| Message ID | 20191115164539.57930-8-shile.zhang@linux.alibaba.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Speed booting by sorting ORC unwind tables at build time | expand |
diff --git a/arch/x86/kernel/unwind_orc.c b/arch/x86/kernel/unwind_orc.c index 332ae6530fa8..280da6fa9922 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, orc_unwind and orc_unwind_ip tables has been sorted in + * vmlinux link phase by sorttable tool at build time. + * Its ready for binary search now. + */ /* Initialize the fast lookup table: */ lookup_num_blocks = orc_lookup_end - orc_lookup;
The orc_unwind and orc_unwind_ip tables are sorted in vmlinux link phase at build time, just remove the run-time sort. Signed-off-by: Shile Zhang <shile.zhang@linux.alibaba.com> --- arch/x86/kernel/unwind_orc.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)