path: root/kernel/extable.c
diff options
authorDavid Daney <david.daney@cavium.com>2012-04-19 14:59:56 -0700
committerH. Peter Anvin <hpa@linux.intel.com>2012-04-19 15:06:55 -0700
commitd219e2e86a407035303b987e4184ca0b1de53257 (patch)
treebe4d5b013da158a749064a24716dbeb628ff1f9c /kernel/extable.c
parenta79f248b9b309ebb5f34ca6a8fd1eb9e18db5720 (diff)
extable: Skip sorting if sorted at build time.
If the build program sortextable has already sorted the exception table, don't sort it again. Signed-off-by: David Daney <david.daney@cavium.com> Link: http://lkml.kernel.org/r/1334872799-14589-3-git-send-email-ddaney.cavm@gmail.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'kernel/extable.c')
1 files changed, 7 insertions, 1 deletions
diff --git a/kernel/extable.c b/kernel/extable.c
index 5339705b824..fe35a634bf7 100644
--- a/kernel/extable.c
+++ b/kernel/extable.c
@@ -35,10 +35,16 @@ DEFINE_MUTEX(text_mutex);
extern struct exception_table_entry __start___ex_table[];
extern struct exception_table_entry __stop___ex_table[];
+/* Cleared by build time tools if the table is already sorted. */
+u32 __initdata main_extable_sort_needed = 1;
/* Sort the kernel's built-in exception table */
void __init sort_main_extable(void)
- sort_extable(__start___ex_table, __stop___ex_table);
+ if (main_extable_sort_needed)
+ sort_extable(__start___ex_table, __stop___ex_table);
+ else
+ pr_notice("__ex_table already sorted, skipping sort\n");
/* Given an address, look for it in the exception tables. */