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kernel: Allow a kernel thread's name to be set in copy_process

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This patch allows kernel users to pass in the thread name so it can be
set during creation instead of having to use set_task_comm after the
thread is created.

Signed-off-by: Mike Christie <michael.christie@oracle.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
This commit is contained in:
Mike Christie
2023-03-10 16:03:23 -06:00
committed by Christian Brauner (Microsoft)
parent e0a98139c1
commit cf587db2ee
4 changed files with 12 additions and 4 deletions
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7
kernel/fork.c
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@@ -2112,6 +2112,9 @@ static __latent_entropy struct task_struct *copy_process(
siginitsetinv(&p->blocked, sigmask(SIGKILL)|sigmask(SIGSTOP));
}
if (args->name)
strscpy_pad(p->comm, args->name, sizeof(p->comm));
p->set_child_tid = (clone_flags & CLONE_CHILD_SETTID) ? args->child_tid : NULL;
/*
* Clear TID on mm_release()?
@@ -2730,7 +2733,8 @@ pid_t kernel_clone(struct kernel_clone_args *args)
/*
* Create a kernel thread.
*/
pid_t kernel_thread(int (*fn)(void *), void *arg, unsigned long flags)
pid_t kernel_thread(int (*fn)(void *), void *arg, const char *name,
unsigned long flags)
{
struct kernel_clone_args args = {
.flags = ((lower_32_bits(flags) | CLONE_VM |
@@ -2738,6 +2742,7 @@ pid_t kernel_thread(int (*fn)(void *), void *arg, unsigned long flags)
.exit_signal = (lower_32_bits(flags) & CSIGNAL),
.fn = fn,
.fn_arg = arg,
.name = name,
.kthread = 1,
};