Re: [RFC PATCH 1/5] mm: intorduce __GFP_UNMAPPED and unmapped_alloc()

[Luis Chamberlain]

On Tue, Mar 28, 2023 at 06:37:13PM +0100, Matthew Wilcox wrote:
> On Tue, Mar 28, 2023 at 10:18:50AM -0700, Luis Chamberlain wrote:
> > differences with eBPF programs is that modules *can* be rather large
> > in size. What is the average size of modules? Well let's take a look:
> > 
> > mcgrof@bigtwin /mirror/code/mcgrof/linux-next (git::master)$ find ./
> > -name \*.ko| wc -l
> > 9173
> 
> ummm ... wc -c, surely?

That's the number of allmodconfig modules found.

mcgrof@fulton ~/linux (git::sysctl-next)$ find ./ -name \*.ko| head -2
./arch/x86/crypto/twofish-x86_64.ko
./arch/x86/crypto/serpent-avx2.ko
mcgrof@fulton ~/linux (git::sysctl-next)$ find ./ -name \*.ko| head -2 |
wc -l
2
mcgrof@fulton ~/linux (git::sysctl-next)$ find ./ -name \*.ko| head -2 |
wc -c
70

wc -c would give a lot more. wc -l gives me the module count.

> > mcgrof@bigtwin /mirror/code/mcgrof/linux-next (git::master)$ find ./
> > -name \*.ko|  xargs stat -c "%s - %n" | sort -n -k 1 -r | tail
> > -$((9173-5)) | awk 'BEGIN {sum=0} {sum+=$1} END {print sum/NR/1024}'
> > 160.54
> 
> ... which invalidates all of these.

Not sure ? But regardless the *.text* lookup is what we care for though
which was later.

  Luis