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authorLinus Torvalds <torvalds@linux-foundation.org>2020-10-14 14:32:52 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-10-14 14:32:52 -0700
commit612e7a4c1645f09449355cf08b6fd3de80b4f8cc (patch)
tree9052923f6ffab360c12160af9f07efa56d6342d7 /kernel/fork.c
parent9e51183e9462852ad8d1f3b6c687500b770605f4 (diff)
parent06fe45634942dc96c316bbb789049a4b0b692542 (diff)
Merge tag 'kernel-clone-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull kernel_clone() updates from Christian Brauner: "During the v5.9 merge window we reworked the process creation codepaths across multiple architectures. After this work we were only left with the _do_fork() helper based on the struct kernel_clone_args calling convention. As was pointed out _do_fork() isn't valid kernelese especially for a helper that isn't just static. This series removes the _do_fork() helper and introduces the new kernel_clone() helper. The process creation cleanup didn't change the name to something more reasonable mainly because _do_fork() was used in quite a few places. So sending this as a separate series seemed the better strategy. I originally intended to send this early in the v5.9 development cycle after the merge window had closed but given that this was touching quite a few places I decided to defer this until the v5.10 merge window" * tag 'kernel-clone-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux: sched: remove _do_fork() tracing: switch to kernel_clone() kgdbts: switch to kernel_clone() kprobes: switch to kernel_clone() x86: switch to kernel_clone() sparc: switch to kernel_clone() nios2: switch to kernel_clone() m68k: switch to kernel_clone() ia64: switch to kernel_clone() h8300: switch to kernel_clone() fork: introduce kernel_clone()
Diffstat (limited to 'kernel/fork.c')
-rw-r--r--kernel/fork.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index 50c90d368117..3ca8f1f83fb3 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -2412,14 +2412,14 @@ struct mm_struct *copy_init_mm(void)
*
* args->exit_signal is expected to be checked for sanity by the caller.
*/
-long _do_fork(struct kernel_clone_args *args)
+pid_t kernel_clone(struct kernel_clone_args *args)
{
u64 clone_flags = args->flags;
struct completion vfork;
struct pid *pid;
struct task_struct *p;
int trace = 0;
- long nr;
+ pid_t nr;
/*
* For legacy clone() calls, CLONE_PIDFD uses the parent_tid argument
@@ -2505,7 +2505,7 @@ pid_t kernel_thread(int (*fn)(void *), void *arg, unsigned long flags)
.stack_size = (unsigned long)arg,
};
- return _do_fork(&args);
+ return kernel_clone(&args);
}
#ifdef __ARCH_WANT_SYS_FORK
@@ -2516,7 +2516,7 @@ SYSCALL_DEFINE0(fork)
.exit_signal = SIGCHLD,
};
- return _do_fork(&args);
+ return kernel_clone(&args);
#else
/* can not support in nommu mode */
return -EINVAL;
@@ -2532,7 +2532,7 @@ SYSCALL_DEFINE0(vfork)
.exit_signal = SIGCHLD,
};
- return _do_fork(&args);
+ return kernel_clone(&args);
}
#endif
@@ -2570,7 +2570,7 @@ SYSCALL_DEFINE5(clone, unsigned long, clone_flags, unsigned long, newsp,
.tls = tls,
};
- return _do_fork(&args);
+ return kernel_clone(&args);
}
#endif
@@ -2728,7 +2728,7 @@ SYSCALL_DEFINE2(clone3, struct clone_args __user *, uargs, size_t, size)
if (!clone3_args_valid(&kargs))
return -EINVAL;
- return _do_fork(&kargs);
+ return kernel_clone(&kargs);
}
#endif
@@ -2891,7 +2891,7 @@ int unshare_fd(unsigned long unshare_flags, unsigned int max_fds,
/*
* unshare allows a process to 'unshare' part of the process
* context which was originally shared using clone. copy_*
- * functions used by _do_fork() cannot be used here directly
+ * functions used by kernel_clone() cannot be used here directly
* because they modify an inactive task_struct that is being
* constructed. Here we are modifying the current, active,
* task_struct.