linux-kernel - [PATCH] kbuild: modinst: remove the multithread option from zstd compression

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Message-ID: <20240804033309.890181-1-masahiroy@kernel.org>
Date: Sun,  4 Aug 2024 12:33:07 +0900
From: Masahiro Yamada <masahiroy@...nel.org>
To: linux-kbuild@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	Masahiro Yamada <masahiroy@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>,
	Nick Terrell <terrelln@...com>,
	Nicolas Schier <nicolas@...sle.eu>
Subject: [PATCH] kbuild: modinst: remove the multithread option from zstd compression

Parallel execution is supported by GNU Make:

  $ make -j<N> modules_install

It is questionable to enable multithreading within each zstd process
by default.

If you still want to do it, you can use the environment variable:

  $ ZSTD_NBTHREADS=<N> make modules_install

Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---

 scripts/Makefile.modinst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/Makefile.modinst b/scripts/Makefile.modinst
index 0afd75472679..04f5229efa6b 100644
--- a/scripts/Makefile.modinst
+++ b/scripts/Makefile.modinst
@@ -146,7 +146,7 @@ quiet_cmd_gzip = GZIP    $@
 quiet_cmd_xz = XZ      $@
       cmd_xz = $(XZ) --check=crc32 --lzma2=dict=1MiB -f $<
 quiet_cmd_zstd = ZSTD    $@
-      cmd_zstd = $(ZSTD) -T0 --rm -f -q $<
+      cmd_zstd = $(ZSTD) --rm -f -q $<
 
 $(dst)/%.ko.gz: $(dst)/%.ko FORCE
 	$(call cmd,gzip)
-- 
2.43.0