Re: memory_failure_dev_pagemap() missing from System.map file
On 12/18/2018 6:57 PM, Dan Williams wrote:
On Tue, Dec 18, 2018 at 6:50 PM Jane Chu <jane.chu(a)oracle.com>
wrote:
> Hi, Dan,
>
> While looking at a kernel Oops in the PMEM poison handling code path,
> I noticed that memory_failure_dev_pagemap() is missing from the
> System.map file in the 4.19 build.
Are you talking about a generic upstream 4.19 build or some other kernel?
Generic upstream 4.19 build.
> Are you aware of this?
I would expect this to be the case in general for functions that are
inlined. In this case I would expect memory_failure() to show up in
System.map, but not memory_failure_dev_pagemap() since it's not
exported and nothing outside mm/memory_failure.c consumes it.
Not appear inlined, it is statically declared, refer to
https://elixir.bootlin.com/linux/v4.19.10/ident/memory_failure_dev_pagemap
hwpoison_user_mappings() is also statically declared, and it's in System.map.
thanks,
-jane