linux-kernel - [PATCH 0/3] Type aware module allocator

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Date:   Thu, 25 May 2023 22:15:26 -0700
From:   Song Liu <song@...nel.org>
To:     <linux-kernel@...r.kernel.org>
CC:     <bpf@...r.kernel.org>, <mcgrof@...nel.org>, <peterz@...radead.org>,
        <tglx@...utronix.de>, <x86@...nel.org>, <rppt@...nel.org>,
        <kent.overstreet@...ux.dev>, Song Liu <song@...nel.org>
Subject: [PATCH 0/3] Type aware module allocator

This set implements the second part of module type aware allocator
(module_alloc_type), which was discussed in [1]. This part contains the
interface of the new allocator, as well as changes in x86 code to use the
new allocator (modules, BPF, ftrace, kprobe).

The set does not contain a binpack allocator to enable sharing huge pages
among different allocations. But this set defines the interface used by
the binpack allocator. [2] has some discussion on different options of the
binpack allocator.

[1] https://lore.kernel.org/linux-mm/20221107223921.3451913-1-song@kernel.org/
[2] https://lore.kernel.org/all/20230308094106.227365-1-rppt@kernel.org/

Song Liu (3):
  module: Introduce module_alloc_type
  ftrace: Add swap_func to ftrace_process_locs()
  x86/module: Use module_alloc_type

 arch/x86/kernel/alternative.c  |  37 ++++--
 arch/x86/kernel/ftrace.c       |  44 ++++---
 arch/x86/kernel/kprobes/core.c |   8 +-
 arch/x86/kernel/module.c       | 114 +++++++++++------
 arch/x86/kernel/unwind_orc.c   |  13 +-
 arch/x86/net/bpf_jit_comp.c    |  22 +++-
 include/linux/ftrace.h         |   2 +
 include/linux/module.h         |   6 +
 include/linux/moduleloader.h   |  75 ++++++++++++
 init/main.c                    |   1 +
 kernel/bpf/bpf_struct_ops.c    |  10 +-
 kernel/bpf/core.c              |  26 ++--
 kernel/bpf/trampoline.c        |   6 +-
 kernel/kprobes.c               |   6 +-
 kernel/module/internal.h       |   3 +
 kernel/module/main.c           | 217 +++++++++++++++++++++++++++++++--
 kernel/module/strict_rwx.c     |   4 +
 kernel/trace/ftrace.c          |  13 +-
 18 files changed, 493 insertions(+), 114 deletions(-)

--
2.34.1