[PATCH v2 00/15] init_mm: cleanup ARCH's text/data/brk setup code
    Russell King (Oracle) 
    linux at armlinux.org.uk
       
    Mon Jun  7 19:31:21 AEST 2021
    
    
  
On Mon, Jun 07, 2021 at 07:48:54AM +0200, Christophe Leroy wrote:
> Hi Kefeng,
> 
> What you could do is to define a __weak function that architectures can
> override and call that function from mm_init() as suggested by Mike,
The problem with weak functions is that they bloat the kernel. Each
time a weak function is overriden, it becomes dead unreachable code
within the kernel image.
At some point we're probabily going to have to enable -ffunction-sections
to (hopefully) allow the dead code to be discarded.
-- 
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