linux-kernel - Re: [PATCH] dma-mapping: fix direction in dma

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Message-ID: <20251001081605.4f86a6cf@mordecai.tesarici.cz>
Date: Wed, 1 Oct 2025 08:16:05 +0200
From: Petr Tesarik <ptesarik@...e.com>
To: Steven Rostedt <rostedt@...dmis.org>, Masami Hiramatsu
 <mhiramat@...nel.org>, Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
 Sean Anderson <sean.anderson@...ux.dev>, Marek Szyprowski
 <m.szyprowski@...sung.com>, Robin Murphy <robin.murphy@....com>
Cc: linux-trace-kernel@...r.kernel.org, iommu@...ts.linux.dev,
 linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH] dma-mapping: fix direction in dma_alloc direction
 traces

Cc: stable@...r.kernel.org

(One day, I'll finally remember, I promise.)

Petr T

On Wed,  1 Oct 2025 08:10:28 +0200
Petr Tesarik <ptesarik@...e.com> wrote:

> Set __entry->dir to the actual "dir" parameter of all trace events
> in dma_alloc_class. This struct member was left uninitialized by
> mistake.
> 
> Signed-off-by: Petr Tesarik <ptesarik@...e.com>
> Fixes: 3afff779a725 ("dma-mapping: trace dma_alloc/free direction")
> ---
>  include/trace/events/dma.h | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/include/trace/events/dma.h b/include/trace/events/dma.h
> index d8ddc27b6a7c8..945fcbaae77e9 100644
> --- a/include/trace/events/dma.h
> +++ b/include/trace/events/dma.h
> @@ -134,6 +134,7 @@ DECLARE_EVENT_CLASS(dma_alloc_class,
>  		__entry->dma_addr = dma_addr;
>  		__entry->size = size;
>  		__entry->flags = flags;
> +		__entry->dir = dir;
>  		__entry->attrs = attrs;
>  	),
>