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authorShile Zhang <shile.zhang@linux.alibaba.com>2019-12-04 03:46:32 +0300
committerIngo Molnar <mingo@kernel.org>2019-12-13 12:47:58 +0300
commit57fa1899428538e314a7e0d52a5b617af082389a (patch)
tree37d89c675d2f149bbf51961f45c68752c7929c34 /scripts/sorttable.c
parent1091670637be8bd34a39dd1ddcc0a10a7c88d4e2 (diff)
downloadlinux-57fa1899428538e314a7e0d52a5b617af082389a.tar.xz
scripts/sorttable: Implement build-time ORC unwind table sorting
The ORC unwinder has two tables: .orc_unwind_ip and .orc_unwind, which need to be sorted for binary search. Previously this sorting was done during bootup. Sort them at build time to speed up booting. Add the ORC tables sorting in a parallel build process to speed up the build. [ mingo: Rewrote the changelog and fixed some comments. ] Suggested-by: Andy Lutomirski <luto@amacapital.net> Suggested-by: Peter Zijlstra <peterz@infradead.org> Reported-by: kbuild test robot <lkp@intel.com> 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: Michal Marek <michal.lkml@markovi.net> Cc: linux-kbuild@vger.kernel.org Link: https://lkml.kernel.org/r/20191204004633.88660-7-shile.zhang@linux.alibaba.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'scripts/sorttable.c')
-rw-r--r--scripts/sorttable.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/scripts/sorttable.c b/scripts/sorttable.c
index ff98b7db20c6..ec6b5e81eba1 100644
--- a/scripts/sorttable.c
+++ b/scripts/sorttable.c
@@ -2,6 +2,10 @@
/*
* sorttable.c: Sort the kernel's table
*
+ * Added ORC unwind tables sort support and other updates:
+ * Copyright (C) 1999-2019 Alibaba Group Holding Limited. by:
+ * Shile Zhang <shile.zhang@linux.alibaba.com>
+ *
* Copyright 2011 - 2012 Cavium, Inc.
*
* Based on code taken from recortmcount.c which is:
@@ -9,7 +13,7 @@
* Copyright 2009 John F. Reiser <jreiser@BitWagon.com>. All rights reserved.
*
* Restructured to fit Linux format, as well as other updates:
- * Copyright 2010 Steven Rostedt <srostedt@redhat.com>, Red Hat Inc.
+ * Copyright 2010 Steven Rostedt <srostedt@redhat.com>, Red Hat Inc.
*/
/*