arm.com,
	rostedt@goodmis.org, mingo@kernel.org, qais.yousef@arm.com,
	linux-kernel@vger.kernel.org
Subject: [tip:sched/core] sched/debug: Export the newly added tracepoints
Date: Tue, 25 Jun 2019 01:28:35 -0700
Message-ID: <tip-a056a5bed7fa67706574b00cf1122c38596b2be1@git.kernel.org> (raw)
In-Reply-To: <20190604111459.2862-7-qais.yousef@arm.com>

Commit-ID:  a056a5bed7fa67706574b00cf1122c38596b2be1
Gitweb:     https://git.kernel.org/tip/a056a5bed7fa67706574b00cf1122c38596b2be1
Author:     Qais Yousef <qais.yousef@arm.com>
AuthorDate: Tue, 4 Jun 2019 12:14:59 +0100
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Mon, 24 Jun 2019 19:23:43 +0200

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>
---
 kernel/sched/core.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 83bd6bb32a34..e5e02d23e693 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -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)

  reply index

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-04 11:14 [PATCH v3 0/6] sched: Add new tracepoints required for EAS testing Qais Yousef
2019-06-04 11:14 ` [PATCH v3 1/6] sched: autogroup: Make autogroup_path() always available Qais Yousef
2019-06-25  8:24   ` [tip:sched/core] sched/autogroup: " tip-bot for Qais Yousef
2019-06-04 11:14 ` [PATCH v3 2/6] sched: add a new sched_trace_*() helper functions Qais Yousef
2019-06-25  8:25   ` [tip:sched/core] sched/debug: Add " tip-bot for Qais Yousef
2019-06-04 11:14 ` [PATCH v3 3/6] sched: Add new tracepoints to track pelt at rq level Qais Yousef
2019-06-25  8:26   ` [tip:sched/core] sched/debug: Add new tracepoints to track PELT " tip-bot for Qais Yousef
2019-06-04 11:14 ` [PATCH v3 4/6] sched: Add new tracepoint to track pelt at se level Qais Yousef
2019-06-25  8:27   ` [tip:sched/core] sched/debug: Add new tracepoint to track PELT " tip-bot for Qais Yousef
2019-06-04 11:14 ` [PATCH v3 5/6] sched: Add sched_overutilized tracepoint Qais Yousef
2019-06-17 15:50   ` Peter Zijlstra
2019-06-17 16:31     ` Qais Yousef
2019-06-25  8:27   ` [tip:sched/core] sched/debug: " tip-bot for Qais Yousef
2019-06-04 11:14 ` [PATCH v3 6/6] sched: export the newly added tracepoints Qais Yousef
2019-06-25  8:28   ` tip-bot for Qais Yousef [this message]
2019-06-05  6:17 ` [PATCH v3 0/6] sched: Add new tracepoints required for EAS testing Christoph Hellwig
2019-06-05  7:22   ` Peter Zijlstra
2019-06-05 22:33   ` Qais Yousef
2019-06-17 12:51 ` Qais Yousef
2019-06-17 15:55   ` Peter Zijlstra
2019-06-17 16:22     ` Qais Yousef

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=tip-a056a5bed7fa67706574b00cf1122c38596b2be1@git.kernel.org \
    --to=tipbot@zytor.com \
    --cc=bigeasy@linutronix.de \
    --cc=dietmar.eggemann@arm.com \
    --cc=hpa@zytor.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-tip-commits@vger.kernel.org \
    --cc=mingo@kernel.org \
    --cc=peterz@infradead.org \
    --cc=pkondeti@codeaurora.org \
    --cc=qais.yousef@arm.com \
    --cc=quentin.perret@arm.com \
    --cc=rostedt@goodmis.org \
    --cc=tglx@linutronix.de \
    --cc=torvalds@linux-foundation.org \
    --cc=u.kleine-koenig@pengutronix.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

LKML Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/lkml/0 lkml/git/0.git
	git clone --mirror https://lore.kernel.org/lkml/1 lkml/git/1.git
	git clone --mirror https://lore.kernel.org/lkml/2 lkml/git/2.git
	git clone --mirror https://lore.kernel.org/lkml/3 lkml/git/3.git
	git clone --mirror https://lore.kernel.org/lkml/4 lkml/git/4.git
	git clone --mirror https://lore.kernel.org/lkml/5 lkml/git/5.git
	git clone --mirror https://lore.kernel.org/lkml/6 lkml/git/6.git
	git clone --mirror https://lore.kernel.org/lkml/7 lkml/git/7.git
	git clone --mirror https://lore.kernel.org/lkml/8 lkml/git/8.git
	git clone --mirror https://lore.kernel.org/lkml/9 lkml/git/9.git
	git clone --mirror https://lore.kernel.org/lkml/10 lkml/git/10.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 lkml lkml/ https://lore.kernel.org/lkml \
		linux-kernel@vger.kernel.org
	public-inbox-index lkml

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-kernel


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git