linux-kernel - Re: [PATCH 01/50] kallsyms/printk: Add loglvl to print_ip

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Date:   Wed, 6 Nov 2019 13:38:51 +0900
From:   Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
To:     Dmitry Safonov <dima@...sta.com>
Cc:     linux-kernel@...r.kernel.org,
        Dmitry Safonov <0x7f454c46@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Ingo Molnar <mingo@...nel.org>, Jiri Slaby <jslaby@...e.com>,
        Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
        Albert Ou <aou@...s.berkeley.edu>,
        Ben Segall <bsegall@...gle.com>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Greentime Hu <green.hu@...il.com>,
        Ingo Molnar <mingo@...hat.com>,
        James Hogan <jhogan@...nel.org>,
        Juri Lelli <juri.lelli@...hat.com>,
        Mel Gorman <mgorman@...e.de>, Michal Simek <monstr@...str.eu>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Burton <paulburton@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Vincent Chen <deanbo422@...il.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Will Deacon <will@...nel.org>, linux-mips@...r.kernel.org,
        linux-riscv@...ts.infradead.org
Subject: Re: [PATCH 01/50] kallsyms/printk: Add loglvl to print_ip_sym()

On (19/11/06 03:04), Dmitry Safonov wrote:
[..]
>  #endif /*_LINUX_KALLSYMS_H*/
> diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
> index 233459c03b5a..914ff610b880 100644
> --- a/kernel/locking/lockdep.c
> +++ b/kernel/locking/lockdep.c
> @@ -3999,7 +3999,7 @@ static void print_unlock_imbalance_bug(struct task_struct *curr,
>  		curr->comm, task_pid_nr(curr));
>  	print_lockdep_cache(lock);
>  	pr_cont(") at:\n");
> -	print_ip_sym(ip);
> +	print_ip_sym(KERN_WARNING, ip);
>  	pr_warn("but there are no more locks to release!\n");
>  	pr_warn("\nother info that might help us debug this:\n");
>  	lockdep_print_held_locks(curr);
> @@ -4604,7 +4604,7 @@ static void print_lock_contention_bug(struct task_struct *curr,
>  		curr->comm, task_pid_nr(curr));
>  	print_lockdep_cache(lock);
>  	pr_cont(") at:\n");
> -	print_ip_sym(ip);
> +	print_ip_sym(KERN_WARNING, ip);
>  	pr_warn("but there are no locks held!\n");
>  	pr_warn("\nother info that might help us debug this:\n");
>  	lockdep_print_held_locks(curr);
> diff --git a/kernel/sched/core.c b/kernel/sched/core.c
> index dd05a378631a..774ff0d8dfe9 100644
> --- a/kernel/sched/core.c
> +++ b/kernel/sched/core.c
> @@ -3858,7 +3858,7 @@ static noinline void __schedule_bug(struct task_struct *prev)
>  	if (IS_ENABLED(CONFIG_DEBUG_PREEMPT)
>  	    && in_atomic_preempt_off()) {
>  		pr_err("Preemption disabled at:");
> -		print_ip_sym(preempt_disable_ip);
> +		print_ip_sym(KERN_ERR, preempt_disable_ip);
>  		pr_cont("\n");

Is this working with pr_cont()?

	-ss