diff options
| author | Mike Christie <michael.christie@oracle.com> | 2023-03-11 01:03:28 +0300 |
|---|---|---|
| committer | Christian Brauner (Microsoft) <brauner@kernel.org> | 2023-03-12 12:54:43 +0300 |
| commit | 094717586bf71ac20ae3b240d2654d826634b21e (patch) | |
| tree | 30c6415099ff028b528f8562da588c9c69789005 | |
| parent | 11f3f500ec8a75c96087f3bed87aa2b1c5de7498 (diff) | |
| download | linux-094717586bf71ac20ae3b240d2654d826634b21e.tar.xz | |
fork: Add kernel_clone_args flag to ignore signals
Since:
commit 10ab825bdef8 ("change kernel threads to ignore signals instead of
blocking them")
kthreads have been ignoring signals by default, and the vhost layer has
never had a need to change that. This patch adds an option flag,
USER_WORKER_SIG_IGN, handled in copy_process() after copy_sighand()
and copy_signals() so vhost_tasks added in the next patches can continue
to ignore singals.
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
| -rw-r--r-- | include/linux/sched/task.h | 1 | ||||
| -rw-r--r-- | kernel/fork.c | 3 |
2 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h index 4f816048794f..00c54bfac0b5 100644 --- a/include/linux/sched/task.h +++ b/include/linux/sched/task.h @@ -29,6 +29,7 @@ struct kernel_clone_args { u32 io_thread:1; u32 user_worker:1; u32 no_files:1; + u32 ignore_signals:1; unsigned long stack; unsigned long stack_size; unsigned long tls; diff --git a/kernel/fork.c b/kernel/fork.c index f8d530f4406e..2918c685ede5 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -2290,6 +2290,9 @@ static __latent_entropy struct task_struct *copy_process( if (retval) goto bad_fork_cleanup_io; + if (args->ignore_signals) + ignore_signals(p); + stackleak_task_init(p); if (pid != &init_struct_pid) { |