linux-kernel - [RFC PATCH 5/7] sched: access to runqueues by function

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Date: Thu, 21 Dec 2023 21:35:16 +0800
From: Ruipeng Qi <ruipengqi7@...il.com>
To: mingo@...hat.com,
	peterz@...radead.org,
	juri.lelli@...hat.com,
	vincent.guittot@...aro.org,
	dietmar.eggemann@....com
Cc: rostedt@...dmis.org,
	bsegall@...gle.com,
	mgorman@...e.de,
	bristot@...hat.com,
	vschneid@...hat.com,
	linux-kernel@...r.kernel.org,
	qiruipeng <qiruipeng@...iang.com>
Subject: [RFC PATCH 5/7] sched: access to runqueues by function

From: qiruipeng <qiruipeng@...iang.com>

Osdump is interested with runqueues, so try to access to it through
one new added function get_rq.

Signed-off-by: qiruipeng <qiruipeng@...iang.com>
---
 kernel/sched/core.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index a708d225c28e..217966111ea7 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -117,6 +117,14 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(sched_compute_energy_tp);
 
 DEFINE_PER_CPU_SHARED_ALIGNED(struct rq, runqueues);
 
+#ifdef CONFIG_OS_MINIDUMP
+int get_rq(int cpu, void **rq)
+{
+	*rq = (cpu_rq(cpu));
+	return sizeof(struct rq);
+}
+#endif
+
 #ifdef CONFIG_SCHED_DEBUG
 /*
  * Debugging: various feature bits
-- 
2.17.1