Le 20/04/2018 à 22:08, Mathieu Malaterre a écrit :
On Fri, Apr 20, 2018 at 12:41 PM, Nicholas Piggin <npiggin@xxxxxxxxx> wrote:
On Fri, 20 Apr 2018 12:00:49 +0200
Mathieu Malaterre <malat@xxxxxxxxxx> wrote:
On Fri, Apr 20, 2018 at 9:34 AM, Nicholas Piggin <npiggin@xxxxxxxxx> wrote:
This requires further changes to linker script to KEEP some tables
and wildcard compiler generated sections into the right place. This
includes pp32 modifications from Christophe Leroy.
When compiling powernv_defconfig with this option:
text data bss dec filename
11827621 4810490 1341080 17979191 vmlinux
11752437 4598858 1338776 17690071 vmlinux.dcde
Resulting kernel is almost 400kB smaller (and still boots).
[ppc32 numbers here]
^^^
Do you want somebody else to provide those numbers ?
If you have a booting kernel, yes some more numbers would be good.
I've used /boot/config-4.15.0-2-powerpc from my current debian
package. Rebuild master with and without option, boot ok, load/unload
module ok.
$ size nick/vmlinux.with*
text data bss dec hex filename
7386425 2364370 1425432 11176227 aa8923 nick/vmlinux.with
7461457 2475122 1428064 11364643 ad6923 nick/vmlinux.without
This is not clear why with option the size of kernel is slightly bigger:
The file contains also debug symbols, which might differ.
Only the LOAD part of the file is interesting, that's the part you get
when doing ppc-linux-objcopy vmlinux vmlinux.bin -O binary
You can see it with readelf -l vmlinux
Christophe
$ du -sk nick/vmlinux.with*
124488 nick/vmlinux.with
124004 nick/vmlinux.without
Thanks,
Nick
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