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scripts: Lower kernel gzip compression to fastest

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First of all, this is a downstream kernel - always keep that in mind!
Now, this kernel is targeting new *very powerful* Qualcomm platforms
like SM8250 and the Sony Edo platform - which has a very fast UFS card.

Keep in mind that the bootloader sets the CPU at a frequency that is
slightly faster than the "in the middle" ones, which is anyway not
veeeery fast - but that's good, really. I agree.

So.. check this out:   for Image.gz-dtb.....
COMP_LEVEL    SIZE
9             20116171
5	      20220479
2	      20940223
1	      21231290

Remember again that we're loading from a UFS card and that
we are loading ~1.1MB more out of a 20MB file.
If you're smart enough you surely know already about RAM and CPU
overhead of very high compression levels.

If you still disagree with what I just did, read this commit description
another 20 times, or more, until you understand it. :)))

Change-Id: Ic28bff2011b40631fc81b582a25029ac8d12d48e
Signed-off-by: Richard Raya <rdxzv.dev@gmail.com>
This commit is contained in:
Angelo G. Del Regno 2021-12-17 17:52:03 +07:00 committed by Richard Raya
parent 5a0532fc09
commit 69fb1f355d
1 changed files with 1 additions and 1 deletions
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2
scripts/Makefile.lib
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@ -263,7 +263,7 @@ cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
# ---------------------------------------------------------------------------
quiet_cmd_gzip = GZIP $@
cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \
cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -1 > $@) || \
(rm -f $@ ; false)
# DTC