linux-kernel - [PATCH] kbuild: tar-pkg: enable communication with jobserver

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Date:   Mon, 27 May 2019 16:54:23 -0700
From:   Trevor Bourget <tgb.kernel@...il.com>
To:     yamada.masahiro@...ionext.com
Cc:     linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] kbuild: tar-pkg: enable communication with jobserver

The buildtar script might want to invoke a make, so tell the parent
make to pass the jobserver token pipe to the subcommand by prefixing
the command with a +.

This addresses the issue seen here:

	/bin/sh ../scripts/package/buildtar tar-pkg
	make[3]: warning: jobserver unavailable: using -j1.  Add '+' to parent make rule.

See https://www.gnu.org/software/make/manual/html_node/Job-Slots.html
for more information.

Signed-off-by: Trevor Bourget <tgb.kernel@...il.com>
---
 scripts/package/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/package/Makefile b/scripts/package/Makefile
index 27b42d5b6c4f..ca7f46b562a4 100644
--- a/scripts/package/Makefile
+++ b/scripts/package/Makefile
@@ -104,7 +104,7 @@ clean-dirs += $(objtree)/snap/
 # ---------------------------------------------------------------------------
 tar%pkg: FORCE
 	$(MAKE) -f $(srctree)/Makefile
-	$(CONFIG_SHELL) $(srctree)/scripts/package/buildtar $@
+	+$(CONFIG_SHELL) $(srctree)/scripts/package/buildtar $@
 
 clean-dirs += $(objtree)/tar-install/
 
-- 
2.22.0.rc1.257.g3120a18244-goog