前半部分确有其事。复杂度从 O(n) 改成了 O(log(n))。
kallsyms: Improve the performance of kallsyms_lookup_name() - Zhen Lei
From: Zhen Lei To: Josh Poimboeuf , Jiri Kosina , Miroslav Benes , Petr Mladek , Joe Lawrence , , , Masahiro Yamada , Alexei Starovoitov , Jiri Olsa , Kees Cook , Andrew Morton , “Luis Chamberlain” , , “Steven Rostedt” , Ingo Molnar Cc: Zhen Lei , David Laight Subject:[PATCH v8 2/9] kallsyms: Improve the performance of kallsyms_lookup_name() Date: Wed, 2 Nov 2022 16:49:14 +0800[thread overview] Message-ID: (raw) In-Reply-To: Currently, to search for a symbol, we need to expand the symbols in ‘kallsyms_names’ one by one, and then use the expanded string for comparison.
https://lore.kernel.org/lkml/[email protected]/
后半部分根本查不到信息来源。什么海军部门？外企德科？
kernel/git/stable/linux.git - Linux kernel stable tree
dmaengine: fsl-dpaa2-qdma: Fix error return code in two functions
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/log/?qt=author&q=leizhen&ofs=200
Zhen Lei 从 2014 年以 [email protected] 账号向 Linux 提交 patch。明显是华为老员工。才不是外企德科这种外包公司的员工。