linux-kernel - Re: [PATCH 15/25] mm/openrisc: Use mm_fault

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Message-ID: <20200616181148.GQ75760@lianli.shorne-pla.net>
Date:   Wed, 17 Jun 2020 03:11:48 +0900
From:   Stafford Horne <shorne@...il.com>
To:     Peter Xu <peterx@...hat.com>
Cc:     linux-kernel@...r.kernel.org,
        Gerald Schaefer <gerald.schaefer@...ibm.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Jonas Bonn <jonas@...thpole.se>,
        Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>,
        openrisc@...ts.librecores.org
Subject: Re: [PATCH 15/25] mm/openrisc: Use mm_fault_accounting()

On Mon, Jun 15, 2020 at 06:15:57PM -0400, Peter Xu wrote:
> Use the new mm_fault_accounting() helper for page fault accounting.
> 
> Avoid doing page fault accounting multiple times if the page fault is retried.
> Also, the perf events for page faults will be accounted too when the config has
> CONFIG_PERF_EVENTS defined.
> 
> CC: Jonas Bonn <jonas@...thpole.se>
> CC: Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>
> CC: Stafford Horne <shorne@...il.com>
> CC: openrisc@...ts.librecores.org
> Signed-off-by: Peter Xu <peterx@...hat.com>

Acked-by: Stafford Horne <shorne@...il.com>