Re: [PATCH] printk: inject caller information into the body of message

[Tetsuo Handa]

On 2018/06/20 22:06, Sergey Senozhatsky wrote:
> On (06/20/18 13:32), Dmitry Vyukov wrote:
>>> So, if we could get rid of pr_cont() from the most important parts
>>> (instruction dumps, etc) then I would just vote to leave pr_cont()
>>> alone and avoid any handling of it in printk context tracking. Simply
>>> because we wouldn't care about pr_cont(). This also could simplify
>>> Tetsuo's patch significantly.
>>
>> Sounds good to me.
> 
> Awesome. If you and Fengguang can combine forces and lead the
> whole thing towards "we couldn't care of pr_cont() less", it
> would be really huuuuuge. Go for it!

Can't we have seq_printf()-like one which flushes automatically upon seeing '\n'
or buffer full? Printing memory information is using a lot of pr_cont(), even in
function names (e.g. http://lkml.kernel.org/r/20180622083949.GR10465@xxxxxxxxxxxxxx ).
Since OOM killer code is serialized by oom_lock, we can use static buffer for
OOM killer messages.