[PATCH 00/11] Introduce kernel_clone(), kill _do_fork()

From: Christian Brauner <christian.brauner@ubuntu.com>
To: Christoph Hewllig <hch@infradead.org>,
	linux-kernel@vger.kernel.org,
	Linus Torvalds <torvalds@linux-foundation.org>,
	linux-arch@vger.kernel.org
Cc: Jonathan Corbet <corbet@lwn.net>,
	Yoshinori Sato <ysato@users.sourceforge.jp>,
	Tony Luck <tony.luck@intel.com>,
	Fenghua Yu <fenghua.yu@intel.com>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	Ley Foon Tan <ley.foon.tan@intel.com>,
	"David S. Miller" <davem@davemloft.net>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	x86@kernel.org, Arnd Bergmann <arnd@arndb.de>,
	Steven Rostedt <rostedt@goodmis.org>,
	Stafford Horne <shorne@gmail.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Kars de Jong <jongk@linux-m68k.org>,
	Kees Cook <keescook@chromium.org>,
	Greentime Hu <green.hu@gmail.com>,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	Mauro Carvalho Chehab <mchehab+huawei@kernel.org>,
	Alexandre Chartre <alexandre.chartre@oracle.com>,
	Masami Hiramatsu <mhiramat@kernel.org>,
	Tom Zanussi <zanussi@kernel.org>,
	Xiao Yang <yangx.jy@cn.fujitsu.com>,
	linux-doc@vger.kernel.org, uclinux-h8-devel@lists.sourceforge.jp,
	linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org,
	sparclinux@vger.kernel.org, kgdb-bugreport@lists.sourceforge.net,
	linux-kselftest@vger.kernel.org,
	Christian Brauner <christian.brauner@ubuntu.com>
Subject: [PATCH 00/11] Introduce kernel_clone(), kill _do_fork()
Date: Tue, 18 Aug 2020 19:34:00 +0200	[thread overview]
Message-ID: <20200818173411.404104-1-christian.brauner@ubuntu.com> (raw)

Hey everyone,

This is a follow-up to the do_fork() cleanup from last cycle based on a
short discussion this was merged.
Last cycle we removed copy_thread_tls() and the associated Kconfig
option for each architecture. Now we are only left with copy_thread().
Part of this work was removing the old do_fork() legacy clone()-style
calling convention in favor of the new struct kernel_clone args calling
convention.
The only remaining function callable outside of kernel/fork.c is
_do_fork(). It doesn't really follow the naming of kernel-internal
syscall helpers as Christoph righly pointed out. Switch all callers and
references to kernel_clone() and remove _do_fork() once and for all.

For all architectures I have done a full git rebase v5.9-rc1 -x "make
-j31". There were no built failures and the changes were fairly
mechanical.

The only helpers we have left now are kernel_thread() and kernel_clone()
where kernel_thread() just calls kernel_clone().

Thanks!
Christian

Christian Brauner (11):
  fork: introduce kernel_clone()
  h8300: switch to kernel_clone()
  ia64: switch to kernel_clone()
  m68k: switch to kernel_clone()
  nios2: switch to kernel_clone()
  sparc: switch to kernel_clone()
  x86: switch to kernel_clone()
  kprobes: switch to kernel_clone()
  kgdbts: switch to kernel_clone()
  tracing: switch to kernel_clone()
  sched: remove _do_fork()

 Documentation/trace/histogram.rst             |  4 +-
 arch/h8300/kernel/process.c                   |  2 +-
 arch/ia64/kernel/process.c                    |  4 +-
 arch/m68k/kernel/process.c                    | 10 ++--
 arch/nios2/kernel/process.c                   |  2 +-
 arch/sparc/kernel/process.c                   |  6 +--
 arch/x86/kernel/sys_ia32.c                    |  2 +-
 drivers/misc/kgdbts.c                         | 48 +++++++++----------
 include/linux/sched/task.h                    |  2 +-
 kernel/fork.c                                 | 14 +++---
 samples/kprobes/kprobe_example.c              |  6 +--
 samples/kprobes/kretprobe_example.c           |  4 +-
 .../test.d/dynevent/add_remove_kprobe.tc      |  2 +-
 .../test.d/dynevent/clear_select_events.tc    |  2 +-
 .../test.d/dynevent/generic_clear_event.tc    |  2 +-
 .../test.d/ftrace/func-filter-stacktrace.tc   |  4 +-
 .../ftrace/test.d/kprobe/add_and_remove.tc    |  2 +-
 .../ftrace/test.d/kprobe/busy_check.tc        |  2 +-
 .../ftrace/test.d/kprobe/kprobe_args.tc       |  4 +-
 .../ftrace/test.d/kprobe/kprobe_args_comm.tc  |  2 +-
 .../test.d/kprobe/kprobe_args_string.tc       |  4 +-
 .../test.d/kprobe/kprobe_args_symbol.tc       | 10 ++--
 .../ftrace/test.d/kprobe/kprobe_args_type.tc  |  2 +-
 .../ftrace/test.d/kprobe/kprobe_ftrace.tc     | 14 +++---
 .../ftrace/test.d/kprobe/kprobe_multiprobe.tc |  2 +-
 .../test.d/kprobe/kprobe_syntax_errors.tc     | 12 ++---
 .../ftrace/test.d/kprobe/kretprobe_args.tc    |  4 +-
 .../selftests/ftrace/test.d/kprobe/profile.tc |  2 +-
 28 files changed, 87 insertions(+), 87 deletions(-)

base-commit: 9123e3a74ec7b934a4a099e98af6a61c2f80bbf5
-- 
2.28.0