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From: Vineet Gupta <Vineet.Gupta1@synopsys.com>
To: <linux-kernel@vger.kernel.org>
Cc: Vineet Gupta <Vineet.Gupta1@synopsys.com>,
	Michal Marek <mmarek@suse.cz>,
	Stephen Warren <swarren@nvidia.com>,
	Grant Likely <grant.likely@secretlab.ca>,
	<linux-kbuild@vger.kernel.org>
Subject: [PATCH] Kbuild: Avoid DTB rebuilds if source files are untouched
Date: Wed, 3 Apr 2013 12:42:21 +0530	[thread overview]
Message-ID: <1364973141-16354-1-git-send-email-vgupta@synopsys.com> (raw)

Currently, for every ARC kernel build I see the following:

--------------->8-----------------
  DTB    arch/arc/boot/dts/angel4.dtb.S
  AS      arch/arc/boot/dts/angel4.dtb.o
  LD      arch/arc/boot/dts/built-in.o
rm arch/arc/boot/dts/angel4.dtb.S        <-- forces rebuild next iter
  CHK     kernel/config_data.h
--------------->8-----------------

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: linux-kbuild@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
 scripts/Makefile.lib |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 07125e6..17f96f4 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -265,6 +265,8 @@ cmd_dt_S_dtb=						\
 	echo '.balign STRUCT_ALIGNMENT'; 		\
 ) > $@
 
+.PRECIOUS: $(obj)/%.dtb.S
+
 $(obj)/%.dtb.S: $(obj)/%.dtb
 	$(call cmd,dt_S_dtb)
 
-- 
1.7.10.4


WARNING: multiple messages have this Message-ID (diff)
From: Vineet Gupta <Vineet.Gupta1@synopsys.com>
To: linux-kernel@vger.kernel.org
Cc: Vineet Gupta <Vineet.Gupta1@synopsys.com>,
	Michal Marek <mmarek@suse.cz>,
	Stephen Warren <swarren@nvidia.com>,
	Grant Likely <grant.likely@secretlab.ca>,
	linux-kbuild@vger.kernel.org
Subject: [PATCH] Kbuild: Avoid DTB rebuilds if source files are untouched
Date: Wed, 3 Apr 2013 12:42:21 +0530	[thread overview]
Message-ID: <1364973141-16354-1-git-send-email-vgupta@synopsys.com> (raw)

Currently, for every ARC kernel build I see the following:

--------------->8-----------------
  DTB    arch/arc/boot/dts/angel4.dtb.S
  AS      arch/arc/boot/dts/angel4.dtb.o
  LD      arch/arc/boot/dts/built-in.o
rm arch/arc/boot/dts/angel4.dtb.S        <-- forces rebuild next iter
  CHK     kernel/config_data.h
--------------->8-----------------

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: linux-kbuild@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
 scripts/Makefile.lib |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 07125e6..17f96f4 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -265,6 +265,8 @@ cmd_dt_S_dtb=						\
 	echo '.balign STRUCT_ALIGNMENT'; 		\
 ) > $@
 
+.PRECIOUS: $(obj)/%.dtb.S
+
 $(obj)/%.dtb.S: $(obj)/%.dtb
 	$(call cmd,dt_S_dtb)
 
-- 
1.7.10.4


             reply	other threads:[~2013-04-03  7:13 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-04-03  7:12 Vineet Gupta [this message]
2013-04-03  7:12 ` [PATCH] Kbuild: Avoid DTB rebuilds if source files are untouched Vineet Gupta
2013-04-03  7:14 ` Vineet Gupta
2013-04-03  7:14   ` Vineet Gupta
2013-04-03 16:18   ` Stephen Warren
2013-04-04  5:30     ` Vineet Gupta
2013-04-04  5:30       ` Vineet Gupta
2013-04-04 17:36       ` Stephen Warren
2013-04-09 13:37         ` Vineet Gupta
2013-04-09 13:37           ` Vineet Gupta
2013-04-09 14:10         ` Vineet Gupta
2013-04-09 14:10           ` Vineet Gupta
2013-04-12  7:40           ` Vineet Gupta
2013-04-12  7:40             ` Vineet Gupta
2013-04-12 21:52             ` Stephen Warren
2013-04-15 13:59               ` Vineet Gupta
2013-04-15 13:59                 ` Vineet Gupta
2013-04-15 17:12                 ` Stephen Warren
2013-04-16 15:53               ` James Hogan
2013-04-16 15:53                 ` James Hogan
2013-04-16 16:02                 ` James Hogan
2013-04-16 16:02                   ` James Hogan
2013-04-17  4:15                   ` Vineet Gupta
2013-04-17  4:15                     ` Vineet Gupta
2013-04-17  4:13                 ` Vineet Gupta
2013-04-17  4:13                   ` Vineet Gupta
2013-04-17  9:13                   ` James Hogan
2013-04-17  9:13                     ` James Hogan

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