diff mbox series

[4/7] parisc: Prevent hung tasks when printing inventory on serial console

Message ID 20240123155904.6220-4-deller@kernel.org (mailing list archive)
State Superseded, archived
Headers show
Series [1/7] parisc: Use irq_enter_rcu() to fix warning at kernel/context_tracking.c:367 | expand

Commit Message

Helge Deller Jan. 23, 2024, 3:59 p.m. UTC 
From: Helge Deller <deller@gmx.de>

Printing the inventory on a serial console can be quite slow and thus may
trigger the hung task detector (CONFIG_DETECT_HUNG_TASK=y) and possibly
reboot the machine. Adding a cond_resched() prevents this.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: <stable@vger.kernel.org> # v6.0+
---
 arch/parisc/kernel/drivers.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/arch/parisc/kernel/drivers.c b/arch/parisc/kernel/drivers.c
index 25f9b9e9d6df..404ea37705ce 100644
--- a/arch/parisc/kernel/drivers.c
+++ b/arch/parisc/kernel/drivers.c
@@ -1004,6 +1004,9 @@  static __init int qemu_print_iodc_data(struct device *lin_dev, void *data)
 
 	pr_info("\n");
 
+	/* Prevent hung task messages when printing on serial console */
+	cond_resched();
+
 	pr_info("#define HPA_%08lx_DESCRIPTION \"%s\"\n",
 		hpa, parisc_hardware_description(&dev->id));