linux-kernel - Re: [PATCH 02/14] um: Use %pS printk format for symbols from direct addresses

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Date:   Thu, 21 Sep 2017 22:13:27 +0200
From:   Richard Weinberger <richard.weinberger@...il.com>
To:     Petr Mladek <pmladek@...e.com>
Cc:     Helge Deller <deller@....de>, LKML <linux-kernel@...r.kernel.org>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Jeff Dike <jdike@...toit.com>,
        Richard Weinberger <richard@....at>,
        "user-mode-linux-devel@...ts.sourceforge.net" 
        <user-mode-linux-devel@...ts.sourceforge.net>
Subject: Re: [PATCH 02/14] um: Use %pS printk format for symbols from direct addresses

On Tue, Sep 12, 2017 at 2:10 PM, Petr Mladek <pmladek@...e.com> wrote:
> On Wed 2017-09-06 22:27:49, Helge Deller wrote:
>> Use the %pS printk format for printing symbols from direct addresses.
>> In usermode-linux there is actually no difference between %pS and %pF, but for
>> consistency throughout the kernel fix the wrong usage here too.
>>
>> Signed-off-by: Helge Deller <deller@....de>
>> Cc: Jeff Dike <jdike@...toit.com>
>> Cc: Richard Weinberger <richard@....at>
>> Cc: user-mode-linux-devel@...ts.sourceforge.net
>> ---
>>  arch/um/kernel/sysrq.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/arch/um/kernel/sysrq.c b/arch/um/kernel/sysrq.c
>> index 6b995e8..05585ee 100644
>> --- a/arch/um/kernel/sysrq.c
>> +++ b/arch/um/kernel/sysrq.c
>> @@ -20,7 +20,7 @@
>>
>>  static void _print_addr(void *data, unsigned long address, int reliable)
>>  {
>> -     pr_info(" [<%08lx>] %s%pF\n", address, reliable ? "" : "? ",
>> +     pr_info(" [<%08lx>] %s%pS\n", address, reliable ? "" : "? ",
>>               (void *)address);
>
> This seems to be used to print addresses from the stack.
> IMHO, we should use %pB here.

%pWTF? ;)

Agreed, let's use %pB.

-- 
Thanks,
//richard