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Message-Id: <20240722171939.3349410-19-john.ogness@linutronix.de> Date: Mon, 22 Jul 2024 19:25:38 +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 v3 18/19] 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> --- 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 2a61f2c68ddc..e34e5c5a7843 100644 --- a/kernel/printk/nbcon.c +++ b/kernel/printk/nbcon.c @@ -1260,6 +1260,12 @@ 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 6f70d3a7153f..36087a6d579f 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c @@ -3504,6 +3504,12 @@ 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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