0002-Use-zstd-with-no-options-for-faster-compression.patch

From 11fc54751a599456f8ceabe0da43956d06fbbe6f Mon Sep 17 00:00:00 2001
From: Juhyung Park <qkrwngud825@gmail.com>
Date: Tue, 1 Mar 2022 20:51:23 +0900
Subject: [PATCH 02/10] Use zstd with no options for faster compression

This is taking a whole 30 seconds.

Signed-off-by: Juhyung Park <qkrwngud825@gmail.com>
---
 arch/x86/boot/compressed/Makefile | 2 +-
 scripts/Makefile.lib              | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
index 71fc531b95b4e..260d38e772b02 100644
--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -147,7 +147,7 @@ $(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
 $(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE
 	$(call if_changed,lz4_with_size)
 $(obj)/vmlinux.bin.zst: $(vmlinux.bin.all-y) FORCE
-	$(call if_changed,zstd22_with_size)
+	$(call if_changed,zstd_with_size)
 
 suffix-$(CONFIG_KERNEL_GZIP)	:= gz
 suffix-$(CONFIG_KERNEL_BZIP2)	:= bz2
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 68d0134bdbf9d..399af8fd4e1ec 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -545,8 +545,8 @@ quiet_cmd_zstd = ZSTD    $@
 quiet_cmd_zstd22 = ZSTD22  $@
       cmd_zstd22 = cat $(real-prereqs) | $(ZSTD) -22 --ultra > $@
 
-quiet_cmd_zstd22_with_size = ZSTD22  $@
-      cmd_zstd22_with_size = { cat $(real-prereqs) | $(ZSTD) -22 --ultra; $(size_append); } > $@
+quiet_cmd_zstd_with_size = ZSTD  $@
+      cmd_zstd_with_size = { cat $(real-prereqs) | $(ZSTD) -T0; $(size_append); } > $@
 
 # ASM offsets
 # ---------------------------------------------------------------------------
-- 
2.43.0