linux-kernel - Re: [PATCH] softirq: Print the function name

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Message-ID: <252851c4-c7a0-49b1-9fca-f1bac04b588f@linux.dev>
Date: Tue, 6 Jan 2026 14:16:57 +0800
From: "enlin.mu" <enlin.mu@...ux.dev>
To: tglx@...utronix.de, bigeasy@...utronix.de, boqun.feng@...il.com,
 mingo@...nel.org, ryotkkr98@...il.com, linux-kernel@...r.kernel.org,
 enlin.mu@...soc.com
Subject: Re: [PATCH] softirq: Print the function name



On 2026/1/5 17:41, Enlin Mu wrote:
> Adjust the printing format from the function address to
> the function name.
> 
> Signed-off-by: Enlin Mu <enlin.mu@...soc.com>
> Signed-off-by: Enlin Mu <enlin.mu@...ux.dev>
> ---
>   kernel/softirq.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/kernel/softirq.c b/kernel/softirq.c
> index 77198911b8dd..68ef18616fb9 100644
> --- a/kernel/softirq.c
> +++ b/kernel/softirq.c
> @@ -622,7 +622,7 @@ static void handle_softirqs(bool ksirqd)
>   		h->action();
>   		trace_softirq_exit(vec_nr);
>   		if (unlikely(prev_count != preempt_count())) {
> -			pr_err("huh, entered softirq %u %s %p with preempt_count %08x, exited with %08x?\n",
> +			pr_err("huh, entered softirq %u %s %pS with preempt_count %08x, exited with %08x?\n",
>   			       vec_nr, softirq_to_name[vec_nr], h->action,
>   			       prev_count, preempt_count());

Hi All

My test results are as follows:

before this patch:

[   49.919574] softirq: huh, entered softirq 1 TIMER 00000000bb45ef3a 
with preempt_count 00000101, exited with 00000101?


after this patch:

[   49.919570] softirq: huh, entered softirq 1 TIMER 
run_timer_softirq+0x0/0x108 with preempt_count 00000101, exited with 
00000102?

>   			preempt_count_set(prev_count);