From 8da7a2b7432e8f043f04515895687f72cdb3e0a8 Mon Sep 17 00:00:00 2001
From: Wedson Almeida Filho <walmeida@microsoft.com>
Date: Tue, 11 Apr 2023 02:45:40 -0300
Subject: rust: introduce `current`

This allows Rust code to get a reference to the current task without
having to increment the refcount, but still guaranteeing memory safety.

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/20230411054543.21278-10-wedsonaf@gmail.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
---
 rust/helpers.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'rust/helpers.c')

diff --git a/rust/helpers.c b/rust/helpers.c
index 6e5b2c953d36..2cb7b82053d8 100644
--- a/rust/helpers.c
+++ b/rust/helpers.c
@@ -103,6 +103,12 @@ long rust_helper_PTR_ERR(__force const void *ptr)
 }
 EXPORT_SYMBOL_GPL(rust_helper_PTR_ERR);
 
+struct task_struct *rust_helper_get_current(void)
+{
+	return current;
+}
+EXPORT_SYMBOL_GPL(rust_helper_get_current);
+
 void rust_helper_get_task_struct(struct task_struct *t)
 {
 	get_task_struct(t);
-- 
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