[v7] rust: add `ww_mutex` support

[PATCH v7 3/6] rust: error: add EDEADLK

Posted by Onur Özkan 1 month, 2 weeks ago

This is needed for the ww_mutex implementation so
we can handle EDEADLK on lock attempts.

Signed-off-by: Onur Özkan <work@onurozkan.dev>
---
 rust/kernel/error.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/rust/kernel/error.rs b/rust/kernel/error.rs
index 1c0e0e241daa..9bf1072cfe19 100644
--- a/rust/kernel/error.rs
+++ b/rust/kernel/error.rs
@@ -66,6 +66,7 @@ macro_rules! declare_err {
     declare_err!(EPIPE, "Broken pipe.");
     declare_err!(EDOM, "Math argument out of domain of func.");
     declare_err!(ERANGE, "Math result not representable.");
+    declare_err!(EDEADLK, "Resource deadlock avoided.");
     declare_err!(EOVERFLOW, "Value too large for defined data type.");
     declare_err!(ETIMEDOUT, "Connection timed out.");
     declare_err!(ERESTARTSYS, "Restart the system call.");
-- 
2.51.2

Re: [PATCH v7 3/6] rust: error: add EDEADLK

Posted by Daniel Almeida 2 weeks, 6 days ago


> On 1 Nov 2025, at 13:10, Onur Özkan <work@onurozkan.dev> wrote:
> 
> This is needed for the ww_mutex implementation so
> we can handle EDEADLK on lock attempts.
> 
> Signed-off-by: Onur Özkan <work@onurozkan.dev>
> ---
> rust/kernel/error.rs | 1 +
> 1 file changed, 1 insertion(+)
> 
> diff --git a/rust/kernel/error.rs b/rust/kernel/error.rs
> index 1c0e0e241daa..9bf1072cfe19 100644
> --- a/rust/kernel/error.rs
> +++ b/rust/kernel/error.rs
> @@ -66,6 +66,7 @@ macro_rules! declare_err {
>     declare_err!(EPIPE, "Broken pipe.");
>     declare_err!(EDOM, "Math argument out of domain of func.");
>     declare_err!(ERANGE, "Math result not representable.");
> +    declare_err!(EDEADLK, "Resource deadlock avoided.");
>     declare_err!(EOVERFLOW, "Value too large for defined data type.");
>     declare_err!(ETIMEDOUT, "Connection timed out.");
>     declare_err!(ERESTARTSYS, "Restart the system call.");
> -- 
> 2.51.2
> 
> 

Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>

Re: [PATCH v7 3/6] rust: error: add EDEADLK

Posted by Lyude Paul 3 weeks, 3 days ago

Reviewed-by: Lyude Paul <lyude@redhat.com>

On Sat, 2025-11-01 at 19:10 +0300, Onur Özkan wrote:
> This is needed for the ww_mutex implementation so
> we can handle EDEADLK on lock attempts.
> 
> Signed-off-by: Onur Özkan <work@onurozkan.dev>
> ---
>  rust/kernel/error.rs | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/rust/kernel/error.rs b/rust/kernel/error.rs
> index 1c0e0e241daa..9bf1072cfe19 100644
> --- a/rust/kernel/error.rs
> +++ b/rust/kernel/error.rs
> @@ -66,6 +66,7 @@ macro_rules! declare_err {
>      declare_err!(EPIPE, "Broken pipe.");
>      declare_err!(EDOM, "Math argument out of domain of func.");
>      declare_err!(ERANGE, "Math result not representable.");
> +    declare_err!(EDEADLK, "Resource deadlock avoided.");
>      declare_err!(EOVERFLOW, "Value too large for defined data type.");
>      declare_err!(ETIMEDOUT, "Connection timed out.");
>      declare_err!(ERESTARTSYS, "Restart the system call.");

-- 
Cheers,
 Lyude Paul (she/her)
 Senior Software Engineer at Red Hat

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