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由 Shile Zhang 提交于
commit 57fa1899428538e314a7e0d52a5b617af082389a upstream. 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: NAndy Lutomirski <luto@amacapital.net> Suggested-by: NPeter Zijlstra <peterz@infradead.org> Reported-by: Nkbuild test robot <lkp@intel.com> Signed-off-by: NShile Zhang <shile.zhang@linux.alibaba.com> Acked-by: NPeter 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.comSigned-off-by: NIngo Molnar <mingo@kernel.org> Acked-by: NCaspar Zhang <caspar@linux.alibaba.com>
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