Hi，Ingo This patchset reverts the hacks from patchset v1. Also it includes some other fixes upon v1 as suggested. Will you please have a look at this? The previous links are: https://lore.kernel.org/lkml/20200724135531.GB648324@xxxxxxxxx/ Thanks, huaixin > On Aug 7, 2020, at 12:17 PM, Huaixin Chang <changhuaixin@xxxxxxxxxxxxxxxxx> wrote: > > Move building of fast lookup table from boot to sorttable tool. This saves us > 6380us boot time on Intel(R) Xeon(R) CPU E5-2682 v4 @ 2.50GHz with cores. It > adds a little more than 7ms to boot time when testing on the same CPU. > > Changelog v2: > 1. Write .orc_lookup section header via objtool > 2. Move two ORC lookup table macro from orc_lookup.h into orc_types.h > 3. Spell 'ORC' in capitalized fashion > > Huaixin Chang (3): > objtool: Write .orc_lookup section header > scripts/sorttable: Build ORC fast lookup table via sorttable tool > x86/unwind/orc: Simplify unwind_init() for x86 boot > > arch/x86/include/asm/orc_lookup.h | 16 ------ > arch/x86/include/asm/orc_types.h | 16 ++++++ > arch/x86/kernel/unwind_orc.c | 41 +-------------- > arch/x86/kernel/vmlinux.lds.S | 2 +- > scripts/sorttable.h | 96 +++++++++++++++++++++++++++++++--- > tools/arch/x86/include/asm/orc_types.h | 16 ++++++ > tools/objtool/orc_gen.c | 4 ++ > 7 files changed, 128 insertions(+), 63 deletions(-) > > -- > 2.14.4.44.g2045bb6
