linux-kernel - Re: [PATCH v11 0/5] lib,kprobes: kretprobe scalability improvement

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Message-Id: <20231019001303.befd514dd103d334527e1754@kernel.org>
Date:   Thu, 19 Oct 2023 00:13:03 +0900
From:   Masami Hiramatsu (Google) <mhiramat@...nel.org>
To:     "wuqiang.matt" <wuqiang.matt@...edance.com>
Cc:     linux-trace-kernel@...r.kernel.org, davem@...emloft.net,
        anil.s.keshavamurthy@...el.com, naveen.n.rao@...ux.ibm.com,
        rostedt@...dmis.org, peterz@...radead.org,
        akpm@...ux-foundation.org, sander@...nheule.net,
        ebiggers@...gle.com, dan.j.williams@...el.com, jpoimboe@...nel.org,
        linux-kernel@...r.kernel.org, lkp@...el.com, mattwu@....com
Subject: Re: [PATCH v11 0/5] lib,kprobes: kretprobe scalability improvement

Hi,

On Tue, 17 Oct 2023 21:56:49 +0800
"wuqiang.matt" <wuqiang.matt@...edance.com> wrote:

> This patch series introduces a scalable and lockless ring-array based
> object pool to improve scalability of kretprobed routines.
> 
> v11:
>   *) patchset rebased to branch probes/core of linux-trace.git
>   *) objpool: objpool_fini optimized for better code readability
>   *) test_objpool: asynchronous releasing of objpool now covered
> 
> wuqiang.matt (5):
>   lib: objpool added: ring-array based lockless MPMC
>   lib: objpool test module added
>   kprobes: kretprobe scalability improvement with objpool
>   kprobes: freelist.h removed
>   MAINTAINERS: objpool added

OK, this version looks good to me.

Acked-by: Masami Hiramatsu (Google) <mhiramat@...nel.org>

I'll pick this series on for-next branch.

Thank you,

> 
>  MAINTAINERS              |   7 +
>  include/linux/freelist.h | 129 --------
>  include/linux/kprobes.h  |  11 +-
>  include/linux/objpool.h  | 176 ++++++++++
>  include/linux/rethook.h  |  16 +-
>  kernel/kprobes.c         |  93 +++---
>  kernel/trace/fprobe.c    |  32 +-
>  kernel/trace/rethook.c   |  90 +++--
>  lib/Kconfig.debug        |  11 +
>  lib/Makefile             |   4 +-
>  lib/objpool.c            | 286 ++++++++++++++++
>  lib/test_objpool.c       | 689 +++++++++++++++++++++++++++++++++++++++
>  12 files changed, 1270 insertions(+), 274 deletions(-)
>  delete mode 100644 include/linux/freelist.h
>  create mode 100644 include/linux/objpool.h
>  create mode 100644 lib/objpool.c
>  create mode 100644 lib/test_objpool.c
> 
> -- 
> 2.40.1
> 


-- 
Masami Hiramatsu (Google) <mhiramat@...nel.org>