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authorDavid Daney <david.daney@cavium.com>2012-04-19 14:59:57 -0700
committerH. Peter Anvin <hpa@linux.intel.com>2012-04-19 15:06:56 -0700
commit1dbdc6f177c627ae462752c80a5c7f3b06a7f92a (patch)
tree935aacf3b5955d36adf87197738c798d8d4341b4 /Makefile
parentd219e2e86a407035303b987e4184ca0b1de53257 (diff)
downloadlinux-1dbdc6f177c627ae462752c80a5c7f3b06a7f92a.tar.gz
kbuild/extable: Hook up sortextable into the build system.
Define a config variable BUILDTIME_EXTABLE_SORT to control build time
sorting of the kernel's exception table.

Patch Makefile to do the sorting when BUILDTIME_EXTABLE_SORT is
selected.

Signed-off-by: David Daney <david.daney@cavium.com>
Link: http://lkml.kernel.org/r/1334872799-14589-4-git-send-email-ddaney.cavm@gmail.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile10
1 files changed, 10 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index f6578f47e21e..622c918abff8 100644
--- a/Makefile
+++ b/Makefile
@@ -784,6 +784,10 @@ quiet_cmd_vmlinux_version = GEN     .version
 quiet_cmd_sysmap = SYSMAP
       cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
 
+# Sort exception table at build time
+quiet_cmd_sortextable = SORTEX
+      cmd_sortextable = $(objtree)/scripts/sortextable
+
 # Link of vmlinux
 # If CONFIG_KALLSYMS is set .version is already updated
 # Generate System.map and verify that the content is consistent
@@ -796,6 +800,12 @@ define rule_vmlinux__
 	$(call cmd,vmlinux__)
 	$(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
 
+	$(if $(CONFIG_BUILDTIME_EXTABLE_SORT),				\
+	  $(Q)$(if $($(quiet)cmd_sortextable),				\
+	    echo '  $($(quiet)cmd_sortextable)  vmlinux' &&)		\
+	  $(cmd_sortextable)  vmlinux)
+
+
 	$(Q)$(if $($(quiet)cmd_sysmap),                                      \
 	  echo '  $($(quiet)cmd_sysmap)  System.map' &&)                     \
 	$(cmd_sysmap) $@ System.map;                                         \