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Message-Id: <20240830152916.10136-17-john.ogness@linutronix.de>
Date: Fri, 30 Aug 2024 17:35:15 +0206
From: John Ogness <john.ogness@...utronix.de>
To: Petr Mladek <pmladek@...e.com>
Cc: Sergey Senozhatsky <senozhatsky@...omium.org>,
Steven Rostedt <rostedt@...dmis.org>,
Thomas Gleixner <tglx@...utronix.de>,
linux-kernel@...r.kernel.org
Subject: [PATCH printk v5 16/17] printk: nbcon: Assign nice -20 for printing threads
It is important that console printing threads are scheduled
shortly after a printk call and with generous runtime budgets.
Signed-off-by: John Ogness <john.ogness@...utronix.de>
Reviewed-by: Petr Mladek <pmladek@...e.com>
---
kernel/printk/nbcon.c | 6 ++++++
kernel/printk/printk.c | 6 ++++++
2 files changed, 12 insertions(+)
diff --git a/kernel/printk/nbcon.c b/kernel/printk/nbcon.c
index 1559b5dc3075..384bda9b1019 100644
--- a/kernel/printk/nbcon.c
+++ b/kernel/printk/nbcon.c
@@ -1318,6 +1318,12 @@ bool nbcon_kthread_create(struct console *con)
con->kthread = kt;
+ /*
+ * It is important that console printing threads are scheduled
+ * shortly after a printk call and with generous runtime budgets.
+ */
+ sched_set_normal(con->kthread, -20);
+
return true;
}
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 1c6afb0ed4d2..c4a6aaddf8e6 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -3553,6 +3553,12 @@ static bool legacy_kthread_create(void)
printk_legacy_kthread = kt;
+ /*
+ * It is important that console printing threads are scheduled
+ * shortly after a printk call and with generous runtime budgets.
+ */
+ sched_set_normal(printk_legacy_kthread, -20);
+
return true;
}
--
2.39.2
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