summaryrefslogtreecommitdiffstats
path: root/arch/x86/kernel/unwind_orc.c
diff options
context:
space:
mode:
authorShile Zhang <shile.zhang@linux.alibaba.com>2019-12-04 08:46:33 +0800
committerIngo Molnar <mingo@kernel.org>2019-12-13 10:47:58 +0100
commitf14bf6a350dfd6613dbf91be5b423bc7eab690da (patch)
treeddf1419a4f3544217090b0d25c5000dc087e840a /arch/x86/kernel/unwind_orc.c
parent57fa1899428538e314a7e0d52a5b617af082389a (diff)
downloadlinux-f14bf6a350dfd6613dbf91be5b423bc7eab690da.tar.bz2
x86/unwind/orc: Remove boot-time ORC unwind tables sorting
Now that the orc_unwind and orc_unwind_ip tables are sorted at build time, remove the boot time sorting pass. No change in functionality. [ mingo: Rewrote the changelog and code comments. ] Signed-off-by: Shile Zhang <shile.zhang@linux.alibaba.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linux-kbuild@vger.kernel.org Link: https://lkml.kernel.org/r/20191204004633.88660-8-shile.zhang@linux.alibaba.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/unwind_orc.c')
-rw-r--r--arch/x86/kernel/unwind_orc.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/x86/kernel/unwind_orc.c b/arch/x86/kernel/unwind_orc.c
index 332ae6530fa8..abdf8911a1fb 100644
--- a/arch/x86/kernel/unwind_orc.c
+++ b/arch/x86/kernel/unwind_orc.c
@@ -273,9 +273,11 @@ void __init unwind_init(void)
return;
}
- /* Sort the .orc_unwind and .orc_unwind_ip tables: */
- sort(__start_orc_unwind_ip, num_entries, sizeof(int), orc_sort_cmp,
- orc_sort_swap);
+ /*
+ * Note, the orc_unwind and orc_unwind_ip tables were already
+ * sorted at build time via the 'sorttable' tool.
+ * It's ready for binary search straight away, no need to sort it.
+ */
/* Initialize the fast lookup table: */
lookup_num_blocks = orc_lookup_end - orc_lookup;