[PATCH] Kbuild: use normal compression settings for tar*-pkg

From: Andi Kleen
Date: Sat Sep 08 2012 - 15:48:28 EST

From: Andi Kleen <ak@xxxxxxxxxxxxxxx>

For large kernel configurations (like a distribution kernel)
targz-pkg takes a quite long time to just do the compression.
I clocked it at 15+mins for a SUSE kernel like config on a fast
system. And tarxz and bzip2 are even slower.

The main reason is that the script that is doing the taring sets
the highest compression level (-9). When I change it to just
use the defaults the gzip time for the same kernel goes down
to ~3 mins. I haven't tested xz and bzip, but I expect those
to be much faster too.

I'm not willing to wait that long for a small compression
gain. So just change the script to use the defaults.

Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
scripts/package/buildtar | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/scripts/package/buildtar b/scripts/package/buildtar
index 8a7b155..632377f 100644
--- a/scripts/package/buildtar
+++ b/scripts/package/buildtar
@@ -28,15 +28,15 @@ case "${1}" in
- compress="gzip -c9"
+ compress="gzip"
- compress="bzip2 -c9"
+ compress="bzip2"
- compress="xz -c9"
+ compress="xz"

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