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rust: lock: introduce Mutex

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This is the `struct mutex` lock backend and allows Rust code to use the
kernel mutex idiomatically.

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Will Deacon <will@kernel.org>
Cc: Waiman Long <longman@redhat.com>
Reviewed-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com>
Signed-off-by: Wedson Almeida Filho <walmeida@microsoft.com>
Link: https://lore.kernel.org/r/20230411054543.21278-3-wedsonaf@gmail.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
This commit is contained in:
Wedson Almeida Filho
2023-04-11 02:45:33 -03:00
committed by Miguel Ojeda
parent 76d4bd591e
commit 6d20d629c6
4 changed files with 128 additions and 0 deletions
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7
rust/helpers.c
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@@ -22,6 +22,7 @@
#include <linux/build_bug.h>
#include <linux/err.h>
#include <linux/refcount.h>
#include <linux/mutex.h>
__noreturn void rust_helper_BUG(void)
{
@@ -29,6 +30,12 @@ __noreturn void rust_helper_BUG(void)
}
EXPORT_SYMBOL_GPL(rust_helper_BUG);
void rust_helper_mutex_lock(struct mutex *lock)
{
mutex_lock(lock);
}
EXPORT_SYMBOL_GPL(rust_helper_mutex_lock);
refcount_t rust_helper_REFCOUNT_INIT(int n)
{
return (refcount_t)REFCOUNT_INIT(n);