linux-kernel - Re: Re: [PATCH] mips: add arch_trigger_all_cpu

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Message-id: <863134949.204101414024143724.JavaMail.weblogic@epmlwas06c>
Date:	Thu, 23 Oct 2014 00:29:05 +0000 (GMT)
From:	Eunbong Song <eunb.song@...sung.com>
To:	James Hogan <james.hogan@...tec.com>
Cc:	"ralf@...ux-mips.org" <ralf@...ux-mips.org>,
	"linux-mips@...ux-mips.org" <linux-mips@...ux-mips.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Re: [PATCH] mips: add arch_trigger_all_cpu_backtrace() function



>> This patch adds arch_trigger_all_cpu_backtrace() for mips architecture.

> Don't forget your Signed-off-by

I'm sorry fot this. 

>> +static void arch_dump_stack(void *info)
>> +{
>> + struct pt_regs *regs;  
>> + 
>> + regs = get_irq_regs();
>> +
>> + if(regs)
>> + show_regs(regs);
>> +
>> + dump_stack();
>> +}
>> +
>> +void arch_trigger_all_cpu_backtrace(bool include_self)
>> +{
>> + smp_call_function(arch_dump_stack, NULL, 1);

> should this call arch_dump_stack directly too if include_self?
Currently, in case of mips there is no case include_self is true, so this is not a problem. 
arch_trigger_all_cpu_backtrace can only be called from trigger_allbutself_cpu_backtrace() in kernel/watchdog.c.
But as you said, if the case will be added, we should consider that.

Thanks.

> Cheers
> James