diff options
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 9796897560ab..27c5203750b4 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -2157,7 +2157,7 @@ static __latent_entropy struct task_struct *copy_process( p->io_context = NULL; audit_set_context(p, NULL); cgroup_fork(p); - if (p->flags & PF_KTHREAD) { + if (args->kthread) { if (!set_kthread_struct(p)) goto bad_fork_cleanup_delayacct; } @@ -2548,7 +2548,8 @@ struct task_struct * __init fork_idle(int cpu) { struct task_struct *task; struct kernel_clone_args args = { - .flags = CLONE_VM, + .flags = CLONE_VM, + .kthread = 1, }; task = copy_process(&init_struct_pid, 0, cpu_to_node(cpu), &args); @@ -2686,6 +2687,23 @@ pid_t kernel_thread(int (*fn)(void *), void *arg, unsigned long flags) .exit_signal = (lower_32_bits(flags) & CSIGNAL), .stack = (unsigned long)fn, .stack_size = (unsigned long)arg, + .kthread = 1, + }; + + return kernel_clone(&args); +} + +/* + * Create a user mode thread. + */ +pid_t user_mode_thread(int (*fn)(void *), void *arg, unsigned long flags) +{ + struct kernel_clone_args args = { + .flags = ((lower_32_bits(flags) | CLONE_VM | + CLONE_UNTRACED) & ~CSIGNAL), + .exit_signal = (lower_32_bits(flags) & CSIGNAL), + .stack = (unsigned long)fn, + .stack_size = (unsigned long)arg, }; return kernel_clone(&args); |