diff options
| author | Wedson Almeida Filho <walmeida@microsoft.com> | 2023-04-11 02:45:39 -0300 |
|---|---|---|
| committer | Miguel Ojeda <ojeda@kernel.org> | 2023-04-22 00:20:00 +0200 |
| commit | 313c4281bc9dfa98d76a71b16a684af1c52e7751 (patch) | |
| tree | fca1f406ce6b7f784bf87f7b14f6c4437f3f3fed /rust/helpers.c | |
| parent | f1fbd6a864d417443cdacd6bfdb7fd626993da7e (diff) | |
rust: add basic `Task`
It is an abstraction for C's `struct task_struct`. It implements
`AlwaysRefCounted`, so the refcount of the wrapped object is managed
safely on the Rust side.
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Reviewed-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com>
Signed-off-by: Wedson Almeida Filho <walmeida@microsoft.com>
Link: https://lore.kernel.org/r/20230411054543.21278-9-wedsonaf@gmail.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Diffstat (limited to 'rust/helpers.c')
| -rw-r--r-- | rust/helpers.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/rust/helpers.c b/rust/helpers.c index 446e3cfdb935..6e5b2c953d36 100644 --- a/rust/helpers.c +++ b/rust/helpers.c @@ -24,6 +24,7 @@ #include <linux/refcount.h> #include <linux/mutex.h> #include <linux/spinlock.h> +#include <linux/sched/signal.h> __noreturn void rust_helper_BUG(void) { @@ -60,6 +61,12 @@ void rust_helper_spin_unlock(spinlock_t *lock) } EXPORT_SYMBOL_GPL(rust_helper_spin_unlock); +int rust_helper_signal_pending(struct task_struct *t) +{ + return signal_pending(t); +} +EXPORT_SYMBOL_GPL(rust_helper_signal_pending); + refcount_t rust_helper_REFCOUNT_INIT(int n) { return (refcount_t)REFCOUNT_INIT(n); @@ -96,6 +103,18 @@ long rust_helper_PTR_ERR(__force const void *ptr) } EXPORT_SYMBOL_GPL(rust_helper_PTR_ERR); +void rust_helper_get_task_struct(struct task_struct *t) +{ + get_task_struct(t); +} +EXPORT_SYMBOL_GPL(rust_helper_get_task_struct); + +void rust_helper_put_task_struct(struct task_struct *t) +{ + put_task_struct(t); +} +EXPORT_SYMBOL_GPL(rust_helper_put_task_struct); + /* * We use `bindgen`'s `--size_t-is-usize` option to bind the C `size_t` type * as the Rust `usize` type, so we can use it in contexts where Rust |