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On Tue, 2022-10-11 at 23:54 +0100, Sam James wrote: |
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> Note that this will only take effect if compressing |
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> modules with xz or zstd (COMPRESS_MODULE_XZ is set or |
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> COMPRESS_MODULE_ZSTD is set respectively) |
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> |
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> ... or if compiling the kernel with xz or zstd (COMPRESS_KERNEL_XZ |
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> or COMPRESS_KERNEL_ZSTD is set respectiely). |
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> |
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> Signed-off-by: Sam James <sam@g.o> |
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> --- |
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> eclass/kernel-build.eclass | 10 +++++++++- |
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> 1 file changed, 9 insertions(+), 1 deletion(-) |
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> |
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> diff --git a/eclass/kernel-build.eclass b/eclass/kernel-build.eclass |
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> index 98a385bf72c0..936258e9e8af 100644 |
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> --- a/eclass/kernel-build.eclass |
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> +++ b/eclass/kernel-build.eclass |
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> @@ -29,7 +29,7 @@ esac |
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> |
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> PYTHON_COMPAT=( python3_{8..11} ) |
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> |
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> -inherit python-any-r1 savedconfig toolchain-funcs kernel-install |
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> +inherit multiprocessing python-any-r1 savedconfig toolchain-funcs kernel-install |
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> |
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> BDEPEND=" |
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> ${PYTHON_DEPS} |
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> @@ -90,6 +90,14 @@ kernel-build_src_configure() { |
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> ARCH=$(tc-arch-kernel) |
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> ) |
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> |
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> + if type -P xz ; then |
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> + export XZ_OPT="-T$(makeopts_jobs)" |
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> + fi |
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> + |
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> + if type -P zstd ; then |
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> + export ZSTD_NBTHREADS="$(makeopts_jobs)" |
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> + fi |
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> + |
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> restore_config .config |
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> [[ -f .config ]] || die "Ebuild error: please copy default config into .config" |
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> |
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|
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I'm think that we need an override for these values. Just because |
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someone is using -j12 to compile source files in parallel (which has no |
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real drawback), it doesn't mean that that person wants to use 12-thread |
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parallel xz/zstd that will actually reduce compression ratio for minimal |
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gain (I mean, most of these files won't even use parallel compression |
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because they're too small). |
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|
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Not to mention that someone using -j32 distcc setup necessarily wants |
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32-threaded local compression. |
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|
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-- |
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Best regards, |
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Michał Górny |