Re: port-evbmips/52501: erlite quickly fails to allocate memory and processes wedge

[coypu%sdf.org@localhost]

The following reply was made to PR port-evbmips/52501; it has been noted by GNATS.

From: coypu%sdf.org@localhost
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: port-evbmips/52501: erlite quickly fails to allocate memory and
 processes wedge
Date: Mon, 28 Aug 2017 17:33:44 +0000

 On Thu, Aug 24, 2017 at 10:30:01PM +0000, Nick Hudson wrote:
 >  I guess this helps with being able to use all free memory as well?
 >  
 >  If so this change is preferable because it at least tries to allocate 
 >  pages (for DMA) from the best range, but falls back if there aren't any.
 >  
 >  
 >  Nick
 >  
 >  
 >  --------------9794A98B3DAA9AD1C6CAE85F
 >  Content-Type: text/x-patch;
 >   name="uvm_km.c.diff"
 >  Content-Transfer-Encoding: 7bit
 >  Content-Disposition: attachment;
 >   filename="uvm_km.c.diff"
 >  
 >  Index: sys/uvm/uvm_km.c
 >  ===================================================================
 >  RCS file: /cvsroot/src/sys/uvm/uvm_km.c,v
 >  retrieving revision 1.143
 >  diff -u -p -r1.143 uvm_km.c
 >  --- sys/uvm/uvm_km.c	1 Jun 2017 02:45:15 -0000	1.143
 >  +++ sys/uvm/uvm_km.c	24 Aug 2017 20:45:18 -0000
 >  @@ -663,7 +663,7 @@ uvm_km_alloc(struct vm_map *map, vsize_t
 >   
 >   		pg = uvm_pagealloc_strat(NULL, offset, NULL, pgaflags,
 >   #ifdef UVM_KM_VMFREELIST
 >  -		   UVM_PGA_STRAT_ONLY, UVM_KM_VMFREELIST
 >  +		   UVM_PGA_STRAT_FALLBACK, UVM_KM_VMFREELIST
 >   #else
 >   		   UVM_PGA_STRAT_NORMAL, 0
 >   #endif
 >  
 >  
 >  --------------9794A98B3DAA9AD1C6CAE85F--
 >  
 
 This works - I can use all RAM.