From 313c4281bc9dfa98d76a71b16a684af1c52e7751 Mon Sep 17 00:00:00 2001 From: Wedson Almeida Filho Date: Tue, 11 Apr 2023 02:45:39 -0300 Subject: 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 Cc: Peter Zijlstra Reviewed-by: Martin Rodriguez Reboredo Signed-off-by: Wedson Almeida Filho Link: https://lore.kernel.org/r/20230411054543.21278-9-wedsonaf@gmail.com Signed-off-by: Miguel Ojeda --- rust/helpers.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'rust/helpers.c') 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 #include #include +#include __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 -- cgit