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Date: Mon, 31 Mar 2025 21:36:16 -0400
From: Steven Rostedt <rostedt@goodmis.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, Masami
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 Vlastimil Babka <vbabka@suse.cz>, Mike Rapoport <rppt@kernel.org>, Kees
 Cook <kees@kernel.org>, Tony Luck <tony.luck@intel.com>, "Guilherme G.
 Piccoli" <gpiccoli@igalia.com>, linux-hardening@vger.kernel.org, Matthew
 Wilcox <willy@infradead.org>
Subject: Re: [PATCH v2 1/2] tracing: ring-buffer: Have the ring buffer code
 do the vmap of physical memory
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On Mon, 31 Mar 2025 17:49:07 -0700
Linus Torvalds <torvalds@linux-foundation.org> wrote:

> For example, just adding flush_dcache_range() into
> include/asm-generic/cacheflush.h should be more-or-less trivial, with
> the same kinds of "architectures can make clear they have their own
> optimized version".

Just so I'm clear. Are you suggesting to add flush_dcache_range() to
cacheflush.h and using that?

Looks like some of the code would be able to remove the ifdefs:

 #ifdef CONFIG_PPC
	flush_dcache_range(...);
 #endif

if that's the case.

-- Steve