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

Christian Brauner
2020-08-18T17:36:13Z

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