linux-kernel - Re: [PATCH v2 2/2] mm: Remove tlb_flush_reason::NR_TLB_FLUSH

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <a5f3885f-aa32-420b-8d2f-e8ed6bfc6ee3@lucifer.local>
Date: Mon, 15 Dec 2025 12:40:29 +0000
From: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
To: Tal Zussman <tz2294@...umbia.edu>
Cc: Steven Rostedt <rostedt@...dmis.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Ingo Molnar <mingo@...nel.org>, Rik van Riel <riel@...riel.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Liam R. Howlett" <Liam.Howlett@...cle.com>,
        Vlastimil Babka <vbabka@...e.cz>, Mike Rapoport <rppt@...nel.org>,
        Suren Baghdasaryan <surenb@...gle.com>, Michal Hocko <mhocko@...e.com>,
        x86@...nel.org, Will Deacon <will@...nel.org>,
        "Aneesh Kumar K.V" <aneesh.kumar@...nel.org>,
        Nick Piggin <npiggin@...il.com>, Peter Zijlstra <peterz@...radead.org>,
        David Hildenbrand <david@...nel.org>, linux-kernel@...r.kernel.org,
        linux-trace-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-arch@...r.kernel.org
Subject: Re: [PATCH v2 2/2] mm: Remove tlb_flush_reason::NR_TLB_FLUSH_REASONS

On Fri, Dec 12, 2025 at 04:08:08AM -0500, Tal Zussman wrote:
> This has been unused since it was added 11 years ago in commit
> d17d8f9dedb9 ("x86/mm: Add tracepoints for TLB flushes").
>
> Acked-by: David Hildenbrand <david@...hat.com>
> Reviewed-by: Rik van Riel <riel@...riel.com>
> Signed-off-by: Tal Zussman <tz2294@...umbia.edu>

Hmm, guess just a way of counting the number of reasons, but if nobody's using
it that's silly. So:

Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>

> ---
>  include/linux/mm_types.h | 1 -
>  1 file changed, 1 deletion(-)
>
> diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
> index 9f6de068295d..42af2292951d 100644
> --- a/include/linux/mm_types.h
> +++ b/include/linux/mm_types.h
> @@ -1631,7 +1631,6 @@ enum tlb_flush_reason {
>  	TLB_LOCAL_MM_SHOOTDOWN,
>  	TLB_REMOTE_SEND_IPI,
>  	TLB_REMOTE_WRONG_CPU,
> -	NR_TLB_FLUSH_REASONS,
>  };
>
>  /**
>
> --
> 2.39.5
>