Messages in this thread | | | From | Anshuman Khandual <> | Subject | Re: [RFC] mm/page_alloc: Enumerate bad page reasons | Date | Mon, 30 Mar 2020 17:55:14 +0530 |
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On 03/30/2020 02:13 PM, Michal Hocko wrote: > On Mon 30-03-20 12:21:37, Anshuman Khandual wrote: >> Enumerate all existing bad page reasons which can be used in bad_page() for >> reporting via __dump_page(). Unfortunately __dump_page() cannot be changed. >> __dump_page() is called from dump_page() that accepts a raw string and is >> also an exported symbol that is currently being used from various generic >> memory functions and other drivers. This reduces code duplication while >> reporting bad pages. > > I dunno. It sounds like over engineering something that is an internal > stuff. Besides that I consider string reasons kinda obvious and I am > pretty sure I would have to check them for each numeric alias when want > to read the code. Yeah, yeah, nothing really hard but still...
Right these are very much self explanatory. Would moving these aliases into mm/page_alloc.c itself, make it any better for quicker access ?
> > So I am not really sure this is all worth the code churn. Besides
I understand but is not just repeating the same strings in similar functions bit suboptimal as well.
> that I stongly suspect you wanted ... > >> -static void bad_page(struct page *page, const char *reason, >> +static void bad_page(struct page *page, int reason, >> unsigned long bad_flags) > > ... enum page_bad_reason reason here, right? What is the point of declaring > an enum when you are not using it?
Sure, will replace here and other local reason variables which are 'int'.
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