Re: [PATCH v14 1/5] ring-buffer: Flush and stop persistent ring buffer on panic

[Google]

On Mon, 30 Mar 2026 13:54:47 -0400
Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:

> On Mon, 30 Mar 2026 21:49:56 +0900
> "Masami Hiramatsu (Google)" <mhiramat@xxxxxxxxxx> wrote:
> 
> > diff --git a/arch/arm64/include/asm/ring_buffer.h b/arch/arm64/include/asm/ring_buffer.h
> > new file mode 100644
> > index 000000000000..62316c406888
> > --- /dev/null
> > +++ b/arch/arm64/include/asm/ring_buffer.h
> > @@ -0,0 +1,10 @@
> > +/* SPDX-License-Identifier: GPL-2.0-only */
> > +#ifndef _ASM_ARM64_RING_BUFFER_H
> > +#define _ASM_ARM64_RING_BUFFER_H
> > +
> > +#include <asm/cacheflush.h>
> > +
> > +/* Flush D-cache on persistent ring buffer */
> > +#define arch_ring_buffer_flush_range(start, end)	dcache_clean_pop(start, end)
> > +
> > +#endif /* _ASM_ARM64_RING_BUFFER_H */
> 
> You probably need to get an ack from the arm64 folks.

OK, I will add them in loop.

Thank you,


-- 
Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>