linux-kernel - Re: [PATCH v1 0/9] Fix Allwinner D1 boot regression

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Message-ID: <87plqalyd4.ffs@tglx>
Date: Thu, 15 Aug 2024 15:16:55 +0200
From: Thomas Gleixner <tglx@...utronix.de>
To: Emil Renner Berthing <emil.renner.berthing@...onical.com>, Emil Renner
 Berthing <emil.renner.berthing@...onical.com>,
 linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org, Anup Patel
 <apatel@...tanamicro.com>
Cc: Paul Walmsley <paul.walmsley@...ive.com>, Samuel Holland
 <samuel.holland@...ive.com>, Palmer Dabbelt <palmer@...belt.com>, Albert
 Ou <aou@...s.berkeley.edu>, Daniel Lezcano <daniel.lezcano@...aro.org>
Subject: Re: [PATCH v1 0/9] Fix Allwinner D1 boot regression

On Thu, Aug 15 2024 at 05:14, Emil Renner Berthing wrote:
> Emil Renner Berthing wrote:
>> 6.11-rc3 + these reverts:  https://termbin.com/q6wk
>> 6.11-rc3 + Samuel's patch: https://termbin.com/7cgs
>
> I think this confirms what Charlie found here:
> https://lore.kernel.org/linux-riscv/ZoydV7vad5JWIcZb@ghost/

Yes. So the riscv timer is not working on this thing or it stops
somehow.

Can you apply the debug patch below and check whether you see the
'J: ....' output at all and if so whether it stops at some point.

Thanks,

        tglx

---
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -2459,6 +2459,9 @@ static void run_local_timers(void)
 {
 	struct timer_base *base = this_cpu_ptr(&timer_bases[BASE_LOCAL]);
 
+	if (!(jiffies & 0xFF))
+		pr_info("J: %lx\n", jiffies);
+
 	hrtimer_run_queues();
 
 	for (int i = 0; i < NR_BASES; i++, base++) {