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
