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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-10-04 19:18:56 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-10-04 19:18:56 +0200 |
commit | af0622f6ae416f9ac340d6d632be9879805c294a (patch) | |
tree | 4601536c7954fae49617041ab9c415bb86229677 /kernel | |
parent | Merge tag 'drm-fixes-2019-10-04' of git://anongit.freedesktop.org/drm/drm (diff) | |
parent | sched: add kernel-doc for struct clone_args (diff) | |
download | linux-af0622f6ae416f9ac340d6d632be9879805c294a.tar.xz linux-af0622f6ae416f9ac340d6d632be9879805c294a.zip |
Merge tag 'for-linus-20191003' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull clone3/pidfd fixes from Christian Brauner:
"This contains a couple of fixes:
- Fix pidfd selftest compilation (Shuah Kahn)
Due to a false linking instruction in the Makefile compilation for
the pidfd selftests would fail on some systems.
- Fix compilation for glibc on RISC-V systems (Seth Forshee)
In some scenarios linux/uapi/linux/sched.h is included where
__ASSEMBLY__ is defined causing a build failure because struct
clone_args was not guarded by an #ifndef __ASSEMBLY__.
- Add missing clone3() and struct clone_args kernel-doc (Christian Brauner)
clone3() and struct clone_args were missing kernel-docs. (The goal
is to use kernel-doc for any function or type where it's worth it.)
For struct clone_args this also contains a comment about the fact
that it's versioned by size"
* tag 'for-linus-20191003' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
sched: add kernel-doc for struct clone_args
fork: add kernel-doc for clone3
selftests: pidfd: Fix undefined reference to pthread_create()
sched: Add __ASSEMBLY__ guards around struct clone_args
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/fork.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index f9572f416126..bf11cf39579a 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -2604,6 +2604,17 @@ static bool clone3_args_valid(const struct kernel_clone_args *kargs) return true; } +/** + * clone3 - create a new process with specific properties + * @uargs: argument structure + * @size: size of @uargs + * + * clone3() is the extensible successor to clone()/clone2(). + * It takes a struct as argument that is versioned by its size. + * + * Return: On success, a positive PID for the child process. + * On error, a negative errno number. + */ SYSCALL_DEFINE2(clone3, struct clone_args __user *, uargs, size_t, size) { int err; |